Detailed Description

methods for primal heuristics

Author: Tobias Achterberg; Timo Berthold

Definition in file heur.c.

#include <assert.h>
#include <string.h>
#include "scip/def.h"
#include "scip/set.h"
#include "scip/clock.h"
#include "scip/paramset.h"
#include "scip/primal.h"
#include "scip/scip.h"
#include "scip/heur.h"
#include "scip/pub_message.h"
#include "scip/pub_misc.h"
#include "scip/struct_heur.h"

Go to the source code of this file.

Functions
	SCIP_DECL_SORTPTRCOMP (SCIPheurComp)

	SCIP_DECL_SORTPTRCOMP (SCIPheurCompName)

static	SCIP_DECL_PARAMCHGD (paramChgdHeurPriority)

void	SCIPdivesetReset (SCIP_DIVESET *diveset)

void	SCIPdivesetUpdateStats (SCIP_DIVESET diveset, SCIP_STAT stat, int depth, int nprobingnodes, int nbacktracks, SCIP_Longint nsolsfound, SCIP_Longint nbestsolsfound, SCIP_Bool leavesol)

static SCIP_RETCODE	heurAddDiveset (SCIP_HEUR heur, SCIP_DIVESET diveset)

SCIP_RETCODE	SCIPdivesetCreate (SCIP_DIVESET *diveset, SCIP_HEUR heur, const char name, SCIP_SET set, SCIP_MESSAGEHDLR messagehdlr, BMS_BLKMEM blkmem, SCIP_Real minreldepth, SCIP_Real maxreldepth, SCIP_Real maxlpiterquot, SCIP_Real maxdiveubquot, SCIP_Real maxdiveavgquot, SCIP_Real maxdiveubquotnosol, SCIP_Real maxdiveavgquotnosol, SCIP_Real lpresolvedomchgquot, int lpsolvefreq, int maxlpiterofs, SCIP_Bool backtrack, SCIP_Bool onlylpbranchcands, SCIP_DIVETYPE divetypemask, SCIP_DECL_DIVESETGETSCORE((*divesetgetscore)))

SCIP_HEUR *	SCIPdivesetGetHeur (SCIP_DIVESET *diveset)

SCIP_SOL *	SCIPdivesetGetWorkSolution (SCIP_DIVESET *diveset)

void	SCIPdivesetSetWorkSolution (SCIP_DIVESET diveset, SCIP_SOL sol)

const char *	SCIPdivesetGetName (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetMinRelDepth (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetMaxRelDepth (SCIP_DIVESET *diveset)

SCIP_Longint	SCIPdivesetGetSolSuccess (SCIP_DIVESET *diveset)

int	SCIPdivesetGetNCalls (SCIP_DIVESET *diveset)

int	SCIPdivesetGetNSolutionCalls (SCIP_DIVESET *diveset)

int	SCIPdivesetGetMinDepth (SCIP_DIVESET *diveset)

int	SCIPdivesetGetMaxDepth (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetAvgDepth (SCIP_DIVESET *diveset)

int	SCIPdivesetGetMinSolutionDepth (SCIP_DIVESET *diveset)

int	SCIPdivesetGetMaxSolutionDepth (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetAvgSolutionDepth (SCIP_DIVESET *diveset)

SCIP_Longint	SCIPdivesetGetNLPIterations (SCIP_DIVESET *diveset)

SCIP_Longint	SCIPdivesetGetNProbingNodes (SCIP_DIVESET *diveset)

SCIP_Longint	SCIPdivesetGetNBacktracks (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetMaxLPIterQuot (SCIP_DIVESET *diveset)

int	SCIPdivesetGetMaxLPIterOffset (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetUbQuotNoSol (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetAvgQuotNoSol (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetUbQuot (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetAvgQuot (SCIP_DIVESET *diveset)

SCIP_Bool	SCIPdivesetUseBacktrack (SCIP_DIVESET *diveset)

int	SCIPdivesetGetLPSolveFreq (SCIP_DIVESET *diveset)

SCIP_Real	SCIPdivesetGetLPResolveDomChgQuot (SCIP_DIVESET *diveset)

SCIP_Bool	SCIPdivesetUseOnlyLPBranchcands (SCIP_DIVESET *diveset)

SCIP_Bool	SCIPdivesetSupportsType (SCIP_DIVESET *diveset, SCIP_DIVETYPE divetype)

void	SCIPdivesetUpdateLPStats (SCIP_DIVESET diveset, SCIP_STAT stat, SCIP_Longint niterstoadd)

static void	divesetFree (SCIP_DIVESET **diveset)

SCIP_RETCODE	SCIPdivesetGetScore (SCIP_DIVESET diveset, SCIP_SET set, SCIP_DIVETYPE divetype, SCIP_VAR divecand, SCIP_Real divecandsol, SCIP_Real divecandfrac, SCIP_Real candscore, SCIP_Bool *roundup)

SCIP_RETCODE	SCIPheurCopyInclude (SCIP_HEUR heur, SCIP_SET set)

SCIP_RETCODE	SCIPheurCreate (SCIP_HEUR *heur, SCIP_SET set, SCIP_MESSAGEHDLR messagehdlr, BMS_BLKMEM blkmem, const char name, const char desc, char dispchar, int priority, int freq, int freqofs, int maxdepth, unsigned int timingmask, SCIP_Bool usessubscip, SCIP_DECL_HEURCOPY((heurcopy)), SCIP_DECL_HEURFREE((heurfree)), SCIP_DECL_HEURINIT((heurinit)), SCIP_DECL_HEUREXIT((heurexit)), SCIP_DECL_HEURINITSOL((heurinitsol)), SCIP_DECL_HEUREXITSOL((heurexitsol)), SCIP_DECL_HEUREXEC((heurexec)), SCIP_HEURDATA heurdata)

SCIP_RETCODE	SCIPheurFree (SCIP_HEUR *heur, SCIP_SET set)

