cons_superindicator.c File Reference

Detailed Description

constraint handler for indicator constraints over arbitrary constraint types

Author

Ambros Gleixner

Frederic Pythoud

Definition in file cons_superindicator.c.

#include <assert.h>
#include <string.h>
#include "scip/cons_superindicator.h"
#include "scip/dialog_default.h"
#include "scip/cons_indicator.h"
#include "scip/cons_linear.h"

Go to the source code of this file.

Macros
#define	CONSHDLR_NAME   "superindicator"
#define	CONSHDLR_DESC   "constraint handler for indicator constraints over arbitrary constraint types"
#define	CONSHDLR_SEPAPRIORITY   0
#define	CONSHDLR_ENFOPRIORITY   -5000000
#define	CONSHDLR_CHECKPRIORITY   -5000000
#define	CONSHDLR_SEPAFREQ   -1
#define	CONSHDLR_PROPFREQ   1
#define	CONSHDLR_EAGERFREQ   100
#define	CONSHDLR_MAXPREROUNDS   -1
#define	CONSHDLR_DELAYSEPA   FALSE
#define	CONSHDLR_DELAYPROP   FALSE
#define	CONSHDLR_NEEDSCONS   TRUE
#define	CONSHDLR_PROP_TIMING   SCIP_PROPTIMING_BEFORELP
#define	CONSHDLR_PRESOLTIMING   SCIP_PRESOLTIMING_MEDIUM
#define	DEFAULT_CHECKSLACKTYPE   TRUE
#define	DEFAULT_UPGDPRIOINDICATOR   1
#define	DEFAULT_UPGDPRIOLINEAR   2
#define	DEFAULT_MAXUPGDCOEFLINEAR   1e4

Functions
static SCIP_RETCODE	consdataCreateSuperindicator (SCIP *scip, SCIP_CONSDATA **consdata, SCIP_VAR *binvar, SCIP_CONS *slackcons)
static SCIP_RETCODE	consdataCheckSuperindicator (SCIP *scip, SCIP_CONSDATA *consdata, SCIP_SOL *sol, SCIP_Bool checkintegrality, SCIP_Bool checklprows, SCIP_Bool printreason, SCIP_RESULT *result)
static SCIP_RETCODE	extractLinearValues (SCIP *scip, SCIP_CONS *cons, SCIP_Real *minactivity, SCIP_Real *maxactivity, SCIP_Real *minabscoef)
static SCIP_RETCODE	upgradeIndicatorSuperindicator (SCIP *scip, SCIP_CONS *cons, SCIP_Bool *success, SCIP_Bool *deleted)
static SCIP_RETCODE	upgradeLinearSuperindicator (SCIP *scip, SCIP_CONS *cons, SCIP_Bool *success, SCIP_Bool *deleted)
static SCIP_RETCODE	upgradeSuperindicator (SCIP *scip, SCIP_CONS *cons, SCIP_Bool *success, SCIP_Bool *deleted)
static	SCIP_DECL_CONSHDLRCOPY (conshdlrCopySuperindicator)
static	SCIP_DECL_CONSFREE (consFreeSuperindicator)
static	SCIP_DECL_CONSINITPRE (consInitpreSuperindicator)
static	SCIP_DECL_CONSDELETE (consDeleteSuperindicator)
static	SCIP_DECL_CONSTRANS (consTransSuperindicator)
static	SCIP_DECL_CONSINITLP (consInitlpSuperindicator)
static	SCIP_DECL_CONSSEPALP (consSepalpSuperindicator)
static	SCIP_DECL_CONSSEPASOL (consSepasolSuperindicator)
static	SCIP_DECL_CONSENFOLP (consEnfolpSuperindicator)
static	SCIP_DECL_CONSENFOPS (consEnfopsSuperindicator)
static	SCIP_DECL_CONSCHECK (consCheckSuperindicator)
static	SCIP_DECL_CONSPROP (consPropSuperindicator)
static	SCIP_DECL_CONSPRESOL (consPresolSuperindicator)
static	SCIP_DECL_CONSRESPROP (consRespropSuperindicator)
static	SCIP_DECL_CONSLOCK (consLockSuperindicator)
static	SCIP_DECL_CONSPRINT (consPrintSuperindicator)
static	SCIP_DECL_CONSCOPY (consCopySuperindicator)
static	SCIP_DECL_CONSPARSE (consParseSuperindicator)
static	SCIP_DECL_CONSGETVARS (consGetVarsSuperindicator)
static	SCIP_DECL_CONSGETNVARS (consGetNVarsSuperindicator)
SCIP_RETCODE	SCIPincludeConshdlrSuperindicator (SCIP *scip)
SCIP_RETCODE	SCIPcreateConsSuperindicator (SCIP *scip, SCIP_CONS **cons, const char *name, SCIP_VAR *binvar, SCIP_CONS *slackcons, SCIP_Bool initial, SCIP_Bool separate, SCIP_Bool enforce, SCIP_Bool check, SCIP_Bool propagate, SCIP_Bool local, SCIP_Bool dynamic, SCIP_Bool removable, SCIP_Bool stickingatnode)
SCIP_RETCODE	SCIPcreateConsBasicSuperindicator (SCIP *scip, SCIP_CONS **cons, const char *name, SCIP_VAR *binvar, SCIP_CONS *slackcons)
SCIP_VAR *	SCIPgetBinaryVarSuperindicator (SCIP_CONS *cons)
SCIP_CONS *	SCIPgetSlackConsSuperindicator (SCIP_CONS *cons)
SCIP_RETCODE	SCIPtransformMinUC (SCIP *scip, SCIP_Bool *success)
	SCIP_DECL_DIALOGEXEC (SCIPdialogExecChangeMinUC)

