Scippy

SCIP

Solving Constraint Integer Programs

Detailed Description

methods for branch and bound tree

Author
Tobias Achterberg
Timo Berthold
Gerald Gamrath

Definition in file tree.c.

#include <assert.h>
#include "scip/def.h"
#include "scip/set.h"
#include "scip/stat.h"
#include "scip/clock.h"
#include "scip/visual.h"
#include "scip/event.h"
#include "scip/lp.h"
#include "scip/relax.h"
#include "scip/var.h"
#include "scip/implics.h"
#include "scip/primal.h"
#include "scip/tree.h"
#include "scip/reopt.h"
#include "scip/conflictstore.h"
#include "scip/solve.h"
#include "scip/cons.h"
#include "scip/nodesel.h"
#include "scip/prop.h"
#include "scip/debug.h"
#include "scip/prob.h"
#include "scip/scip.h"
#include "scip/struct_event.h"
#include "scip/pub_message.h"
#include "scip/struct_branch.h"
#include "lpi/lpi.h"

Go to the source code of this file.

Macros

#define MAXREPROPMARK   511
 
#define ARRAYGROWTH   5
 

Functions

static SCIP_RETCODE treeEnsureChildrenMem (SCIP_TREE *tree, SCIP_SET *set, int num)
 
static SCIP_RETCODE treeEnsurePathMem (SCIP_TREE *tree, SCIP_SET *set, int num)
 
static SCIP_RETCODE treeEnsurePendingbdchgsMem (SCIP_TREE *tree, SCIP_SET *set, int num)
 
 SCIP_DECL_SORTPTRCOMP (SCIPnodeCompLowerbound)
 
static void forkCaptureLPIState (SCIP_FORK *fork, int nuses)
 
static SCIP_RETCODE forkReleaseLPIState (SCIP_FORK *fork, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
static void subrootCaptureLPIState (SCIP_SUBROOT *subroot, int nuses)
 
static SCIP_RETCODE subrootReleaseLPIState (SCIP_SUBROOT *subroot, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
SCIP_RETCODE SCIPnodeCaptureLPIState (SCIP_NODE *node, int nuses)
 
SCIP_RETCODE SCIPnodeReleaseLPIState (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
static SCIP_RETCODE probingnodeCreate (SCIP_PROBINGNODE **probingnode, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
static SCIP_RETCODE probingnodeUpdate (SCIP_PROBINGNODE *probingnode, BMS_BLKMEM *blkmem, SCIP_TREE *tree, SCIP_LP *lp)
 
static SCIP_RETCODE probingnodeFree (SCIP_PROBINGNODE **probingnode, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
static SCIP_RETCODE junctionInit (SCIP_JUNCTION *junction, SCIP_TREE *tree)
 
static SCIP_RETCODE pseudoforkCreate (SCIP_PSEUDOFORK **pseudofork, BMS_BLKMEM *blkmem, SCIP_TREE *tree, SCIP_LP *lp)
 
static SCIP_RETCODE pseudoforkFree (SCIP_PSEUDOFORK **pseudofork, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp)
 
static SCIP_RETCODE forkCreate (SCIP_FORK **fork, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_PROB *prob, SCIP_TREE *tree, SCIP_LP *lp)
 
static SCIP_RETCODE forkFree (SCIP_FORK **fork, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp)
 
static SCIP_RETCODE subrootFree (SCIP_SUBROOT **subroot, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp)
 
static void treeRemoveSibling (SCIP_TREE *tree, SCIP_NODE *sibling)
 
static SCIP_RETCODE treeAddChild (SCIP_TREE *tree, SCIP_SET *set, SCIP_NODE *child, SCIP_Real nodeselprio)
 
static void treeRemoveChild (SCIP_TREE *tree, SCIP_NODE *child)
 
static SCIP_RETCODE nodeAssignParent (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_TREE *tree, SCIP_NODE *parent, SCIP_Real nodeselprio)
 
static SCIP_RETCODE nodeReleaseParent (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_TREE *tree, SCIP_LP *lp)
 
static SCIP_RETCODE nodeCreate (SCIP_NODE **node, BMS_BLKMEM *blkmem, SCIP_SET *set)
 
SCIP_RETCODE SCIPnodeCreateChild (SCIP_NODE **node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_Real nodeselprio, SCIP_Real estimate)
 
SCIP_Bool SCIPtreeWasNodeLastBranchParent (SCIP_TREE *tree, SCIP_NODE *node)
 
SCIP_RETCODE SCIPnodeFree (SCIP_NODE **node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_TREE *tree, SCIP_LP *lp)
 
SCIP_RETCODE SCIPnodeCutoff (SCIP_NODE *node, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_REOPT *reopt, SCIP_LP *lp, BMS_BLKMEM *blkmem)
 
void SCIPnodePropagateAgain (SCIP_NODE *node, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree)
 
void SCIPnodeMarkPropagated (SCIP_NODE *node, SCIP_TREE *tree)
 
static void treeNextRepropsubtreecount (SCIP_TREE *tree)
 
static SCIP_RETCODE nodeRepropagate (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_Bool *cutoff)
 
static SCIP_RETCODE nodeActivate (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_Bool *cutoff)
 
static SCIP_RETCODE nodeDeactivate (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue)
 
SCIP_RETCODE SCIPnodeAddCons (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_CONS *cons)
 
SCIP_RETCODE SCIPnodeDelCons (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_CONS *cons)
 
void SCIPnodeGetAddedConss (SCIP_NODE *node, SCIP_CONS **addedconss, int *naddedconss, int addedconsssize)
 
int SCIPnodeGetNAddedConss (SCIP_NODE *node)
 
static SCIP_RETCODE treeAddPendingBdchg (SCIP_TREE *tree, SCIP_SET *set, SCIP_NODE *node, SCIP_VAR *var, SCIP_Real newbound, SCIP_BOUNDTYPE boundtype, SCIP_CONS *infercons, SCIP_PROP *inferprop, int inferinfo, SCIP_Bool probingchange)
 
SCIP_RETCODE SCIPnodeAddBoundinfer (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_VAR *var, SCIP_Real newbound, SCIP_BOUNDTYPE boundtype, SCIP_CONS *infercons, SCIP_PROP *inferprop, int inferinfo, SCIP_Bool probingchange)
 
SCIP_RETCODE SCIPnodeAddBoundchg (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_VAR *var, SCIP_Real newbound, SCIP_BOUNDTYPE boundtype, SCIP_Bool probingchange)
 
SCIP_RETCODE SCIPnodeAddHoleinfer (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real left, SCIP_Real right, SCIP_CONS *infercons, SCIP_PROP *inferprop, int inferinfo, SCIP_Bool probingchange, SCIP_Bool *added)
 
SCIP_RETCODE SCIPnodeAddHolechg (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real left, SCIP_Real right, SCIP_Bool probingchange, SCIP_Bool *added)
 
static SCIP_RETCODE treeApplyPendingBdchgs (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable)
 
void SCIPnodeUpdateLowerbound (SCIP_NODE *node, SCIP_STAT *stat, SCIP_SET *set, SCIP_TREE *tree, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_Real newbound)
 
SCIP_RETCODE SCIPnodeUpdateLowerboundLP (SCIP_NODE *node, SCIP_SET *set, SCIP_STAT *stat, SCIP_TREE *tree, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp)
 
void SCIPchildChgNodeselPrio (SCIP_TREE *tree, SCIP_NODE *child, SCIP_Real priority)
 
void SCIPnodeSetEstimate (SCIP_NODE *node, SCIP_SET *set, SCIP_Real newestimate)
 
SCIP_RETCODE SCIPnodePropagateImplics (SCIP_NODE *node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_Bool *cutoff)
 
static SCIP_RETCODE treeUpdatePathLPSize (SCIP_TREE *tree, int startdepth)
 
static void treeFindSwitchForks (SCIP_TREE *tree, SCIP_NODE *node, SCIP_NODE **commonfork, SCIP_NODE **newlpfork, SCIP_NODE **newlpstatefork, SCIP_NODE **newsubroot, SCIP_Bool *cutoff)
 
static SCIP_RETCODE treeSwitchPath (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_NODE *fork, SCIP_NODE *focusnode, SCIP_Bool *cutoff)
 
static SCIP_RETCODE subrootConstructLP (SCIP_NODE *subroot, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp)
 
static SCIP_RETCODE forkAddLP (SCIP_NODE *fork, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp)
 
static SCIP_RETCODE pseudoforkAddLP (SCIP_NODE *pseudofork, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp)
 
static void treeCheckPath (SCIP_TREE *tree)
 
SCIP_RETCODE SCIPtreeLoadLP (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_LP *lp, SCIP_Bool *initroot)
 
SCIP_RETCODE SCIPtreeLoadLPState (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
 
static SCIP_RETCODE nodeToLeaf (SCIP_NODE **node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_NODE *lpstatefork, SCIP_Real cutoffbound)
 
static SCIP_RETCODE focusnodeCleanupVars (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CLIQUETABLE *cliquetable, SCIP_Bool inlp)
 
static SCIP_RETCODE focusnodeToDeadend (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CLIQUETABLE *cliquetable)
 
static SCIP_RETCODE focusnodeToLeaf (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_NODE *lpstatefork, SCIP_Real cutoffbound)
 
static SCIP_RETCODE focusnodeToJunction (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_TREE *tree, SCIP_LP *lp)
 
static SCIP_RETCODE focusnodeToPseudofork (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CLIQUETABLE *cliquetable)
 
static SCIP_RETCODE focusnodeToFork (BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CLIQUETABLE *cliquetable)
 
static SCIP_RETCODE treeNodesToQueue (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp, SCIP_NODE **nodes, int *nnodes, SCIP_NODE *lpstatefork, SCIP_Real cutoffbound)
 
static void treeChildrenToSiblings (SCIP_TREE *tree)
 
SCIP_RETCODE SCIPnodeFocus (SCIP_NODE **node, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_REOPT *reopt, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_CONFLICTSTORE *conflictstore, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, SCIP_Bool *cutoff, SCIP_Bool postponed, SCIP_Bool exitsolve)
 
SCIP_RETCODE SCIPtreeCreate (SCIP_TREE **tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_NODESEL *nodesel)
 
SCIP_RETCODE SCIPtreeFree (SCIP_TREE **tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeClear (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeCreateRoot (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeCreatePresolvingRoot (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_CONFLICTSTORE *conflictstore, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable)
 
SCIP_RETCODE SCIPtreeFreePresolvingRoot (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_PRIMAL *primal, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_CONFLICT *conflict, SCIP_CONFLICTSTORE *conflictstore, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable)
 
SCIP_NODESELSCIPtreeGetNodesel (SCIP_TREE *tree)
 
SCIP_RETCODE SCIPtreeSetNodesel (SCIP_TREE *tree, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_NODESEL *nodesel)
 
SCIP_RETCODE SCIPtreeCutoff (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTFILTER *eventfilter, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp, SCIP_Real cutoffbound)
 
SCIP_Real SCIPtreeCalcNodeselPriority (SCIP_TREE *tree, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var, SCIP_BRANCHDIR branchdir, SCIP_Real targetvalue)
 
SCIP_Real SCIPtreeCalcChildEstimate (SCIP_TREE *tree, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var, SCIP_Real targetvalue)
 
SCIP_RETCODE SCIPtreeBranchVar (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real val, SCIP_NODE **downchild, SCIP_NODE **eqchild, SCIP_NODE **upchild)
 
SCIP_RETCODE SCIPtreeBranchVarHole (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real left, SCIP_Real right, SCIP_NODE **downchild, SCIP_NODE **upchild)
 
SCIP_RETCODE SCIPtreeBranchVarNary (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_VAR *var, SCIP_Real val, int n, SCIP_Real minwidth, SCIP_Real widthfactor, int *nchildren)
 
SCIP_RETCODE SCIPtreeAddDiveBoundChange (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_VAR *var, SCIP_BRANCHDIR dir, SCIP_Real value, SCIP_Bool preferred)
 
void SCIPtreeGetDiveBoundChangeData (SCIP_TREE *tree, SCIP_VAR ***variables, SCIP_BRANCHDIR **directions, SCIP_Real **values, int *ndivebdchgs, SCIP_Bool preferred)
 
void SCIPtreeClearDiveBoundChanges (SCIP_TREE *tree)
 
static SCIP_RETCODE treeCreateProbingNode (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeStartProbing (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp, SCIP_RELAXATION *relaxation, SCIP_PROB *transprob, SCIP_Bool strongbranching)
 
SCIP_RETCODE SCIPtreeCreateProbingNode (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeSetProbingLPState (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_LP *lp, SCIP_LPISTATE **lpistate, SCIP_LPINORMS **lpinorms, SCIP_Bool primalfeas, SCIP_Bool dualfeas)
 
SCIP_RETCODE SCIPtreeLoadProbingLPState (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
 
SCIP_RETCODE SCIPtreeMarkProbingNodeHasLP (SCIP_TREE *tree, BMS_BLKMEM *blkmem, SCIP_LP *lp)
 
static SCIP_RETCODE treeBacktrackProbing (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_PRIMAL *primal, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_CLIQUETABLE *cliquetable, int probingdepth)
 
SCIP_RETCODE SCIPtreeBacktrackProbing (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_PRIMAL *primal, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_CLIQUETABLE *cliquetable, int probingdepth)
 
SCIP_RETCODE SCIPtreeEndProbing (SCIP_TREE *tree, SCIP_REOPT *reopt, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_LP *lp, SCIP_RELAXATION *relaxation, SCIP_PRIMAL *primal, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_EVENTFILTER *eventfilter, SCIP_CLIQUETABLE *cliquetable)
 
SCIP_RETCODE SCIPtreeStoreRelaxSol (SCIP_TREE *tree, SCIP_SET *set, SCIP_RELAXATION *relaxation, SCIP_PROB *transprob)
 
SCIP_RETCODE SCIPtreeRestoreRelaxSol (SCIP_TREE *tree, SCIP_SET *set, SCIP_RELAXATION *relaxation, SCIP_PROB *transprob)
 
SCIP_NODESCIPtreeGetPrioChild (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetPrioSibling (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetBestChild (SCIP_TREE *tree, SCIP_SET *set)
 
SCIP_NODESCIPtreeGetBestSibling (SCIP_TREE *tree, SCIP_SET *set)
 
SCIP_NODESCIPtreeGetBestLeaf (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetBestNode (SCIP_TREE *tree, SCIP_SET *set)
 
SCIP_Real SCIPtreeGetLowerbound (SCIP_TREE *tree, SCIP_SET *set)
 
SCIP_NODESCIPtreeGetLowerboundNode (SCIP_TREE *tree, SCIP_SET *set)
 
SCIP_Real SCIPtreeGetAvgLowerbound (SCIP_TREE *tree, SCIP_Real cutoffbound)
 
SCIP_NODETYPE SCIPnodeGetType (SCIP_NODE *node)
 
SCIP_Longint SCIPnodeGetNumber (SCIP_NODE *node)
 
int SCIPnodeGetDepth (SCIP_NODE *node)
 
SCIP_Real SCIPnodeGetLowerbound (SCIP_NODE *node)
 
SCIP_Real SCIPnodeGetEstimate (SCIP_NODE *node)
 
SCIP_REOPTTYPE SCIPnodeGetReopttype (SCIP_NODE *node)
 
void SCIPnodeSetReopttype (SCIP_NODE *node, SCIP_REOPTTYPE reopttype)
 
unsigned int SCIPnodeGetReoptID (SCIP_NODE *node)
 
void SCIPnodeSetReoptID (SCIP_NODE *node, unsigned int id)
 
SCIP_DOMCHGSCIPnodeGetDomchg (SCIP_NODE *node)
 
void SCIPnodeGetNDomchg (SCIP_NODE *node, int *nbranchings, int *nconsprop, int *nprop)
 
int SCIPnodeGetNDualBndchgs (SCIP_NODE *node)
 
void SCIPnodeGetDualBoundchgs (SCIP_NODE *node, SCIP_VAR **vars, SCIP_Real *bounds, SCIP_BOUNDTYPE *boundtypes, int *nvars, int varssize)
 
