[14] | 1 | /**CFile*********************************************************************** |
---|
| 2 | |
---|
| 3 | FileName [satUtil.c] |
---|
| 4 | |
---|
| 5 | PackageName [sat] |
---|
| 6 | |
---|
| 7 | Synopsis [Routines for various utility function.] |
---|
| 8 | |
---|
| 9 | Author [HoonSang Jin] |
---|
| 10 | |
---|
| 11 | Copyright [ This file was created at the University of Colorado at |
---|
| 12 | Boulder. The University of Colorado at Boulder makes no warranty |
---|
| 13 | about the suitability of this software for any purpose. It is |
---|
| 14 | presented on an AS IS basis.] |
---|
| 15 | |
---|
| 16 | |
---|
| 17 | ******************************************************************************/ |
---|
| 18 | |
---|
| 19 | #include "satInt.h" |
---|
| 20 | |
---|
| 21 | static char rcsid[] UNUSED = "$Id: satUtil.c,v 1.37 2009/04/11 18:26:37 fabio Exp $"; |
---|
| 22 | |
---|
| 23 | /*---------------------------------------------------------------------------*/ |
---|
| 24 | /* Constant declarations */ |
---|
| 25 | /*---------------------------------------------------------------------------*/ |
---|
| 26 | |
---|
| 27 | /**AutomaticStart*************************************************************/ |
---|
| 28 | |
---|
| 29 | /*---------------------------------------------------------------------------*/ |
---|
| 30 | /* Static function prototypes */ |
---|
| 31 | /*---------------------------------------------------------------------------*/ |
---|
| 32 | |
---|
| 33 | static int NodeIndexCompare(const void *x, const void *y); |
---|
| 34 | |
---|
| 35 | /**AutomaticEnd***************************************************************/ |
---|
| 36 | |
---|
| 37 | |
---|
| 38 | /*---------------------------------------------------------------------------*/ |
---|
| 39 | /* Definition of exported functions */ |
---|
| 40 | /*---------------------------------------------------------------------------*/ |
---|
| 41 | |
---|
| 42 | |
---|
| 43 | /**Function******************************************************************** |
---|
| 44 | |
---|
| 45 | Synopsis [ Add conflict clause into clause database] |
---|
| 46 | |
---|
| 47 | Description [ Add conflict clause into clause database] |
---|
| 48 | |
---|
| 49 | SideEffects [] |
---|
| 50 | |
---|
| 51 | SeeAlso [] |
---|
| 52 | |
---|
| 53 | ******************************************************************************/ |
---|
| 54 | long |
---|
| 55 | sat_AddConflictClause( |
---|
| 56 | satManager_t *cm, |
---|
| 57 | satArray_t *clauseArray, |
---|
| 58 | int objectFlag) |
---|
| 59 | { |
---|
| 60 | satStatistics_t *stats; |
---|
| 61 | satLiteralDB_t *literals; |
---|
| 62 | satVariable_t *var; |
---|
| 63 | long v, c; |
---|
| 64 | int inverted; |
---|
| 65 | long *last; |
---|
| 66 | long *space; |
---|
| 67 | int i, size; |
---|
| 68 | int maxLevel, maxIndex; |
---|
| 69 | int value, level; |
---|
| 70 | int otherWLIndex; |
---|
| 71 | |
---|
| 72 | literals = cm->literals; |
---|
| 73 | |
---|
| 74 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 75 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 76 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 77 | cm->comment); |
---|
| 78 | exit(0); |
---|
| 79 | } |
---|
| 80 | } |
---|
| 81 | |
---|
| 82 | c = 0; |
---|
| 83 | if(cm->unusedAigQueue) |
---|
| 84 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 85 | if(c == 0) |
---|
| 86 | c = sat_CreateNode(cm, 2, 2); |
---|
| 87 | |
---|
| 88 | |
---|
| 89 | last = literals->last; |
---|
| 90 | *(last) = (-c); |
---|
| 91 | last++; |
---|
| 92 | |
---|
| 93 | /** |
---|
| 94 | SATfirstLit(c) = (int)last; |
---|
| 95 | **/ |
---|
| 96 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 97 | SATnumLits(c) = clauseArray->num; |
---|
| 98 | SATflags(c) |= IsCNFMask; |
---|
| 99 | SATsetInUse(c); |
---|
| 100 | SATnumConflict(c) = 0; |
---|
| 101 | |
---|
| 102 | size = clauseArray->num; |
---|
| 103 | space = clauseArray->space; |
---|
| 104 | for(i=0; i<size; i++, space++) { |
---|
| 105 | v = *space; |
---|
| 106 | inverted = !SATisInverted(v); |
---|
| 107 | v = SATnormalNode(v); |
---|
| 108 | |
---|
| 109 | *(last) = ((v^inverted) << 2); |
---|
| 110 | last++; |
---|
| 111 | |
---|
| 112 | var = SATgetVariable(v); |
---|
| 113 | |
---|
| 114 | if(inverted){ |
---|
| 115 | (var->litsCount[0])++; |
---|
| 116 | (var->conflictLits[0])++; |
---|
| 117 | } |
---|
| 118 | else { |
---|
| 119 | (var->litsCount[1])++; |
---|
| 120 | (var->conflictLits[1])++; |
---|
| 121 | } |
---|
| 122 | } |
---|
| 123 | *(last) = (-c); |
---|
| 124 | last++; |
---|
| 125 | |
---|
| 126 | literals->last = last; |
---|
| 127 | |
---|
| 128 | maxLevel = -1; |
---|
| 129 | maxIndex = -1; |
---|
| 130 | otherWLIndex = -1; |
---|
| 131 | space = clauseArray->space; |
---|
| 132 | for(i=0; i<size; i++, space++) { |
---|
| 133 | v = *space; |
---|
| 134 | inverted = SATisInverted(v); |
---|
| 135 | v = SATnormalNode(v); |
---|
| 136 | value = SATvalue(v); |
---|
| 137 | if(value == 2) { |
---|
| 138 | sat_AddWL(cm, c, i, 1); |
---|
| 139 | otherWLIndex = i; |
---|
| 140 | break; |
---|
| 141 | } |
---|
| 142 | else { |
---|
| 143 | level = SATlevel(v); |
---|
| 144 | if(level > maxLevel) { |
---|
| 145 | maxLevel = level; |
---|
| 146 | maxIndex = i; |
---|
| 147 | } |
---|
| 148 | } |
---|
| 149 | } |
---|
| 150 | if(i >= size) { |
---|
| 151 | sat_AddWL(cm, c, maxIndex, 1); |
---|
| 152 | otherWLIndex = maxIndex; |
---|
| 153 | } |
---|
| 154 | |
---|
| 155 | maxLevel = -1; |
---|