Macro Definition Documentation

#define CONSHDLR_NAME   "superindicator"

Definition at line 44 of file cons_superindicator.c.

Referenced by SCIPcreateConsSuperindicator(), SCIPgetBinaryVarSuperindicator(), SCIPgetSlackConsSuperindicator(), and SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_DESC   "constraint handler for indicator constraints over arbitrary constraint types"

Definition at line 45 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_SEPAPRIORITY   0

priority of the constraint handler for separation

Definition at line 46 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_ENFOPRIORITY   -5000000

priority of the constraint handler for constraint enforcing

Definition at line 47 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_CHECKPRIORITY   -5000000

priority of the constraint handler for checking feasibility

Definition at line 48 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_SEPAFREQ   -1

frequency for separating cuts; zero means to separate only in the root node

Definition at line 49 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_PROPFREQ   1

frequency for propagating domains; zero means only preprocessing propagation

Definition at line 50 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_EAGERFREQ   100

frequency for using all instead of only the useful constraints in separation, propagation and enforcement, -1 for no eager evaluations, 0 for first only

Definition at line 51 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_MAXPREROUNDS   -1

maximal number of presolving rounds the constraint handler participates in (-1: no limit)

Definition at line 54 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_DELAYSEPA   FALSE

should separation method be delayed, if other separators found cuts?

Definition at line 57 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_DELAYPROP   FALSE

should propagation method be delayed, if other propagators found reductions?

Definition at line 58 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_NEEDSCONS   TRUE

should the constraint handler be skipped, if no constraints are available?

Definition at line 59 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_PROP_TIMING   SCIP_PROPTIMING_BEFORELP

propagation timing mask of the constraint handler

Definition at line 61 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define CONSHDLR_PRESOLTIMING   SCIP_PRESOLTIMING_MEDIUM

presolving timing of the constraint handler (fast, medium, or exhaustive)

Definition at line 62 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define DEFAULT_CHECKSLACKTYPE   TRUE

should type of slack constraint be checked when creating superindicator constraint?