SCIP_NODESCIPnodeGetParent (SCIP_NODE *node)
 
void SCIPnodeGetParentBranchings (SCIP_NODE *node, SCIP_VAR **branchvars, SCIP_Real *branchbounds, SCIP_BOUNDTYPE *boundtypes, int *nbranchvars, int branchvarssize)
 
void SCIPnodeGetAncestorBranchings (SCIP_NODE *node, SCIP_VAR **branchvars, SCIP_Real *branchbounds, SCIP_BOUNDTYPE *boundtypes, int *nbranchvars, int branchvarssize)
 
void SCIPnodeGetAncestorBranchingsPart (SCIP_NODE *node, SCIP_NODE *parent, SCIP_VAR **branchvars, SCIP_Real *branchbounds, SCIP_BOUNDTYPE *boundtypes, int *nbranchvars, int branchvarssize)
 
void SCIPnodeGetConsProps (SCIP_NODE *node, SCIP_VAR **vars, SCIP_Real *varbounds, SCIP_BOUNDTYPE *varboundtypes, int *nconspropvars, int conspropvarssize)
 
void SCIPnodeGetBdChgsAfterDual (SCIP_NODE *node, SCIP_VAR **vars, SCIP_Real *varbounds, SCIP_BOUNDTYPE *varboundtypes, int start, int *nbranchvars, int branchvarssize)
 
SCIP_RETCODE SCIPnodePrintAncestorBranchings (SCIP_NODE *node, FILE *file)
 
void SCIPnodeGetAncestorBranchingPath (SCIP_NODE *node, SCIP_VAR **branchvars, SCIP_Real *branchbounds, SCIP_BOUNDTYPE *boundtypes, int *nbranchvars, int branchvarssize, int *nodeswitches, int *nnodes, int nodeswitchsize)
 
SCIP_Bool SCIPnodesSharePath (SCIP_NODE *node1, SCIP_NODE *node2)
 
SCIP_NODESCIPnodesGetCommonAncestor (SCIP_NODE *node1, SCIP_NODE *node2)
 
SCIP_Bool SCIPnodeIsActive (SCIP_NODE *node)
 
SCIP_Bool SCIPnodeIsPropagatedAgain (SCIP_NODE *node)
 
SCIP_CONSSETCHGSCIPnodeGetConssetchg (SCIP_NODE *node)
 
int SCIPtreeGetNChildren (SCIP_TREE *tree)
 
int SCIPtreeGetNSiblings (SCIP_TREE *tree)
 
int SCIPtreeGetNLeaves (SCIP_TREE *tree)
 
int SCIPtreeGetNNodes (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeIsPathComplete (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeProbing (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetProbingRoot (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetFocusNode (SCIP_TREE *tree)
 
int SCIPtreeGetFocusDepth (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeHasFocusNodeLP (SCIP_TREE *tree)
 
void SCIPtreeSetFocusNodeLP (SCIP_TREE *tree, SCIP_Bool solvelp)
 
SCIP_Bool SCIPtreeIsFocusNodeLPConstructed (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeInRepropagation (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetCurrentNode (SCIP_TREE *tree)
 
int SCIPtreeGetCurrentDepth (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeHasCurrentNodeLP (SCIP_TREE *tree)
 
int SCIPtreeGetProbingDepth (SCIP_TREE *tree)
 
int SCIPtreeGetEffectiveRootDepth (SCIP_TREE *tree)
 
SCIP_NODESCIPtreeGetRootNode (SCIP_TREE *tree)
 
SCIP_Bool SCIPtreeProbingObjChanged (SCIP_TREE *tree)
 
void SCIPtreeMarkProbingObjChanged (SCIP_TREE *tree)
 

Macro Definition Documentation

◆ MAXREPROPMARK

#define MAXREPROPMARK   511

maximal subtree repropagation marker; must correspond to node data structure

Definition at line 55 of file tree.c.

Referenced by SCIPtreeCreateRoot(), and treeNextRepropsubtreecount().

◆ ARRAYGROWTH

#define ARRAYGROWTH   5

adds a diving bound change to the tree together with the information if this is a bound change for the preferred direction or not

Definition at line 6263 of file tree.c.

Referenced by SCIPtreeAddDiveBoundChange().

Function Documentation

◆ treeEnsureChildrenMem()

static SCIP_RETCODE treeEnsureChildrenMem ( SCIP_TREE tree,
SCIP_SET set,
int  num 
)
static

resizes children arrays to be able to store at least num nodes

Parameters
treebranch and bound tree
setglobal SCIP settings
numminimal number of node slots in array

Definition at line 64 of file tree.c.

References BMSreallocMemoryArray, SCIP_Tree::children, SCIP_Tree::childrenprio, SCIP_Tree::childrensize, NULL, SCIP_ALLOC, SCIP_OKAY, and SCIPsetCalcMemGrowSize().

Referenced by treeAddChild().

◆ treeEnsurePathMem()

static SCIP_RETCODE treeEnsurePathMem ( SCIP_TREE tree,
SCIP_SET set,
int  num 
)
static

resizes path array to be able to store at least num nodes

Parameters
treebranch and bound tree
setglobal SCIP settings
numminimal number of node slots in path

Definition at line 89 of file tree.c.

References BMSreallocMemoryArray, NULL, SCIP_Tree::path, SCIP_Tree::pathnlpcols, SCIP_Tree::pathnlprows, SCIP_Tree::pathsize, SCIP_ALLOC, SCIP_OKAY, and SCIPsetCalcPathGrowSize().

Referenced by treeCreateProbingNode(), and treeSwitchPath().

◆ treeEnsurePendingbdchgsMem()

static SCIP_RETCODE treeEnsurePendingbdchgsMem ( SCIP_TREE tree,
SCIP_SET set,
int  num 
)
static

resizes pendingbdchgs array to be able to store at least num nodes

Parameters
treebranch and bound tree
setglobal SCIP settings
numminimal number of node slots in path

Definition at line 115 of file tree.c.

References BMSreallocMemoryArray, NULL, SCIP_Tree::pendingbdchgs, SCIP_Tree::pendingbdchgssize, SCIP_ALLOC, SCIP_OKAY, and SCIPsetCalcMemGrowSize().

Referenced by treeAddPendingBdchg().

◆ forkCaptureLPIState()

static void forkCaptureLPIState ( SCIP_FORK fork,
int  nuses 
)
static

increases the reference counter of the LP state in the fork

Parameters
forkfork data
nusesnumber to add to the usage counter

Definition at line 160 of file tree.c.

References SCIP_Fork::nlpistateref, NULL, and SCIPdebugMessage.

Referenced by focusnodeToFork(), forkCreate(), and SCIPnodeCaptureLPIState().

◆ forkReleaseLPIState()

static SCIP_RETCODE forkReleaseLPIState ( SCIP_FORK fork,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)
static

decreases the reference counter of the LP state in the fork

Parameters
forkfork data
blkmemblock memory buffers
lpcurrent LP data

Definition at line 175 of file tree.c.

References SCIP_Fork::lpistate, SCIP_Fork::nlpistateref, NULL, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, and SCIPlpFreeState().

Referenced by SCIPnodeReleaseLPIState().

◆ subrootCaptureLPIState()

static void subrootCaptureLPIState ( SCIP_SUBROOT subroot,
int  nuses 
)
static

increases the reference counter of the LP state in the subroot

Parameters
subrootsubroot data
nusesnumber to add to the usage counter

Definition at line 199 of file tree.c.

References SCIP_Subroot::nlpistateref, NULL, and SCIPdebugMessage.

Referenced by forkFree(), and SCIPnodeCaptureLPIState().

◆ subrootReleaseLPIState()

static SCIP_RETCODE subrootReleaseLPIState ( SCIP_SUBROOT subroot,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)
static

decreases the reference counter of the LP state in the subroot

Parameters
subrootsubroot data
blkmemblock memory buffers
lpcurrent LP data

Definition at line 215 of file tree.c.

References SCIP_Subroot::lpistate, SCIP_Subroot::nlpistateref, NULL, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, and SCIPlpFreeState().

Referenced by SCIPnodeReleaseLPIState().

◆ SCIPnodeCaptureLPIState()

SCIP_RETCODE SCIPnodeCaptureLPIState ( SCIP_NODE node,
int  nuses 
)

increases the reference counter of the LP state in the fork or subroot node

Parameters
nodefork/subroot node
nusesnumber to add to the usage counter

Definition at line 238 of file tree.c.

References SCIP_Node::data, SCIP_Node::fork, forkCaptureLPIState(), SCIP_Fork::nlpistateref, SCIP_Subroot::nlpistateref, NULL, SCIP_INVALIDDATA, SCIP_NODETYPE_FORK, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIP_Node::subroot, and subrootCaptureLPIState().

Referenced by junctionInit(), and pseudoforkCreate().

◆ SCIPnodeReleaseLPIState()

SCIP_RETCODE SCIPnodeReleaseLPIState ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)

◆ probingnodeCreate()

static SCIP_RETCODE probingnodeCreate ( SCIP_PROBINGNODE **  probingnode,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)
static

creates probingnode data without LP information

Parameters
probingnodepointer to probingnode data
blkmemblock memory
lpcurrent LP data

Definition at line 291 of file tree.c.

References BMSallocBlockMemory, NULL, SCIP_ALLOC, SCIP_OKAY, SCIPdebugMessage, SCIPlpGetNCols(), and SCIPlpGetNRows().

Referenced by treeCreateProbingNode().

◆ probingnodeUpdate()

◆ probingnodeFree()

static SCIP_RETCODE probingnodeFree ( SCIP_PROBINGNODE **  probingnode,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)
static

frees probingnode data

Parameters
probingnodeprobingnode data
blkmemblock memory
lpcurrent LP data

Definition at line 373 of file tree.c.

References BMSfreeBlockMemory, BMSfreeMemoryArray, NULL, SCIP_CALL, SCIP_OKAY, SCIPlpFreeNorms(), and SCIPlpFreeState().

Referenced by SCIPnodeFree(), and treeCreateProbingNode().

◆ junctionInit()

static SCIP_RETCODE junctionInit ( SCIP_JUNCTION junction,
SCIP_TREE tree 
)
static

initializes junction data

Parameters
junctionpointer to junction data
treebranch and bound tree

Definition at line 410 of file tree.c.

References SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, SCIP_Junction::nchildren, SCIP_Tree::nchildren, NULL, SCIP_CALL, SCIP_OKAY, SCIPnodeCaptureLPIState(), and SCIPtreeIsPathComplete().

Referenced by focusnodeToJunction().

◆ pseudoforkCreate()

static SCIP_RETCODE pseudoforkCreate ( SCIP_PSEUDOFORK **  pseudofork,
BMS_BLKMEM blkmem,
SCIP_TREE tree,
SCIP_LP lp 
)
static

creates pseudofork data

Parameters
pseudoforkpointer to pseudofork data
blkmemblock memory
treebranch and bound tree
lpcurrent LP data

Definition at line 434 of file tree.c.

References BMSallocBlockMemory, BMSduplicateBlockMemoryArray, SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, SCIP_Tree::nchildren, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIPlpGetNewcols(), SCIPlpGetNewrows(), SCIPlpGetNNewcols(), SCIPlpGetNNewrows(), SCIPnodeCaptureLPIState(), SCIProwCapture(), and SCIPtreeIsPathComplete().

Referenced by focusnodeToPseudofork().

◆ pseudoforkFree()

static SCIP_RETCODE pseudoforkFree ( SCIP_PSEUDOFORK **  pseudofork,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_LP lp 
)
static

frees pseudofork data

Parameters
pseudoforkpseudofork data
blkmemblock memory
setglobal SCIP settings
lpcurrent LP data

Definition at line 487 of file tree.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArrayNull, NULL, SCIP_CALL, SCIP_OKAY, and SCIProwRelease().

Referenced by SCIPnodeFree().

◆ forkCreate()

static SCIP_RETCODE forkCreate ( SCIP_FORK **  fork,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_PROB prob,
SCIP_TREE tree,
SCIP_LP lp 
)
static

◆ forkFree()

◆ subrootFree()

static SCIP_RETCODE subrootFree ( SCIP_SUBROOT **  subroot,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_LP lp 
)
static

frees subroot

Parameters
subrootsubroot data
blkmemblock memory
setglobal SCIP settings
lpcurrent LP data

Definition at line 674 of file tree.c.

References BMSfreeBlockMemory, BMSfreeBlockMemoryArrayNull, NULL, SCIP_CALL, SCIP_OKAY, and SCIProwRelease().

Referenced by SCIPnodeFree().

◆ treeRemoveSibling()

static void treeRemoveSibling ( SCIP_TREE tree,
SCIP_NODE sibling 
)
static

removes given sibling node from the siblings array

Parameters
treebranch and bound tree
siblingsibling node to remove

Definition at line 707 of file tree.c.

References SCIP_Sibling::arraypos, SCIP_Node::data, SCIP_Tree::nsiblings, NULL, SCIP_NODETYPE_SIBLING, SCIPnodeGetType(), SCIP_Node::sibling, SCIP_Tree::siblings, and SCIP_Tree::siblingsprio.

Referenced by SCIPnodeFocus(), and SCIPnodeFree().

◆ treeAddChild()

static SCIP_RETCODE treeAddChild ( SCIP_TREE tree,
SCIP_SET set,
SCIP_NODE child,
SCIP_Real  nodeselprio 
)
static

adds given child node to children array of focus node

Parameters
treebranch and bound tree
setglobal SCIP settings
childchild node to add
nodeselprionode selection priority of child node

Definition at line 733 of file tree.c.

References SCIP_Child::arraypos, SCIP_Node::child, SCIP_Tree::children, SCIP_Tree::childrenprio, SCIP_Node::data, SCIP_Tree::nchildren, NULL, SCIP_CALL, SCIP_NODETYPE_CHILD, SCIP_OKAY, SCIPnodeGetType(), and treeEnsureChildrenMem().

Referenced by nodeAssignParent().

◆ treeRemoveChild()

static void treeRemoveChild ( SCIP_TREE tree,
SCIP_NODE child 
)
static

removes given child node from the children array

Parameters
treebranch and bound tree
childchild node to remove

Definition at line 756 of file tree.c.

References SCIP_Child::arraypos, SCIP_Node::child, SCIP_Tree::children, SCIP_Tree::childrenprio, SCIP_Node::data, SCIP_Tree::nchildren, NULL, SCIP_NODETYPE_CHILD, and SCIPnodeGetType().

Referenced by nodeReleaseParent(), and SCIPnodeFocus().

◆ nodeAssignParent()

static SCIP_RETCODE nodeAssignParent ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_TREE tree,
SCIP_NODE parent,
SCIP_Real  nodeselprio 
)
static

makes node a child of the given parent node, which must be the focus node; if the child is a probing node, the parent node can also be a refocused node or a probing node

Parameters
nodechild node
blkmemblock memory buffers
setglobal SCIP settings
treebranch and bound tree
parentparent (= focus) node (or NULL, if node is root)
nodeselprionode selection priority of child node

Definition at line 784 of file tree.c.

References SCIP_Node::conssetchg, SCIP_Node::depth, SCIP_Node::domchg, SCIP_Node::estimate, SCIP_Tree::focusnode, SCIP_Node::lowerbound, NULL, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_CALL, SCIP_MAXDEPTHLEVEL, SCIP_MAXTREEDEPTH, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIPerrorMessage, SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPsetDebugMsg, SCIPsetIsInfinity(), SCIPtreeIsPathComplete(), and treeAddChild().

Referenced by SCIPnodeCreateChild(), and treeCreateProbingNode().

◆ nodeReleaseParent()

static SCIP_RETCODE nodeReleaseParent ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_TREE tree,
SCIP_LP lp 
)
static

◆ nodeCreate()

static SCIP_RETCODE nodeCreate ( SCIP_NODE **  node,
BMS_BLKMEM blkmem,
SCIP_SET set 
)
static

creates a node data structure

Parameters
nodepointer to node data structure
blkmemblock memory
setglobal SCIP settings

Definition at line 957 of file tree.c.

References BMSallocBlockMemory, FALSE, NULL, SCIP_ALLOC, SCIP_OKAY, SCIP_REOPTTYPE_NONE, and SCIPsetInfinity().

Referenced by SCIPnodeCreateChild(), and treeCreateProbingNode().

◆ SCIPnodeCreateChild()

SCIP_RETCODE SCIPnodeCreateChild ( SCIP_NODE **  node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_Real  nodeselprio,
SCIP_Real  estimate 
)

creates a child node of the focus node

Parameters
nodepointer to node data structure
blkmemblock memory
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
nodeselprionode selection priority of new node
estimateestimate for (transformed) objective value of best feasible solution in subtree

Definition at line 984 of file tree.c.

References SCIP_Tree::focusnode, SCIP_Tree::lastbranchparentid, SCIP_Stat::ncreatednodes, SCIP_Stat::ncreatednodesrun, nodeAssignParent(), nodeCreate(), NULL, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_CALL, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeSetEstimate(), SCIPsetDebugMsg, SCIPtreeIsPathComplete(), SCIPvisualNewChild(), and SCIP_Stat::visual.