SCIP_RETCODE	SCIPheurInit (SCIP_HEUR heur, SCIP_SET set)

SCIP_RETCODE	SCIPheurExit (SCIP_HEUR heur, SCIP_SET set)

SCIP_RETCODE	SCIPheurInitsol (SCIP_HEUR heur, SCIP_SET set)

SCIP_RETCODE	SCIPheurExitsol (SCIP_HEUR heur, SCIP_SET set)

SCIP_Bool	SCIPheurShouldBeExecuted (SCIP_HEUR heur, int depth, int lpstateforkdepth, SCIP_HEURTIMING heurtiming, SCIP_Bool delayed)

SCIP_RETCODE	SCIPheurExec (SCIP_HEUR heur, SCIP_SET set, SCIP_PRIMAL primal, int depth, int lpstateforkdepth, SCIP_HEURTIMING heurtiming, SCIP_Bool nodeinfeasible, int ndelayedheurs, SCIP_RESULT *result)

SCIP_HEURDATA *	SCIPheurGetData (SCIP_HEUR *heur)

void	SCIPheurSetData (SCIP_HEUR heur, SCIP_HEURDATA heurdata)

void	SCIPheurSetCopy (SCIP_HEUR heur, SCIP_DECL_HEURCOPY((heurcopy)))

void	SCIPheurSetFree (SCIP_HEUR heur, SCIP_DECL_HEURFREE((heurfree)))

void	SCIPheurSetInit (SCIP_HEUR heur, SCIP_DECL_HEURINIT((heurinit)))

void	SCIPheurSetExit (SCIP_HEUR heur, SCIP_DECL_HEUREXIT((heurexit)))

void	SCIPheurSetInitsol (SCIP_HEUR heur, SCIP_DECL_HEURINITSOL((heurinitsol)))

void	SCIPheurSetExitsol (SCIP_HEUR heur, SCIP_DECL_HEUREXITSOL((heurexitsol)))

const char *	SCIPheurGetName (SCIP_HEUR *heur)

const char *	SCIPheurGetDesc (SCIP_HEUR *heur)

char	SCIPheurGetDispchar (SCIP_HEUR *heur)

SCIP_HEURTIMING	SCIPheurGetTimingmask (SCIP_HEUR *heur)

void	SCIPheurSetTimingmask (SCIP_HEUR *heur, SCIP_HEURTIMING timingmask)

SCIP_Bool	SCIPheurUsesSubscip (SCIP_HEUR *heur)

int	SCIPheurGetPriority (SCIP_HEUR *heur)

void	SCIPheurSetPriority (SCIP_HEUR heur, SCIP_SET set, int priority)

int	SCIPheurGetFreq (SCIP_HEUR *heur)

void	SCIPheurSetFreq (SCIP_HEUR *heur, int freq)

int	SCIPheurGetFreqofs (SCIP_HEUR *heur)

int	SCIPheurGetMaxdepth (SCIP_HEUR *heur)

SCIP_Longint	SCIPheurGetNCalls (SCIP_HEUR *heur)

SCIP_Longint	SCIPheurGetNSolsFound (SCIP_HEUR *heur)

SCIP_Longint	SCIPheurGetNBestSolsFound (SCIP_HEUR *heur)

SCIP_Bool	SCIPheurIsInitialized (SCIP_HEUR *heur)

void	SCIPheurEnableOrDisableClocks (SCIP_HEUR *heur, SCIP_Bool enable)

SCIP_Real	SCIPheurGetSetupTime (SCIP_HEUR *heur)

SCIP_Real	SCIPheurGetTime (SCIP_HEUR *heur)

SCIP_DIVESET **	SCIPheurGetDivesets (SCIP_HEUR *heur)

int	SCIPheurGetNDivesets (SCIP_HEUR *heur)

Function Documentation

SCIP_DECL_SORTPTRCOMP ( SCIPheurComp )

compares two heuristics w. r. to their delay positions and their priority

Definition at line 40 of file heur.c.

References SCIP_Heur::delaypos, SCIP_Heur::freq, SCIP_Heur::ncalls, NULL, and SCIP_Heur::priority.

SCIP_DECL_SORTPTRCOMP ( SCIPheurCompName )

comparison method for sorting heuristics w.r.t. to their name

Definition at line 64 of file heur.c.

References SCIPheurGetName().

static SCIP_DECL_PARAMCHGD ( paramChgdHeurPriority )

static

method to call, when the priority of a heuristic was changed

Definition at line 71 of file heur.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPparamGetData(), SCIPparamGetInt(), and SCIPsetHeurPriority().

void SCIPdivesetReset ( SCIP_DIVESET * diveset )

resets diving settings counters

Parameters

diveset diveset to be reset

Definition at line 85 of file heur.c.

References SCIP_Diveset::maxdepth, SCIP_Diveset::maxsoldepth, SCIP_Diveset::mindepth, SCIP_Diveset::minsoldepth, SCIP_Diveset::nbestsolsfound, SCIP_Diveset::ncalls, SCIP_Diveset::nlpiterations, SCIP_Diveset::nlps, SCIP_Diveset::nsolcalls, SCIP_Diveset::nsolsfound, NULL, SCIP_Diveset::totaldepth, SCIP_Diveset::totalnbacktracks, SCIP_Diveset::totalnnodes, and SCIP_Diveset::totalsoldepth.

Referenced by SCIPdivesetCreate(), and SCIPheurInit().

void SCIPdivesetUpdateStats	(	SCIP_DIVESET *	diveset,
		SCIP_STAT *	stat,
		int	depth,
		int	nprobingnodes,
		int	nbacktracks,
		SCIP_Longint	nsolsfound,
		SCIP_Longint	nbestsolsfound,
		SCIP_Bool	leavesol
	)

update diveset statistics and global diveset statistics

Parameters

diveset	diveset to be reset
stat	global SCIP statistics
depth	the depth reached this time
nprobingnodes	the number of probing nodes explored this time
nbacktracks	the number of backtracks during probing this time
nsolsfound	number of new solutions found this time
nbestsolsfound	number of new best solutions found this time
leavesol	has the diving heuristic reached a feasible leaf

Definition at line 108 of file heur.c.