Definition at line 64 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define DEFAULT_UPGDPRIOINDICATOR   1

priority for upgrading to an indicator constraint (-1: never)

Definition at line 65 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define DEFAULT_UPGDPRIOLINEAR   2

priority for upgrading to a linear constraint (-1: never)

Definition at line 66 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

#define DEFAULT_MAXUPGDCOEFLINEAR   1e4

maximum big-M coefficient of binary variable in upgrade to a linear constraint (relative to smallest coefficient)

Definition at line 67 of file cons_superindicator.c.

Referenced by SCIPincludeConshdlrSuperindicator().

Function Documentation

static SCIP_RETCODE consdataCreateSuperindicator ( SCIP *  scip, SCIP_CONSDATA **  consdata, SCIP_VAR *  binvar, SCIP_CONS *  slackcons  )

static

creates superindicator constraint data

Parameters

scip	SCIP data structure
consdata	pointer to constraint data
binvar	binary variable
slackcons	slack constraint

Definition at line 100 of file cons_superindicator.c.

References consdataCheckSuperindicator(), NULL, SCIP_CALL, SCIP_OKAY, SCIPallocBlockMemory, SCIPcaptureCons(), SCIPdebugMessage, SCIPgetTransformedVar(), SCIPisTransformed(), and SCIPtransformCons().

Referenced by SCIPcreateConsSuperindicator().

static SCIP_RETCODE consdataCheckSuperindicator ( SCIP *  scip, SCIP_CONSDATA *  consdata, SCIP_SOL *  sol, SCIP_Bool  checkintegrality, SCIP_Bool  checklprows, SCIP_Bool  printreason, SCIP_RESULT *  result  )

static

checks the feasibility of a superindicator constraint

Parameters

scip	SCIP data structure
consdata	pointer to superindicator constraint data
sol	pointer to the solution to be checked
checkintegrality	Has integrality to be checked?
checklprows	Do constraints represented by rows in the current LP have to be checked?
printreason	Should the reason for the violation be printed?
result	pointer to store the result of the test

Definition at line 139 of file cons_superindicator.c.

References extractLinearValues(), NULL, SCIP_CALL, SCIP_DIDNOTRUN, SCIP_FEASIBLE, SCIP_INFEASIBLE, SCIP_OKAY, SCIP_Real, SCIPcheckCons(), SCIPconsGetName(), SCIPdebugMessage, SCIPgetSolVal(), SCIPinfoMessage(), SCIPisFeasEQ(), SCIPisIntegral(), SCIPvarGetName(), and TRUE.

Referenced by consdataCreateSuperindicator().

static SCIP_RETCODE extractLinearValues ( SCIP *  scip, SCIP_CONS *  cons, SCIP_Real *  minactivity, SCIP_Real *  maxactivity, SCIP_Real *  minabscoef  )

static

computes the minactivity, maxactivity, and minimal absolute value of nonzero coefficients of a linear constraint with respect to its global bounds

Parameters

scip	SCIP data structure
cons	pointer to linear constraint
minactivity	pointer to return the minimal activity
maxactivity	pointer to return the maximal activity
minabscoef	pointer to return the minimal absolute value of the coefficients

Definition at line 210 of file cons_superindicator.c.

References FALSE, NULL, SCIP_Bool, SCIP_OKAY, SCIP_Real, SCIPconsGetHdlr(), SCIPconshdlrGetName(), SCIPgetNVarsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPinfinity(), SCIPisInfinity(), SCIPvarGetLbGlobal(), SCIPvarGetUbGlobal(), and upgradeIndicatorSuperindicator().

Referenced by consdataCheckSuperindicator(), and upgradeLinearSuperindicator().

static SCIP_RETCODE upgradeIndicatorSuperindicator ( SCIP *  scip, SCIP_CONS *  cons, SCIP_Bool *  success, SCIP_Bool *  deleted  )

static

tries to upgrade superindicator constraint to an indicator constraint

Parameters

scip	SCIP data structure
cons	superindicator constraint to be upgraded
success	pointer to store if the upgrading was successful
deleted	pointer to store if the constraint was deleted

Definition at line 289 of file cons_superindicator.c.