Referenced by propAndSolve(), SCIPcreateChild(), SCIPreoptApply(), SCIPtreeBranchVar(), SCIPtreeBranchVarHole(), SCIPtreeBranchVarNary(), SCIPtreeCreateRoot(), and solveNode().

◆ SCIPtreeWasNodeLastBranchParent()

SCIP_Bool SCIPtreeWasNodeLastBranchParent ( SCIP_TREE tree,
SCIP_NODE node 
)

query if focus node was already branched on

Parameters
treebranch and bound tree
nodetree node, or NULL to check focus node

Definition at line 1033 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Tree::lastbranchparentid, NULL, SCIP_Node::number, and TRUE.

Referenced by SCIPwasNodeLastBranchParent().

◆ SCIPnodeFree()

SCIP_RETCODE SCIPnodeFree ( SCIP_NODE **  node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_TREE tree,
SCIP_LP lp 
)

◆ SCIPnodeCutoff()

◆ SCIPnodePropagateAgain()

void SCIPnodePropagateAgain ( SCIP_NODE node,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree 
)

marks node, that propagation should be applied again the next time, a node of its subtree is focused

Parameters
nodenode that should be propagated again
setglobal SCIP settings
statproblem statistics
treebranch and bound tree

Definition at line 1239 of file tree.c.

References SCIP_Node::active, SCIP_Node::depth, NULL, SCIP_Node::reprop, SCIP_Tree::repropdepth, SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPsetDebugMsg, SCIPvisualMarkedRepropagateNode(), TRUE, and SCIP_Stat::visual.

Referenced by SCIPconflictFlushConss(), SCIPnodeAddBoundinfer(), SCIPnodeAddHoleinfer(), SCIPrepropagateNode(), and tightenSingleVar().

◆ SCIPnodeMarkPropagated()

void SCIPnodeMarkPropagated ( SCIP_NODE node,
SCIP_TREE tree 
)

marks node, that it is completely propagated in the current repropagation subtree level

Parameters
nodenode that should be marked to be propagated
treebranch and bound tree

Definition at line 1265 of file tree.c.

References SCIP_Node::active, SCIP_Node::depth, FALSE, NULL, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Node::reprop, SCIP_Tree::repropdepth, and SCIP_Node::repropsubtreemark.

Referenced by propagateDomains().

◆ treeNextRepropsubtreecount()

static void treeNextRepropsubtreecount ( SCIP_TREE tree)
static

moves the subtree repropagation counter to the next value

Parameters
treebranch and bound tree

Definition at line 1295 of file tree.c.

References MAXREPROPMARK, NULL, and SCIP_Tree::repropsubtreecount.

Referenced by nodeRepropagate().

◆ nodeRepropagate()

static SCIP_RETCODE nodeRepropagate ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_Bool cutoff 
)
static

applies propagation on the node, that was marked to be propagated again

Parameters
nodenode to apply propagation on
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
transprobtransformed problem
origproboriginal problem
primalprimal data
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure
cutoffpointer to store whether the node can be cut off

Definition at line 1307 of file tree.c.

References SCIP_Node::active, SCIP_Node::depth, SCIP_Node::domchg, FALSE, SCIP_Tree::focuslpfork, SCIP_Tree::focuslpstatefork, SCIP_Tree::focuslpstateforklpcount, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, SCIP_Tree::focussubroot, SCIP_Stat::nboundchgs, SCIP_Tree::nchildren, SCIP_Stat::nodeactivationtime, SCIP_Node::nodetype, SCIP_Stat::nrepropboundchgs, SCIP_Stat::nrepropcutoffs, SCIP_Stat::nreprops, SCIP_Tree::nsiblings, NULL, SCIP_Node::parent, SCIP_Node::reprop, SCIP_Tree::repropsubtreecount, SCIP_Node::repropsubtreemark, SCIP_Bool, SCIP_CALL, SCIP_Longint, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_FORK, SCIP_NODETYPE_JUNCTION, SCIP_NODETYPE_PSEUDOFORK, SCIP_NODETYPE_REFOCUSNODE, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIP_PROPTIMING_ALWAYS, SCIPclockIsRunning(), SCIPclockStart(), SCIPclockStop(), SCIPdomchgMakeStatic(), SCIPeventqueueDelay(), SCIPeventqueueIsDelayed(), SCIPeventqueueProcess(), SCIPnodeCutoff(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPpropagateDomains(), SCIPsetDebugMsg, SCIPvisualRepropagatedNode(), treeNextRepropsubtreecount(), and SCIP_Stat::visual.

Referenced by nodeActivate(), and treeSwitchPath().

◆ nodeActivate()

static SCIP_RETCODE nodeActivate ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_Bool cutoff 
)
static

informs node, that it is now on the active path and applies any domain and constraint set changes

Parameters
nodenode to activate
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
transprobtransformed problem
origproboriginal problem
primalprimal data
treebranch and bound tree
reoptreotimization data structure
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure
cutoffpointer to store whether the node can be cut off

Definition at line 1458 of file tree.c.

References SCIP_Node::active, SCIP_Node::conssetchg, SCIP_Node::depth, SCIP_Node::domchg, SCIP_Stat::nactivatednodes, nodeRepropagate(), NULL, SCIP_Node::parent, SCIP_Node::reprop, SCIP_Node::repropsubtreemark, SCIP_Bool, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPconssetchgApply(), SCIPdomchgApply(), SCIPnodeCutoff(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPsetDebugMsg, SCIPtreeProbing(), and TRUE.

Referenced by treeSwitchPath().

◆ nodeDeactivate()

static SCIP_RETCODE nodeDeactivate ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue 
)
static

informs node, that it is no longer on the active path and undoes any domain and constraint set changes

Parameters
nodenode to deactivate
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
lpcurrent LP data
branchcandbranching candidate storage
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue

Definition at line 1527 of file tree.c.

References SCIP_Node::active, SCIP_Node::conssetchg, SCIP_Node::data, SCIP_Node::domchg, FALSE, SCIP_Node::fork, SCIP_Node::junction, SCIP_Junction::nchildren, SCIP_Pseudofork::nchildren, SCIP_Fork::nchildren, SCIP_Subroot::nchildren, SCIP_Stat::ndeactivatednodes, NULL, SCIP_Node::pseudofork, SCIP_Node::repropsubtreemark, SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_DEADEND, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_FORK, SCIP_NODETYPE_JUNCTION, SCIP_NODETYPE_LEAF, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_PSEUDOFORK, SCIP_NODETYPE_REFOCUSNODE, SCIP_NODETYPE_SIBLING, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIPconssetchgUndo(), SCIPdomchgUndo(), SCIPerrorMessage, SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPsetDebugMsg, SCIPtreeProbing(), and SCIP_Node::subroot.

Referenced by treeBacktrackProbing(), and treeSwitchPath().

◆ SCIPnodeAddCons()

SCIP_RETCODE SCIPnodeAddCons ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_CONS cons 
)

adds constraint locally to the node and captures it; activates constraint, if node is active; if a local constraint is added to the root node, it is automatically upgraded into a global constraint

Parameters
nodenode to add constraint to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
consconstraint to add

Definition at line 1599 of file tree.c.

References SCIP_Node::active, SCIP_ConsSetChg::addedconss, SCIP_Node::conssetchg, SCIP_Node::depth, SCIP_Tree::effectiverootdepth, SCIP_Stat::nactiveconssadded, NULL, SCIP_Tree::root, SCIP_Cons::scip, SCIP_CALL, SCIP_INVALIDDATA, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_OKAY, SCIPconsIsActive(), SCIPconsIsGlobal(), SCIPconssetchgAddAddedCons(), SCIPerrorMessage, SCIPnodeGetDepth(), SCIPnodeGetType(), and SCIP_Cons::validdepth.

Referenced by createAndAddProofcons(), SCIPaddCons(), SCIPaddConsNode(), and tightenSingleVar().

◆ SCIPnodeDelCons()

SCIP_RETCODE SCIPnodeDelCons ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_CONS cons 
)

locally deletes constraint at the given node by disabling its separation, enforcing, and propagation capabilities at the node; captures constraint; disables constraint, if node is active

Parameters
nodenode to add constraint to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
consconstraint to locally delete

Definition at line 1642 of file tree.c.

References SCIP_Node::active, SCIP_Node::conssetchg, SCIP_Node::depth, SCIP_ConsSetChg::disabledconss, SCIP_Cons::enabled, SCIP_Cons::name, NULL, SCIP_CALL, SCIP_OKAY, SCIPconsDisable(), SCIPconssetchgAddDisabledCons(), SCIPsetDebugMsg, and SCIP_Cons::updatedisable.

Referenced by SCIPdelConsLocal(), and SCIPdelConsNode().

◆ treeAddPendingBdchg()

static SCIP_RETCODE treeAddPendingBdchg ( SCIP_TREE tree,
SCIP_SET set,
SCIP_NODE node,
SCIP_VAR var,
SCIP_Real  newbound,
SCIP_BOUNDTYPE  boundtype,
SCIP_CONS infercons,
SCIP_PROP inferprop,
int  inferinfo,
SCIP_Bool  probingchange 
)
static

adds the given bound change to the list of pending bound changes

Parameters
treebranch and bound tree
setglobal SCIP settings
nodenode to add bound change to
varvariable to change the bounds for
newboundnew value for bound
boundtypetype of bound: lower or upper bound
inferconsconstraint that deduced the bound change, or NULL
inferproppropagator that deduced the bound change, or NULL
inferinfouser information for inference to help resolving the conflict
probingchangeis the bound change a temporary setting due to probing?

Definition at line 1716 of file tree.c.

References bound, SCIP_PendingBdchg::boundtype, SCIP_Node::depth, SCIP_PendingBdchg::infercons, SCIP_PendingBdchg::inferinfo, SCIP_PendingBdchg::inferprop, SCIP_PendingBdchg::newbound, SCIP_PendingBdchg::node, SCIP_Tree::npendingbdchgs, NULL, SCIP_Tree::pendingbdchgs, SCIP_PendingBdchg::probingchange, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPdebugCheckLbGlobal, SCIPdebugCheckUbGlobal, SCIPsetIsEQ(), SCIPsetIsFeasGE(), SCIPsetIsFeasLE(), SCIPvarAdjustBd(), SCIPvarCapture(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), treeEnsurePendingbdchgsMem(), and SCIP_PendingBdchg::var.

Referenced by SCIPnodeAddBoundinfer().

◆ SCIPnodeAddBoundinfer()

SCIP_RETCODE SCIPnodeAddBoundinfer ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_VAR var,
SCIP_Real  newbound,
SCIP_BOUNDTYPE  boundtype,
SCIP_CONS infercons,
SCIP_PROP inferprop,
int  inferinfo,
SCIP_Bool  probingchange 
)

adds bound change with inference information to focus node, child of focus node, or probing node; if possible, adjusts bound to integral value; at most one of infercons and inferprop may be non-NULL

Parameters
nodenode to add bound change to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
cliquetableclique table data structure
varvariable to change the bounds for
newboundnew value for bound
boundtypetype of bound: lower or upper bound
inferconsconstraint that deduced the bound change, or NULL
inferproppropagator that deduced the bound change, or NULL
inferinfouser information for inference to help resolving the conflict
probingchangeis the bound change a temporary setting due to probing?

Definition at line 1803 of file tree.c.

References SCIP_Node::active, SCIP_DomChgDyn::boundchgs, SCIP_Node::depth, SCIP_Node::domchg, SCIP_DomChg::domchgdyn, SCIP_DomChgDyn::domchgtype, SCIP_Tree::effectiverootdepth, SCIP_Tree::focuslpstateforklpcount, SCIP_Tree::focusnode, SCIP_Stat::lpcount, MAX, SCIP_DomChgDyn::nboundchgs, SCIP_BoundChg::newbound, SCIP_Node::nodetype, NULL, SCIP_Node::number, SCIP_Tree::path, SCIP_Tree::probingroot, SCIP_Tree::root, SCIP_Bool, SCIP_BOUNDCHGTYPE_BRANCHING, SCIP_BOUNDCHGTYPE_CONSINFER, SCIP_BOUNDCHGTYPE_PROPINFER, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_DOMCHGTYPE_DYNAMIC, SCIP_INVALID, SCIP_INVALIDDATA, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIP_Real, SCIP_STAGE_SOLVING, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIPABORT, SCIPboundchgApply(), SCIPconsGetName(), SCIPdebugCheckInference, SCIPdomchgAddBoundchg(), SCIPerrorMessage, SCIPlpGetModifiedProvedPseudoObjval(), SCIPlpGetModifiedPseudoObjval(), SCIPnodeCutoff(), SCIPnodeGetDepth(), SCIPnodeGetType(), SCIPnodePropagateAgain(), SCIPnodeUpdateLowerbound(), SCIPpropGetName(), SCIPsetDebugMsg, SCIPsetIsFeasGE(), SCIPsetIsFeasLE(), SCIPsetIsGT(), SCIPsetIsInfinity(), SCIPsetIsLE(), SCIPsetIsLT(), SCIPstatIncrement, SCIPtreeGetCurrentNode(), SCIPtreeHasCurrentNodeLP(), SCIPvarAdjustLb(), SCIPvarAdjustUb(), SCIPvarChgBdGlobal(), SCIPvarGetConflictingBdchgDepth(), SCIPvarGetLbGlobal(), SCIPvarGetLbLocal(), SCIPvarGetLPSol(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetProbvarBound(), SCIPvarGetStatus(), SCIPvarGetUbGlobal(), SCIPvarGetUbLocal(), treeAddPendingBdchg(), and SCIP_BoundChg::var.

Referenced by SCIPinferBinvarCons(), SCIPinferBinvarProp(), SCIPinferVarLbCons(), SCIPinferVarLbProp(), SCIPinferVarUbCons(), SCIPinferVarUbProp(), SCIPnodeAddBoundchg(), SCIPnodePropagateImplics(), and treeApplyPendingBdchgs().

◆ SCIPnodeAddBoundchg()

SCIP_RETCODE SCIPnodeAddBoundchg ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_VAR var,
SCIP_Real  newbound,
SCIP_BOUNDTYPE  boundtype,
SCIP_Bool  probingchange 
)

adds bound change to focus node, or child of focus node, or probing node; if possible, adjusts bound to integral value

Parameters
nodenode to add bound change to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
cliquetableclique table data structure
varvariable to change the bounds for
newboundnew value for bound
boundtypetype of bound: lower or upper bound
probingchangeis the bound change a temporary setting due to probing?

Definition at line 2078 of file tree.c.

References NULL, SCIP_CALL, SCIP_OKAY, and SCIPnodeAddBoundinfer().

Referenced by addSplitcons(), applyImplic(), changeAncestorBranchings(), conflictAddConflictCons(), fixBounds(), fixInterdiction(), focusnodeCleanupVars(), SCIPchgVarLb(), SCIPchgVarLbGlobal(), SCIPchgVarLbNode(), SCIPchgVarLbProbing(), SCIPchgVarUb(), SCIPchgVarUbGlobal(), SCIPchgVarUbNode(), SCIPchgVarUbProbing(), SCIPfixVarProbing(), SCIPinferVarLbCons(), SCIPinferVarLbProp(), SCIPinferVarUbCons(), SCIPinferVarUbProp(), SCIPshrinkDisjunctiveVarSet(), SCIPtightenVarLb(), SCIPtightenVarLbGlobal(), SCIPtightenVarUb(), SCIPtightenVarUbGlobal(), SCIPtreeBranchVar(), SCIPtreeBranchVarHole(), SCIPtreeBranchVarNary(), SCIPvarAddVlb(), SCIPvarAddVub(), SCIPvarFixBinary(), sepastoreApplyLb(), sepastoreApplyUb(), tightenSingleVar(), and varAddImplic().

◆ SCIPnodeAddHoleinfer()

SCIP_RETCODE SCIPnodeAddHoleinfer ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_EVENTQUEUE eventqueue,
SCIP_VAR var,
SCIP_Real  left,
SCIP_Real  right,
SCIP_CONS infercons,
SCIP_PROP inferprop,
int  inferinfo,
SCIP_Bool  probingchange,
SCIP_Bool added 
)

adds hole with inference information to focus node, child of focus node, or probing node; if possible, adjusts bound to integral value; at most one of infercons and inferprop may be non-NULL

Parameters
nodenode to add bound change to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
eventqueueevent queue
varvariable to change the bounds for
leftleft bound of open interval defining the hole (left,right)
rightright bound of open interval defining the hole (left,right)
inferconsconstraint that deduced the bound change, or NULL
inferproppropagator that deduced the bound change, or NULL
inferinfouser information for inference to help resolving the conflict
probingchangeis the bound change a temporary setting due to probing?
addedpointer to store whether the hole was added, or NULL

Definition at line 2107 of file tree.c.