References MAX, SCIP_Diveset::maxdepth, SCIP_Diveset::maxsoldepth, MIN, SCIP_Diveset::mindepth, SCIP_Diveset::minsoldepth, SCIP_Diveset::nbestsolsfound, SCIP_Diveset::ncalls, SCIP_Stat::ndivesetcalls, SCIP_Diveset::nsolcalls, SCIP_Diveset::nsolsfound, NULL, SCIP_Diveset::totaldepth, SCIP_Stat::totaldivesetdepth, SCIP_Diveset::totalnbacktracks, SCIP_Diveset::totalnnodes, and SCIP_Diveset::totalsoldepth.

Referenced by SCIPupdateDivesetStats().

static SCIP_RETCODE heurAddDiveset	(	SCIP_HEUR *	heur,
		SCIP_DIVESET *	diveset
	)

static

append diveset to heuristic array of divesets

Parameters

heur	the heuristic to which this dive setting belongs
diveset	pointer to the freshly created diveset

Definition at line 146 of file heur.c.

References BMSallocMemoryArray, BMSreallocMemoryArray, SCIP_Heur::divesets, SCIP_Diveset::heur, SCIP_Heur::ndivesets, NULL, SCIP_ALLOC, and SCIP_OKAY.

Referenced by SCIPdivesetCreate().

SCIP_RETCODE SCIPdivesetCreate	(	SCIP_DIVESET **	diveset,
		SCIP_HEUR *	heur,
		const char *	name,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		BMS_BLKMEM *	blkmem,
		SCIP_Real	minreldepth,
		SCIP_Real	maxreldepth,
		SCIP_Real	maxlpiterquot,
		SCIP_Real	maxdiveubquot,
		SCIP_Real	maxdiveavgquot,
		SCIP_Real	maxdiveubquotnosol,
		SCIP_Real	maxdiveavgquotnosol,
		SCIP_Real	lpresolvedomchgquot,
		int	lpsolvefreq,
		int	maxlpiterofs,
		SCIP_Bool	backtrack,
		SCIP_Bool	onlylpbranchcands,
		SCIP_DIVETYPE	divetypemask,
		SCIP_DECL_DIVESETGETSCORE((*divesetgetscore))
	)

create a set of diving heuristic settings

Parameters

diveset	pointer to the freshly created diveset
heur	the heuristic to which this dive setting belongs
name	name for the diveset, or NULL if the name of the heuristic should be used
set	global SCIP settings
messagehdlr	message handler
blkmem	block memory for parameter settings
minreldepth	minimal relative depth to start diving
maxreldepth	maximal relative depth to start diving
maxlpiterquot	maximal fraction of diving LP iterations compared to node LP iterations
maxdiveubquot	maximal quotient (curlowerbound - lowerbound)/(cutoffbound - lowerbound) where diving is performed (0.0: no limit)
maxdiveavgquot	maximal quotient (curlowerbound - lowerbound)/(avglowerbound - lowerbound) where diving is performed (0.0: no limit)
maxdiveubquotnosol	maximal UBQUOT when no solution was found yet (0.0: no limit)
maxdiveavgquotnosol	maximal AVGQUOT when no solution was found yet (0.0: no limit)
lpresolvedomchgquot	percentage of immediate domain changes during probing to trigger LP resolve
lpsolvefreq	LP solve frequency for (0: only if enough domain reductions are found by propagation)
maxlpiterofs	additional number of allowed LP iterations
backtrack	use one level of backtracking if infeasibility is encountered?
onlylpbranchcands	should only LP branching candidates be considered instead of the slower but more general constraint handler diving variable selection?
divetypemask	bit mask that represents the supported dive types by this dive set

Definition at line 176 of file heur.c.

References BMSallocMemory, BMSduplicateMemoryArray, FALSE, heurAddDiveset(), NULL, paramname, SCIP_ALLOC, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_REAL_MAX, SCIPdivesetReset(), SCIPheurGetName(), SCIPsetAddBoolParam(), SCIPsetAddIntParam(), SCIPsetAddRealParam(), SCIPsnprintf(), and TRUE.

Referenced by SCIPcreateDiveset().

SCIP_HEUR* SCIPdivesetGetHeur ( SCIP_DIVESET * diveset )

get the heuristic to which this diving setting belongs

Parameters

diveset diving settings

Definition at line 302 of file heur.c.

References SCIP_Diveset::heur.

SCIP_SOL* SCIPdivesetGetWorkSolution ( SCIP_DIVESET * diveset )

get the working solution of this dive set

Parameters

diveset diving settings

Definition at line 310 of file heur.c.

References NULL, and SCIP_Diveset::sol.

void SCIPdivesetSetWorkSolution	(	SCIP_DIVESET *	diveset,
		SCIP_SOL *	sol
	)

set the working solution for this dive set

Parameters

diveset	diving settings
sol	new working solution for this dive set, or NULL

Definition at line 320 of file heur.c.

References NULL, and SCIP_Diveset::sol.

Referenced by SCIPperformGenericDivingAlgorithm().

const char* SCIPdivesetGetName ( SCIP_DIVESET * diveset )

get the name of the dive set

Parameters

diveset diving settings

Definition at line 331 of file heur.c.

References SCIP_Diveset::name, and NULL.

Referenced by printHeuristicStatistics(), SCIPperformGenericDivingAlgorithm(), and solveLP().

SCIP_Real SCIPdivesetGetMinRelDepth ( SCIP_DIVESET * diveset )

get the minimum relative depth of the diving settings

Parameters

diveset diving settings

Definition at line 341 of file heur.c.

References SCIP_Diveset::minreldepth.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetMaxRelDepth ( SCIP_DIVESET * diveset )

get the maximum relative depth of the diving settings

Parameters

diveset diving settings

Definition at line 349 of file heur.c.