References FALSE, NULL, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIPaddCons(), SCIPallocBufferArray, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsChecked(), SCIPconsIsDynamic(), SCIPconsIsEnforced(), SCIPconsIsInitial(), SCIPconsIsLocal(), SCIPconsIsPropagated(), SCIPconsIsRemovable(), SCIPconsIsSeparated(), SCIPconsIsStickingAtNode(), SCIPcreateConsIndicator(), SCIPdebug, SCIPdebugMessage, SCIPdelCons(), SCIPfindConshdlr(), SCIPfreeBufferArray, SCIPgetLhsLinear(), SCIPgetNVarsLinear(), SCIPgetRhsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPisInfinity(), SCIPreleaseCons(), SCIPsnprintf(), TRUE, and upgradeLinearSuperindicator().

Referenced by extractLinearValues(), and upgradeSuperindicator().

static SCIP_RETCODE upgradeLinearSuperindicator ( SCIP *  scip, SCIP_CONS *  cons, SCIP_Bool *  success, SCIP_Bool *  deleted  )

static

upgrades a superindicator constraint to a linear constraint if possible

Parameters

scip	SCIP data structure
cons	superindicator constraint to be upgraded
success	pointer to store if the upgrading was successful
deleted	pointer to store if the constraint was deleted

Definition at line 405 of file cons_superindicator.c.

References extractLinearValues(), FALSE, NULL, SCIP_CALL, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_Real, SCIPaddCons(), SCIPallocBufferArray, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetData(), SCIPconshdlrGetName(), SCIPconsIsChecked(), SCIPconsIsDynamic(), SCIPconsIsEnforced(), SCIPconsIsInitial(), SCIPconsIsLocal(), SCIPconsIsModifiable(), SCIPconsIsPropagated(), SCIPconsIsRemovable(), SCIPconsIsSeparated(), SCIPconsIsStickingAtNode(), SCIPcreateConsLinear(), SCIPdebug, SCIPdebugMessage, SCIPdelCons(), SCIPfindConshdlr(), SCIPfreeBufferArray, SCIPgetLhsLinear(), SCIPgetNVarsLinear(), SCIPgetRhsLinear(), SCIPgetValsLinear(), SCIPgetVarsLinear(), SCIPinfinity(), SCIPisGE(), SCIPisInfinity(), SCIPisLE(), SCIPisNegative(), SCIPisPositive(), SCIPreleaseCons(), SCIPsnprintf(), TRUE, and upgradeSuperindicator().

Referenced by upgradeIndicatorSuperindicator(), and upgradeSuperindicator().

static SCIP_RETCODE upgradeSuperindicator ( SCIP *  scip, SCIP_CONS *  cons, SCIP_Bool *  success, SCIP_Bool *  deleted  )

static

tries to upgrade a superindicator constraint in order of the upgrade priority parameters

Parameters

scip	SCIP data structure
cons	superindicator constraint to be updated
success	pointer to store if the constraint was upgraded
deleted	pointer to store if the constraint was deleted

Definition at line 608 of file cons_superindicator.c.

References FALSE, NULL, SCIP_CALL, SCIP_DECL_CONSHDLRCOPY(), SCIP_OKAY, SCIPconsGetHdlr(), SCIPconshdlrGetData(), upgradeIndicatorSuperindicator(), and upgradeLinearSuperindicator().

Referenced by upgradeLinearSuperindicator().

static SCIP_DECL_CONSHDLRCOPY ( conshdlrCopySuperindicator  )

static

copy method for constraint handler plugins (called when SCIP copies plugins)

Definition at line 660 of file cons_superindicator.c.