| 156 | maxIndex = -1; |
---|
| 157 | space = clauseArray->space+size-1; |
---|
| 158 | for(i=size-1; i>=0; i--, space--) { |
---|
| 159 | v = *space; |
---|
| 160 | inverted = SATisInverted(v); |
---|
| 161 | v = SATnormalNode(v); |
---|
| 162 | value = SATvalue(v); |
---|
| 163 | if(i != otherWLIndex) { |
---|
| 164 | if(value == 2) { |
---|
| 165 | sat_AddWL(cm, c, i, -1); |
---|
| 166 | break; |
---|
| 167 | } |
---|
| 168 | else { |
---|
| 169 | level = SATlevel(v); |
---|
| 170 | if(level > maxLevel) { |
---|
| 171 | maxLevel = level; |
---|
| 172 | maxIndex = i; |
---|
| 173 | } |
---|
| 174 | } |
---|
| 175 | } |
---|
| 176 | } |
---|
| 177 | if(i < 0) |
---|
| 178 | sat_AddWL(cm, c, maxIndex, -1); |
---|
| 179 | |
---|
| 180 | |
---|
| 181 | SATflags(c) |= IsConflictMask; |
---|
| 182 | |
---|
| 183 | stats = cm->each; |
---|
| 184 | stats->nConflictCl++; |
---|
| 185 | stats->nConflictLit += clauseArray->num; |
---|
| 186 | if(objectFlag) { |
---|
| 187 | stats->nObjConflictCl++; |
---|
| 188 | stats->nObjConflictLit += clauseArray->num; |
---|
| 189 | SATflags(c) |= ObjMask; |
---|
| 190 | } |
---|
| 191 | else { |
---|
| 192 | stats->nNonobjConflictCl++; |
---|
| 193 | stats->nNonobjConflictLit += clauseArray->num; |
---|
| 194 | SATflags(c) |= NonobjMask; |
---|
| 195 | } |
---|
| 196 | |
---|
| 197 | |
---|
| 198 | return(c); |
---|
| 199 | } |
---|
| 200 | |
---|
| 201 | /**Function******************************************************************** |
---|
| 202 | |
---|
| 203 | Synopsis [ Add conflict clause into clause database without updating score] |
---|
| 204 | |
---|
| 205 | Description [ Add conflict clause into clause database without updating score] |
---|
| 206 | |
---|
| 207 | SideEffects [] |
---|
| 208 | |
---|
| 209 | SeeAlso [] |
---|
| 210 | |
---|
| 211 | ******************************************************************************/ |
---|
| 212 | long |
---|
| 213 | sat_AddConflictClauseNoScoreUpdate( |
---|
| 214 | satManager_t *cm, |
---|
| 215 | satArray_t *clauseArray, |
---|
| 216 | int objectFlag) |
---|
| 217 | { |
---|
| 218 | satStatistics_t *stats; |
---|
| 219 | satLiteralDB_t *literals; |
---|
| 220 | satVariable_t *var; |
---|
| 221 | long v, c; |
---|
| 222 | int inverted; |
---|
| 223 | long *last; |
---|
| 224 | long *space; |
---|
| 225 | int i, size; |
---|
| 226 | int maxLevel, maxIndex; |
---|
| 227 | int value, level; |
---|
| 228 | int otherWLIndex; |
---|
| 229 | |
---|
| 230 | literals = cm->literals; |
---|
| 231 | |
---|
| 232 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 233 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 234 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 235 | cm->comment); |
---|
| 236 | exit(0); |
---|
| 237 | } |
---|
| 238 | } |
---|
| 239 | |
---|
| 240 | c = 0; |
---|
| 241 | if(cm->unusedAigQueue) |
---|
| 242 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 243 | if(c == 0) |
---|
| 244 | c = sat_CreateNode(cm, 2, 2); |
---|
| 245 | |
---|
| 246 | |
---|
| 247 | last = literals->last; |
---|
| 248 | *(last) = (-c); |
---|
| 249 | last++; |
---|
| 250 | |
---|
| 251 | /** |
---|
| 252 | SATfirstLit(c) = (int)last; |
---|
| 253 | **/ |
---|
| 254 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 255 | SATnumLits(c) = clauseArray->num; |
---|
| 256 | SATflags(c) |= IsCNFMask; |
---|
| 257 | SATsetInUse(c); |
---|
| 258 | SATnumConflict(c) = 0; |
---|
| 259 | |
---|
| 260 | size = clauseArray->num; |
---|
| 261 | space = clauseArray->space; |
---|
| 262 | for(i=0; i<size; i++, space++) { |
---|
| 263 | v = *space; |
---|
| 264 | inverted = !SATisInverted(v); |
---|
| 265 | v = SATnormalNode(v); |
---|
| 266 | |
---|
| 267 | *(last) = ((v^inverted) << 2); |
---|
| 268 | last++; |
---|
| 269 | |
---|
| 270 | var = SATgetVariable(v); |
---|
| 271 | |
---|
| 272 | if(inverted){ |
---|
| 273 | (var->litsCount[0])++; |
---|
| 274 | (var->conflictLits[0])++; |
---|
| 275 | } |
---|
| 276 | else { |
---|
| 277 | (var->litsCount[1])++; |
---|
| 278 | (var->conflictLits[1])++; |
---|
| 279 | } |
---|
| 280 | } |
---|
| 281 | *(last) = (-c); |
---|
| 282 | last++; |
---|
| 283 | |
---|
| 284 | literals->last = last; |
---|
| 285 | |
---|
| 286 | maxLevel = -1; |
---|
| 287 | maxIndex = -1; |
---|
| 288 | otherWLIndex = -1; |
---|
| 289 | space = clauseArray->space; |
---|
| 290 | for(i=0; i<size; i++, space++) { |
---|
| 291 | v = *space; |
---|
| 292 | inverted = SATisInverted(v); |
---|
| 293 | v = SATnormalNode(v); |
---|
| 294 | value = SATvalue(v); |
---|
| 295 | if(value == 2) { |
---|
| 296 | sat_AddWL(cm, c, i, 1); |
---|
| 297 | otherWLIndex = i; |
---|
| 298 | break; |
---|
| 299 | } |
---|
| 300 | else { |
---|
| 301 | level = SATlevel(v); |
---|
| 302 | if(level > maxLevel) { |
---|
| 303 | maxLevel = level; |
---|
| 304 | maxIndex = i; |
---|
| 305 | } |
---|
| 306 | } |
---|
| 307 | } |
---|
| 308 | if(i >= size) { |
---|
| 309 | sat_AddWL(cm, c, maxIndex, 1); |
---|
| 310 | otherWLIndex = maxIndex; |
---|
| 311 | } |
---|
| 312 | |
---|
| 313 | maxLevel = -1; |
---|
| 314 | maxIndex = -1; |
---|
| 315 | space = clauseArray->space+size-1; |
---|
| 316 | for(i=size-1; i>=0; i--, space--) { |
---|
| 317 | v = *space; |
---|
| 318 | inverted = SATisInverted(v); |
---|
| 319 | v = SATnormalNode(v); |
---|
| 320 | value = SATvalue(v); |
---|
| 321 | if(i != otherWLIndex) { |
---|
| 322 | if(value == 2) { |
---|
| 323 | sat_AddWL(cm, c, i, -1); |
---|
| 324 | break; |
---|
| 325 | } |
---|
| 326 | else { |
---|
| 327 | level = SATlevel(v); |
---|
