Scippy

SCIP

Solving Constraint Integer Programs

scip_reopt.c
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (C) 2002-2022 Konrad-Zuse-Zentrum */
7 /* fuer Informationstechnik Berlin */
8 /* */
9 /* SCIP is distributed under the terms of the ZIB Academic License. */
10 /* */
11 /* You should have received a copy of the ZIB Academic License */
12 /* along with SCIP; see the file COPYING. If not visit scipopt.org. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file scip_reopt.c
17  * @ingroup OTHER_CFILES
18  * @brief public methods for reoptimization
19  * @author Tobias Achterberg
20  * @author Timo Berthold
21  * @author Gerald Gamrath
22  * @author Leona Gottwald
23  * @author Stefan Heinz
24  * @author Gregor Hendel
25  * @author Thorsten Koch
26  * @author Alexander Martin
27  * @author Marc Pfetsch
28  * @author Michael Winkler
29  * @author Kati Wolter
30  *
31  * @todo check all SCIP_STAGE_* switches, and include the new stages TRANSFORMED and INITSOLVE
32  */
33 
34 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
35 
36 #include "scip/debug.h"
37 #include "scip/pub_message.h"
38 #include "scip/pub_reopt.h"
39 #include "scip/pub_tree.h"
40 #include "scip/reopt.h"
41 #include "scip/scip_mem.h"
42 #include "scip/scip_reopt.h"
43 #include "scip/scip_tree.h"
44 #include "scip/struct_mem.h"
45 #include "scip/struct_prob.h"
46 #include "scip/struct_scip.h"
47 #include "scip/struct_set.h"
48 #include "scip/struct_stat.h"
49 
50 /** return the ids of child nodes stored in the reoptimization tree
51  *
52  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
53  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
54  *
55  * @pre This method can be called if @p scip is in one of the following stages:
56  * - \ref SCIP_STAGE_PRESOLVED
57  * - \ref SCIP_STAGE_SOLVING
58  * - \ref SCIP_STAGE_SOLVED
59  */
61  SCIP* scip, /**< SCIP data structure */
62  SCIP_NODE* node, /**< node of the search tree */
63  unsigned int* ids, /**< array of ids */
64  int idssize, /**< allocated memory */
65  int* nids /**< number of child nodes */
66  )
67 {
68  assert(scip != NULL);
69 
70  SCIP_CALL( SCIPcheckStage(scip, "SCIPgetReoptChildIDs", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, FALSE, FALSE, FALSE) );
71 
72  (*nids) = 0;
73 
74  if( !scip->set->reopt_enable )
75  return SCIP_OKAY;
76 
77  SCIP_CALL( SCIPreoptGetChildIDs(scip->reopt, scip->set, scip->mem->probmem, node, ids, idssize, nids) );
78 
79  return SCIP_OKAY;
80 }
81 
82 /** return the ids of all leave nodes store in the reoptimization tree induced by the given node
83  *
84  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
85  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
86  *
87  * @pre This method can be called if @p scip is in one of the following stages:
88  * - \ref SCIP_STAGE_PRESOLVED
89  * - \ref SCIP_STAGE_SOLVING
90  * - \ref SCIP_STAGE_SOLVED
91  */
93  SCIP* scip, /**< SCIP data structure */
94  SCIP_NODE* node, /**< node of the search tree */
95  unsigned int* ids, /**< array of ids */
96  int idssize, /**< size of ids array */
97  int* nids /**< number of child nodes */
98  )
99 {
100  assert(scip != NULL);
101 
102  SCIP_CALL( SCIPcheckStage(scip, "SCIPgetReoptLeaveIDs", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, FALSE, FALSE, FALSE) );
103 
104  (*nids) = 0;
105 
106  if( idssize == 0 || !scip->set->reopt_enable )
107  return SCIP_OKAY;
108 
109  SCIP_CALL( SCIPreoptGetLeaves(scip->reopt, node, ids, idssize, nids) );
110 
111  return SCIP_OKAY;
112 }
113 
114 /** returns the number of nodes in the reoptimization tree induced by @p node; if @p node == NULL the method
115  * returns the number of nodes of the whole reoptimization tree.