References SCIP_Diveset::maxreldepth.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Longint SCIPdivesetGetSolSuccess ( SCIP_DIVESET * diveset )

get the number of successful runs of the diving settings

Parameters

diveset diving settings

Definition at line 357 of file heur.c.

References SCIP_Diveset::nbestsolsfound, and SCIP_Diveset::nsolsfound.

Referenced by SCIPperformGenericDivingAlgorithm().

int SCIPdivesetGetNCalls ( SCIP_DIVESET * diveset )

get the number of calls to this dive set

Parameters

diveset diving settings

Definition at line 365 of file heur.c.

References SCIP_Diveset::ncalls, and NULL.

Referenced by printHeuristicStatistics(), and SCIPperformGenericDivingAlgorithm().

int SCIPdivesetGetNSolutionCalls ( SCIP_DIVESET * diveset )

get the number of calls successfully terminated at a feasible leaf node

Parameters

diveset diving settings

Definition at line 375 of file heur.c.

References SCIP_Diveset::nsolcalls, and NULL.

Referenced by printHeuristicStatistics().

int SCIPdivesetGetMinDepth ( SCIP_DIVESET * diveset )

get the minimum depth reached by this dive set

Parameters

diveset diving settings

Definition at line 385 of file heur.c.

References SCIP_Diveset::mindepth, and NULL.

Referenced by printHeuristicStatistics().

int SCIPdivesetGetMaxDepth ( SCIP_DIVESET * diveset )

get the maximum depth reached by this dive set

Parameters

diveset diving settings

Definition at line 395 of file heur.c.

References SCIP_Diveset::maxdepth, and NULL.

Referenced by printHeuristicStatistics().

SCIP_Real SCIPdivesetGetAvgDepth ( SCIP_DIVESET * diveset )

get the average depth this dive set reached during execution

Parameters

diveset diving settings

Definition at line 405 of file heur.c.

References SCIP_Diveset::ncalls, NULL, SCIP_Real, and SCIP_Diveset::totaldepth.

Referenced by printHeuristicStatistics().

int SCIPdivesetGetMinSolutionDepth ( SCIP_DIVESET * diveset )

get the minimum depth at which this dive set found a solution

Parameters

diveset diving settings

Definition at line 415 of file heur.c.

References SCIP_Diveset::minsoldepth, and NULL.

Referenced by printHeuristicStatistics().

int SCIPdivesetGetMaxSolutionDepth ( SCIP_DIVESET * diveset )

get the maximum depth at which this dive set found a solution

Parameters

diveset diving settings

Definition at line 425 of file heur.c.

References SCIP_Diveset::maxsoldepth, and NULL.

Referenced by printHeuristicStatistics().

SCIP_Real SCIPdivesetGetAvgSolutionDepth ( SCIP_DIVESET * diveset )

get the average depth at which this dive set found a solution

Parameters

diveset diving settings

Definition at line 435 of file heur.c.

References SCIP_Diveset::nsolcalls, NULL, SCIP_Real, and SCIP_Diveset::totalsoldepth.

Referenced by printHeuristicStatistics().

SCIP_Longint SCIPdivesetGetNLPIterations ( SCIP_DIVESET * diveset )

get the total number of LP iterations used by this dive set

Parameters

diveset diving settings

Definition at line 445 of file heur.c.

References SCIP_Diveset::nlpiterations, and NULL.

Referenced by printHeuristicStatistics(), SCIPperformGenericDivingAlgorithm(), and solveLP().

SCIP_Longint SCIPdivesetGetNProbingNodes ( SCIP_DIVESET * diveset )

get the total number of probing nodes used by this dive set

Parameters

diveset diving settings

Definition at line 455 of file heur.c.

References NULL, and SCIP_Diveset::totalnnodes.

Referenced by printHeuristicStatistics().

SCIP_Longint SCIPdivesetGetNBacktracks ( SCIP_DIVESET * diveset )

get the total number of backtracks performed by this dive set

Parameters

diveset diving settings

Definition at line 465 of file heur.c.

References NULL, and SCIP_Diveset::totalnbacktracks.

Referenced by printHeuristicStatistics().

SCIP_Real SCIPdivesetGetMaxLPIterQuot ( SCIP_DIVESET * diveset )

get the maximum LP iterations quotient of the diving settings

Parameters

diveset diving settings

Definition at line 475 of file heur.c.

References SCIP_Diveset::maxlpiterquot.

Referenced by SCIPperformGenericDivingAlgorithm().

int SCIPdivesetGetMaxLPIterOffset ( SCIP_DIVESET * diveset )

get the maximum LP iterations offset of the diving settings

Parameters

diveset diving settings

Definition at line 483 of file heur.c.

References SCIP_Diveset::maxlpiterofs.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetUbQuotNoSol ( SCIP_DIVESET * diveset )

get the maximum upper bound quotient parameter of the diving settings if no solution is available

Parameters

diveset diving settings

Definition at line 491 of file heur.c.

References SCIP_Diveset::maxdiveubquotnosol.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetAvgQuotNoSol ( SCIP_DIVESET * diveset )

get the average quotient parameter of the diving settings if no solution is available

Parameters

diveset diving settings

Definition at line 499 of file heur.c.

References SCIP_Diveset::maxdiveavgquotnosol.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetUbQuot ( SCIP_DIVESET * diveset )

get the maximum upper bound quotient parameter of the diving settings if an incumbent solution exists

Parameters

diveset diving settings

Definition at line 506 of file heur.c.

References SCIP_Diveset::maxdiveubquot.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetAvgQuot ( SCIP_DIVESET * diveset )

get the average upper bound quotient parameter of the diving settings if an incumbent solution exists

Parameters

diveset diving settings

Definition at line 514 of file heur.c.

References SCIP_Diveset::maxdiveavgquot.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Bool SCIPdivesetUseBacktrack ( SCIP_DIVESET * diveset )

should backtracking be applied?