| 328 | if(level > maxLevel) { |
---|
| 329 | maxLevel = level; |
---|
| 330 | maxIndex = i; |
---|
| 331 | } |
---|
| 332 | } |
---|
| 333 | } |
---|
| 334 | } |
---|
| 335 | if(i < 0) |
---|
| 336 | sat_AddWL(cm, c, maxIndex, -1); |
---|
| 337 | |
---|
| 338 | |
---|
| 339 | SATflags(c) |= IsConflictMask; |
---|
| 340 | |
---|
| 341 | stats = cm->each; |
---|
| 342 | stats->nConflictCl++; |
---|
| 343 | stats->nConflictLit += clauseArray->num; |
---|
| 344 | if(objectFlag) { |
---|
| 345 | stats->nObjConflictCl++; |
---|
| 346 | stats->nObjConflictLit += clauseArray->num; |
---|
| 347 | SATflags(c) |= ObjMask; |
---|
| 348 | } |
---|
| 349 | else { |
---|
| 350 | stats->nNonobjConflictCl++; |
---|
| 351 | stats->nNonobjConflictLit += clauseArray->num; |
---|
| 352 | SATflags(c) |= NonobjMask; |
---|
| 353 | } |
---|
| 354 | |
---|
| 355 | |
---|
| 356 | return(c); |
---|
| 357 | } |
---|
| 358 | /**Function******************************************************************** |
---|
| 359 | |
---|
| 360 | Synopsis [ Add unit conflict clause into clause database] |
---|
| 361 | |
---|
| 362 | Description [ Add unit conflict clause into clause database] |
---|
| 363 | |
---|
| 364 | SideEffects [] |
---|
| 365 | |
---|
| 366 | SeeAlso [] |
---|
| 367 | |
---|
| 368 | ******************************************************************************/ |
---|
| 369 | long |
---|
| 370 | sat_AddUnitConflictClause( |
---|
| 371 | satManager_t *cm, |
---|
| 372 | satArray_t *clauseArray, |
---|
| 373 | int objectFlag) |
---|
| 374 | { |
---|
| 375 | satLiteralDB_t *literals; |
---|
| 376 | satStatistics_t *stats; |
---|
| 377 | long c, v; |
---|
| 378 | int inverted; |
---|
| 379 | long *last, *space; |
---|
| 380 | int i, size; |
---|
| 381 | |
---|
| 382 | literals = cm->literals; |
---|
| 383 | |
---|
| 384 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 385 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 386 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 387 | cm->comment); |
---|
| 388 | exit(0); |
---|
| 389 | } |
---|
| 390 | } |
---|
| 391 | |
---|
| 392 | c = 0; |
---|
| 393 | if(cm->unusedAigQueue) |
---|
| 394 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 395 | if(c == 0) |
---|
| 396 | c = sat_CreateNode(cm, 2, 2); |
---|
| 397 | |
---|
| 398 | |
---|
| 399 | last = literals->last; |
---|
| 400 | *(last) = (-c); |
---|
| 401 | last++; |
---|
| 402 | |
---|
| 403 | /** |
---|
| 404 | SATfirstLit(c) = (int)last; |
---|
| 405 | **/ |
---|
| 406 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 407 | SATnumLits(c) = clauseArray->num; |
---|
| 408 | SATflags(c) |= IsCNFMask; |
---|
| 409 | SATsetInUse(c); |
---|
| 410 | SATnumConflict(c) = 0; |
---|
| 411 | |
---|
| 412 | size = clauseArray->num; |
---|
| 413 | space = clauseArray->space; |
---|
| 414 | for(i=0; i<size; i++, space++) { |
---|
| 415 | v = *space; |
---|
| 416 | inverted = !SATisInverted(v); |
---|
| 417 | v = SATnormalNode(v); |
---|
| 418 | |
---|
| 419 | *(last) = ((v^inverted) << 2); |
---|
| 420 | last++; |
---|
| 421 | } |
---|
| 422 | *(last) = (-c); |
---|
| 423 | last++; |
---|
| 424 | |
---|
| 425 | literals->last = last; |
---|
| 426 | |
---|
| 427 | SATflags(c) |= IsConflictMask; |
---|
| 428 | stats = cm->each; |
---|
| 429 | stats->nConflictCl++; |
---|
| 430 | stats->nConflictLit += clauseArray->num; |
---|
| 431 | if(objectFlag) { |
---|
| 432 | stats->nObjConflictCl++; |
---|
| 433 | stats->nObjConflictLit += clauseArray->num; |
---|
| 434 | SATflags(c) |= ObjMask; |
---|
| 435 | } |
---|
| 436 | else { |
---|
| 437 | stats->nNonobjConflictCl++; |
---|
| 438 | stats->nNonobjConflictLit += clauseArray->num; |
---|
| 439 | SATflags(c) |= NonobjMask; |
---|
| 440 | } |
---|
| 441 | |
---|
| 442 | return(c); |
---|
| 443 | } |
---|
| 444 | /**Function******************************************************************** |
---|
| 445 | |
---|
| 446 | Synopsis [ Add unit blocking clause into clause database] |
---|
| 447 | |
---|
| 448 | Description [ Add unit blocking clause into clause database] |
---|
| 449 | |
---|
| 450 | SideEffects [] |
---|
| 451 | |
---|
| 452 | SeeAlso [] |
---|
| 453 | |
---|
| 454 | ******************************************************************************/ |
---|
| 455 | long |
---|
| 456 | sat_AddUnitBlockingClause( |
---|
| 457 | satManager_t *cm, |
---|
| 458 | satArray_t *clauseArray) |
---|
| 459 | { |
---|
| 460 | satLiteralDB_t *literals; |
---|
| 461 | satStatistics_t *stats; |
---|
| 462 | long c, v; |
---|
| 463 | int inverted; |
---|
| 464 | long *last, *space; |
---|
| 465 | int i, size; |
---|
| 466 | |
---|
| 467 | literals = cm->literals; |
---|
| 468 | stats = cm->each; |
---|
| 469 | |
---|
| 470 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 471 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 472 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 473 | cm->comment); |
---|
| 474 | exit(0); |
---|
| 475 | } |
---|
| 476 | } |
---|
| 477 | |
---|
| 478 | c = 0; |
---|
| 479 | if(cm->unusedAigQueue) |
---|
| 480 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 481 | if(c == 0) |
---|
| 482 | c = sat_CreateNode(cm, 2, 2); |
---|
| 483 | |
---|
| 484 | |
---|
| 485 | last = literals->last; |
---|
| 486 | *(last) = (-c); |
---|
| 487 | last++; |
---|
| 488 | |
---|
| 489 | /** |
---|
| 490 | SATfirstLit(c) = (int)last; |
---|
| 491 | **/ |
---|
| 492 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 493 | SATnumLits(c) = clauseArray->num; |
---|
| 494 | SATflags(c) |= IsCNFMask; |
---|