References SCIP_Node::active, SCIP_Node::depth, SCIP_Tree::effectiverootdepth, FALSE, SCIP_Tree::focusnode, SCIP_Stat::nholechgs, SCIP_Node::nodetype, SCIP_Stat::nprobholechgs, NULL, SCIP_Tree::probingroot, SCIP_Tree::root, SCIP_CALL, SCIP_INVALIDDATA, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIP_Real, SCIP_STAGE_SOLVING, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIPABORT, SCIPconsGetName(), SCIPerrorMessage, SCIPnodeGetDepth(), SCIPnodeGetType(), SCIPnodePropagateAgain(), SCIPpropGetName(), SCIPsetDebugMsg, SCIPsetIsEQ(), SCIPsetIsGE(), SCIPsetIsLE(), SCIPsetIsLT(), SCIPvarAddHoleGlobal(), SCIPvarAdjustLb(), SCIPvarAdjustUb(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetProbvarHole(), SCIPvarGetStatus(), and SCIPvarGetUbLocal().

Referenced by SCIPnodeAddHolechg().

◆ SCIPnodeAddHolechg()

SCIP_RETCODE SCIPnodeAddHolechg ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_EVENTQUEUE eventqueue,
SCIP_VAR var,
SCIP_Real  left,
SCIP_Real  right,
SCIP_Bool  probingchange,
SCIP_Bool added 
)

adds hole change to focus node, or child of focus node

Parameters
nodenode to add bound change to
blkmemblock memory
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
eventqueueevent queue
varvariable to change the bounds for
leftleft bound of open interval defining the hole (left,right)
rightright bound of open interval defining the hole (left,right)
probingchangeis the bound change a temporary setting due to probing?
addedpointer to store whether the hole was added, or NULL

Definition at line 2228 of file tree.c.

References SCIP_Node::depth, SCIP_Node::nodetype, NULL, SCIP_CALL, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_OKAY, SCIPnodeAddHoleinfer(), SCIPsetDebugMsg, and SCIPvarGetName().

◆ treeApplyPendingBdchgs()

static SCIP_RETCODE treeApplyPendingBdchgs ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable 
)
static

applies the pending bound changes

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
cliquetableclique table data structure

Definition at line 2261 of file tree.c.

References SCIP_PendingBdchg::boundtype, SCIP_Tree::cutoffdepth, SCIP_Node::depth, SCIP_Tree::effectiverootdepth, SCIP_PendingBdchg::infercons, SCIP_PendingBdchg::inferinfo, SCIP_PendingBdchg::inferprop, SCIP_PendingBdchg::newbound, SCIP_PendingBdchg::node, SCIP_Tree::npendingbdchgs, NULL, SCIP_Tree::pendingbdchgs, SCIP_PendingBdchg::probingchange, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPnodeAddBoundinfer(), SCIPnodeCutoff(), SCIPnodeGetDepth(), SCIPsetDebugMsg, SCIPsetIsGT(), SCIPsetIsLT(), SCIPvarGetConflictingBdchgDepth(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetUbLocal(), SCIPvarRelease(), and SCIP_PendingBdchg::var.

Referenced by treeBacktrackProbing(), and treeSwitchPath().

◆ SCIPnodeUpdateLowerbound()

void SCIPnodeUpdateLowerbound ( SCIP_NODE node,
SCIP_STAT stat,
SCIP_SET set,
SCIP_TREE tree,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_Real  newbound 
)

if given value is larger than the node's lower bound, sets the node's lower bound to the new value

Parameters
nodenode to update lower bound for
statproblem statistics
setglobal SCIP settings
treebranch and bound tree
transprobtransformed problem after presolve
origproboriginal problem
newboundnew lower bound for the node (if it's larger than the old one)

Definition at line 2356 of file tree.c.

References SCIP_Node::depth, SCIP_Node::estimate, SCIP_Stat::lastlowerbound, SCIP_Node::lowerbound, MAX, NULL, SCIP_Stat::rootlowerbound, SCIP_NODETYPE_PROBINGNODE, SCIP_Real, SCIPnodeGetType(), SCIPsetInfinity(), SCIPsetIsEQ(), SCIPstatUpdatePrimalDualIntegrals(), SCIPtreeGetLowerbound(), SCIPvisualLowerbound(), and SCIP_Stat::visual.

Referenced by applyBounding(), initSolve(), priceAndCutLoop(), SCIPnodeAddBoundinfer(), SCIPnodeUpdateLowerboundLP(), SCIPpriceLoop(), SCIPupdateNodeLowerbound(), solveNode(), and solveNodeRelax().

◆ SCIPnodeUpdateLowerboundLP()

SCIP_RETCODE SCIPnodeUpdateLowerboundLP ( SCIP_NODE node,
SCIP_SET set,
SCIP_STAT stat,
SCIP_TREE tree,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp 
)

updates lower bound of node using lower bound of LP

Parameters
nodenode to set lower bound for
setglobal SCIP settings
statproblem statistics
treebranch and bound tree
transprobtransformed problem after presolve
origproboriginal problem
lpLP data

Definition at line 2400 of file tree.c.

References SCIP_Lp::flushed, SCIP_Lp::lpsolstat, NULL, SCIP_CALL, SCIP_LPSOLSTAT_ITERLIMIT, SCIP_LPSOLSTAT_TIMELIMIT, SCIP_OKAY, SCIP_Real, SCIPlpGetObjval(), SCIPlpGetProvedLowerbound(), and SCIPnodeUpdateLowerbound().

Referenced by priceAndCutLoop(), propAndSolve(), SCIPendDive(), SCIPtreeEndProbing(), and solveNodeInitialLP().

◆ SCIPchildChgNodeselPrio()

void SCIPchildChgNodeselPrio ( SCIP_TREE tree,
SCIP_NODE child,
SCIP_Real  priority 
)

change the node selection priority of the given child

Parameters
treebranch and bound tree
childchild to update the node selection priority
prioritynode selection priority value

Definition at line 2434 of file tree.c.

References SCIP_Child::arraypos, SCIP_Node::child, SCIP_Tree::childrenprio, SCIP_Node::data, SCIP_NODETYPE_CHILD, and SCIPnodeGetType().

Referenced by SCIPchgChildPrio().

◆ SCIPnodeSetEstimate()

void SCIPnodeSetEstimate ( SCIP_NODE node,
SCIP_SET set,
SCIP_Real  newestimate 
)

sets the node's estimated bound to the new value

Parameters
nodenode to update lower bound for
setglobal SCIP settings
newestimatenew estimated bound for the node

Definition at line 2452 of file tree.c.

References SCIP_Node::estimate, SCIP_Node::lowerbound, NULL, and SCIPsetIsRelGE().

Referenced by SCIPnodeCreateChild(), SCIPreoptApply(), and updateEstimate().

◆ SCIPnodePropagateImplics()

SCIP_RETCODE SCIPnodePropagateImplics ( SCIP_NODE node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_Bool cutoff 
)

propagates implications of binary fixings at the given node triggered by the implication graph and the clique table

Parameters
nodenode to propagate implications on
blkmemblock memory
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
cliquetableclique table data structure
cutoffpointer to store whether the node can be cut off

Definition at line 2468 of file tree.c.

References SCIP_Node::domchg, FALSE, NULL, SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_MULTAGGR, SCIPboundchgGetBoundtype(), SCIPboundchgGetVar(), SCIPboundchgIsRedundant(), SCIPcliqueGetNVars(), SCIPcliqueGetValues(), SCIPcliqueGetVars(), SCIPdomchgGetBoundchg(), SCIPdomchgGetNBoundchgs(), SCIPnodeAddBoundinfer(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeIsActive(), SCIPsetDebugMsg, SCIPsetIsFeasGE(), SCIPsetIsFeasGT(), SCIPsetIsFeasLE(), SCIPsetIsFeasLT(), SCIPvarGetCliques(), SCIPvarGetImplBounds(), SCIPvarGetImplTypes(), SCIPvarGetImplVars(), SCIPvarGetLbLocal(), SCIPvarGetNCliques(), SCIPvarGetNImpls(), SCIPvarGetProbvar(), SCIPvarGetStatus(), SCIPvarGetUbLocal(), SCIPvarIsBinary(), and TRUE.

Referenced by SCIPpropagateProbingImplications().

◆ treeUpdatePathLPSize()

◆ treeFindSwitchForks()

static void treeFindSwitchForks ( SCIP_TREE tree,
SCIP_NODE node,
SCIP_NODE **  commonfork,
SCIP_NODE **  newlpfork,
SCIP_NODE **  newlpstatefork,
SCIP_NODE **  newsubroot,
SCIP_Bool cutoff 
)
static

finds the common fork node, the new LP state defining fork, and the new focus subroot, if the path is switched to the given node

Parameters
treebranch and bound tree
nodenew focus node, or NULL
commonforkpointer to store common fork node of old and new focus node
newlpforkpointer to store the new LP defining fork node
newlpstateforkpointer to store the new LP state defining fork node
newsubrootpointer to store the new subroot node
cutoffpointer to store whether the given node can be cut off and no path switching should be performed

Definition at line 2763 of file tree.c.

References SCIP_Node::active, SCIP_Node::cutoff, SCIP_Tree::cutoffdepth, SCIP_Node::depth, FALSE, SCIP_Tree::focuslpfork, SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, SCIP_Tree::focussubroot, NULL, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Node::reprop, SCIP_Tree::repropdepth, SCIP_Tree::root, SCIP_NODETYPE_FORK, SCIP_NODETYPE_PSEUDOFORK, SCIP_NODETYPE_SUBROOT, SCIPdebugMessage, SCIPnodeGetType(), and TRUE.

Referenced by SCIPnodeFocus().

◆ treeSwitchPath()

static SCIP_RETCODE treeSwitchPath ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_NODE fork,
SCIP_NODE focusnode,
SCIP_Bool cutoff 
)
static

switches the active path to the new focus node, applies domain and constraint set changes

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
primalprimal data
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure
forkcommon fork node of old and new focus node, or NULL
focusnodenew focus node, or NULL
cutoffpointer to store whether the new focus node can be cut off

Definition at line 3063 of file tree.c.

References SCIP_Node::active, SCIP_Node::cutoff, SCIP_Node::depth, FALSE, nodeActivate(), nodeDeactivate(), nodeRepropagate(), NULL, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Node::reprop, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPeventqueueDelay(), SCIPeventqueueProcess(), SCIPnodeCutoff(), SCIPnodeGetType(), SCIPsetDebugMsg, treeApplyPendingBdchgs(), treeEnsurePathMem(), treeUpdatePathLPSize(), and TRUE.

Referenced by SCIPnodeFocus().

◆ subrootConstructLP()

static SCIP_RETCODE subrootConstructLP ( SCIP_NODE subroot,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_LP lp 
)
static

loads the subroot's LP data

Parameters
subrootsubroot node to construct LP for
blkmemblock memory buffers
setglobal SCIP settings
eventqueueevent queue
eventfilterglobal event filter
lpcurrent LP data

Definition at line 3200 of file tree.c.

References SCIP_Subroot::cols, SCIP_Node::data, SCIP_Node::depth, SCIP_Subroot::ncols, SCIP_Subroot::nrows, NULL, r, SCIP_Subroot::rows, SCIP_CALL, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIPlpAddCol(), SCIPlpAddRow(), SCIPnodeGetType(), and SCIP_Node::subroot.

Referenced by SCIPtreeLoadLP().

◆ forkAddLP()

static SCIP_RETCODE forkAddLP ( SCIP_NODE fork,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_LP lp 
)
static

loads the fork's additional LP data

Parameters
forkfork node to construct additional LP for
blkmemblock memory buffers
setglobal SCIP settings
eventqueueevent queue
eventfilterglobal event filter
lpcurrent LP data

Definition at line 3245 of file tree.c.

References SCIP_Fork::addedcols, SCIP_Fork::addedrows, SCIP_Node::data, SCIP_Node::depth, SCIP_Node::fork, SCIP_Fork::naddedcols, SCIP_Fork::naddedrows, NULL, r, SCIP_CALL, SCIP_NODETYPE_FORK, SCIP_OKAY, SCIPlpAddCol(), SCIPlpAddRow(), and SCIPnodeGetType().

Referenced by SCIPtreeLoadLP().

◆ pseudoforkAddLP()

static SCIP_RETCODE pseudoforkAddLP ( SCIP_NODE pseudofork,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_LP lp 
)
static

loads the pseudofork's additional LP data

Parameters
pseudoforkpseudofork node to construct additional LP for
blkmemblock memory buffers
setglobal SCIP settings
eventqueueevent queue
eventfilterglobal event filter
lpcurrent LP data

Definition at line 3290 of file tree.c.

References SCIP_Pseudofork::addedcols, SCIP_Pseudofork::addedrows, SCIP_Node::data, SCIP_Node::depth, SCIP_Pseudofork::naddedcols, SCIP_Pseudofork::naddedrows, NULL, SCIP_Node::pseudofork, r, SCIP_CALL, SCIP_NODETYPE_PSEUDOFORK, SCIP_OKAY, SCIPlpAddCol(), SCIPlpAddRow(), and SCIPnodeGetType().

Referenced by SCIPtreeLoadLP().

◆ treeCheckPath()

◆ SCIPtreeLoadLP()

SCIP_RETCODE SCIPtreeLoadLP ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_LP lp,
SCIP_Bool initroot 
)

◆ SCIPtreeLoadLPState()

SCIP_RETCODE SCIPtreeLoadLPState ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTQUEUE eventqueue,
SCIP_LP lp 
)

◆ nodeToLeaf()

static SCIP_RETCODE nodeToLeaf ( SCIP_NODE **  node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_NODE lpstatefork,
SCIP_Real  cutoffbound 
)
static

converts node into LEAF and moves it into the array of the node queue if node's lower bound is greater or equal than the given upper bound, the node is deleted; otherwise, it is moved to the node queue; anyways, the given pointer is NULL after the call

Parameters
nodepointer to child or sibling node to convert
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
lpstateforkLP state defining fork of the node
cutoffboundcutoff bound: all nodes with lowerbound >= cutoffbound are cut off

Definition at line 3655 of file tree.c.

References SCIP_Node::active, SCIP_Node::depth, SCIP_Tree::effectiverootdepth, FALSE, SCIP_Tree::focusnode, SCIP_Tree::leaves, SCIP_Node::lowerbound, NULL, SCIP_Node::parent, SCIP_Tree::root, SCIP_CALL, SCIP_EVENTTYPE_NODEINFEASIBLE, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_FORK, SCIP_NODETYPE_JUNCTION, SCIP_NODETYPE_LEAF, SCIP_NODETYPE_PSEUDOFORK, SCIP_NODETYPE_SIBLING, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIPdomchgMakeStatic(), SCIPlpGetSolstat(), SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodepqInsert(), SCIPreoptCheckCutoff(), SCIPsetDebugMsg, SCIPsetIsGE(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPvisualCutoffNode(), and SCIP_Stat::visual.

Referenced by focusnodeToLeaf(), and treeNodesToQueue().

◆ focusnodeCleanupVars()

static SCIP_RETCODE focusnodeCleanupVars ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTQUEUE eventqueue,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CLIQUETABLE cliquetable,
SCIP_Bool  inlp 
)
static

removes variables from the problem, that are marked to be deletable, and were created at the focusnode; only removes variables that were created at the focusnode, unless inlp is TRUE (e.g., when the node is cut off, anyway)

Parameters
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventqueueevent queue
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
cliquetableclique table data structure
inlpshould variables in the LP be deleted, too?

Definition at line 3737 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Stat::nnodes, NULL, SCIP_Prob::nvars, SCIP_Tree::root, SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPlpFlush(), SCIPlpGetNCols(), SCIPlpGetNNewcols(), SCIPlpShrinkCols(), SCIPnodeAddBoundchg(), SCIPnodeGetType(), SCIPprobDelVar(), SCIPprobPerformVarDeletions(), SCIPsetDebugMsg, SCIPsetIsFeasNegative(), SCIPsetIsFeasPositive(), SCIPsetIsFeasZero(), SCIPtreeProbing(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), SCIPvarIsDeletable(), SCIPvarIsInLP(), SCIPvarMarkNotDeletable(), and SCIP_Prob::vars.

Referenced by focusnodeToDeadend(), focusnodeToFork(), and focusnodeToPseudofork().