116  */
118  SCIP* scip, /**< SCIP data structure */
119  SCIP_NODE* node /**< node of the search tree */
120  )
121 {
122  assert(scip != NULL);
123  assert(scip->set->reopt_enable);
124  assert(scip->reopt != NULL);
125 
126  return SCIPreoptGetNNodes(scip->reopt, node);
127 }
128 
129 /** returns the number of leaf nodes of the subtree induced by @p node; if @p node == NULL, the method
130  * returns the number of leaf nodes of the whole reoptimization tree.
131  */
133  SCIP* scip, /**< SCIP data structure */
134  SCIP_NODE* node /**< node of the search tree */
135  )
136 {
137  assert(scip != NULL);
138  assert(scip->set->reopt_enable);
139  assert(scip->reopt != NULL);
140 
141  return SCIPreoptGetNLeaves(scip->reopt, node);
142 }
143 
144 /** gets the node of the reoptimization tree corresponding to the unique @p id */
146  SCIP* scip, /**< SCIP data structure */
147  unsigned int id /**< unique id */
148  )
149 {
150  assert(scip != NULL);
151  assert(scip->set->reopt_enable);
152  assert(scip->reopt != NULL);
153 
154  return SCIPreoptGetReoptnode(scip->reopt, id);
155 }
156 
157 /** add a variable bound change to a given reoptnode
158  *
159  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
160  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
161  *
162  * @pre This method can be called if @p scip is in one of the following stages:
163  * - \ref SCIP_STAGE_PRESOLVED
164  * - \ref SCIP_STAGE_SOLVING
165  * - \ref SCIP_STAGE_SOLVED
166  */
168  SCIP* scip, /**< SCIP data structure */
169  SCIP_REOPTNODE* reoptnode, /**< node of the reoptimization tree */
170  SCIP_VAR* var, /**< variable pointer */
171  SCIP_Real bound, /**< variable bound to add */
172  SCIP_BOUNDTYPE boundtype /**< bound type of the variable value */
173  )
174 {
175  assert(scip != NULL);
176  assert(reoptnode != NULL);
177  assert(scip->set->reopt_enable);
178  assert(scip->reopt != NULL);
179 
180  SCIP_CALL( SCIPcheckStage(scip, "SCIPaddReoptnodeBndchg", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, FALSE, FALSE, FALSE) );
181 
182  SCIP_CALL( SCIPreoptnodeAddBndchg(reoptnode, scip->set, scip->mem->probmem, var, bound, boundtype) );
183 
184  return SCIP_OKAY;
185 }
186 
187 /** set the @p representation as the new search frontier
188  *
189  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
190  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
191  *
192  * @pre This method can be called if @p scip is in one of the following stages:
193  * - \ref SCIP_STAGE_PRESOLVED
194  */
196  SCIP* scip, /**< SCIP data structure */
197  SCIP_REOPTNODE** representation, /**< array of representatives */
198  int nrepresentatives, /**< number of representatives */
199  SCIP_Bool* success /**< pointer to store the result */
200  )
201 {
202  assert(scip != NULL);
203  assert(representation != NULL);
204  assert(nrepresentatives > 0);
205  assert(scip->set->reopt_enable);
206  assert(scip->reopt != NULL);
207 
208  SCIP_CALL( SCIPcheckStage(scip, "SCIPsetReoptCompression", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE) );
209 
210  SCIP_CALL( SCIPreoptApplyCompression(scip->reopt, scip->set, scip->mem->probmem, representation, nrepresentatives, success) );
211 
212  return SCIP_OKAY;
213 }
214 
215 /** add stored constraint to a reoptimization node
216  *
217  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
218  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
219  *
220  * @pre This method can be called if @p scip is in one of the following stages:
221  * - \ref SCIP_STAGE_PRESOLVED
222  */
224  SCIP* scip, /**< SCIP data structure */