| 495 | SATsetInUse(c); |
---|
| 496 | SATnumConflict(c) = 0; |
---|
| 497 | |
---|
| 498 | size = clauseArray->num; |
---|
| 499 | space = clauseArray->space; |
---|
| 500 | for(i=0; i<size; i++, space++) { |
---|
| 501 | v = *space; |
---|
| 502 | inverted = !SATisInverted(v); |
---|
| 503 | v = SATnormalNode(v); |
---|
| 504 | |
---|
| 505 | *(last) = ((v^inverted) << 2); |
---|
| 506 | last++; |
---|
| 507 | } |
---|
| 508 | *(last) = (-c); |
---|
| 509 | last++; |
---|
| 510 | |
---|
| 511 | literals->last = last; |
---|
| 512 | |
---|
| 513 | SATflags(c) |= IsBlockingMask; |
---|
| 514 | |
---|
| 515 | stats = cm->each; |
---|
| 516 | stats->nBlockingCl++; |
---|
| 517 | stats->nBlockingLit += clauseArray->num; |
---|
| 518 | return(c); |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | |
---|
| 522 | /**Function******************************************************************** |
---|
| 523 | |
---|
| 524 | Synopsis [ Add unit conflict clause into clause database] |
---|
| 525 | |
---|
| 526 | Description [ Add unit conflict clause into clause database] |
---|
| 527 | |
---|
| 528 | SideEffects [ UNSAT Core generation] |
---|
| 529 | |
---|
| 530 | SeeAlso [] |
---|
| 531 | |
---|
| 532 | ******************************************************************************/ |
---|
| 533 | long |
---|
| 534 | sat_AddUnitClause( |
---|
| 535 | satManager_t *cm, |
---|
| 536 | satArray_t *clauseArray) |
---|
| 537 | { |
---|
| 538 | satLiteralDB_t *literals; |
---|
| 539 | long c = 0, v; |
---|
| 540 | int inverted; |
---|
| 541 | long *last, *space; |
---|
| 542 | int i, size; |
---|
| 543 | |
---|
| 544 | literals = cm->literals; |
---|
| 545 | |
---|
| 546 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 547 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 548 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 549 | cm->comment); |
---|
| 550 | exit(0); |
---|
| 551 | } |
---|
| 552 | } |
---|
| 553 | |
---|
| 554 | |
---|
| 555 | c = 0; |
---|
| 556 | if(cm->unusedAigQueue) |
---|
| 557 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 558 | if(c == 0) |
---|
| 559 | c = sat_CreateNode(cm, 2, 2); |
---|
| 560 | |
---|
| 561 | |
---|
| 562 | last = literals->last; |
---|
| 563 | *(last) = (-c); |
---|
| 564 | last++; |
---|
| 565 | |
---|
| 566 | /** |
---|
| 567 | SATfirstLit(c) = (int)last; |
---|
| 568 | **/ |
---|
| 569 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 570 | SATnumLits(c) = clauseArray->num; |
---|
| 571 | SATflags(c) |= IsCNFMask; |
---|
| 572 | SATsetInUse(c); |
---|
| 573 | SATnumConflict(c) = 0; |
---|
| 574 | |
---|
| 575 | size = clauseArray->num; |
---|
| 576 | space = clauseArray->space; |
---|
| 577 | for(i=0; i<size; i++, space++) { |
---|
| 578 | v = *space; |
---|
| 579 | inverted = !SATisInverted(v); |
---|
| 580 | v = SATnormalNode(v); |
---|
| 581 | |
---|
| 582 | *(last) = ((v^inverted) << 2); |
---|
| 583 | last++; |
---|
| 584 | } |
---|
| 585 | *(last) = (-c); |
---|
| 586 | last++; |
---|
| 587 | |
---|
| 588 | literals->last = last; |
---|
| 589 | |
---|
| 590 | return(c); |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | /**Function******************************************************************** |
---|
| 594 | |
---|
| 595 | Synopsis [ Add conflict clause into clause database] |
---|
| 596 | |
---|
| 597 | Description [ Add conflict clause into clause database] |
---|
| 598 | |
---|
| 599 | SideEffects [] |
---|
| 600 | |
---|
| 601 | SeeAlso [] |
---|
| 602 | |
---|
| 603 | ******************************************************************************/ |
---|
| 604 | long |
---|
| 605 | sat_AddClauseIncremental( |
---|
| 606 | satManager_t *cm, |
---|
| 607 | satArray_t *clauseArray, |
---|
| 608 | int objectFlag, |
---|
| 609 | int fromDistill) |
---|
| 610 | { |
---|
| 611 | satLiteralDB_t *literals; |
---|
| 612 | satStatistics_t *stats; |
---|
| 613 | satVariable_t *var; |
---|
| 614 | long c, v; |
---|
| 615 | int inverted; |
---|
| 616 | long *last, *space; |
---|
| 617 | int i, size; |
---|
| 618 | int maxLevel, maxIndex; |
---|
| 619 | int value, level; |
---|
| 620 | int otherWLIndex; |
---|
| 621 | |
---|
| 622 | literals = cm->literals; |
---|
| 623 | stats = cm->each; |
---|
| 624 | |
---|
| 625 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 626 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 627 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 628 | cm->comment); |
---|
| 629 | exit(0); |
---|
| 630 | } |
---|
| 631 | } |
---|
| 632 | |
---|
| 633 | c = 0; |
---|
| 634 | if(cm->unusedAigQueue) |
---|
| 635 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 636 | if(c == 0) |
---|
| 637 | c = sat_CreateNode(cm, 2, 2); |
---|
| 638 | |
---|
| 639 | last = literals->last; |
---|
| 640 | *(last) = (-c); |
---|
| 641 | last++; |
---|
| 642 | |
---|
| 643 | |
---|
| 644 | /** |
---|
| 645 | SATfirstLit(c) = (int)last; |
---|
| 646 | **/ |
---|
| 647 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 648 | SATnumLits(c) = clauseArray->num; |
---|
| 649 | SATflags(c) |= IsCNFMask; |
---|
| 650 | SATsetInUse(c); |
---|
| 651 | SATnumConflict(c) = 0; |
---|
| 652 | |
---|
| 653 | size = clauseArray->num; |
---|
| 654 | space = clauseArray->space; |
---|
| 655 | for(i=0; i<size; i++, space++) { |
---|
| 656 | v = *space; |
---|
| 657 | inverted = !SATisInverted(v); |
---|
| 658 | v = SATnormalNode(v); |
---|
| 659 | |
---|
| 660 | *(last) = ((v^inverted) << 2); |
---|
| 661 | last++; |
---|
| 662 | |
---|
| 663 | var = SATgetVariable(v); |
---|