Parameters

diveset diving settings

Definition at line 522 of file heur.c.

References SCIP_Diveset::backtrack.

Referenced by SCIPperformGenericDivingAlgorithm().

int SCIPdivesetGetLPSolveFreq ( SCIP_DIVESET * diveset )

returns the LP solve frequency for diving LPs (0: dynamically based on number of intermediate domain reductions)

Parameters

diveset diving settings

Definition at line 530 of file heur.c.

References SCIP_Diveset::lpsolvefreq, and NULL.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Real SCIPdivesetGetLPResolveDomChgQuot ( SCIP_DIVESET * diveset )

returns the domain reduction quotient for triggering an immediate resolve of the diving LP (0.0: always resolve)

Parameters

diveset diving settings

Definition at line 540 of file heur.c.

References SCIP_Diveset::lpresolvedomchgquot, and NULL.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Bool SCIPdivesetUseOnlyLPBranchcands ( SCIP_DIVESET * diveset )

should only LP branching candidates be considered instead of the slower but more general constraint handler diving variable selection?

Parameters

diveset diving settings

Definition at line 552 of file heur.c.

References NULL, and SCIP_Diveset::onlylpbranchcands.

Referenced by SCIPperformGenericDivingAlgorithm().

SCIP_Bool SCIPdivesetSupportsType	(	SCIP_DIVESET *	diveset,
		SCIP_DIVETYPE	divetype
	)

returns TRUE if dive set supports diving of the specified type

Parameters

diveset	diving settings
divetype	bit mask that represents the supported dive types by this dive set

Definition at line 562 of file heur.c.

References SCIP_Diveset::divetypemask, and NULL.

Referenced by getDiveBdChgsSOS1conflictgraph(), and getDiveBdChgsSOS1constraints().

void SCIPdivesetUpdateLPStats	(	SCIP_DIVESET *	diveset,
		SCIP_STAT *	stat,
		SCIP_Longint	niterstoadd
	)

update diveset LP statistics, should be called after every LP solved by this diving heuristic

Parameters

diveset	diving settings
stat	global SCIP statistics
niterstoadd	additional number of LP iterations to be added

Definition at line 573 of file heur.c.

References SCIP_Stat::ndivesetlpiterations, SCIP_Stat::ndivesetlps, SCIP_Diveset::nlpiterations, and SCIP_Diveset::nlps.

Referenced by SCIPupdateDivesetLPStats().

static void divesetFree ( SCIP_DIVESET ** diveset )

static

frees memory of a diveset

Parameters

diveset general diving settings

Definition at line 587 of file heur.c.

References BMSfreeMemory, BMSfreeMemoryArray, and NULL.

Referenced by SCIPheurFree().

SCIP_RETCODE SCIPdivesetGetScore	(	SCIP_DIVESET *	diveset,
		SCIP_SET *	set,
		SCIP_DIVETYPE	divetype,
		SCIP_VAR *	divecand,
		SCIP_Real	divecandsol,
		SCIP_Real	divecandfrac,
		SCIP_Real *	candscore,
		SCIP_Bool *	roundup
	)

get the candidate score and preferred rounding direction for a candidate variable

Parameters

diveset	general diving settings
set	SCIP settings
divetype	the type of diving that should be applied
divecand	the candidate for which the branching direction is requested
divecandsol	LP solution value of the candidate
divecandfrac	fractionality of the candidate
candscore	pointer to store the candidate score
roundup	pointer to store whether preferred direction for diving is upwards

Definition at line 599 of file heur.c.

References SCIP_Diveset::divetypemask, NULL, SCIP_CALL, and SCIP_OKAY.

Referenced by SCIPgetDivesetScore().

SCIP_RETCODE SCIPheurCopyInclude	(	SCIP_HEUR *	heur,
		SCIP_SET *	set
	)

copies the given primal heuristic to a new scip

Parameters

heur	primal heuristic
set	SCIP_SET of SCIP to copy to

Definition at line 624 of file heur.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, and SCIPheurGetName().

Referenced by SCIPsetCopyPlugins().

SCIP_RETCODE SCIPheurCreate	(	SCIP_HEUR **	heur,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		BMS_BLKMEM *	blkmem,
		const char *	name,
		const char *	desc,
		char	dispchar,
		int	priority,
		int	freq,
		int	freqofs,
		int	maxdepth,
		unsigned int	timingmask,
		SCIP_Bool	usessubscip,
		SCIP_DECL_HEURCOPY((*heurcopy))	,
		SCIP_DECL_HEURFREE((*heurfree))	,
		SCIP_DECL_HEURINIT((*heurinit))	,
		SCIP_DECL_HEUREXIT((*heurexit))	,
		SCIP_DECL_HEURINITSOL((*heurinitsol))	,
		SCIP_DECL_HEUREXITSOL((*heurexitsol))	,
		SCIP_DECL_HEUREXEC((*heurexec))	,
		SCIP_HEURDATA *	heurdata
	)

creates a primal heuristic

Parameters

heur	pointer to primal heuristic data structure
set	global SCIP settings
messagehdlr	message handler
blkmem	block memory for parameter settings
name	name of primal heuristic
desc	description of primal heuristic
dispchar	display character of primal heuristic
priority	priority of the primal heuristic
freq	frequency for calling primal heuristic
freqofs	frequency offset for calling primal heuristic
maxdepth	maximal depth level to call heuristic at (-1: no limit)
timingmask	positions in the node solving loop where heuristic should be executed
usessubscip	does the heuristic use a secondary SCIP instance?
heurdata	primal heuristic data

Definition at line 643 of file heur.c.

References BMSallocMemory, BMSduplicateMemoryArray, FALSE, NULL, paramname, SCIP_ALLOC, SCIP_CALL, SCIP_CLOCKTYPE_DEFAULT, SCIP_MAXSTRLEN, SCIP_OKAY, SCIPclockCreate(), SCIPsetAddIntParam(), SCIPsnprintf(), and TRUE.