◆ focusnodeToDeadend()

static SCIP_RETCODE focusnodeToDeadend ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTQUEUE eventqueue,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CLIQUETABLE cliquetable 
)
static

converts the focus node into a dead-end node

Parameters
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventqueueevent queue
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
cliquetableclique table data structure

Definition at line 3838 of file tree.c.

References SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, focusnodeCleanupVars(), SCIP_Tree::nchildren, SCIP_Node::nodetype, NULL, SCIP_CALL, SCIP_NODETYPE_DEADEND, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeReleaseLPIState(), SCIPsetDebugMsg, SCIPtreeProbing(), and TRUE.

Referenced by SCIPnodeFocus().

◆ focusnodeToLeaf()

static SCIP_RETCODE focusnodeToLeaf ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_NODE lpstatefork,
SCIP_Real  cutoffbound 
)
static

converts the focus node into a leaf node (if it was postponed)

Parameters
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
lpstateforkLP state defining fork of the node
cutoffboundcutoff bound: all nodes with lowerbound >= cutoffbound are cut off

Definition at line 3878 of file tree.c.

References SCIP_Node::active, SCIP_Tree::focusnode, nodeToLeaf(), NULL, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_OKAY, SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPsetDebugMsg, and SCIPtreeProbing().

Referenced by SCIPnodeFocus().

◆ focusnodeToJunction()

static SCIP_RETCODE focusnodeToJunction ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_EVENTQUEUE eventqueue,
SCIP_TREE tree,
SCIP_LP lp 
)
static

converts the focus node into a junction node

Parameters
blkmemblock memory buffers
setglobal SCIP settings
eventqueueevent queue
treebranch and bound tree
lpcurrent LP data

Definition at line 3908 of file tree.c.

References SCIP_Node::active, SCIP_Node::data, SCIP_Node::domchg, SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, SCIP_Node::junction, junctionInit(), SCIP_Node::nodetype, NULL, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_JUNCTION, SCIP_OKAY, SCIPdomchgMakeStatic(), SCIPlpGetNNewcols(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeReleaseLPIState(), SCIPsetDebugMsg, and SCIPtreeProbing().

Referenced by focusnodeToFork(), and SCIPnodeFocus().

◆ focusnodeToPseudofork()

static SCIP_RETCODE focusnodeToPseudofork ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTQUEUE eventqueue,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CLIQUETABLE cliquetable 
)
static

converts the focus node into a pseudofork node

Parameters
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventqueueevent queue
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
cliquetableclique table data structure

Definition at line 3945 of file tree.c.

References SCIP_Node::active, SCIP_Node::data, SCIP_Node::domchg, FALSE, SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, focusnodeCleanupVars(), SCIP_Tree::nchildren, SCIP_Node::nodetype, NULL, SCIP_Node::pseudofork, pseudoforkCreate(), SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PSEUDOFORK, SCIP_OKAY, SCIPdomchgMakeStatic(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeReleaseLPIState(), SCIPsetDebugMsg, and SCIPtreeProbing().

Referenced by SCIPnodeFocus().

◆ focusnodeToFork()

static SCIP_RETCODE focusnodeToFork ( BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CLIQUETABLE cliquetable 
)
static

converts the focus node into a fork node

Parameters
blkmemblock memory buffers
setglobal SCIP settings
messagehdlrmessage handler
statdynamic problem statistics
eventqueueevent queue
eventfilterglobal event filter
transprobtransformed problem after presolve
origproboriginal problem
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
cliquetableclique table data structure

Definition at line 3996 of file tree.c.

References SCIP_Node::active, SCIP_Node::data, SCIP_Node::depth, SCIP_Node::domchg, FALSE, SCIP_Lp::flushed, SCIP_Tree::focuslpstatefork, SCIP_Tree::focusnode, focusnodeCleanupVars(), focusnodeToJunction(), SCIP_Node::fork, forkCaptureLPIState(), forkCreate(), SCIP_Tree::nchildren, SCIP_Stat::nlps, SCIP_Stat::nnodes, SCIP_Node::nodetype, NULL, SCIP_Lp::resolvelperror, SCIP_Tree::root, SCIP_Bool, SCIP_CALL, SCIP_LPSOLSTAT_OPTIMAL, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_FORK, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIP_VERBLEVEL_FULL, SCIPdomchgMakeStatic(), SCIPlpCleanupAll(), SCIPlpCleanupNew(), SCIPlpGetNCols(), SCIPlpGetNNewcols(), SCIPlpGetNNewrows(), SCIPlpGetNRows(), SCIPlpGetSolstat(), SCIPlpRemoveAllObsoletes(), SCIPlpShrinkCols(), SCIPlpShrinkRows(), SCIPlpSolveAndEval(), SCIPmessagePrintVerbInfo(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodeReleaseLPIState(), SCIPsetDebugMsg, SCIPtreeProbing(), SCIP_Lp::solved, SCIP_Node::subroot, treeUpdatePathLPSize(), and TRUE.

Referenced by SCIPnodeFocus().

◆ treeNodesToQueue()

static SCIP_RETCODE treeNodesToQueue ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_LP lp,
SCIP_NODE **  nodes,
int *  nnodes,
SCIP_NODE lpstatefork,
SCIP_Real  cutoffbound 
)
static

puts all nodes in the array on the node queue and makes them LEAFs

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
statdynamic problem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
lpcurrent LP data
nodesarray of nodes to put on the queue
nnodespointer to number of nodes in the array
lpstateforkLP state defining fork of the nodes
cutoffboundcutoff bound: all nodes with lowerbound >= cutoffbound are cut off

Definition at line 4227 of file tree.c.

References nodeToLeaf(), NULL, SCIP_CALL, and SCIP_OKAY.

Referenced by SCIPnodeFocus(), and SCIPtreeCreateRoot().

◆ treeChildrenToSiblings()

◆ SCIPnodeFocus()

SCIP_RETCODE SCIPnodeFocus ( SCIP_NODE **  node,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_TREE tree,
SCIP_REOPT reopt,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_CONFLICTSTORE conflictstore,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable,
SCIP_Bool cutoff,
SCIP_Bool  postponed,
SCIP_Bool  exitsolve 
)

installs a child, a sibling, or a leaf node as the new focus node

Parameters
nodepointer to node to focus (or NULL to remove focus); the node is freed, if it was cut off due to a cut off subtree
blkmemblock memory buffers
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics
transprobtransformed problem
origproboriginal problem
primalprimal data
treebranch and bound tree
reoptreoptimization data structure
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
conflictstoreconflict store
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure
cutoffpointer to store whether the given node can be cut off
postponedwas the current focus node postponed?
exitsolveare we in exitsolve stage, so we only need to loose the children

Definition at line 4299 of file tree.c.

References SCIP_Node::active, SCIP_Tree::appliedeffectiverootdepth, SCIP_Tree::children, SCIP_Node::conssetchg, SCIP_Tree::correctlpdepth, SCIP_Primal::cutoffbound, SCIP_Tree::cutoffdepth, SCIP_Node::depth, SCIP_Node::domchg, SCIP_Tree::effectiverootdepth, FALSE, SCIP_Tree::focuslpconstructed, SCIP_Tree::focuslpfork, SCIP_Tree::focuslpstatefork, SCIP_Tree::focuslpstateforklpcount, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, focusnodeToDeadend(), focusnodeToFork(), focusnodeToJunction(), focusnodeToLeaf(), focusnodeToPseudofork(), SCIP_Tree::focussubroot, SCIP_Lp::isrelax, SCIP_Tree::leaves, SCIP_Node::lowerbound, SCIP_Stat::lpcount, SCIP_Stat::nbacktracks, SCIP_Tree::nchildren, SCIP_Stat::nearlybacktracks, SCIP_Tree::nsiblings, NULL, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Tree::pathnlpcols, SCIP_Tree::pathnlprows, SCIP_Stat::plungedepth, SCIP_Stat::referencebound, SCIP_Lp::resolvelperror, SCIP_Tree::root, SCIP_Bool, SCIP_CALL, SCIP_EVENTTYPE_NODEINFEASIBLE, SCIP_INVALIDDATA, SCIP_NODETYPE_CHILD, SCIP_NODETYPE_DEADEND, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_FORK, SCIP_NODETYPE_LEAF, SCIP_NODETYPE_PSEUDOFORK, SCIP_NODETYPE_SIBLING, SCIP_NODETYPE_SUBROOT, SCIP_OKAY, SCIPconssetchgMakeGlobal(), SCIPdebugCheckGlobalLowerbound, SCIPdebugCheckLocalLowerbound, SCIPdomchgApplyGlobal(), SCIPerrorMessage, SCIPlpGetNCols(), SCIPlpGetNNewcols(), SCIPlpGetNNewrows(), SCIPlpGetNRows(), SCIPlpGetSolstat(), SCIPlpMarkSize(), SCIPnodeCutoff(), SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetLowerbound(), SCIPnodeGetNumber(), SCIPnodeGetType(), SCIPnodepqCompare(), SCIPnodepqRemove(), SCIPreoptCheckCutoff(), SCIPsetDebugMsg, SCIPsetInfinity(), SCIPsetIsGE(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPtreeGetBestLeaf(), SCIPtreeIsPathComplete(), SCIPtreeProbing(), SCIPvisualCutoffNode(), SCIP_Tree::siblings, treeChildrenToSiblings(), treeFindSwitchForks(), treeNodesToQueue(), treeRemoveChild(), treeRemoveSibling(), treeSwitchPath(), TRUE, and SCIP_Stat::visual.

Referenced by freeReoptSolve(), freeSolve(), SCIPsolveCIP(), SCIPtreeCreatePresolvingRoot(), and SCIPtreeFreePresolvingRoot().

◆ SCIPtreeCreate()

SCIP_RETCODE SCIPtreeCreate ( SCIP_TREE **  tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_NODESEL nodesel 
)

creates an initialized tree data structure

Parameters
treepointer to tree data structure
blkmemblock memory buffers
setglobal SCIP settings
nodeselnode selector to use for sorting leaves in the priority queue

Definition at line 4766 of file tree.c.

References BMSallocBlockMemoryArray, BMSallocMemory, FALSE, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPnodepqCreate(), and TRUE.

Referenced by SCIPtransformProb().

◆ SCIPtreeFree()

SCIP_RETCODE SCIPtreeFree ( SCIP_TREE **  tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_LP lp 
)

frees tree data structure

Parameters
treepointer to tree data structure
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
lpcurrent LP data

Definition at line 4847 of file tree.c.

References BMSfreeBlockMemoryArray, BMSfreeMemory, BMSfreeMemoryArrayNull, NULL, SCIP_CALL, SCIP_OKAY, SCIPnodepqFree(), SCIPsetDebugMsg, and SCIPtreeProbing().

Referenced by freeTransform(), and freeTransforming().

◆ SCIPtreeClear()

◆ SCIPtreeCreateRoot()

SCIP_RETCODE SCIPtreeCreateRoot ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_LP lp 
)

creates the root node of the tree and puts it into the leaves queue

Parameters
treetree data structure
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
lpcurrent LP data

Definition at line 4957 of file tree.c.

References SCIP_Node::active, SCIP_Tree::children, SCIP_Node::cutoff, SCIP_Node::depth, SCIP_Tree::focusnode, MAXREPROPMARK, SCIP_Tree::nchildren, SCIP_Node::nodetype, SCIP_Tree::nsiblings, NULL, SCIP_Node::reprop, SCIP_Node::repropsubtreemark, SCIP_Tree::root, SCIP_CALL, SCIP_MAXTREEDEPTH, SCIP_NODETYPE_CHILD, SCIP_OKAY, SCIPnodeCreateChild(), SCIPsetInfinity(), SCIPtreeProbing(), and treeNodesToQueue().

Referenced by initSolve(), and SCIPtreeCreatePresolvingRoot().

◆ SCIPtreeCreatePresolvingRoot()

SCIP_RETCODE SCIPtreeCreatePresolvingRoot ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_CONFLICTSTORE conflictstore,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable 
)

creates a temporary presolving root node of the tree and installs it as focus node

Parameters
treetree data structure
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics
transprobtransformed problem
origproboriginal problem
primalprimal data
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
conflictstoreconflict store
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure

Definition at line 5003 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Tree::nchildren, SCIP_Tree::nsiblings, NULL, SCIP_Tree::root, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPnodeFocus(), SCIPtreeCreateRoot(), and SCIPtreeProbing().

Referenced by initPresolve().

◆ SCIPtreeFreePresolvingRoot()

SCIP_RETCODE SCIPtreeFreePresolvingRoot ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_PRIMAL primal,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_CONFLICT conflict,
SCIP_CONFLICTSTORE conflictstore,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_CLIQUETABLE cliquetable 
)

frees the temporary presolving root and resets tree data structure

Parameters
treetree data structure
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics
transprobtransformed problem
origproboriginal problem
primalprimal data
lpcurrent LP data
branchcandbranching candidate storage
conflictconflict analysis data
conflictstoreconflict store
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
cliquetableclique table data structure

Definition at line 5044 of file tree.c.

References FALSE, SCIP_Tree::focusnode, NULL, SCIP_Tree::pathlen, SCIP_Tree::root, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIPnodeFocus(), and SCIPtreeClear().

Referenced by exitPresolve().

◆ SCIPtreeGetNodesel()

SCIP_NODESEL* SCIPtreeGetNodesel ( SCIP_TREE tree)

returns the node selector associated with the given node priority queue

Parameters
treebranch and bound tree

Definition at line 5087 of file tree.c.

References SCIP_Tree::leaves, NULL, and SCIPnodepqGetNodesel().

◆ SCIPtreeSetNodesel()

SCIP_RETCODE SCIPtreeSetNodesel ( SCIP_TREE tree,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_NODESEL nodesel 
)

sets the node selector used for sorting the nodes in the priority queue, and resorts the queue if necessary

Parameters
treebranch and bound tree
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics
nodeselnode selector to use for sorting the nodes in the queue

Definition at line 5097 of file tree.c.

References SCIP_Tree::leaves, SCIP_Stat::nnodes, NULL, SCIP_CALL, SCIP_OKAY, SCIP_VERBLEVEL_FULL, SCIPmessagePrintVerbInfo(), SCIPnodepqGetNodesel(), SCIPnodepqSetNodesel(), and SCIPnodeselGetName().

Referenced by SCIPsolveCIP().

◆ SCIPtreeCutoff()

SCIP_RETCODE SCIPtreeCutoff ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_EVENTFILTER eventfilter,
SCIP_EVENTQUEUE eventqueue,
SCIP_LP lp,
SCIP_Real  cutoffbound 
)

cuts off nodes with lower bound not better than given cutoff bound

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory
setglobal SCIP settings
statdynamic problem statistics
eventfilterevent filter for global (not variable dependent) events
eventqueueevent queue
lpcurrent LP data
cutoffboundcutoff bound: all nodes with lowerbound >= cutoffbound are cut off

Definition at line 5125 of file tree.c.

References SCIP_Tree::children, SCIP_Tree::cutoffdelayed, SCIP_Tree::effectiverootdepth, FALSE, SCIP_Tree::focusnode, SCIP_Tree::leaves, SCIP_Node::lowerbound, SCIP_Tree::nchildren, SCIP_Tree::nsiblings, NULL, SCIP_Tree::root, SCIP_CALL, SCIP_EVENTTYPE_NODEINFEASIBLE, SCIP_OKAY, SCIPlpDiving(), SCIPlpGetSolstat(), SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetNumber(), SCIPnodepqBound(), SCIPreoptCheckCutoff(), SCIPsetDebugMsg, SCIPsetIsGE(), SCIPsetIsInfinity(), SCIPvisualCutoffNode(), SCIP_Tree::siblings, TRUE, and SCIP_Stat::visual.

Referenced by primalSetCutoffbound(), SCIPendDive(), SCIPpruneTree(), and SCIPsolveCIP().

◆ SCIPtreeCalcNodeselPriority()

SCIP_Real SCIPtreeCalcNodeselPriority ( SCIP_TREE tree,
SCIP_SET set,
SCIP_STAT stat,
SCIP_VAR var,
SCIP_BRANCHDIR  branchdir,
SCIP_Real  targetvalue 
)

calculates the node selection priority for moving the given variable's LP value to the given target value; this node selection priority can be given to the SCIPcreateChild() call

Parameters
treebranch and bound tree
setglobal SCIP settings
statdynamic problem statistics
varvariable, of which the branching factor should be applied, or NULL
branchdirtype of branching that was performed: upwards, downwards, or fixed fixed should only be used, when both bounds changed
targetvaluenew value of the variable in the child node

Definition at line 5211 of file tree.c.