225  SCIP_REOPTNODE* reoptnode, /**< node of the reoptimization tree */
226  SCIP_VAR** vars, /**< array of variables */
227  SCIP_Real* vals, /**< array of variable bounds */
228  SCIP_BOUNDTYPE* boundtypes, /**< array of variable boundtypes */
229  SCIP_Real lhs, /**< lhs of the constraint */
230  SCIP_Real rhs, /**< rhs of the constraint */
231  int nvars, /**< number of variables */
232  REOPT_CONSTYPE constype, /**< type of the constraint */
233  SCIP_Bool linear /**< the given constraint has a linear representation */
234  )
235 {
236  assert(scip != NULL);
237  assert(reoptnode != NULL);
238  assert(vars != NULL);
239  assert(vals != NULL);
240  assert(nvars >= 0);
241 
242  SCIP_CALL( SCIPcheckStage(scip, "SCIPaddReoptnodeCons", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE) );
243 
244  SCIP_CALL( SCIPreoptnodeAddCons(reoptnode, scip->set, scip->mem->probmem, vars, vals, boundtypes, lhs, rhs, nvars,
245  constype, linear) );
246 
247  return SCIP_OKAY;
248 }
249 
250 /** return the branching path stored in the reoptree at ID id */
252  SCIP* scip, /**< SCIP data structure */
253  SCIP_REOPTNODE* reoptnode, /**< node of the reoptimization tree */
254  SCIP_VAR** vars, /**< array of variables */
255  SCIP_Real* vals, /**< array of variable bounds */
256  SCIP_BOUNDTYPE* boundtypes, /**< array of bound types */
257  int mem, /**< allocated memory */
258  int* nvars, /**< number of variables */
259  int* nafterdualvars /**< number of variables directly after the first based on dual information */
260  )
261 {
262  assert(scip != NULL);
263  assert(vars != NULL);
264  assert(vals != NULL);
265  assert(boundtypes != NULL);
266  assert(scip->set->reopt_enable);
267  assert(scip->reopt != NULL);
268 
269  SCIPreoptnodeGetPath(scip->reopt, reoptnode, vars, vals, boundtypes, mem, nvars, nafterdualvars);
270 }
271 
272 /** initialize a set of empty reoptimization nodes
273  *
274  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
275  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
276  *
277  * @pre This method can be called if @p scip is in one of the following stages:
278  * - \ref SCIP_STAGE_PRESOLVED
279  */
281  SCIP* scip, /**< SCIP data structure */
282  SCIP_REOPTNODE** representatives, /**< array of representatives */
283  int nrepresentatives /**< number of representatives */
284  )
285 {
286  int r;
287 
288  assert(scip != NULL);
289  assert(representatives != NULL);
290 
291  SCIP_CALL( SCIPcheckStage(scip, "SCIPinitRepresentation", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE) );
292 
293  for( r = 0; r < nrepresentatives; r++ )
294  {
295  SCIP_CALL( SCIPallocBlockMemory(scip, &representatives[r]) ); /*lint !e866*/
296  SCIPreoptnodeInit(representatives[r], scip->set);
297  }
298 
299  return SCIP_OKAY;
300 }
301 
302 /** reset a set of initialized reoptimization nodes
303  *
304  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
305  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
306  *
307  * @pre This method can be called if @p scip is in one of the following stages:
308  * - \ref SCIP_STAGE_PRESOLVED
309  */
311  SCIP* scip, /**< SCIP data structure */
312  SCIP_REOPTNODE** representatives, /**< array of representatives */
313  int nrepresentatives /**< number of representatives */
314  )
315 {
316  int r;
317 
318  assert(scip != NULL);
319  assert(representatives != NULL);
320 
321  SCIP_CALL( SCIPcheckStage(scip, "SCIPresetRepresentation", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE) );
322 
323  for( r = 0; r < nrepresentatives; r++ )
324  {