Referenced by upgradeSuperindicator().

static SCIP_DECL_CONSFREE ( consFreeSuperindicator  )

static

destructor of constraint handler to free constraint handler data (called when SCIP is exiting)

Definition at line 676 of file cons_superindicator.c.

static SCIP_DECL_CONSINITPRE ( consInitpreSuperindicator  )

static

presolving initialization method of constraint handler (called when presolving is about to begin)

Definition at line 699 of file cons_superindicator.c.

static SCIP_DECL_CONSDELETE ( consDeleteSuperindicator  )

static

frees specific constraint data

Definition at line 720 of file cons_superindicator.c.

static SCIP_DECL_CONSTRANS ( consTransSuperindicator  )

static

transforms constraint data into data belonging to the transformed problem

Definition at line 743 of file cons_superindicator.c.

static SCIP_DECL_CONSINITLP ( consInitlpSuperindicator  )

static

LP initialization method of constraint handler

Definition at line 770 of file cons_superindicator.c.

static SCIP_DECL_CONSSEPALP ( consSepalpSuperindicator  )

static

separation method of constraint handler for LP solutions

Definition at line 804 of file cons_superindicator.c.

static SCIP_DECL_CONSSEPASOL ( consSepasolSuperindicator  )

static

separation method of constraint handler for arbitrary primal solutions

Definition at line 913 of file cons_superindicator.c.

static SCIP_DECL_CONSENFOLP ( consEnfolpSuperindicator  )

static

constraint enforcing method of constraint handler for LP solutions

Definition at line 1023 of file cons_superindicator.c.

static SCIP_DECL_CONSENFOPS ( consEnfopsSuperindicator  )

static

constraint enforcing method of constraint handler for pseudo solutions

Definition at line 1133 of file cons_superindicator.c.

static SCIP_DECL_CONSCHECK ( consCheckSuperindicator  )

static

feasibility check method of constraint handler for integral solutions

Definition at line 1267 of file cons_superindicator.c.

static SCIP_DECL_CONSPROP ( consPropSuperindicator  )

static

domain propagation method of constraint handler

Definition at line 1295 of file cons_superindicator.c.

static SCIP_DECL_CONSPRESOL ( consPresolSuperindicator  )

static

presolving method of constraint handler

Definition at line 1388 of file cons_superindicator.c.

static SCIP_DECL_CONSRESPROP ( consRespropSuperindicator  )

static

propagation conflict resolving method of constraint handler

Definition at line 1501 of file cons_superindicator.c.

static SCIP_DECL_CONSLOCK ( consLockSuperindicator  )

static

variable rounding lock method of constraint handler

Definition at line 1534 of file cons_superindicator.c.

static SCIP_DECL_CONSPRINT ( consPrintSuperindicator  )

static

constraint display method of constraint handler

Definition at line 1557 of file cons_superindicator.c.

static SCIP_DECL_CONSCOPY ( consCopySuperindicator  )

static

constraint copying method of constraint handler

Definition at line 1599 of file cons_superindicator.c.

static SCIP_DECL_CONSPARSE ( consParseSuperindicator  )

static

constraint parsing method of constraint handler

Definition at line 1718 of file cons_superindicator.c.

static SCIP_DECL_CONSGETVARS ( consGetVarsSuperindicator  )

static

constraint method of constraint handler which returns the variables (if possible)

Definition at line 1809 of file cons_superindicator.c.

static SCIP_DECL_CONSGETNVARS ( consGetNVarsSuperindicator  )

static

constraint method of constraint handler which returns the number of variables (if possible)

Definition at line 1833 of file cons_superindicator.c.

SCIP_RETCODE SCIPincludeConshdlrSuperindicator

(

SCIP *

scip

)

creates the handler for superindicator constraints and includes it in SCIP

Parameters

scip	SCIP data structure

Definition at line 1856 of file cons_superindicator.c.