| 664 | if(inverted){ |
---|
| 665 | if(fromDistill) |
---|
| 666 | (var->litsCount[0])++; |
---|
| 667 | (var->conflictLits[0])++; |
---|
| 668 | } |
---|
| 669 | else { |
---|
| 670 | if(fromDistill) |
---|
| 671 | (var->litsCount[1])++; |
---|
| 672 | (var->conflictLits[1])++; |
---|
| 673 | } |
---|
| 674 | } |
---|
| 675 | *(last) = (-c); |
---|
| 676 | last++; |
---|
| 677 | |
---|
| 678 | literals->last = last; |
---|
| 679 | |
---|
| 680 | |
---|
| 681 | /* Bing: UNSAT core generation */ |
---|
| 682 | if(clauseArray->num>1){ |
---|
| 683 | maxLevel = -1; |
---|
| 684 | maxIndex = -1; |
---|
| 685 | otherWLIndex = -1; |
---|
| 686 | space = clauseArray->space; |
---|
| 687 | for(i=0; i<size; i++, space++) { |
---|
| 688 | v = *space; |
---|
| 689 | inverted = SATisInverted(v); |
---|
| 690 | v = SATnormalNode(v); |
---|
| 691 | value = SATvalue(v); |
---|
| 692 | if(value == 2) { |
---|
| 693 | sat_AddWL(cm, c, i, 1); |
---|
| 694 | otherWLIndex = i; |
---|
| 695 | break; |
---|
| 696 | } |
---|
| 697 | else { |
---|
| 698 | level = SATlevel(v); |
---|
| 699 | if(level > maxLevel) { |
---|
| 700 | maxLevel = level; |
---|
| 701 | maxIndex = i; |
---|
| 702 | } |
---|
| 703 | } |
---|
| 704 | } |
---|
| 705 | if(i >= size) { |
---|
| 706 | sat_AddWL(cm, c, maxIndex, 1); |
---|
| 707 | otherWLIndex = maxIndex; |
---|
| 708 | } |
---|
| 709 | |
---|
| 710 | maxLevel = -1; |
---|
| 711 | maxIndex = -1; |
---|
| 712 | space = clauseArray->space+size-1; |
---|
| 713 | for(i=size-1; i>=0; i--, space--) { |
---|
| 714 | v = *space; |
---|
| 715 | inverted = SATisInverted(v); |
---|
| 716 | v = SATnormalNode(v); |
---|
| 717 | value = SATvalue(v); |
---|
| 718 | if(i != otherWLIndex) { |
---|
| 719 | if(value == 2) { |
---|
| 720 | sat_AddWL(cm, c, i, -1); |
---|
| 721 | break; |
---|
| 722 | } |
---|
| 723 | else { |
---|
| 724 | level = SATlevel(v); |
---|
| 725 | if(level > maxLevel) { |
---|
| 726 | maxLevel = level; |
---|
| 727 | maxIndex = i; |
---|
| 728 | } |
---|
| 729 | } |
---|
| 730 | } |
---|
| 731 | } |
---|
| 732 | if(i < 0) |
---|
| 733 | sat_AddWL(cm, c, maxIndex, -1); |
---|
| 734 | } |
---|
| 735 | |
---|
| 736 | if(objectFlag)SATflags(c) |= ObjMask; |
---|
| 737 | else SATflags(c) |= NonobjMask; |
---|
| 738 | /*SATflags(c) |= IsConflictMask;*/ |
---|
| 739 | //Bing:change?? |
---|
| 740 | if(!cm->option->coreGeneration) |
---|
| 741 | SATflags(c) |= IsConflictMask; |
---|
| 742 | |
---|
| 743 | if(objectFlag) { |
---|
| 744 | stats->nInitObjConflictCl++; |
---|
| 745 | stats->nInitObjConflictLit += clauseArray->num; |
---|
| 746 | stats->nObjConflictCl++; |
---|
| 747 | stats->nObjConflictLit += clauseArray->num; |
---|
| 748 | } |
---|
| 749 | else { |
---|
| 750 | stats->nInitNonobjConflictCl++; |
---|
| 751 | stats->nInitNonobjConflictLit += clauseArray->num; |
---|
| 752 | stats->nObjConflictCl++; |
---|
| 753 | stats->nObjConflictLit += clauseArray->num; |
---|
| 754 | } |
---|
| 755 | stats->nConflictCl++; |
---|
| 756 | stats->nConflictLit += clauseArray->num; |
---|
| 757 | |
---|
| 758 | return(c); |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | /**Function******************************************************************** |
---|
| 762 | |
---|
| 763 | Synopsis [ Add clause into clause database] |
---|
| 764 | |
---|
| 765 | Description [ Add clause into clause database] |
---|
| 766 | |
---|
| 767 | SideEffects [] |
---|
| 768 | |
---|
| 769 | SeeAlso [] |
---|
| 770 | |
---|
| 771 | ******************************************************************************/ |
---|
| 772 | long |
---|
| 773 | sat_AddClause( |
---|
| 774 | satManager_t *cm, |
---|
| 775 | satArray_t *clauseArray) |
---|
| 776 | { |
---|
| 777 | satLiteralDB_t *literals; |
---|
| 778 | long c, v; |
---|
| 779 | int inverted; |
---|
| 780 | long *last, *space; |
---|
| 781 | int i, size; |
---|
| 782 | int maxLevel, maxIndex; |
---|
| 783 | int value, level; |
---|
| 784 | int otherWLIndex; |
---|
| 785 | |
---|
| 786 | literals = cm->literals; |
---|
| 787 | |
---|
| 788 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 789 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 790 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 791 | cm->comment); |
---|
| 792 | exit(0); |
---|
| 793 | } |
---|
| 794 | } |
---|
| 795 | c = 0; |
---|
| 796 | if(cm->unusedAigQueue) |
---|
| 797 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 798 | if(c == 0) |
---|
| 799 | c = sat_CreateNode(cm, 2, 2); |
---|
| 800 | |
---|
| 801 | last = literals->last; |
---|
| 802 | *(last) = (-c); |
---|
| 803 | last++; |
---|
| 804 | |
---|
| 805 | /** |
---|
| 806 | SATfirstLit(c) = (int)last; |
---|
| 807 | **/ |
---|
| 808 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 809 | SATnumLits(c) = clauseArray->num; |
---|
| 810 | SATflags(c) |= IsCNFMask; |
---|
| 811 | SATsetInUse(c); |
---|
| 812 | SATnumConflict(c) = 0; |
---|
| 813 | |
---|
| 814 | size = clauseArray->num; |
---|
| 815 | space = clauseArray->space; |
---|
| 816 | for(i=0; i<size; i++, space++) { |
---|
| 817 | v = *space; |
---|
| 818 | inverted = !SATisInverted(v); |
---|
| 819 | v = SATnormalNode(v); |
---|
| 820 | |
---|
| 821 | *(last) = ((v^inverted) << 2); |
---|
| 822 | last++; |
---|
| 823 | } |
---|
| 824 | *(last) = (-c); |
---|
| 825 | last++; |
---|
| 826 | |
---|
| 827 | literals->last = last; |
---|
| 828 | |
---|
| 829 | maxLevel = -1; |
---|
| 830 | maxIndex = -1; |
---|
| 831 | otherWLIndex = -1; |
---|
| 832 | space = clauseArray->space; |
---|
| 833 | for(i=0; i<size; i++, space++) { |