325  SCIP_CALL( SCIPreoptnodeReset(scip->reopt, scip->set, scip->mem->probmem, representatives[r]) );
326  }
327 
328  return SCIP_OKAY;
329 }
330 
331 /** free a set of initialized reoptimization nodes
332  *
333  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
334  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
335  *
336  * @pre This method can be called if @p scip is in one of the following stages:
337  * - \ref SCIP_STAGE_PRESOLVED
338  */
340  SCIP* scip, /**< SCIP data structure */
341  SCIP_REOPTNODE** representatives, /**< array of representatives */
342  int nrepresentatives /**< number of representatives */
343  )
344 {
345  int r;
346 
347  assert(scip != NULL);
348  assert(representatives != NULL);
349 
350  SCIP_CALL( SCIPcheckStage(scip, "SCIPfreeRepresentation", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE) );
351 
352  for( r = 0; r < nrepresentatives; r++ )
353  {
354  if( representatives[r] != NULL )
355  {
356  SCIP_CALL( SCIPreoptnodeDelete(&representatives[r], scip->mem->probmem) );
357  assert(representatives[r] == NULL);
358  }
359  }
360 
361  return SCIP_OKAY;
362 }
363 
364 /** reactivate the given @p reoptnode and split them into several nodes if necessary
365  *
366  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
367  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
368  *
369  * @pre This method can be called if @p scip is in one of the following stages:
370  * - \ref SCIP_STAGE_SOLVING
371  * - \ref SCIP_STAGE_SOLVED
372  */
374  SCIP* scip, /**< SCIP data structure */
375  SCIP_REOPTNODE* reoptnode, /**< node to reactivate */
376  unsigned int id, /**< unique id of the reoptimization node */
377  SCIP_Real estimate, /**< estimate of the child nodes that should be created */
378  SCIP_NODE** childnodes, /**< array to store the created child nodes */
379  int* ncreatedchilds, /**< pointer to store number of created child nodes */
380  int* naddedconss, /**< pointer to store number of generated constraints */
381  int childnodessize, /**< available size of childnodes array */
382  SCIP_Bool* success /**< pointer store the result*/
383  )
384 {
385  assert(scip != NULL);
386  assert(reoptnode != NULL);
387 
388  SCIP_CALL( SCIPcheckStage(scip, "SCIPapplyReopt", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, FALSE, FALSE, FALSE) );
389 
390  SCIP_CALL( SCIPreoptApply(scip->reopt, scip, scip->set, scip->stat, scip->transprob, scip->origprob, scip->tree,
391  scip->lp, scip->branchcand, scip->eventqueue, scip->cliquetable, scip->mem->probmem, reoptnode, id, estimate,
392  childnodes, ncreatedchilds, naddedconss, childnodessize, success) );
393 
394  return SCIP_OKAY;
395 }
396 
397 /** return the similarity between two objective functions */
399  SCIP* scip, /**< SCIP data structure */
400  int run1, /**< number of run */
401  int run2 /**< number of run */
402  )
403 {
404  assert(scip != NULL);
405  assert(run1 > 0 && run1 <= scip->stat->nreoptruns);
406  assert(run2 > 0 && run2 <= scip->stat->nreoptruns);
407 
408  if( (run1 == scip->stat->nreoptruns && run2 == run1-1) || (run2 == scip->stat->nreoptruns && run1 == run2-1) )
409  return SCIPreoptGetSimToPrevious(scip->reopt);
410  else
411  return SCIPreoptGetSimilarity(scip->reopt, scip->set, run1, run2, scip->origprob->vars, scip->origprob->nvars);
412 }
413 
414 /** returns if a node should be reoptimized */
416  SCIP* scip, /**< SCIP data structure */
417  SCIP_NODE* node /**< node of the search tree */
418  )
419 {
420  assert(scip != NULL);
421  assert(node != NULL);
422 
423  if( scip->set->reopt_enable )
424  {
425  SCIP_REOPTNODE* reoptnode;
426  unsigned int id;
