Scippy

SCIP

Solving Constraint Integer Programs

struct_conflictstore.h
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2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB) */
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21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
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24 
25 /**@file struct_sepastore.h
26  * @ingroup INTERNALAPI
27  * @brief datastructures for storing conflicts
28  * @author Jakob Witzig
29  */
30 
31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32 
33 #ifndef __SCIP_STRUCT_CONFLICTSTORE_H__
34 #define __SCIP_STRUCT_CONFLICTSTORE_H__
35 
36 
37 #include "scip/def.h"
39 
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43 
44 /** storage for conflicts */
46 {
47  SCIP_EVENTHDLR* eventhdlr; /**< event handler to catch improving solutions */
48  SCIP_CONS** conflicts; /**< array with conflicts */
49  SCIP_CONS** dualrayconfs; /**< array with proofs based on dual rays */
50  SCIP_CONS** dualsolconfs; /**< array with proofs based on dual solutions */
51  SCIP_CONS** origconfs; /**< array of original conflicts added in stage SCIP_STAGE_PROBLEM */
52  SCIP_Real* confprimalbnds; /**< array of primal bounds valid at the time the corresponding bound exceeding
53  * conflict was found (-infinity if the conflict based on an infeasible LP) */
54  SCIP_Real* dualprimalbnds; /**< array of primal bounds valid at the time the corresponding dual proof
55  * based on a dual solution was found */
56  SCIP_Real* scalefactors; /**< scaling factor that needs to be considered when updating the side */
57  SCIP_Bool* updateside; /**< array to store whether the side should be updated whenever a new incumbent is found */
58  SCIP_Bool* drayrelaxonly; /**< array to store whether the dual proof is valid for the current relaxation only */
59  SCIP_Bool* dsolrelaxonly; /**< array to store whether the dual proof is valid for the current relaxation only */
60  SCIP_Real avgswitchlength; /**< average length of switched paths */
61  SCIP_Real lastcutoffbound; /**< last cutoff bound for which the conflict store was cleaned */
62  SCIP_Longint lastnodenum; /**< number of the last seen node */
63  SCIP_Longint ncleanups; /**< number of storage cleanups */
64  SCIP_Longint nnzdualrays; /**< number of non-zeros in all stored proofs based on dual rays */
65  SCIP_Longint nnzdualsols; /**< number of non-zeros in all stored proofs based on dual solutions */
66  int conflictsize; /**< size of conflict array (bounded by conflict->maxpoolsize) */
67  int origconflictsize; /**< size of origconfs array */
68  int nconflicts; /**< number of stored conflicts */
69  int ndualrayconfs; /**< number of stored proofs based on dual rays */
70  int ndualsolconfs; /**< number of stored proofs based on dual solutions */
71  int norigconfs; /**< number of original conflicts */
72  int ncbconflicts; /**< number of conflicts depending on cutoff bound */
73  int nconflictsfound; /**< total number of conflicts found so far */
74  int cleanupfreq; /**< frequency to cleanup the storage if the storage is not full */
75  int nswitches; /**< number of path switches */
76  int initstoresize; /**< initial size of the storage (different to maxstoresize iff dynamic) */
77  int storesize; /**< current size of the storage (different to maxstoresize iff dynamic) */
78  int maxstoresize; /**< maximal size of the storage */
79 };
80 
81 #ifdef __cplusplus
82 }
83 #endif
84 
85 #endif
type definitions for conflict store
SCIP_EVENTHDLR * eventhdlr
#define SCIP_Bool
Definition: def.h:93
#define SCIP_Real
Definition: def.h:186
#define SCIP_Longint
Definition: def.h:171
common defines and data types used in all packages of SCIP