---|
| 834 | v = *space; |
---|
| 835 | inverted = SATisInverted(v); |
---|
| 836 | v = SATnormalNode(v); |
---|
| 837 | value = SATvalue(v); |
---|
| 838 | if(value == 2) { |
---|
| 839 | sat_AddWL(cm, c, i, 1); |
---|
| 840 | otherWLIndex = i; |
---|
| 841 | break; |
---|
| 842 | } |
---|
| 843 | else { |
---|
| 844 | level = SATlevel(v); |
---|
| 845 | if(level > maxLevel) { |
---|
| 846 | maxLevel = level; |
---|
| 847 | maxIndex = i; |
---|
| 848 | } |
---|
| 849 | } |
---|
| 850 | } |
---|
| 851 | if(i >= size) { |
---|
| 852 | sat_AddWL(cm, c, maxIndex, 1); |
---|
| 853 | otherWLIndex = maxIndex; |
---|
| 854 | } |
---|
| 855 | |
---|
| 856 | maxLevel = -1; |
---|
| 857 | maxIndex = -1; |
---|
| 858 | space = clauseArray->space+size-1; |
---|
| 859 | for(i=size-1; i>=0; i--, space--) { |
---|
| 860 | v = *space; |
---|
| 861 | inverted = SATisInverted(v); |
---|
| 862 | v = SATnormalNode(v); |
---|
| 863 | value = SATvalue(v); |
---|
| 864 | if(i != otherWLIndex) { |
---|
| 865 | if(value == 2) { |
---|
| 866 | sat_AddWL(cm, c, i, -1); |
---|
| 867 | break; |
---|
| 868 | } |
---|
| 869 | else { |
---|
| 870 | level = SATlevel(v); |
---|
| 871 | if(level > maxLevel) { |
---|
| 872 | maxLevel = level; |
---|
| 873 | maxIndex = i; |
---|
| 874 | } |
---|
| 875 | } |
---|
| 876 | } |
---|
| 877 | } |
---|
| 878 | if(i < 0) |
---|
| 879 | sat_AddWL(cm, c, maxIndex, -1); |
---|
| 880 | |
---|
| 881 | |
---|
| 882 | return(c); |
---|
| 883 | } |
---|
| 884 | |
---|
| 885 | /**Function******************************************************************** |
---|
| 886 | |
---|
| 887 | Synopsis [ Add clause into clause database] |
---|
| 888 | |
---|
| 889 | Description [ Add clause into clause database] |
---|
| 890 | |
---|
| 891 | SideEffects [] |
---|
| 892 | |
---|
| 893 | SeeAlso [] |
---|
| 894 | |
---|
| 895 | ******************************************************************************/ |
---|
| 896 | long |
---|
| 897 | sat_AddBlockingClause( |
---|
| 898 | satManager_t *cm, |
---|
| 899 | satArray_t *clauseArray) |
---|
| 900 | { |
---|
| 901 | satLiteralDB_t *literals; |
---|
| 902 | satStatistics_t *stats; |
---|
| 903 | long c, v; |
---|
| 904 | int inverted; |
---|
| 905 | long *last, *space; |
---|
| 906 | int i, size; |
---|
| 907 | int maxLevel, maxIndex; |
---|
| 908 | int value, level; |
---|
| 909 | int otherWLIndex; |
---|
| 910 | |
---|
| 911 | literals = cm->literals; |
---|
| 912 | stats = cm->each; |
---|
| 913 | |
---|
| 914 | while(literals->last + clauseArray->num + 2 >= literals->end) { |
---|
| 915 | if(!sat_EnlargeLiteralDB(cm)) { |
---|
| 916 | fprintf(cm->stdErr, "%s ERROR : Cannot alloc memory for LiteralDB\n", |
---|
| 917 | cm->comment); |
---|
| 918 | exit(0); |
---|
| 919 | } |
---|
| 920 | } |
---|
| 921 | |
---|
| 922 | if(clauseArray->num == 1) |
---|
| 923 | return(sat_AddUnitBlockingClause(cm, clauseArray)); |
---|
| 924 | |
---|
| 925 | c = 0; |
---|
| 926 | if(cm->unusedAigQueue) |
---|
| 927 | c = sat_Dequeue(cm->unusedAigQueue); |
---|
| 928 | if(c == 0) |
---|
| 929 | c = sat_CreateNode(cm, 2, 2); |
---|
| 930 | |
---|
| 931 | last = literals->last; |
---|
| 932 | *(last) = (-c); |
---|
| 933 | last++; |
---|
| 934 | |
---|
| 935 | /** |
---|
| 936 | SATfirstLit(c) = (int)last; |
---|
| 937 | **/ |
---|
| 938 | (cm->nodesArray[c+satFirstLit]) = (long)last; |
---|
| 939 | SATnumLits(c) = clauseArray->num; |
---|
| 940 | SATflags(c) |= IsCNFMask; |
---|
| 941 | SATsetInUse(c); |
---|
| 942 | SATnumConflict(c) = 0; |
---|
| 943 | |
---|
| 944 | size = clauseArray->num; |
---|
| 945 | space = clauseArray->space; |
---|
| 946 | for(i=0; i<size; i++, space++) { |
---|
| 947 | v = *space; |
---|
| 948 | inverted = !SATisInverted(v); |
---|
| 949 | v = SATnormalNode(v); |
---|
| 950 | |
---|
| 951 | *(last) = ((v^inverted) << 2); |
---|
| 952 | last++; |
---|
| 953 | } |
---|
| 954 | *(last) = (-c); |
---|
| 955 | last++; |
---|
| 956 | |
---|
| 957 | literals->last = last; |
---|
| 958 | |
---|
| 959 | maxLevel = -1; |
---|
| 960 | maxIndex = -1; |
---|
| 961 | otherWLIndex = -1; |
---|
| 962 | space = clauseArray->space; |
---|
| 963 | for(i=0; i<size; i++, space++) { |
---|
| 964 | v = *space; |
---|
| 965 | inverted = SATisInverted(v); |
---|
| 966 | v = SATnormalNode(v); |
---|
| 967 | value = SATvalue(v); |
---|
| 968 | if(value == 2) { |
---|
| 969 | sat_AddWL(cm, c, i, 1); |
---|
| 970 | otherWLIndex = i; |
---|
| 971 | break; |
---|
| 972 | } |
---|
| 973 | else { |
---|
| 974 | level = SATlevel(v); |
---|
| 975 | if(level > maxLevel) { |
---|
| 976 | maxLevel = level; |
---|
| 977 | maxIndex = i; |
---|
| 978 | } |
---|
| 979 | } |
---|
| 980 | } |
---|
| 981 | if(i >= size) { |
---|
| 982 | sat_AddWL(cm, c, maxIndex, 1); |
---|
| 983 | otherWLIndex = maxIndex; |
---|
| 984 | } |
---|
| 985 | |
---|
| 986 | maxLevel = -1; |
---|
| 987 | maxIndex = -1; |
---|
| 988 | space = clauseArray->space+size-1; |
---|
| 989 | for(i=size-1; i>=0; i--, space--) { |
---|
| 990 | v = *space; |
---|
| 991 | inverted = SATisInverted(v); |
---|
| 992 | v = SATnormalNode(v); |
---|
| 993 | value = SATvalue(v); |
---|
| 994 | if(i != otherWLIndex) { |
---|
| 995 | if(value == 2) { |
---|
| 996 | sat_AddWL(cm, c, i, -1); |
---|
| 997 | break; |
---|
| 998 | } |
---|
| 999 | else { |
---|
| 1000 | level = SATlevel(v); |
---|
| 1001 | if(level > maxLevel) { |
---|
| 1002 | maxLevel = level; |
---|
| 1003 | maxIndex = i; |
---|
| 1004 | } |
---|
| 1005 | } |
---|
| 1006 | } |
---|
| 1007 | } |
---|