References NULL, SCIP_Bool, SCIP_BRANCHDIR_AUTO, SCIP_BRANCHDIR_DOWNWARDS, SCIP_BRANCHDIR_FIXED, SCIP_BRANCHDIR_UPWARDS, SCIP_Real, SCIPerrorMessage, SCIPsetEpsilon(), SCIPsetInfinity(), SCIPtreeGetCurrentDepth(), SCIPtreeHasFocusNodeLP(), SCIPvarGetAvgInferences(), SCIPvarGetBranchDirection(), SCIPvarGetName(), SCIPvarGetPseudocost(), SCIPvarGetRootSol(), and SCIPvarGetSol().

Referenced by SCIPcalcNodeselPriority(), SCIPtreeBranchVar(), SCIPtreeBranchVarHole(), and SCIPtreeBranchVarNary().

◆ SCIPtreeCalcChildEstimate()

SCIP_Real SCIPtreeCalcChildEstimate ( SCIP_TREE tree,
SCIP_SET set,
SCIP_STAT stat,
SCIP_VAR var,
SCIP_Real  targetvalue 
)

calculates an estimate for the objective of the best feasible solution contained in the subtree after applying the given branching; this estimate can be given to the SCIPcreateChild() call

Parameters
treebranch and bound tree
setglobal SCIP settings
statdynamic problem statistics
varvariable, of which the branching factor should be applied, or NULL
targetvaluenew value of the variable in the child node

Definition at line 5361 of file tree.c.

References SCIP_Tree::focusnode, NULL, SCIP_Real, SCIP_VARTYPE_CONTINUOUS, SCIPnodeGetEstimate(), SCIPsetFeasCeil(), SCIPsetFeasFloor(), SCIPtreeHasFocusNodeLP(), SCIPvarGetPseudocost(), SCIPvarGetSol(), and SCIPvarGetType().

Referenced by SCIPcalcChildEstimate(), SCIPtreeBranchVar(), SCIPtreeBranchVarHole(), and SCIPtreeBranchVarNary().

◆ SCIPtreeBranchVar()

SCIP_RETCODE SCIPtreeBranchVar ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_VAR var,
SCIP_Real  val,
SCIP_NODE **  downchild,
SCIP_NODE **  eqchild,
SCIP_NODE **  upchild 
)

branches on a variable x if x is a continuous variable, then two child nodes will be created (x <= x', x >= x') but if the bounds of x are such that their relative difference is smaller than epsilon, the variable is fixed to val (if not SCIP_INVALID) or a well chosen alternative in the current node, i.e., no children are created if x is not a continuous variable, then: if solution value x' is fractional, two child nodes will be created (x <= floor(x'), x >= ceil(x')), if solution value is integral, the x' is equal to lower or upper bound of the branching variable and the bounds of x are finite, then two child nodes will be created (x <= x", x >= x"+1 with x" = floor((lb + ub)/2)), otherwise (up to) three child nodes will be created (x <= x'-1, x == x', x >= x'+1) if solution value is equal to one of the bounds and the other bound is infinite, only two child nodes will be created (the third one would be infeasible anyway)

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
varvariable to branch on
valvalue to branch on or SCIP_INVALID for branching on current LP/pseudo solution. A branching value is required for branching on continuous variables
downchildpointer to return the left child with variable rounded down, or NULL
eqchildpointer to return the middle child with variable fixed, or NULL
upchildpointer to return the right child with variable rounded up, or NULL

Definition at line 5420 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, MAX, NULL, SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_BRANCHDIR_DOWNWARDS, SCIP_BRANCHDIR_FIXED, SCIP_BRANCHDIR_UPWARDS, SCIP_CALL, SCIP_INVALID, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARTYPE_CONTINUOUS, SCIPABORT, SCIPerrorMessage, SCIPnodeAddBoundchg(), SCIPnodeCreateChild(), SCIPnodeGetEstimate(), SCIPnodeGetLowerbound(), SCIPrelDiff(), SCIPsetCeil(), SCIPsetDebugMsg, SCIPsetEpsilon(), SCIPsetFeasCeil(), SCIPsetFeasFloor(), SCIPsetIsEQ(), SCIPsetIsFeasEQ(), SCIPsetIsFeasGE(), SCIPsetIsFeasIntegral(), SCIPsetIsFeasLE(), SCIPsetIsGT(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPsetIsRelEQ(), SCIPtreeCalcChildEstimate(), SCIPtreeCalcNodeselPriority(), SCIPtreeGetCurrentNode(), SCIPvarGetBranchPriority(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetProbindex(), SCIPvarGetProbvar(), SCIPvarGetProbvarSum(), SCIPvarGetRootSol(), SCIPvarGetSol(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbLocal(), SCIPvarGetWorstBoundLocal(), SCIPvarIsActive(), SCIPvisualUpdateChild(), and SCIP_Stat::visual.

Referenced by SCIPbranchExecExtern(), SCIPbranchExecLP(), SCIPbranchExecPseudo(), SCIPbranchVar(), SCIPbranchVarVal(), and SCIPtreeBranchVarNary().

◆ SCIPtreeBranchVarHole()

SCIP_RETCODE SCIPtreeBranchVarHole ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_VAR var,
SCIP_Real  left,
SCIP_Real  right,
SCIP_NODE **  downchild,
SCIP_NODE **  upchild 
)

branches a variable x using the given domain hole; two child nodes will be created (x <= left, x >= right)

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
varvariable to branch on
leftleft side of the domain hole
rightright side of the domain hole
downchildpointer to return the left child with variable rounded down, or NULL
upchildpointer to return the right child with variable rounded up, or NULL

Definition at line 5751 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, NULL, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_BRANCHDIR_DOWNWARDS, SCIP_BRANCHDIR_UPWARDS, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARTYPE_CONTINUOUS, SCIPABORT, SCIPerrorMessage, SCIPnodeAddBoundchg(), SCIPnodeCreateChild(), SCIPnodeGetEstimate(), SCIPsetDebugMsg, SCIPsetFeasCeil(), SCIPsetFeasFloor(), SCIPsetIsFeasGE(), SCIPsetIsFeasIntegral(), SCIPsetIsFeasLE(), SCIPsetIsGE(), SCIPsetIsGT(), SCIPsetIsLE(), SCIPsetIsLT(), SCIPtreeCalcChildEstimate(), SCIPtreeCalcNodeselPriority(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetProbindex(), SCIPvarGetProbvarHole(), SCIPvarGetSol(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbLocal(), SCIPvarIsActive(), SCIPvarIsIntegral(), SCIPvisualUpdateChild(), and SCIP_Stat::visual.

Referenced by SCIPbranchVarHole().

◆ SCIPtreeBranchVarNary()

SCIP_RETCODE SCIPtreeBranchVarNary ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_VAR var,
SCIP_Real  val,
int  n,
SCIP_Real  minwidth,
SCIP_Real  widthfactor,
int *  nchildren 
)

n-ary branching on a variable x Branches on variable x such that up to n/2 children are created on each side of the usual branching value. The branching value is selected as in SCIPtreeBranchVar(). If n is 2 or the variables local domain is too small for a branching into n pieces, SCIPtreeBranchVar() is called. The parameters minwidth and widthfactor determine the domain width of the branching variable in the child nodes. If n is odd, one child with domain width 'width' and having the branching value in the middle is created. Otherwise, two children with domain width 'width' and being left and right of the branching value are created. Next further nodes to the left and right are created, where width is multiplied by widthfactor with increasing distance from the first nodes. The initial width is calculated such that n/2 nodes are created to the left and to the right of the branching value. If this value is below minwidth, the initial width is set to minwidth, which may result in creating less than n nodes.

Giving a large value for widthfactor results in creating children with small domain when close to the branching value and large domain when closer to the current variable bounds. That is, setting widthfactor to a very large value and n to 3 results in a ternary branching where the branching variable is mostly fixed in the middle child. Setting widthfactor to 1.0 results in children where the branching variable always has the same domain width (except for one child if the branching value is not in the middle).

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory
setglobal SCIP settings
statproblem statistics data
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
branchcandbranching candidate storage
eventqueueevent queue
varvariable to branch on
valvalue to branch on or SCIP_INVALID for branching on current LP/pseudo solution. A branching value is required for branching on continuous variables
nattempted number of children to be created, must be >= 2
minwidthminimal domain width in children
widthfactormultiplier for children domain width with increasing distance from val, must be >= 1.0
nchildrenbuffer to store number of created children, or NULL

Definition at line 5893 of file tree.c.

References FALSE, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, MAX, NULL, SCIP_Bool, SCIP_BOUNDTYPE_LOWER, SCIP_BOUNDTYPE_UPPER, SCIP_BRANCHDIR_DOWNWARDS, SCIP_BRANCHDIR_FIXED, SCIP_BRANCHDIR_UPWARDS, SCIP_CALL, SCIP_INVALID, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_Real, SCIP_REAL_MAX, SCIP_VARSTATUS_COLUMN, SCIP_VARSTATUS_FIXED, SCIP_VARSTATUS_LOOSE, SCIP_VARSTATUS_MULTAGGR, SCIP_VARTYPE_CONTINUOUS, SCIPABORT, SCIPerrorMessage, SCIPnodeAddBoundchg(), SCIPnodeCreateChild(), SCIPnodeGetEstimate(), SCIPrelDiff(), SCIPsetCeil(), SCIPsetDebugMsg, SCIPsetEpsilon(), SCIPsetFloor(), SCIPsetIsFeasGE(), SCIPsetIsFeasIntegral(), SCIPsetIsFeasLE(), SCIPsetIsGT(), SCIPsetIsInfinity(), SCIPsetIsLT(), SCIPsetIsPositive(), SCIPsetIsRelEQ(), SCIPsetIsRelGT(), SCIPsetIsRelLT(), SCIPsetIsZero(), SCIPtreeBranchVar(), SCIPtreeCalcChildEstimate(), SCIPtreeCalcNodeselPriority(), SCIPvarAdjustLb(), SCIPvarAdjustUb(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetProbindex(), SCIPvarGetProbvar(), SCIPvarGetProbvarSum(), SCIPvarGetSol(), SCIPvarGetStatus(), SCIPvarGetType(), SCIPvarGetUbLocal(), SCIPvarGetWorstBoundLocal(), SCIPvarIsActive(), SCIPvisualUpdateChild(), and SCIP_Stat::visual.

Referenced by SCIPbranchVarValNary().

◆ SCIPtreeAddDiveBoundChange()

SCIP_RETCODE SCIPtreeAddDiveBoundChange ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_VAR var,
SCIP_BRANCHDIR  dir,
SCIP_Real  value,
SCIP_Bool  preferred 
)

adds a diving bound change to the tree together with the information if this is a bound change for the preferred direction or not

Parameters
treebranch and bound tree
blkmemblock memory buffers
varvariable to apply the bound change to
dirdirection of the bound change
valuevalue to adjust this variable bound to
preferredis this a bound change for the preferred child?

Definition at line 6264 of file tree.c.

References ARRAYGROWTH, BMSreallocBlockMemoryArray, SCIP_Tree::divebdchgdirs, SCIP_Tree::divebdchgsize, SCIP_Tree::divebdchgvals, SCIP_Tree::divebdchgvars, SCIP_Tree::ndivebdchanges, SCIP_ALLOC, and SCIP_OKAY.

Referenced by SCIPaddDiveBoundChange().

◆ SCIPtreeGetDiveBoundChangeData()

void SCIPtreeGetDiveBoundChangeData ( SCIP_TREE tree,
SCIP_VAR ***  variables,
SCIP_BRANCHDIR **  directions,
SCIP_Real **  values,
int *  ndivebdchgs,
SCIP_Bool  preferred 
)

get the dive bound change data for the preferred or the alternative direction

Parameters
treebranch and bound tree
variablespointer to store variables for the specified direction
directionspointer to store the branching directions
valuespointer to store bound change values
ndivebdchgspointer to store the number of dive bound changes
preferredshould the dive bound changes for the preferred child be output?

Definition at line 6296 of file tree.c.

References SCIP_Tree::divebdchgdirs, SCIP_Tree::divebdchgvals, SCIP_Tree::divebdchgvars, SCIP_Tree::ndivebdchanges, and NULL.

Referenced by SCIPgetDiveBoundChangeData(), and SCIPgetDiveBoundChanges().

◆ SCIPtreeClearDiveBoundChanges()

void SCIPtreeClearDiveBoundChanges ( SCIP_TREE tree)

clear the tree bound change data structure

Parameters
treebranch and bound tree

Definition at line 6319 of file tree.c.

References SCIP_Tree::ndivebdchanges.

Referenced by SCIPclearDiveBoundChanges().

◆ treeCreateProbingNode()

static SCIP_RETCODE treeCreateProbingNode ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_LP lp 
)
static

◆ SCIPtreeStartProbing()

SCIP_RETCODE SCIPtreeStartProbing ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_LP lp,
SCIP_RELAXATION relaxation,
SCIP_PROB transprob,
SCIP_Bool  strongbranching 
)

◆ SCIPtreeCreateProbingNode()

SCIP_RETCODE SCIPtreeCreateProbingNode ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_LP lp 
)

creates a new probing child node in the probing path

Parameters
treebranch and bound tree
blkmemblock memory
setglobal SCIP settings
lpcurrent LP data

Definition at line 6489 of file tree.c.

References SCIP_Tree::pathlen, SCIP_Tree::probingroot, SCIP_CALL, SCIP_OKAY, SCIPnodeGetDepth(), SCIPsetDebugMsg, SCIPtreeProbing(), and treeCreateProbingNode().

Referenced by SCIPnewProbingNode().

◆ SCIPtreeSetProbingLPState()

SCIP_RETCODE SCIPtreeSetProbingLPState ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_LP lp,
SCIP_LPISTATE **  lpistate,
SCIP_LPINORMS **  lpinorms,
SCIP_Bool  primalfeas,
SCIP_Bool  dualfeas 
)

sets the LP state for the current probing node

Note
state and norms are stored at the node and later released by SCIP; therefore, the pointers are set to NULL by the method
the pointers to state and norms must not be NULL; however, they may point to a NULL pointer if the respective information should not be set
Parameters
treebranch and bound tree
blkmemblock memory
lpcurrent LP data
lpistatepointer to LP state information (like basis information)
lpinormspointer to LP pricing norms information
primalfeasprimal feasibility when LP state information was stored
dualfeasdual feasibility when LP state information was stored

Definition at line 6514 of file tree.c.

References SCIP_Node::data, SCIP_Probingnode::lpinorms, SCIP_Probingnode::lpistate, SCIP_Probingnode::lpwasdualfeas, SCIP_Probingnode::lpwasprimfeas, NULL, SCIP_Tree::probingloadlpistate, SCIP_Node::probingnode, SCIP_CALL, SCIP_INVALIDDATA, SCIP_NODETYPE_PROBINGNODE, SCIP_OKAY, SCIPlpFreeNorms(), SCIPlpFreeState(), SCIPnodeGetType(), SCIPtreeGetCurrentNode(), SCIPtreeProbing(), and TRUE.

Referenced by SCIPsetProbingLPState().

◆ SCIPtreeLoadProbingLPState()

◆ SCIPtreeMarkProbingNodeHasLP()

SCIP_RETCODE SCIPtreeMarkProbingNodeHasLP ( SCIP_TREE tree,
BMS_BLKMEM blkmem,
SCIP_LP lp 
)

marks the probing node to have a solved LP relaxation

Parameters
treebranch and bound tree
blkmemblock memory
lpcurrent LP data

Definition at line 6649 of file tree.c.

References SCIP_Node::data, NULL, SCIP_Node::probingnode, SCIP_Tree::probingnodehaslp, probingnodeUpdate(), SCIP_CALL, SCIP_NODETYPE_PROBINGNODE, SCIP_OKAY, SCIPnodeGetType(), SCIPtreeGetCurrentNode(), SCIPtreeProbing(), and TRUE.

Referenced by solveProbingLP().

◆ treeBacktrackProbing()

static SCIP_RETCODE treeBacktrackProbing ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_PRIMAL primal,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_CLIQUETABLE cliquetable,
int  probingdepth 
)
static

undoes all changes to the problem applied in probing up to the given probing depth

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
primalprimal data structure
branchcandbranching candidate storage
eventqueueevent queue
eventfilterglobal event filter
cliquetableclique table data structure
probingdepthprobing depth of the node in the probing path that should be reactivated, -1 to even deactivate the probing root, thus exiting probing mode

Definition at line 6677 of file tree.c.