427 
428  assert(scip->reopt != NULL);
429 
430  id = SCIPnodeGetReoptID(node);
431 
432  if( id == 0 && node != SCIPgetRootNode(scip) )
433  return FALSE;
434  else
435  {
436  reoptnode = SCIPgetReoptnode(scip, id);
437  assert(reoptnode != NULL);
438 
439  return SCIPreoptnodeGetNChildren(reoptnode) > 0;
440  }
441  }
442  else
443  return FALSE;
444 }
445 
446 /** deletes the given reoptimization node
447  *
448  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
449  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
450  *
451  * @pre This method can be called if @p scip is in one of the following stages:
452  * - \ref SCIP_STAGE_TRANSFORMED
453  * - \ref SCIP_STAGE_SOLVING
454  */
456  SCIP* scip, /**< SCIP data structure */
457  SCIP_REOPTNODE** reoptnode /**< node of the reoptimization tree */
458  )
459 {
460  assert(scip != NULL);
461  assert(scip->set->reopt_enable);
462  assert(scip->reopt != NULL);
463  assert((*reoptnode) != NULL);
464 
465  SCIP_CALL( SCIPcheckStage(scip, "SCIPdeleteReoptnode", FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE) );
466 
467  SCIP_CALL( SCIPreoptnodeDelete(reoptnode, scip->mem->probmem) );
468 
469  return SCIP_OKAY;
470 }
471 
472 /** splits the root into several nodes and moves the child nodes of the root to one of the created nodes
473  *
474  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
475  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
476  *
477  * @pre This method can be called if @p scip is in one of the following stages:
478  * - \ref SCIP_STAGE_SOLVING
479  */
481  SCIP* scip, /**< SCIP data structure */
482  int* ncreatedchilds, /**< pointer to store the number of created nodes */
483  int* naddedconss /**< pointer to store the number added constraints */
484  )
485 {
486  assert(scip != NULL);
487  assert(scip->set->reopt_enable);
488  assert(scip->reopt != NULL);
489 
490  SCIP_CALL( SCIPcheckStage(scip, "SCIPsplitReoptRoot", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE) );
491 
492  SCIP_CALL( SCIPreoptSplitRoot(scip->reopt, scip->tree, scip->set, scip->stat, scip->mem->probmem, ncreatedchilds,
493  naddedconss) );
494 
495  return SCIP_OKAY;
496 }
497 
498 /** remove the stored information about bound changes based in dual information
499  *
500  * @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
501  * SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
502  *
503  * @pre This method can be called if @p scip is in one of the following stages:
504  * - \ref SCIP_STAGE_SOLVING
505  * - \ref SCIP_STAGE_SOLVED
506  */
508  SCIP* scip, /**< SCIP data structure */
509  SCIP_NODE* node /**< node of the search tree */
510  )
511 {
512  assert(scip != NULL);
513  assert(scip->set->reopt_enable);
514  assert(node != NULL);
515 
516  SCIP_CALL( SCIPcheckStage(scip, "SCIPresetReoptnodeDualcons", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, FALSE, FALSE, FALSE) );
517 
518  SCIP_CALL( SCIPreoptResetDualBndchgs(scip->reopt, node, scip->mem->probmem) );
519 
520  return SCIP_OKAY;
521 }
SCIP_STAT * stat
Definition: struct_scip.h:70
SCIP_RETCODE SCIPreoptSplitRoot(SCIP_REOPT *reopt, SCIP_TREE *tree, SCIP_SET *set, SCIP_STAT *stat, BMS_BLKMEM *blkmem, int *ncreatedchilds, int *naddedconss)
Definition: reopt.c:6954
enum SCIP_BoundType SCIP_BOUNDTYPE
Definition: type_lp.h:50
SCIP_Real SCIPreoptGetSimToPrevious(SCIP_REOPT *reopt)
Definition: reopt.c:5669
int SCIPreoptGetNLeaves(SCIP_REOPT *reopt, SCIP_NODE *node)
Definition: reopt.c:5971