| 1008 | if(i < 0) |
---|
| 1009 | sat_AddWL(cm, c, maxIndex, -1); |
---|
| 1010 | |
---|
| 1011 | SATflags(c) |= IsBlockingMask; |
---|
| 1012 | |
---|
| 1013 | stats = cm->each; |
---|
| 1014 | stats->nBlockingCl++; |
---|
| 1015 | stats->nBlockingLit += clauseArray->num; |
---|
| 1016 | |
---|
| 1017 | return(c); |
---|
| 1018 | } |
---|
| 1019 | |
---|
| 1020 | |
---|
| 1021 | /**Function******************************************************************** |
---|
| 1022 | |
---|
| 1023 | Synopsis [ Make literal watched ] |
---|
| 1024 | |
---|
| 1025 | Description [ Make literal watched ] |
---|
| 1026 | |
---|
| 1027 | SideEffects [] |
---|
| 1028 | |
---|
| 1029 | SeeAlso [] |
---|
| 1030 | |
---|
| 1031 | ******************************************************************************/ |
---|
| 1032 | void |
---|
| 1033 | sat_AddWL( |
---|
| 1034 | satManager_t *cm, |
---|
| 1035 | long c, |
---|
| 1036 | int index, |
---|
| 1037 | int dir) |
---|
| 1038 | { |
---|
| 1039 | long *plit, v; |
---|
| 1040 | int inverted; |
---|
| 1041 | satVariable_t *var; |
---|
| 1042 | |
---|
| 1043 | plit = (long*)SATfirstLit(c) + index; |
---|
| 1044 | v = SATgetNode(*plit); |
---|
| 1045 | inverted = !SATisInverted(v); |
---|
| 1046 | v = SATnormalNode(v); |
---|
| 1047 | var = SATgetVariable(v); |
---|
| 1048 | |
---|
| 1049 | if(var->wl[inverted] == 0) |
---|
| 1050 | var->wl[inverted] = sat_ArrayAlloc(4); |
---|
| 1051 | sat_ArrayInsert(var->wl[inverted], (long)plit); |
---|
| 1052 | SATsetWL(plit, dir); |
---|
| 1053 | } |
---|
| 1054 | |
---|
| 1055 | |
---|
| 1056 | /**Function******************************************************************** |
---|
| 1057 | |
---|
| 1058 | Synopsis [ Allocate array ] |
---|
| 1059 | |
---|
| 1060 | Description [ Allocate array ] |
---|
| 1061 | |
---|
| 1062 | SideEffects [] |
---|
| 1063 | |
---|
| 1064 | SeeAlso [] |
---|
| 1065 | |
---|
| 1066 | ******************************************************************************/ |
---|
| 1067 | satArray_t * |
---|
| 1068 | sat_ArrayAlloc(long number) |
---|
| 1069 | { |
---|
| 1070 | satArray_t *array; |
---|
| 1071 | |
---|
| 1072 | array = ALLOC(satArray_t, 1); |
---|
| 1073 | if (array) { |
---|
| 1074 | array->num = 0; |
---|
| 1075 | array->size = number; |
---|
| 1076 | array->space = ALLOC(long, number); |
---|
| 1077 | if (array->space) { |
---|
| 1078 | return array; |
---|
| 1079 | } |
---|
| 1080 | } |
---|
| 1081 | //Bing: To avoid segmentation fault |
---|
| 1082 | if(array==0 || (number>0&&array->space==0)){ |
---|
| 1083 | printf("can't alloc mem, exit\n"); |
---|
| 1084 | exit(0); |
---|
| 1085 | } |
---|
| 1086 | return 0; |
---|
| 1087 | } |
---|
| 1088 | |
---|
| 1089 | /**Function******************************************************************** |
---|
| 1090 | |
---|
| 1091 | Synopsis [ Duplicate array ] |
---|
| 1092 | |
---|
| 1093 | Description [ Duplicate array ] |
---|
| 1094 | |
---|
| 1095 | SideEffects [] |
---|
| 1096 | |
---|
| 1097 | SeeAlso [] |
---|
| 1098 | |
---|
| 1099 | ******************************************************************************/ |
---|
| 1100 | satArray_t * |
---|
| 1101 | sat_ArrayDuplicate(satArray_t *old) |
---|
| 1102 | { |
---|
| 1103 | satArray_t *array; |
---|
| 1104 | |
---|
| 1105 | array = (satArray_t *)malloc(sizeof(satArray_t)); |
---|
| 1106 | if (array) { |
---|
| 1107 | array->num = old->num; |
---|
| 1108 | array->size = old->num; |
---|
| 1109 | array->space = (long *)malloc(sizeof(long) * old->num); |
---|
| 1110 | memcpy(array->space, old->space, sizeof(long)*old->num); |
---|
| 1111 | if (array->space) { |
---|
| 1112 | return array; |
---|
| 1113 | } |
---|
| 1114 | } |
---|
| 1115 | return 0; |
---|
| 1116 | } |
---|
| 1117 | |
---|
| 1118 | /**Function******************************************************************** |
---|
| 1119 | |
---|
| 1120 | Synopsis [ Insert entries to array ] |
---|
| 1121 | |
---|
| 1122 | Description [ Insert entries to array ] |
---|
| 1123 | |
---|
| 1124 | SideEffects [] |
---|
| 1125 | |
---|
| 1126 | SeeAlso [] |
---|
| 1127 | |
---|
| 1128 | ******************************************************************************/ |
---|
| 1129 | void |
---|
| 1130 | sat_ArrayInsert(satArray_t *array, long datum) |
---|
| 1131 | { |
---|
| 1132 | if(array->num < array->size) { |
---|
| 1133 | array->space[array->num++] = datum; |
---|
| 1134 | } |
---|
| 1135 | else { |
---|
| 1136 | array->size <<= 1; |
---|
| 1137 | array->space = REALLOC(long, array->space, array->size); |
---|
| 1138 | if(array->space == 0) { |
---|
| 1139 | fprintf(stdout, "ERROR : Can't allocate memory in sat_ArrayInsert\n"); |
---|
| 1140 | exit(0); |
---|
| 1141 | } |
---|
| 1142 | array->space[array->num++] = datum; |
---|
| 1143 | } |
---|
| 1144 | } |
---|
| 1145 | |
---|
| 1146 | /**Function******************************************************************** |
---|
| 1147 | |
---|
| 1148 | Synopsis [ Free array ] |
---|
| 1149 | |
---|
| 1150 | Description [ Free array ] |
---|
| 1151 | |
---|
| 1152 | SideEffects [] |
---|
| 1153 | |
---|
| 1154 | SeeAlso [] |
---|
| 1155 | |
---|
| 1156 | ******************************************************************************/ |
---|
| 1157 | void |
---|
| 1158 | sat_ArrayFree(satArray_t *array) |
---|
| 1159 | { |
---|
| 1160 | free(array->space); |
---|
| 1161 | free(array); |
---|
| 1162 | } |
---|
| 1163 | |
---|
| 1164 | |
---|
| 1165 | /**Function******************************************************************** |
---|
| 1166 | |
---|