References CONSHDLR_CHECKPRIORITY, CONSHDLR_DELAYPROP, CONSHDLR_DELAYSEPA, CONSHDLR_DESC, CONSHDLR_EAGERFREQ, CONSHDLR_ENFOPRIORITY, CONSHDLR_MAXPREROUNDS, CONSHDLR_NAME, CONSHDLR_NEEDSCONS, CONSHDLR_PRESOLTIMING, CONSHDLR_PROP_TIMING, CONSHDLR_PROPFREQ, CONSHDLR_SEPAFREQ, CONSHDLR_SEPAPRIORITY, DEFAULT_CHECKSLACKTYPE, DEFAULT_MAXUPGDCOEFLINEAR, DEFAULT_UPGDPRIOINDICATOR, DEFAULT_UPGDPRIOLINEAR, FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPaddBoolParam(), SCIPaddDialogEntry(), SCIPaddIntParam(), SCIPaddRealParam(), SCIPallocMemory, SCIPcreateConsSuperindicator(), SCIPdialogFindEntry(), SCIPdialogHasEntry(), SCIPerrorMessage, SCIPgetRootDialog(), SCIPincludeConshdlrBasic(), SCIPincludeDialog(), SCIPincludeDialogDefault(), SCIPreleaseDialog(), SCIPsetConshdlrCopy(), SCIPsetConshdlrDelete(), SCIPsetConshdlrFree(), SCIPsetConshdlrGetNVars(), SCIPsetConshdlrGetVars(), SCIPsetConshdlrInitlp(), SCIPsetConshdlrInitpre(), SCIPsetConshdlrParse(), SCIPsetConshdlrPresol(), SCIPsetConshdlrPrint(), SCIPsetConshdlrProp(), SCIPsetConshdlrResprop(), SCIPsetConshdlrSepa(), SCIPsetConshdlrTrans(), and TRUE.

Referenced by SCIPincludeDefaultPlugins().

SCIP_RETCODE SCIPcreateConsSuperindicator	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_VAR *	binvar,
		SCIP_CONS *	slackcons,
		SCIP_Bool	initial,
		SCIP_Bool	separate,
		SCIP_Bool	enforce,
		SCIP_Bool	check,
		SCIP_Bool	propagate,
		SCIP_Bool	local,
		SCIP_Bool	dynamic,
		SCIP_Bool	removable,
		SCIP_Bool	stickingatnode
	)

creates and captures a superindicator constraint

Note

the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
binvar	pointer to the indicator constraint
slackcons	constraint corresponding to the handled constraint
initial	should the LP relaxation of constraint be in the initial LP? Usually set to TRUE. Set to FALSE for 'lazy constraints'.
separate	should the constraint be separated during LP processing? Usually set to TRUE.
enforce	should the constraint be enforced during node processing? TRUE for model constraints, FALSE for additional, redundant constraints.
check	should the constraint be checked for feasibility? TRUE for model constraints, FALSE for additional, redundant constraints.
propagate	should the constraint be propagated during node processing? Usually set to TRUE.
local	is constraint only valid locally? Usually set to FALSE. Has to be set to TRUE, e.g., for branching constraints.
dynamic	is constraint subject to aging? Usually set to FALSE. Set to TRUE for own cuts which are separated as constraints.
removable	should the relaxation be removed from the LP due to aging or cleanup? Usually set to FALSE. Set to TRUE for 'lazy constraints' and 'user cuts'.
stickingatnode	should the constraint always be kept at the node where it was added, even if it may be moved to a more global node? Usually set to FALSE. Set to TRUE to for constraints that represent node data.

Definition at line 1958 of file cons_superindicator.c.

References consdataCreateSuperindicator(), CONSHDLR_NAME, FALSE, NULL, SCIP_Bool, SCIP_CALL, SCIP_INVALIDCALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetData(), SCIPconshdlrGetName(), SCIPcreateCons(), SCIPcreateConsBasicSuperindicator(), SCIPerrorMessage, SCIPfindConshdlr(), and SCIPwarningMessage().

Referenced by SCIPcreateConsBasicSuperindicator(), SCIPincludeConshdlrSuperindicator(), and SCIPtransformMinUC().