References SCIP_Primal::cutoffbound, SCIP_Tree::cutoffdepth, SCIP_Node::data, FALSE, SCIP_Tree::focuslpconstructed, SCIP_Tree::focusnode, SCIP_Probingnode::nchgdobjs, SCIP_Lp::ncols, SCIP_Probingnode::ninitialcols, SCIP_Probingnode::ninitialrows, nodeDeactivate(), SCIP_Lp::nrows, NULL, SCIP_Probingnode::origobjvals, SCIP_Probingnode::origobjvars, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Tree::pathnlpcols, SCIP_Tree::pathnlprows, SCIP_Tree::probingloadlpistate, SCIP_Node::probingnode, SCIP_Tree::probingobjchanged, SCIP_Tree::probingroot, SCIP_Tree::probingsumchgdobjs, SCIP_Tree::repropdepth, SCIP_CALL, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIPlpGetNCols(), SCIPlpGetNRows(), SCIPlpRecomputeLocalAndGlobalPseudoObjval(), SCIPlpSetCutoffbound(), SCIPlpSetSizeMark(), SCIPlpShrinkCols(), SCIPlpShrinkRows(), SCIPlpUnmarkDivingObjChanged(), SCIPnodeFree(), SCIPnodeGetDepth(), SCIPnodeGetType(), SCIPsetDebugMsg, SCIPtreeGetProbingDepth(), SCIPtreeProbing(), SCIPvarChgObj(), treeApplyPendingBdchgs(), treeCheckPath(), and TRUE.

Referenced by SCIPtreeBacktrackProbing(), and SCIPtreeEndProbing().

◆ SCIPtreeBacktrackProbing()

SCIP_RETCODE SCIPtreeBacktrackProbing ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_PRIMAL primal,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_CLIQUETABLE cliquetable,
int  probingdepth 
)

undoes all changes to the problem applied in probing up to the given probing depth; the changes of the probing node of the given probing depth are the last ones that remain active; changes that were applied before calling SCIPtreeCreateProbingNode() cannot be undone

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
statproblem statistics
transprobtransformed problem
origproboriginal problem
lpcurrent LP data
primalprimal data structure
branchcandbranching candidate storage
eventqueueevent queue
eventfilterglobal event filter
cliquetableclique table data structure
probingdepthprobing depth of the node in the probing path that should be reactivated

Definition at line 6823 of file tree.c.

References NULL, SCIP_CALL, SCIP_NODETYPE_PROBINGNODE, SCIP_OKAY, SCIPnodeGetType(), SCIPtreeGetCurrentNode(), SCIPtreeGetProbingDepth(), SCIPtreeProbing(), and treeBacktrackProbing().

Referenced by SCIPbacktrackProbing().

◆ SCIPtreeEndProbing()

SCIP_RETCODE SCIPtreeEndProbing ( SCIP_TREE tree,
SCIP_REOPT reopt,
BMS_BLKMEM blkmem,
SCIP_SET set,
SCIP_MESSAGEHDLR messagehdlr,
SCIP_STAT stat,
SCIP_PROB transprob,
SCIP_PROB origprob,
SCIP_LP lp,
SCIP_RELAXATION relaxation,
SCIP_PRIMAL primal,
SCIP_BRANCHCAND branchcand,
SCIP_EVENTQUEUE eventqueue,
SCIP_EVENTFILTER eventfilter,
SCIP_CLIQUETABLE cliquetable 
)

switches back from probing to normal operation mode, frees all nodes on the probing path, restores bounds of all variables and restores active constraints arrays of focus node

Parameters
treebranch and bound tree
reoptreoptimization data structure
blkmemblock memory buffers
setglobal SCIP settings
messagehdlrmessage handler
statproblem statistics
transprobtransformed problem after presolve
origproboriginal problem
lpcurrent LP data
relaxationglobal relaxation data
primalPrimal LP data
branchcandbranching candidate storage
eventqueueevent queue
eventfilterglobal event filter
cliquetableclique table data structure

Definition at line 6857 of file tree.c.

References SCIP_Primal::cutoffbound, SCIP_Lp::cutoffbound, SCIP_Lp::divingobjchg, SCIP_Lp::dualchecked, SCIP_Lp::dualfeasible, FALSE, SCIP_Lp::flushed, SCIP_Tree::focuslpconstructed, SCIP_Tree::focusnode, SCIP_Tree::focusnodehaslp, SCIP_Lp::lpi, SCIP_Lp::lpsolstat, SCIP_Lp::nlpicols, SCIP_Lp::nlpirows, SCIP_Stat::nlps, SCIP_Stat::nnodes, NULL, SCIP_Node::parent, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Lp::primalchecked, SCIP_Lp::primalfeasible, SCIP_Tree::probdiverelaxstored, SCIP_Tree::probingloadlpistate, SCIP_Tree::probinglpinorms, SCIP_Tree::probinglpistate, SCIP_Tree::probinglpwasdualchecked, SCIP_Tree::probinglpwasdualfeas, SCIP_Tree::probinglpwasflushed, SCIP_Tree::probinglpwasprimchecked, SCIP_Tree::probinglpwasprimfeas, SCIP_Tree::probinglpwasrelax, SCIP_Tree::probinglpwassolved, SCIP_Tree::probingobjchanged, SCIP_Tree::probingroot, SCIP_Tree::probingsolvedlp, SCIP_Tree::probingsumchgdobjs, SCIP_Lp::resolvelperror, SCIP_Tree::sbprobing, SCIP_Bool, SCIP_CALL, SCIP_LPSOLSTAT_INFEASIBLE, SCIP_LPSOLSTAT_NOTSOLVED, SCIP_LPSOLSTAT_OBJLIMIT, SCIP_LPSOLSTAT_OPTIMAL, SCIP_LPSOLSTAT_UNBOUNDEDRAY, SCIP_NODETYPE_FOCUSNODE, SCIP_NODETYPE_PROBINGNODE, SCIP_NODETYPE_REFOCUSNODE, SCIP_OKAY, SCIP_VERBLEVEL_FULL, SCIPconshdlrsResetPropagationStatus(), SCIPlpDivingObjChanged(), SCIPlpEndProbing(), SCIPlpFlush(), SCIPlpFreeNorms(), SCIPlpFreeState(), SCIPlpGetSolstat(), SCIPlpiClearState(), SCIPlpIsRelax(), SCIPlpSetIsRelax(), SCIPlpSetNorms(), SCIPlpSetState(), SCIPlpSolveAndEval(), SCIPmessagePrintVerbInfo(), SCIPnodeGetDepth(), SCIPnodeGetType(), SCIPnodeUpdateLowerboundLP(), SCIPprobAllColsInLP(), SCIPsetDebugMsg, SCIPtreeGetCurrentNode(), SCIPtreeProbing(), SCIPtreeRestoreRelaxSol(), SCIP_Lp::solisbasic, SCIP_Lp::solved, treeBacktrackProbing(), and TRUE.

Referenced by SCIPendProbing(), and SCIPendStrongbranch().

◆ SCIPtreeStoreRelaxSol()

SCIP_RETCODE SCIPtreeStoreRelaxSol ( SCIP_TREE tree,
SCIP_SET set,
SCIP_RELAXATION relaxation,
SCIP_PROB transprob 
)

stores relaxation solution before diving or probing

Parameters
treebranch and bound tree
setglobal SCIP settings
relaxationglobal relaxation data
transprobtransformed problem after presolve

Definition at line 7018 of file tree.c.

References BMSallocMemoryArray, BMSreallocMemoryArray, SCIP_Tree::nprobdiverelaxsol, NULL, SCIP_Prob::nvars, SCIP_Tree::probdiverelaxincludeslp, SCIP_Tree::probdiverelaxsol, SCIP_Tree::probdiverelaxstored, SCIP_ALLOC, SCIP_OKAY, SCIPrelaxationIsLpIncludedForSol(), SCIPrelaxationIsSolValid(), SCIPvarGetRelaxSol(), TRUE, and SCIP_Prob::vars.

Referenced by SCIPstartDive(), and SCIPtreeStartProbing().

◆ SCIPtreeRestoreRelaxSol()

SCIP_RETCODE SCIPtreeRestoreRelaxSol ( SCIP_TREE tree,
SCIP_SET set,
SCIP_RELAXATION relaxation,
SCIP_PROB transprob 
)

restores relaxation solution after diving or probing

Parameters
treebranch and bound tree
setglobal SCIP settings
relaxationglobal relaxation data
transprobtransformed problem after presolve

Definition at line 7062 of file tree.c.

References FALSE, NULL, SCIP_Prob::nvars, SCIP_Tree::probdiverelaxincludeslp, SCIP_Tree::probdiverelaxsol, SCIP_Tree::probdiverelaxstored, SCIP_CALL, SCIP_OKAY, SCIPrelaxationSetSolValid(), SCIPvarSetRelaxSol(), TRUE, and SCIP_Prob::vars.

Referenced by SCIPendDive(), and SCIPtreeEndProbing().

◆ SCIPtreeGetPrioChild()

SCIP_NODE* SCIPtreeGetPrioChild ( SCIP_TREE tree)

gets the best child of the focus node w.r.t. the node selection priority assigned by the branching rule

Parameters
treebranch and bound tree

Definition at line 7095 of file tree.c.

References SCIP_Tree::children, SCIP_Tree::childrenprio, SCIP_Tree::nchildren, NULL, SCIP_Real, and SCIP_REAL_MIN.

Referenced by SCIPgetPrioChild().

◆ SCIPtreeGetPrioSibling()

SCIP_NODE* SCIPtreeGetPrioSibling ( SCIP_TREE tree)

gets the best sibling of the focus node w.r.t. the node selection priority assigned by the branching rule

Parameters
treebranch and bound tree

Definition at line 7121 of file tree.c.

References SCIP_Tree::nsiblings, NULL, SCIP_Real, SCIP_REAL_MIN, SCIP_Tree::siblings, and SCIP_Tree::siblingsprio.

Referenced by SCIPgetPrioSibling().

◆ SCIPtreeGetBestChild()

SCIP_NODE* SCIPtreeGetBestChild ( SCIP_TREE tree,
SCIP_SET set 
)

gets the best child of the focus node w.r.t. the node selection strategy

Parameters
treebranch and bound tree
setglobal SCIP settings

Definition at line 7147 of file tree.c.

References SCIP_Tree::children, SCIP_Tree::leaves, SCIP_Tree::nchildren, NULL, SCIPnodepqGetNodesel(), and SCIPnodeselCompare().

Referenced by SCIPgetBestChild(), and SCIPtreeGetBestNode().

◆ SCIPtreeGetBestSibling()

SCIP_NODE* SCIPtreeGetBestSibling ( SCIP_TREE tree,
SCIP_SET set 
)

gets the best sibling of the focus node w.r.t. the node selection strategy

Parameters
treebranch and bound tree
setglobal SCIP settings

Definition at line 7174 of file tree.c.

References SCIP_Tree::leaves, SCIP_Tree::nsiblings, NULL, SCIPnodepqGetNodesel(), SCIPnodeselCompare(), and SCIP_Tree::siblings.

Referenced by SCIPgetBestSibling(), and SCIPtreeGetBestNode().

◆ SCIPtreeGetBestLeaf()

SCIP_NODE* SCIPtreeGetBestLeaf ( SCIP_TREE tree)

gets the best leaf from the node queue w.r.t. the node selection strategy

Parameters
treebranch and bound tree

Definition at line 7201 of file tree.c.

References SCIP_Tree::leaves, NULL, and SCIPnodepqFirst().

Referenced by SCIPgetBestLeaf(), SCIPnodeFocus(), and SCIPtreeGetBestNode().

◆ SCIPtreeGetBestNode()

SCIP_NODE* SCIPtreeGetBestNode ( SCIP_TREE tree,
SCIP_SET set 
)

gets the best node from the tree (child, sibling, or leaf) w.r.t. the node selection strategy

Parameters
treebranch and bound tree
setglobal SCIP settings

Definition at line 7211 of file tree.c.

References SCIP_Tree::leaves, NULL, SCIPnodepqGetNodesel(), SCIPnodeselCompare(), SCIPtreeGetBestChild(), SCIPtreeGetBestLeaf(), SCIPtreeGetBestSibling(), and SCIPtreeGetNLeaves().

Referenced by SCIPgetBestNode().

◆ SCIPtreeGetLowerbound()

SCIP_Real SCIPtreeGetLowerbound ( SCIP_TREE tree,
SCIP_SET set 
)

◆ SCIPtreeGetLowerboundNode()

SCIP_NODE* SCIPtreeGetLowerboundNode ( SCIP_TREE tree,
SCIP_SET set 
)

gets the node with minimal lower bound of all nodes in the tree (child, sibling, or leaf)

Parameters
treebranch and bound tree
setglobal SCIP settings

Definition at line 7283 of file tree.c.

References SCIP_Tree::children, SCIP_Tree::childrenprio, SCIP_Tree::leaves, SCIP_Node::lowerbound, SCIP_Tree::nchildren, SCIP_Tree::nsiblings, NULL, SCIP_Real, SCIPnodepqGetLowerboundNode(), SCIPsetInfinity(), SCIPsetIsLE(), SCIPsetIsLT(), SCIP_Tree::siblings, and SCIP_Tree::siblingsprio.

Referenced by SCIPgetBestboundNode().

◆ SCIPtreeGetAvgLowerbound()

SCIP_Real SCIPtreeGetAvgLowerbound ( SCIP_TREE tree,
SCIP_Real  cutoffbound 
)

gets the average lower bound of all nodes in the tree

Parameters
treebranch and bound tree
cutoffboundglobal cutoff bound

Definition at line 7335 of file tree.c.

References SCIP_Tree::children, SCIP_Tree::focusnode, SCIP_Tree::leaves, SCIP_Node::lowerbound, SCIP_Tree::nchildren, nnodes, SCIP_Tree::nsiblings, NULL, SCIP_Real, SCIPnodepqGetLowerboundSum(), SCIPtreeGetNLeaves(), and SCIP_Tree::siblings.

Referenced by SCIPgetAvgDualbound(), and SCIPgetAvgLowerbound().

◆ SCIPnodeGetNDualBndchgs()

int SCIPnodeGetNDualBndchgs ( SCIP_NODE node)

returns the number of bound changes based on dual information.

currently, this methods works only for bound changes made by strong branching on binary variables. we need this method to ensure optimality within reoptimization.

since the bound changes made by strong branching are stored as SCIP_BOUNDCHGTYPE_CONSINFER or SCIP_BOUNDCHGTYPE_PROPINFER with no constraint or propagator, resp., we are are interested in bound changes with these attributes.

all bound changes of type SCIP_BOUNDCHGTYPE_BRANCHING are stored in the beginning of the bound change array, afterwards, we can find the other two types. thus, we start the search at the end of the list and stop when reaching the first bound change of type SCIP_BOUNDCHGTYPE_BRANCHING.

Parameters
nodenode

Definition at line 7589 of file tree.c.

References SCIP_DomChgBound::boundchgs, SCIP_BoundChg::boundchgtype, SCIP_BoundChg::data, SCIP_Node::domchg, SCIP_DomChg::domchgbound, SCIP_BoundChg::inferencedata, SCIP_DomChgBound::nboundchgs, NULL, SCIP_Bool, SCIP_BOUNDCHGTYPE_BRANCHING, SCIP_BOUNDCHGTYPE_CONSINFER, SCIP_BOUNDCHGTYPE_PROPINFER, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_IMPLINT, SCIP_VARTYPE_INTEGER, SCIP_BoundChg::var, and SCIP_Var::vartype.

Referenced by collectDualInformation(), and SCIPreoptCheckCutoff().

◆ SCIPnodeGetDualBoundchgs()

void SCIPnodeGetDualBoundchgs ( SCIP_NODE node,
SCIP_VAR **  vars,
SCIP_Real bounds,
SCIP_BOUNDTYPE boundtypes,
int *  nvars,
int  varssize 
)

returns the set of variable branchings that were performed in the parent node to create this node

Parameters
nodenode data
varsarray of variables on which the bound change is based on dual information
boundsarray of bounds which are based on dual information
boundtypesarray of boundtypes which are based on dual information
nvarsnumber of variables on which the bound change is based on dual information if this is larger than the array size, arrays should be reallocated and method should be called again
varssizeavailable slots in arrays

Definition at line 7634 of file tree.c.