Referenced by SCIPincludeHeur(), and SCIPincludeHeurBasic().

SCIP_RETCODE SCIPheurFree	(	SCIP_HEUR **	heur,
		SCIP_SET *	set
	)

calls destructor and frees memory of primal heuristic

Parameters

heur	pointer to primal heuristic data structure
set	global SCIP settings

Definition at line 728 of file heur.c.

References BMSfreeMemory, BMSfreeMemoryArray, BMSfreeMemoryArrayNull, divesetFree(), NULL, SCIP_CALL, SCIP_OKAY, and SCIPclockFree().

SCIP_RETCODE SCIPheurInit	(	SCIP_HEUR *	heur,
		SCIP_SET *	set
	)

initializes primal heuristic

Parameters

heur	primal heuristic
set	global SCIP settings

Definition at line 762 of file heur.c.

References SCIP_Heur::delaypos, SCIP_Heur::divesets, SCIP_Heur::heurclock, SCIP_Heur::initialized, SCIP_Heur::name, SCIP_Heur::nbestsolsfound, SCIP_Heur::ncalls, SCIP_Heur::ndivesets, SCIP_Heur::nsolsfound, NULL, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockReset(), SCIPclockStart(), SCIPclockStop(), SCIPdivesetReset(), SCIPerrorMessage, SCIP_Heur::setuptime, and TRUE.

Referenced by SCIPsetInitPlugins().

SCIP_RETCODE SCIPheurExit	(	SCIP_HEUR *	heur,
		SCIP_SET *	set
	)

calls exit method of primal heuristic

Parameters

heur	primal heuristic
set	global SCIP settings

Definition at line 812 of file heur.c.

References FALSE, SCIP_Heur::initialized, SCIP_Heur::name, NULL, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), SCIPerrorMessage, and SCIP_Heur::setuptime.

Referenced by SCIPsetExitPlugins().

SCIP_RETCODE SCIPheurInitsol	(	SCIP_HEUR *	heur,
		SCIP_SET *	set
	)

informs primal heuristic that the branch and bound process is being started

Parameters

heur	primal heuristic
set	global SCIP settings

Definition at line 842 of file heur.c.

References SCIP_Heur::delaypos, FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Heur::setuptime.

Referenced by SCIPsetExitprePlugins().

SCIP_RETCODE SCIPheurExitsol	(	SCIP_HEUR *	heur,
		SCIP_SET *	set
	)

informs primal heuristic that the branch and bound process data is being freed

Parameters

heur	primal heuristic
set	global SCIP settings

Definition at line 872 of file heur.c.

References NULL, SCIP_CALL, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), and SCIP_Heur::setuptime.

Referenced by SCIPsetInitsolPlugins().

SCIP_Bool SCIPheurShouldBeExecuted	(	SCIP_HEUR *	heur,
		int	depth,
		int	lpstateforkdepth,
		SCIP_HEURTIMING	heurtiming,
		SCIP_Bool *	delayed
	)

should the heuristic be executed at the given depth, frequency, timing, ...

Parameters

heur	primal heuristic
depth	depth of current node
lpstateforkdepth	depth of the last node with solved LP
heurtiming	current point in the node solving process
delayed	pointer to store whether the heuristic should be delayed

Definition at line 896 of file heur.c.

References SCIP_Heur::delaypos, FALSE, SCIP_Heur::freq, SCIP_Heur::freqofs, SCIP_Heur::maxdepth, SCIP_Bool, SCIP_HEURTIMING_AFTERLPNODE, SCIP_HEURTIMING_AFTERLPPLUNGE, SCIP_HEURTIMING_AFTERPSEUDONODE, SCIP_HEURTIMING_AFTERPSEUDOPLUNGE, SCIP_HEURTIMING_BEFOREPRESOL, SCIP_HEURTIMING_DURINGPRESOLLOOP, SCIP_Heur::timingmask, and TRUE.

Referenced by SCIPheurExec(), and SCIPprimalHeuristics().

SCIP_RETCODE SCIPheurExec	(	SCIP_HEUR *	heur,
		SCIP_SET *	set,
		SCIP_PRIMAL *	primal,
		int	depth,
		int	lpstateforkdepth,
		SCIP_HEURTIMING	heurtiming,
		SCIP_Bool	nodeinfeasible,
		int *	ndelayedheurs,
		SCIP_RESULT *	result
	)

calls execution method of primal heuristic

Parameters

heur	primal heuristic
set	global SCIP settings
primal	primal data
depth	depth of current node
lpstateforkdepth	depth of the last node with solved LP
heurtiming	current point in the node solving process
nodeinfeasible	was the current node already detected to be infeasible?
ndelayedheurs	pointer to count the number of delayed heuristics
result	pointer to store the result of the callback method

Definition at line 958 of file heur.c.

References SCIP_Heur::delaypos, FALSE, SCIP_Heur::freq, SCIP_Heur::freqofs, SCIP_Heur::heurclock, SCIP_Heur::maxdepth, SCIP_Heur::name, SCIP_Primal::nbestsolsfound, SCIP_Heur::nbestsolsfound, SCIP_Heur::ncalls, SCIP_Primal::nsolsfound, SCIP_Heur::nsolsfound, NULL, SCIP_Bool, SCIP_CALL, SCIP_DELAYED, SCIP_DIDNOTFIND, SCIP_DIDNOTRUN, SCIP_FOUNDSOL, SCIP_HEURTIMING_BEFOREPRESOL, SCIP_HEURTIMING_DURINGPRESOLLOOP, SCIP_INVALIDRESULT, SCIP_Longint, SCIP_OKAY, SCIPclockStart(), SCIPclockStop(), SCIPdebugMessage, SCIPerrorMessage, and SCIPheurShouldBeExecuted().

Referenced by SCIPprimalHeuristics().

SCIP_HEURDATA* SCIPheurGetData ( SCIP_HEUR * heur )

gets user data of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1058 of file heur.c.