SCIP_RETCODE SCIPreoptApply(SCIP_REOPT *reopt, SCIP *scip, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *transprob, SCIP_PROB *origprob, SCIP_TREE *tree, SCIP_LP *lp, SCIP_BRANCHCAND *branchcand, SCIP_EVENTQUEUE *eventqueue, SCIP_CLIQUETABLE *cliquetable, BMS_BLKMEM *blkmem, SCIP_REOPTNODE *reoptnode, unsigned int id, SCIP_Real estimate, SCIP_NODE **childnodes, int *ncreatedchilds, int *naddedconss, int childnodessize, SCIP_Bool *success)
Definition: reopt.c:7352
public methods for branch and bound tree
public methods for memory management
SCIP_REOPTNODE * SCIPreoptGetReoptnode(SCIP_REOPT *reopt, unsigned int id)
Definition: reopt.c:5720
static long bound
SCIP_RETCODE SCIPreoptGetLeaves(SCIP_REOPT *reopt, SCIP_NODE *node, unsigned int *leaves, int leavessize, int *nleaves)
Definition: reopt.c:6461
SCIP_EVENTQUEUE * eventqueue
Definition: struct_scip.h:80
SCIP_Bool SCIPreoptimizeNode(SCIP *scip, SCIP_NODE *node)
Definition: scip_reopt.c:415
int nreoptruns
Definition: struct_stat.h:265
SCIP_RETCODE SCIPreoptnodeDelete(SCIP_REOPTNODE **reoptnode, BMS_BLKMEM *blkmem)
Definition: reopt.c:8021
SCIP_BRANCHCAND * branchcand
Definition: struct_scip.h:81
#define FALSE
Definition: def.h:87
SCIP_RETCODE SCIPreoptApplyCompression(SCIP_REOPT *reopt, SCIP_SET *set, BMS_BLKMEM *blkmem, SCIP_REOPTNODE **representatives, int nrepresentatives, SCIP_Bool *success)
Definition: reopt.c:6729
#define TRUE
Definition: def.h:86
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:54
int SCIPgetNReoptnodes(SCIP *scip, SCIP_NODE *node)
Definition: scip_reopt.c:117
SCIP_RETCODE SCIPreoptnodeAddCons(SCIP_REOPTNODE *reoptnode, SCIP_SET *set, BMS_BLKMEM *blkmem, SCIP_VAR **vars, SCIP_Real *bounds, SCIP_BOUNDTYPE *boundtypes, SCIP_Real lhs, SCIP_Real rhs, int nvars, REOPT_CONSTYPE constype, SCIP_Bool linear)
Definition: reopt.c:8063
public methods for reoptimization
SCIP_RETCODE SCIPinitRepresentation(SCIP *scip, SCIP_REOPTNODE **representatives, int nrepresentatives)
Definition: scip_reopt.c:280
SCIP_PROB * transprob
Definition: struct_scip.h:89
SCIP_NODE * SCIPgetRootNode(SCIP *scip)
Definition: scip_tree.c:101
SCIP_PROB * origprob
Definition: struct_scip.h:71
SCIP_RETCODE SCIPdeleteReoptnode(SCIP *scip, SCIP_REOPTNODE **reoptnode)
Definition: scip_reopt.c:455
SCIP_Bool reopt_enable
Definition: struct_set.h:504
int SCIPreoptGetNNodes(SCIP_REOPT *reopt, SCIP_NODE *node)
Definition: reopt.c:5819
SCIP_RETCODE SCIPfreeRepresentation(SCIP *scip, SCIP_REOPTNODE **representatives, int nrepresentatives)
Definition: scip_reopt.c:339
public methods for the branch-and-bound tree
SCIP_Real SCIPreoptGetSimilarity(SCIP_REOPT *reopt, SCIP_SET *set, int run1, int run2, SCIP_VAR **origvars, int norigvars)
Definition: reopt.c:5687
SCIP_RETCODE SCIPsetReoptCompression(SCIP *scip, SCIP_REOPTNODE **representation, int nrepresentatives, SCIP_Bool *success)
Definition: scip_reopt.c:195
public methods for reoptimization
SCIP_MEM * mem
Definition: struct_scip.h:62
SCIP_RETCODE SCIPgetReoptChildIDs(SCIP *scip, SCIP_NODE *node, unsigned int *ids, int idssize, int *nids)
Definition: scip_reopt.c:60
SCIP_RETCODE SCIPcheckStage(SCIP *scip, const char *method, SCIP_Bool init, SCIP_Bool problem, SCIP_Bool transforming, SCIP_Bool transformed, SCIP_Bool initpresolve, SCIP_Bool presolving, SCIP_Bool exitpresolve, SCIP_Bool presolved, SCIP_Bool initsolve, SCIP_Bool solving, SCIP_Bool solved, SCIP_Bool exitsolve, SCIP_Bool freetrans, SCIP_Bool freescip)
Definition: debug.c:2177
SCIP_REOPT * reopt
Definition: struct_scip.h:76
#define NULL
Definition: lpi_spx1.cpp:155
void SCIPreoptnodeInit(SCIP_REOPTNODE *reoptnode, SCIP_SET *set)
Definition: reopt.c:7970
#define SCIP_CALL(x)
Definition: def.h:384
SCIP main data structure.