References SCIP_DomChgBound::boundchgs, SCIP_BoundChg::boundchgtype, SCIP_BoundChg::data, SCIP_Node::domchg, SCIP_DomChg::domchgbound, SCIP_BoundChg::inferencedata, SCIP_DomChgBound::nboundchgs, SCIP_BoundChg::newbound, NULL, SCIP_BOUNDCHGTYPE_BRANCHING, SCIP_BOUNDCHGTYPE_CONSINFER, SCIP_BOUNDCHGTYPE_PROPINFER, SCIP_VARTYPE_BINARY, SCIP_VARTYPE_IMPLINT, SCIP_VARTYPE_INTEGER, SCIPnodeGetDepth(), SCIP_BoundChg::var, and SCIP_Var::vartype.

Referenced by collectDualInformation().

◆ SCIPnodeGetConsProps()

void SCIPnodeGetConsProps ( SCIP_NODE node,
SCIP_VAR **  vars,
SCIP_Real varbounds,
SCIP_BOUNDTYPE varboundtypes,
int *  nconspropvars,
int  conspropvarssize 
)

return all bound changes based on constraint propagation; stop saving the bound changes if we reach a branching decision based on a dual information

Parameters
nodenode
varsarray of variables on which constraint propagation triggers a bound change
varboundsarray of bounds set by constraint propagation
varboundtypesarray of boundtypes set by constraint propagation
nconspropvarsnumber of variables on which constraint propagation triggers a bound change if this is larger than the array size, arrays should be reallocated and method should be called again
conspropvarssizeavailable slots in arrays

Definition at line 7864 of file tree.c.

References SCIP_DomChgBound::boundchgs, SCIP_BoundChg::boundchgtype, SCIP_BoundChg::data, SCIP_Node::domchg, SCIP_DomChg::domchgbound, SCIP_BoundChg::inferencedata, SCIP_DomChgBound::nboundchgs, SCIP_BoundChg::newbound, NULL, SCIP_BOUNDCHGTYPE_BRANCHING, SCIP_BOUNDCHGTYPE_CONSINFER, SCIP_BOUNDCHGTYPE_PROPINFER, SCIP_VARTYPE_CONTINUOUS, SCIPnodeGetDepth(), SCIPnodeGetNDomchg(), and SCIP_BoundChg::var.

Referenced by updateConstraintPropagation().

◆ SCIPnodeGetBdChgsAfterDual()

void SCIPnodeGetBdChgsAfterDual ( SCIP_NODE node,
SCIP_VAR **  vars,
SCIP_Real varbounds,
SCIP_BOUNDTYPE varboundtypes,
int  start,
int *  nbranchvars,
int  branchvarssize 
)

gets all bound changes applied after the first bound change based on dual information.

Note
: currently, we can only detect bound changes based in dual information if they arise from strong branching.
Parameters
nodenode
varsarray of variables on which the branching has been performed in the parent node
varboundsarray of bounds which the branching in the parent node set
varboundtypesarray of boundtypes which the branching in the parent node set
startfirst free slot in the arrays
nbranchvarsnumber of variables on which branching has been performed in the parent node if this is larger than the array size, arrays should be reallocated and method should be called again
branchvarssizeavailable slots in arrays

Definition at line 7952 of file tree.c.

References SCIP_DomChgBound::boundchgs, SCIP_BoundChg::boundchgtype, SCIP_BoundChg::data, SCIP_Node::domchg, SCIP_DomChg::domchgbound, SCIP_BoundChg::inferencedata, SCIP_DomChgBound::nboundchgs, SCIP_BoundChg::newbound, NULL, SCIP_BOUNDCHGTYPE_BRANCHING, SCIP_BOUNDCHGTYPE_CONSINFER, SCIP_BOUNDCHGTYPE_PROPINFER, SCIP_VARTYPE_CONTINUOUS, SCIPnodeGetDepth(), and SCIP_BoundChg::var.

Referenced by saveAfterDualBranchings().

◆ SCIPtreeGetNChildren()

int SCIPtreeGetNChildren ( SCIP_TREE tree)

gets number of children of the focus node

Parameters
treebranch and bound tree

Definition at line 8217 of file tree.c.

References SCIP_Tree::nchildren, and NULL.

Referenced by SCIPgetOpenNodesData().

◆ SCIPtreeGetNSiblings()

int SCIPtreeGetNSiblings ( SCIP_TREE tree)

gets number of siblings of the focus node

Parameters
treebranch and bound tree

Definition at line 8227 of file tree.c.

References SCIP_Tree::nsiblings, and NULL.

Referenced by SCIPgetOpenNodesData().

◆ SCIPtreeGetNLeaves()

int SCIPtreeGetNLeaves ( SCIP_TREE tree)

gets number of leaves in the tree (excluding children and siblings of focus nodes)

Parameters
treebranch and bound tree

Definition at line 8237 of file tree.c.

References SCIP_Tree::leaves, NULL, and SCIPnodepqLen().

Referenced by SCIPsolveCIP(), SCIPtreeGetAvgLowerbound(), SCIPtreeGetBestNode(), and SCIPtreeGetNNodes().

◆ SCIPtreeGetNNodes()

int SCIPtreeGetNNodes ( SCIP_TREE tree)

gets number of open nodes in the tree (children + siblings + leaves)

Parameters
treebranch and bound tree

Definition at line 8247 of file tree.c.

References SCIP_Tree::nchildren, SCIP_Tree::nsiblings, NULL, and SCIPtreeGetNLeaves().

Referenced by SCIPgetNNodesLeft(), SCIPprimalHeuristics(), SCIPprintTreeStatistics(), SCIPsolve(), SCIPsolveCIP(), and solveNode().

◆ SCIPtreeIsPathComplete()

SCIP_Bool SCIPtreeIsPathComplete ( SCIP_TREE tree)

returns whether the active path goes completely down to the focus node

Parameters
treebranch and bound tree

Definition at line 8257 of file tree.c.

References SCIP_Node::depth, SCIP_Tree::focusnode, NULL, SCIP_Tree::path, SCIP_Tree::pathlen, and SCIPtreeProbing().

Referenced by forkCreate(), forkFree(), junctionInit(), nodeAssignParent(), probingnodeUpdate(), pseudoforkCreate(), SCIPnodeCreateChild(), SCIPnodeFocus(), SCIPtreeHasCurrentNodeLP(), and treeCreateProbingNode().

◆ SCIPtreeProbing()

SCIP_Bool SCIPtreeProbing ( SCIP_TREE tree)

returns whether the current node is a temporary probing node

Parameters
treebranch and bound tree

Definition at line 8274 of file tree.c.

References SCIP_Node::nodetype, NULL, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Tree::probingroot, SCIP_NODETYPE_PROBINGNODE, and SCIPnodeGetDepth().

Referenced by focusnodeCleanupVars(), focusnodeToDeadend(), focusnodeToFork(), focusnodeToJunction(), focusnodeToLeaf(), focusnodeToPseudofork(), nodeActivate(), nodeDeactivate(), nodeReleaseParent(), propAndSolve(), SCIPaddRowProbing(), SCIPaggregateVars(), SCIPapplyCutsProbing(), SCIPbacktrackProbing(), SCIPchgVarLbProbing(), SCIPchgVarObjProbing(), SCIPchgVarUbProbing(), SCIPconshdlrInitLP(), SCIPendProbing(), SCIPendStrongbranch(), SCIPfixVarProbing(), SCIPgetProbingDepth(), SCIPgetVarObjProbing(), SCIPgetVarStrongbranchFrac(), SCIPinProbing(), SCIPmultiaggregateVar(), SCIPnewProbingNode(), SCIPnodeFocus(), SCIPnodeFree(), SCIPpriceLoop(), SCIPprimalHeuristics(), SCIPpropagateProbing(), SCIPpropagateProbingImplications(), SCIPsetProbingLPState(), SCIPsolLinkLPSol(), SCIPsolveProbingRelax(), SCIPstartDive(), SCIPstartProbing(), SCIPstartStrongbranch(), SCIPtreeBacktrackProbing(), SCIPtreeClear(), SCIPtreeCreatePresolvingRoot(), SCIPtreeCreateProbingNode(), SCIPtreeCreateRoot(), SCIPtreeEndProbing(), SCIPtreeFree(), SCIPtreeGetCurrentDepth(), SCIPtreeGetCurrentNode(), SCIPtreeGetFocusDepth(), SCIPtreeGetFocusNode(), SCIPtreeGetProbingDepth(), SCIPtreeHasCurrentNodeLP(), SCIPtreeIsPathComplete(), SCIPtreeLoadLP(), SCIPtreeLoadLPState(), SCIPtreeLoadProbingLPState(), SCIPtreeMarkProbingNodeHasLP(), SCIPtreeMarkProbingObjChanged(), SCIPtreeProbingObjChanged(), SCIPtreeSetProbingLPState(), SCIPtreeStartProbing(), SCIPupdateVarPseudocost(), solveProbingLP(), treeBacktrackProbing(), treeCheckPath(), treeCreateProbingNode(), and treeUpdatePathLPSize().

◆ SCIPtreeGetProbingRoot()

SCIP_NODE* SCIPtreeGetProbingRoot ( SCIP_TREE tree)

returns the temporary probing root node, or NULL if the we are not in probing mode

Parameters
treebranch and bound tree

Definition at line 8287 of file tree.c.

References SCIP_Node::nodetype, NULL, SCIP_Tree::path, SCIP_Tree::pathlen, SCIP_Tree::probingroot, SCIP_NODETYPE_PROBINGNODE, and SCIPnodeGetDepth().

◆ SCIPtreeGetFocusNode()

◆ SCIPtreeGetFocusDepth()

◆ SCIPtreeHasFocusNodeLP()

SCIP_Bool SCIPtreeHasFocusNodeLP ( SCIP_TREE tree)

returns, whether the LP was or is to be solved in the focus node

Parameters
treebranch and bound tree

Definition at line 8334 of file tree.c.

References SCIP_Tree::focusnodehaslp, and NULL.

Referenced by addCurrentSolution(), enforceConstraints(), propAndSolve(), SCIPprimalHeuristics(), SCIPsolveCIP(), SCIPtreeCalcChildEstimate(), SCIPtreeCalcNodeselPriority(), SCIPtreeHasCurrentNodeLP(), solveNode(), solveNodeLP(), and updateEstimate().

◆ SCIPtreeSetFocusNodeLP()

void SCIPtreeSetFocusNodeLP ( SCIP_TREE tree,
SCIP_Bool  solvelp 
)

sets mark to solve or to ignore the LP while processing the focus node

Parameters
treebranch and bound tree
solvelpshould the LP be solved in focus node?

Definition at line 8344 of file tree.c.

References SCIP_Tree::focusnodehaslp, and NULL.

Referenced by enforceConstraints(), propAndSolve(), SCIPsetFocusnodeLP(), and solveNode().

◆ SCIPtreeIsFocusNodeLPConstructed()

SCIP_Bool SCIPtreeIsFocusNodeLPConstructed ( SCIP_TREE tree)

◆ SCIPtreeInRepropagation()

SCIP_Bool SCIPtreeInRepropagation ( SCIP_TREE tree)

returns whether the focus node is already solved and only propagated again

Parameters
treebranch and bound tree

Definition at line 8365 of file tree.c.

References SCIP_Tree::focusnode, NULL, SCIP_NODETYPE_REFOCUSNODE, and SCIPnodeGetType().

Referenced by primalAddSol(), primalSetCutoffbound(), and SCIPinRepropagation().

◆ SCIPtreeGetCurrentNode()

SCIP_NODE* SCIPtreeGetCurrentNode ( SCIP_TREE tree)

◆ SCIPtreeGetCurrentDepth()

int SCIPtreeGetCurrentDepth ( SCIP_TREE tree)

gets depth of current node in the tree, i.e. the length of the active path minus 1, or -1 if no current node exists

Parameters
treebranch and bound tree

Definition at line 8392 of file tree.c.

References SCIP_Node::depth, SCIP_Tree::focusnode, NULL, SCIP_Tree::path, SCIP_Tree::pathlen, and SCIPtreeProbing().

Referenced by addBoundViolated(), analyzeStrongbranch(), conflictAddConflictCons(), conflictAddConflictset(), conflictAnalyze(), conflictAnalyzeBoundexceedingLP(), conflictAnalyzeInfeasibleLP(), conflictAnalyzeLP(), conflictCreateReconvergenceConss(), conflictsetCalcInsertDepth(), priceAndCutLoop(), primalSetUpperbound(), propagationRound(), propAndSolve(), runBoundHeuristic(), SCIPaddCons(), SCIPaddPricedVar(), SCIPaddRow(), SCIPaggregateVars(), SCIPbranchruleExecExternSol(), SCIPbranchruleExecLPSol(), SCIPbranchruleExecPseudoSol(), SCIPchgVarLb(), SCIPchgVarLbGlobal(), SCIPchgVarUb(), SCIPchgVarUbGlobal(), SCIPconflictAnalyze(), SCIPconflictAnalyzePseudo(), SCIPconflictAnalyzeStrongbranch(), SCIPconflictFlushConss(), SCIPconshdlrInitLP(), SCIPconstructCurrentLP(), SCIPfixVar(), SCIPgetDepth(), SCIPgetSepaMinEfficacy(), SCIPinferBinvarCons(), SCIPinferBinvarProp(), SCIPinferVarFixCons(), SCIPinferVarFixProp(), SCIPinferVarLbCons(), SCIPinferVarLbProp(), SCIPinferVarUbCons(), SCIPinferVarUbProp(), SCIPisCutEfficacious(), SCIPisEfficacious(), SCIPmultiaggregateVar(), SCIPpricestoreAddProbVars(), SCIPpricestoreApplyVars(), SCIPprimalHeuristics(), SCIPremoveInefficaciousCuts(), SCIPseparateCutpool(), SCIPseparateSol(), SCIPsolveCIP(), SCIPsolveProbingRelax(), SCIPtightenVarLb(), SCIPtightenVarLbGlobal(), SCIPtightenVarUb(), SCIPtightenVarUbGlobal(), SCIPtreeCalcNodeselPriority(), SCIPtreeGetProbingDepth(), solStamp(), solveNodeLP(), and solveProbingLP().

◆ SCIPtreeHasCurrentNodeLP()

◆ SCIPtreeGetProbingDepth()

int SCIPtreeGetProbingDepth ( SCIP_TREE tree)

returns the current probing depth, i.e. the number of probing sub nodes existing in the probing path

Parameters
treebranch and bound tree

Definition at line 8420 of file tree.c.

References NULL, SCIP_Tree::probingroot, SCIPnodeGetDepth(), SCIPtreeGetCurrentDepth(), and SCIPtreeProbing().

Referenced by performStrongbranchWithPropagation(), SCIPbacktrackProbing(), SCIPgetProbingDepth(), SCIPtreeBacktrackProbing(), and treeBacktrackProbing().

◆ SCIPtreeGetEffectiveRootDepth()

int SCIPtreeGetEffectiveRootDepth ( SCIP_TREE tree)

returns the depth of the effective root node (i.e. the first depth level of a node with at least two children)

Parameters
treebranch and bound tree

Definition at line 8431 of file tree.c.

References SCIP_Tree::effectiverootdepth, and NULL.

Referenced by conflictAnalyzeLP(), createAndAddProofcons(), runBoundHeuristic(), SCIPaddCons(), SCIPaddConsNode(), SCIPdelConsLocal(), SCIPdelConsNode(), SCIPgetEffectiveRootDepth(), SCIPnodepqBound(), and tightenSingleVar().

◆ SCIPtreeGetRootNode()

SCIP_NODE* SCIPtreeGetRootNode ( SCIP_TREE tree)

gets the root node of the tree

Parameters
treebranch and bound tree

Definition at line 8442 of file tree.c.

References NULL, and SCIP_Tree::root.

Referenced by applyImplic(), initSolve(), SCIPgetRootNode(), SCIPreoptSplitRoot(), SCIPvarAddVlb(), SCIPvarAddVub(), SCIPvarFixBinary(), sepastoreApplyLb(), sepastoreApplyUb(), and varAddImplic().

◆ SCIPtreeProbingObjChanged()

SCIP_Bool SCIPtreeProbingObjChanged ( SCIP_TREE tree)

returns whether we are in probing and the objective value of at least one column was changed

Parameters
treebranch and bound tree

Definition at line 8453 of file tree.c.

References NULL, SCIP_Tree::probingobjchanged, and SCIPtreeProbing().

Referenced by SCIPchgVarObjProbing(), and SCIPisObjChangedProbing().

◆ SCIPtreeMarkProbingObjChanged()

void SCIPtreeMarkProbingObjChanged ( SCIP_TREE tree)

marks the current probing node to have a changed objective function

Parameters
treebranch and bound tree

Definition at line 8464 of file tree.c.

References NULL, SCIP_Tree::probingobjchanged, SCIPtreeProbing(), and TRUE.

Referenced by SCIPchgVarObjProbing().