References SCIP_Heur::heurdata, and NULL.

Referenced by createSolFromNLP(), createSolFromSubScipSol(), SCIP_DECL_HEURCOPY(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEUREXIT(), SCIP_DECL_HEUREXITSOL(), SCIP_DECL_HEURFREE(), SCIP_DECL_HEURINIT(), SCIP_DECL_HEURINITSOL(), SCIPaddLinearConsToNlpHeurSubNlp(), SCIPapplyHeurDualval(), SCIPapplyHeurSubNlp(), SCIPapplyProximity(), SCIPapplyRens(), SCIPapplyUndercover(), SCIPapplyZeroobj(), SCIPdeleteSubproblemProximity(), SCIPfindObjHeur(), SCIPgetObjHeur(), SCIPgetStartCandidateHeurSubNlp(), SCIPgetSubScipHeurSubNlp(), SCIPgetVarMappingScip2SubScipHeurSubNlp(), SCIPgetVarMappingSubScip2ScipHeurSubNlp(), SCIPheurPassIndicator(), SCIPheurPassSolAddSol(), SCIPheurPassSolTrySol(), SCIPreoptsolsGetNCheckedsols(), SCIPreoptsolsGetNImprovingsols(), SCIPresolveSolHeurSubNlp(), SCIPupdateStartpointHeurSubNlp(), solveSubNLP(), solveSubproblem(), and storeSolution().

void SCIPheurSetData	(	SCIP_HEUR *	heur,
		SCIP_HEURDATA *	heurdata
	)

sets user data of primal heuristic; user has to free old data in advance!

Parameters

heur	primal heuristic
heurdata	new primal heuristic user data

Definition at line 1068 of file heur.c.

References SCIP_Heur::heurdata, and NULL.

Referenced by presolveTwoOpt(), SCIP_DECL_HEUREXIT(), SCIP_DECL_HEUREXITSOL(), SCIP_DECL_HEURFREE(), SCIP_DECL_HEURINIT(), and SCIP_DECL_HEURINITSOL().

void SCIPheurSetCopy	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEURCOPY((*heurcopy))
	)

sets copy callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1081 of file heur.c.

References NULL.

Referenced by SCIPsetHeurCopy().

void SCIPheurSetFree	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEURFREE((*heurfree))
	)

sets destructor callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1092 of file heur.c.

References NULL.

Referenced by SCIPsetHeurFree().

void SCIPheurSetInit	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEURINIT((*heurinit))
	)

sets initialization callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1103 of file heur.c.

References NULL.

Referenced by SCIPsetHeurInit().

void SCIPheurSetExit	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEUREXIT((*heurexit))
	)

sets deinitialization callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1114 of file heur.c.

References NULL.

Referenced by SCIPsetHeurExit().

void SCIPheurSetInitsol	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEURINITSOL((*heurinitsol))
	)

sets solving process initialization callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1125 of file heur.c.

References NULL.

Referenced by SCIPsetHeurInitsol().

void SCIPheurSetExitsol	(	SCIP_HEUR *	heur,
		SCIP_DECL_HEUREXITSOL((*heurexitsol))
	)

sets solving process deinitialization callback of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1136 of file heur.c.

References NULL.

Referenced by SCIPsetHeurExitsol().

const char* SCIPheurGetName ( SCIP_HEUR * heur )

gets name of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1147 of file heur.c.

References SCIP_Heur::name, and NULL.

Referenced by createNewSol(), paramsetSetHeuristicsAggressive(), paramsetSetHeuristicsDefault(), paramsetSetHeuristicsOff(), presolve(), presolveRound(), printHeuristicStatistics(), printSolutionStatistics(), proposeFeasibleSolution(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_EVENTEXEC(), SCIP_DECL_HEURCOPY(), SCIP_DECL_HEUREXEC(), SCIP_DECL_HEUREXIT(), SCIP_DECL_HEUREXITSOL(), SCIP_DECL_HEURFREE(), SCIP_DECL_HEURINIT(), SCIP_DECL_HEURINITSOL(), SCIP_DECL_SORTPTRCOMP(), SCIPaddLinearConsToNlpHeurSubNlp(), SCIPapplyProximity(), SCIPdivesetCreate(), SCIPgetStartCandidateHeurSubNlp(), SCIPgetSubScipHeurSubNlp(), SCIPgetVarMappingScip2SubScipHeurSubNlp(), SCIPgetVarMappingSubScip2ScipHeurSubNlp(), SCIPheurCopyInclude(), SCIPheurPassIndicator(), SCIPheurPassSolAddSol(), SCIPheurPassSolTrySol(), SCIPincludeDialogDefaultFix(), SCIPincludeDialogDefaultSet(), SCIPparamsetSetToSubscipsOff(), SCIPperformGenericDivingAlgorithm(), SCIPprimalHeuristics(), SCIPreoptAddSol(), SCIPsetSortPropsPresol(), and SCIPupdateStartpointHeurSubNlp().

const char* SCIPheurGetDesc ( SCIP_HEUR * heur )

gets description of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1157 of file heur.c.

References SCIP_Heur::desc, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC(), SCIPincludeDialogDefaultFix(), and SCIPincludeDialogDefaultSet().

char SCIPheurGetDispchar ( SCIP_HEUR * heur )

gets display character of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1167 of file heur.c.

References SCIP_Heur::dispchar, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC(), and SCIP_DECL_DISPOUTPUT().

SCIP_HEURTIMING SCIPheurGetTimingmask ( SCIP_HEUR * heur )

returns the timing mask of the heuristic

Parameters

heur	primal heuristic

Definition at line 1177 of file heur.c.

References NULL, and SCIP_Heur::timingmask.

void SCIPheurSetTimingmask	(	SCIP_HEUR *	heur,
		SCIP_HEURTIMING	timingmask
	)

sets new timing mask for heuristic

Parameters

heur	primal heuristic
timingmask	new timing mask of heuristic

Definition at line 1187 of file heur.c.