SCIP_RETCODE SCIPreoptResetDualBndchgs(SCIP_REOPT *reopt, SCIP_NODE *node, BMS_BLKMEM *blkmem)
Definition: reopt.c:7248
void SCIPreoptnodeGetPath(SCIP_REOPT *reopt, SCIP_REOPTNODE *reoptnode, SCIP_VAR **vars, SCIP_Real *vals, SCIP_BOUNDTYPE *boundtypes, int varssize, int *nbndchgs, int *nbndchgsafterdual)
Definition: reopt.c:7273
SCIP_CLIQUETABLE * cliquetable
Definition: struct_scip.h:88
data structures and methods for collecting reoptimization information
SCIP_RETCODE SCIPresetReoptnodeDualcons(SCIP *scip, SCIP_NODE *node)
Definition: scip_reopt.c:507
int SCIPreoptnodeGetNChildren(SCIP_REOPTNODE *reoptnode)
Definition: reopt.c:5892
SCIP_RETCODE SCIPreoptGetChildIDs(SCIP_REOPT *reopt, SCIP_SET *set, BMS_BLKMEM *blkmem, SCIP_NODE *node, unsigned int *childs, int childssize, int *nchilds)
Definition: reopt.c:6408
#define SCIP_Bool
Definition: def.h:84
SCIP_RETCODE SCIPaddReoptnodeCons(SCIP *scip, SCIP_REOPTNODE *reoptnode, SCIP_VAR **vars, SCIP_Real *vals, SCIP_BOUNDTYPE *boundtypes, SCIP_Real lhs, SCIP_Real rhs, int nvars, REOPT_CONSTYPE constype, SCIP_Bool linear)
Definition: scip_reopt.c:223
methods for debugging
datastructures for block memory pools and memory buffers
SCIP_RETCODE SCIPaddReoptnodeBndchg(SCIP *scip, SCIP_REOPTNODE *reoptnode, SCIP_VAR *var, SCIP_Real bound, SCIP_BOUNDTYPE boundtype)
Definition: scip_reopt.c:167
SCIP_Real SCIPgetReoptSimilarity(SCIP *scip, int run1, int run2)
Definition: scip_reopt.c:398
void SCIPgetReoptnodePath(SCIP *scip, SCIP_REOPTNODE *reoptnode, SCIP_VAR **vars, SCIP_Real *vals, SCIP_BOUNDTYPE *boundtypes, int mem, int *nvars, int *nafterdualvars)
Definition: scip_reopt.c:251
SCIP_RETCODE SCIPreoptnodeAddBndchg(SCIP_REOPTNODE *reoptnode, SCIP_SET *set, BMS_BLKMEM *blkmem, SCIP_VAR *var, SCIP_Real val, SCIP_BOUNDTYPE boundtype)
Definition: reopt.c:8035
datastructures for problem statistics
datastructures for storing and manipulating the main problem
SCIP_Real * r
Definition: circlepacking.c:50
BMS_BLKMEM * probmem
Definition: struct_mem.h:40
unsigned int SCIPnodeGetReoptID(SCIP_NODE *node)
Definition: tree.c:7505
SCIP_RETCODE SCIPreoptnodeReset(SCIP_REOPT *reopt, SCIP_SET *set, BMS_BLKMEM *blkmem, SCIP_REOPTNODE *reoptnode)
Definition: reopt.c:8003
SCIP_SET * set
Definition: struct_scip.h:63
public methods for message output
SCIP_RETCODE SCIPsplitReoptRoot(SCIP *scip, int *ncreatedchilds, int *naddedconss)
Definition: scip_reopt.c:480
SCIP_RETCODE SCIPapplyReopt(SCIP *scip, SCIP_REOPTNODE *reoptnode, unsigned int id, SCIP_Real estimate, SCIP_NODE **childnodes, int *ncreatedchilds, int *naddedconss, int childnodessize, SCIP_Bool *success)
Definition: scip_reopt.c:373
#define SCIP_Real
Definition: def.h:177
SCIP_VAR ** vars
Definition: struct_prob.h:55
SCIP_RETCODE SCIPgetReoptLeaveIDs(SCIP *scip, SCIP_NODE *node, unsigned int *ids, int idssize, int *nids)
Definition: scip_reopt.c:92
SCIP_TREE * tree
Definition: struct_scip.h:86
enum Reopt_ConsType REOPT_CONSTYPE
Definition: type_reopt.h:67
SCIPallocBlockMemory(scip, subsol))
SCIP_REOPTNODE * SCIPgetReoptnode(SCIP *scip, unsigned int id)
Definition: scip_reopt.c:145
SCIP_LP * lp
Definition: struct_scip.h:82
int SCIPgetNReoptLeaves(SCIP *scip, SCIP_NODE *node)
Definition: scip_reopt.c:132
SCIP_RETCODE SCIPresetRepresentation(SCIP *scip, SCIP_REOPTNODE **representatives, int nrepresentatives)
Definition: scip_reopt.c:310
datastructures for global SCIP settings