1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 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) */ 7 /* */ 8 /* Licensed under the Apache License, Version 2.0 (the "License"); */ 9 /* you may not use this file except in compliance with the License. */ 10 /* You may obtain a copy of the License at */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 20 /* You should have received a copy of the Apache-2.0 license */ 21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */ 22 /* */ 23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 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" 38 #include "scip/type_conflictstore.h" 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 /** storage for conflicts */ 45 struct SCIP_ConflictStore 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 86