References NULL, and SCIP_Heur::timingmask.

Referenced by SCIP_DECL_HEUREXEC(), SCIP_DECL_HEUREXITSOL(), SCIP_DECL_HEURINIT(), and SCIP_DECL_HEURINITSOL().

SCIP_Bool SCIPheurUsesSubscip ( SCIP_HEUR * heur )

does the heuristic use a secondary SCIP instance?

Parameters

heur	primal heuristic

Definition at line 1198 of file heur.c.

References NULL, and SCIP_Heur::usessubscip.

Referenced by SCIPparamsetSetToSubscipsOff().

int SCIPheurGetPriority ( SCIP_HEUR * heur )

gets priority of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1208 of file heur.c.

References NULL, and SCIP_Heur::priority.

Referenced by SCIP_DECL_DIALOGEXEC(), and SCIPprimalHeuristics().

void SCIPheurSetPriority	(	SCIP_HEUR *	heur,
		SCIP_SET *	set,
		int	priority
	)

sets priority of primal heuristic

Parameters

heur	primal heuristic
set	global SCIP settings
priority	new priority of the primal heuristic

Definition at line 1218 of file heur.c.

References FALSE, NULL, and SCIP_Heur::priority.

Referenced by SCIPsetHeurPriority().

int SCIPheurGetFreq ( SCIP_HEUR * heur )

gets frequency of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1232 of file heur.c.

References SCIP_Heur::freq, and NULL.

Referenced by checkParameters(), SCIP_DECL_DIALOGEXEC(), SCIP_DECL_HEURINIT(), and SCIP_DECL_HEURINITSOL().

void SCIPheurSetFreq	(	SCIP_HEUR *	heur,
		int	freq
	)

sets frequency of primal heuristic

Parameters

heur	primal heuristic
freq	new frequency of heuristic

Definition at line 1242 of file heur.c.

References SCIP_Heur::freq, and NULL.

Referenced by storeSolution().

int SCIPheurGetFreqofs ( SCIP_HEUR * heur )

gets frequency offset of primal heuristic

Parameters

heur	primal heuristic

Definition at line 1253 of file heur.c.

References SCIP_Heur::freqofs, and NULL.

Referenced by SCIP_DECL_DIALOGEXEC(), SCIP_DECL_HEURINIT(), and SCIP_DECL_HEURINITSOL().

int SCIPheurGetMaxdepth ( SCIP_HEUR * heur )

gets maximal depth level for calling primal heuristic (returns -1, if no depth limit exists)

Parameters

heur	primal heuristic

Definition at line 1263 of file heur.c.

References SCIP_Heur::maxdepth, and NULL.

SCIP_Longint SCIPheurGetNCalls ( SCIP_HEUR * heur )

gets the number of times, the heuristic was called and tried to find a solution

Parameters

heur	primal heuristic

Definition at line 1273 of file heur.c.

References SCIP_Heur::ncalls, and NULL.

Referenced by applyVbounds(), printHeuristicStatistics(), SCIP_DECL_HEUREXEC(), and SCIPapplyZeroobj().

SCIP_Longint SCIPheurGetNSolsFound ( SCIP_HEUR * heur )

gets the number of primal feasible solutions found by this heuristic

Parameters

heur	primal heuristic

Definition at line 1283 of file heur.c.

References SCIP_Heur::nsolsfound, and NULL.

Referenced by printHeuristicStatistics(), and SCIP_DECL_HEUREXEC().

SCIP_Longint SCIPheurGetNBestSolsFound ( SCIP_HEUR * heur )

gets the number of new best primal feasible solutions found by this heuristic

Parameters

heur	primal heuristic

Definition at line 1293 of file heur.c.

References SCIP_Heur::nbestsolsfound, and NULL.

Referenced by applyVbounds(), and SCIP_DECL_HEUREXEC().

SCIP_Bool SCIPheurIsInitialized ( SCIP_HEUR * heur )

is primal heuristic initialized?

Parameters

heur	primal heuristic

Definition at line 1303 of file heur.c.

References SCIP_Heur::initialized, and NULL.

void SCIPheurEnableOrDisableClocks	(	SCIP_HEUR *	heur,
		SCIP_Bool	enable
	)

enables or disables all clocks of heur, depending on the value of the flag

Parameters

heur	the heuristic for which all clocks should be enabled or disabled
enable	should the clocks of the heuristic be enabled?

Definition at line 1313 of file heur.c.

References SCIP_Heur::heurclock, NULL, SCIPclockEnableOrDisable(), and SCIP_Heur::setuptime.

Referenced by SCIPsetSetReoptimizationParams().

SCIP_Real SCIPheurGetSetupTime ( SCIP_HEUR * heur )

gets time in seconds used in this heuristic for setting up for next stages

Parameters

heur	primal heuristic

Definition at line 1325 of file heur.c.

References NULL, SCIPclockGetTime(), and SCIP_Heur::setuptime.

Referenced by printHeuristicStatistics().

SCIP_Real SCIPheurGetTime ( SCIP_HEUR * heur )

gets time in seconds used in this heuristic

Parameters

heur	primal heuristic

Definition at line 1335 of file heur.c.

References SCIP_Heur::heurclock, NULL, and SCIPclockGetTime().

Referenced by printHeuristicStatistics().

SCIP_DIVESET** SCIPheurGetDivesets ( SCIP_HEUR * heur )

returns array of divesets of this primal heuristic, or NULL if it has no divesets

Parameters

heur	primal heuristic

Definition at line 1345 of file heur.c.

References SCIP_Heur::divesets, and NULL.

Referenced by printHeuristicStatistics().

int SCIPheurGetNDivesets ( SCIP_HEUR * heur )

returns the number of divesets of this primal heuristic

Parameters

heur	primal heuristic

Definition at line 1355 of file heur.c.

References SCIP_Heur::ndivesets, and NULL.

Referenced by printHeuristicStatistics().

SCIP

Detailed Description

Functions

Function Documentation