SCIP_RETCODE SCIPcreateConsBasicSuperindicator	(	SCIP *	scip,
		SCIP_CONS **	cons,
		const char *	name,
		SCIP_VAR *	binvar,
		SCIP_CONS *	slackcons
	)

creates and captures a superindicator constraint in its most basic version, i. e., all constraint flags are set to their basic value as explained for the method SCIPcreateConsSuperindicator(); all flags can be set via SCIPsetConsFLAGNAME-methods in scip.h

See also

SCIPcreateConsSuperindicator() for information about the basic constraint flag configuration

Note

the constraint gets captured, hence at one point you have to release it using the method SCIPreleaseCons()

Parameters

scip	SCIP data structure
cons	pointer to hold the created constraint
name	name of constraint
binvar	pointer to the indicator constraint
slackcons	constraint corresponding to the handled constraint

Definition at line 2069 of file cons_superindicator.c.

References FALSE, NULL, SCIP_CALL, SCIP_OKAY, SCIPcreateConsSuperindicator(), SCIPgetBinaryVarSuperindicator(), and TRUE.

Referenced by SCIPcreateConsSuperindicator().

SCIP_VAR* SCIPgetBinaryVarSuperindicator

(

SCIP_CONS *

cons

)

gets binary variable corresponding to the general indicator constraint

Parameters

cons	superindicator constraint

Definition at line 2091 of file cons_superindicator.c.

References CONSHDLR_NAME, NULL, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPgetSlackConsSuperindicator().

Referenced by SCIPcreateConsBasicSuperindicator().

SCIP_CONS* SCIPgetSlackConsSuperindicator

(

SCIP_CONS *

cons

)

gets the slack constraint corresponding to the general indicator constraint

Parameters

cons	superindicator constraint

Definition at line 2103 of file cons_superindicator.c.

References CONSHDLR_NAME, NULL, SCIP_Bool, SCIPconsGetData(), SCIPconsGetHdlr(), SCIPconshdlrGetName(), and SCIPtransformMinUC().

Referenced by SCIPgetBinaryVarSuperindicator().

SCIP_RETCODE SCIPtransformMinUC	(	SCIP *	scip,
		SCIP_Bool *	success
	)

transforms the current problem into a MinUC problem (minimizing the number of unsatisfied constraints), a CIP generalization of the MinULR (min. unsatisfied linear relations) problem

Parameters

scip	SCIP data structure
success	pointer to store whether all constraints could be transformed

Definition at line 2122 of file cons_superindicator.c.

References BMSduplicateMemoryArray, BMSfreeMemoryArray, FALSE, NULL, SCIP_ALLOC, SCIP_Bool, SCIP_CALL, SCIP_DECL_DIALOGEXEC(), SCIP_INVALIDCALL, SCIP_MAXSTRLEN, SCIP_OBJSENSE_MINIMIZE, SCIP_OKAY, SCIP_STAGE_PROBLEM, SCIP_VARTYPE_BINARY, SCIPaddCons(), SCIPaddVar(), SCIPchgVarBranchPriority(), SCIPchgVarObj(), SCIPconsGetHdlr(), SCIPconsGetName(), SCIPconshdlrGetName(), SCIPconsIsChecked(), SCIPconsIsDynamic(), SCIPconsIsEnforced(), SCIPconsIsInitial(), SCIPconsIsLocal(), SCIPconsIsPropagated(), SCIPconsIsRemovable(), SCIPconsIsSeparated(), SCIPconsIsStickingAtNode(), SCIPcreateConsSuperindicator(), SCIPcreateVar(), SCIPdebugMessage, SCIPdelCons(), SCIPerrorMessage, SCIPgetConss(), SCIPgetNConss(), SCIPgetNegatedVar(), SCIPgetStage(), SCIPgetVarsData(), SCIPreleaseCons(), SCIPreleaseVar(), SCIPsetObjsense(), SCIPsnprintf(), SCIPvarGetBranchPriority(), and TRUE.

Referenced by SCIPgetSlackConsSuperindicator().

SCIP_DECL_DIALOGEXEC

(

SCIPdialogExecChangeMinUC

)

dialog execution method for the SCIPtransformMinUC() method

Definition at line 2256 of file cons_superindicator.c.

Referenced by SCIPtransformMinUC().