| 1167 | Synopsis [ Create queue ] |
---|
| 1168 | |
---|
| 1169 | Description [ Create queue ] |
---|
| 1170 | |
---|
| 1171 | SideEffects [] |
---|
| 1172 | |
---|
| 1173 | SeeAlso [] |
---|
| 1174 | |
---|
| 1175 | ******************************************************************************/ |
---|
| 1176 | satQueue_t * |
---|
| 1177 | sat_CreateQueue( long MaxElements ) |
---|
| 1178 | { |
---|
| 1179 | satQueue_t *Q; |
---|
| 1180 | |
---|
| 1181 | Q = ALLOC(satQueue_t, 1); |
---|
| 1182 | if( Q == NULL ) |
---|
| 1183 | fprintf(stderr, "Out of space!!!\n" ); |
---|
| 1184 | |
---|
| 1185 | Q->array = ALLOC(long, MaxElements ); |
---|
| 1186 | if( Q->array == NULL ) |
---|
| 1187 | fprintf(stderr, "Out of space!!!\n" ); |
---|
| 1188 | Q->max = MaxElements; |
---|
| 1189 | Q->size = 0; |
---|
| 1190 | Q->front = 1; |
---|
| 1191 | Q->rear = 0; |
---|
| 1192 | return Q; |
---|
| 1193 | } |
---|
| 1194 | |
---|
| 1195 | /**Function******************************************************************** |
---|
| 1196 | |
---|
| 1197 | Synopsis [ Free queue ] |
---|
| 1198 | |
---|
| 1199 | Description [ Free queue ] |
---|
| 1200 | |
---|
| 1201 | SideEffects [] |
---|
| 1202 | |
---|
| 1203 | SeeAlso [] |
---|
| 1204 | |
---|
| 1205 | ******************************************************************************/ |
---|
| 1206 | void |
---|
| 1207 | sat_FreeQueue( satQueue_t *Q ) |
---|
| 1208 | { |
---|
| 1209 | if( Q != NULL ) { |
---|
| 1210 | free( Q->array ); |
---|
| 1211 | free( Q ); |
---|
| 1212 | } |
---|
| 1213 | } |
---|
| 1214 | |
---|
| 1215 | |
---|
| 1216 | /**Function******************************************************************** |
---|
| 1217 | |
---|
| 1218 | Synopsis [ Enqueue node ] |
---|
| 1219 | |
---|
| 1220 | Description [ Enqueue node ] |
---|
| 1221 | |
---|
| 1222 | SideEffects [] |
---|
| 1223 | |
---|
| 1224 | SeeAlso [] |
---|
| 1225 | |
---|
| 1226 | ******************************************************************************/ |
---|
| 1227 | void |
---|
| 1228 | sat_Enqueue(satQueue_t *Q, long v) |
---|
| 1229 | { |
---|
| 1230 | long *arr, *oarr; |
---|
| 1231 | long rear; |
---|
| 1232 | |
---|
| 1233 | if(Q->size < Q->max) { |
---|
| 1234 | Q->size++; |
---|
| 1235 | rear = Q->rear; |
---|
| 1236 | rear = (++(rear) == Q->max) ? 0 : rear; |
---|
| 1237 | Q->array[rear] = v; |
---|
| 1238 | Q->rear = rear; |
---|
| 1239 | } |
---|
| 1240 | else { |
---|
| 1241 | arr = ALLOC(long, Q->size * 2 ); |
---|
| 1242 | if(arr == NULL ) |
---|
| 1243 | fprintf(stderr, "Out of space!!!\n" ); |
---|
| 1244 | oarr = Q->array; |
---|
| 1245 | if(Q->front > Q->rear) { |
---|
| 1246 | memcpy(&(arr[1]), &(oarr[Q->front]), |
---|
| 1247 | sizeof(long) *(Q->max-Q->front)); |
---|
| 1248 | memcpy(&(arr[Q->size-Q->front+1]), &(oarr[0]), |
---|
| 1249 | sizeof(long) *(Q->rear+1)); |
---|
| 1250 | } |
---|
| 1251 | else if(Q->front < Q->rear) { |
---|
| 1252 | memcpy(&(arr[1]), &(oarr[Q->front]), sizeof(long) *(Q->size)); |
---|
| 1253 | } |
---|
| 1254 | free(oarr); |
---|
| 1255 | Q->array = arr; |
---|
| 1256 | Q->front = 1; |
---|
| 1257 | Q->rear = Q->size; |
---|
| 1258 | Q->max *= 2; |
---|
| 1259 | |
---|
| 1260 | Q->size++; |
---|
| 1261 | rear = Q->rear; |
---|
| 1262 | rear = (++(rear) == Q->max) ? 0 : rear; |
---|
| 1263 | Q->array[rear] = v; |
---|
| 1264 | Q->rear = rear; |
---|
| 1265 | } |
---|
| 1266 | } |
---|
| 1267 | |
---|
| 1268 | |
---|
| 1269 | /**Function******************************************************************** |
---|
| 1270 | |
---|
| 1271 | Synopsis [ Dequeue ] |
---|
| 1272 | |
---|
| 1273 | Description [ Dequeue ] |
---|
| 1274 | |
---|
| 1275 | SideEffects [] |
---|
| 1276 | |
---|
| 1277 | SeeAlso [] |
---|
| 1278 | |
---|
| 1279 | ******************************************************************************/ |
---|
| 1280 | long |
---|
| 1281 | sat_Dequeue( satQueue_t * Q ) |
---|
| 1282 | { |
---|
| 1283 | long front; |
---|
| 1284 | long v; |
---|
| 1285 | |
---|
| 1286 | if(Q->size > 0) { |
---|
| 1287 | Q->size--; |
---|
| 1288 | front = Q->front; |
---|
| 1289 | v = Q->array[front]; |
---|
| 1290 | Q->front = (++(front) == Q->max) ? 0 : front; |
---|
| 1291 | return v; |
---|
| 1292 | } |
---|
| 1293 | else |
---|
| 1294 | return(0); |
---|
| 1295 | } |
---|
| 1296 | |
---|
| 1297 | |
---|
| 1298 | /**Function******************************************************************** |
---|
| 1299 | |
---|
| 1300 | Synopsis [ Allocate decision level ] |
---|
| 1301 | |
---|
| 1302 | Description [ Allocate decision level ] |
---|
| 1303 | |
---|
| 1304 | SideEffects [] |
---|
| 1305 | |
---|
| 1306 | SeeAlso [] |
---|
| 1307 | |
---|
| 1308 | ******************************************************************************/ |
---|
| 1309 | satLevel_t * |
---|
| 1310 | sat_AllocLevel( |
---|
| 1311 | satManager_t *cm) |
---|
| 1312 | { |
---|
| 1313 | satStatistics_t *stats; |
---|
| 1314 | satLevel_t *d; |
---|
| 1315 | satArray_t *implied; |
---|
| 1316 | int size; |
---|
| 1317 | |
---|
| 1318 | if(cm->decisionHeadSize == 0) { |
---|
| 1319 | size = cm->currentDecision+2; |
---|
| 1320 | cm->decisionHeadSize = size; |
---|
| 1321 | cm->decisionHead = REALLOC(satLevel_t, cm->decisionHead, size); |
---|
| 1322 | memset(cm->decisionHead, 0, sizeof(satLevel_t) * size); |
---|
| 1323 | } |
---|
| 1324 | |
---|
| 1325 | if(cm->currentDecision+1 >= cm->decisionHeadSize) { |
---|
| 1326 | size = cm->decisionHeadSize; |
---|
| 1327 | cm->decisionHeadSize <<=1; |
---|
| 1328 | cm->decisionHead = REALLOC(satLevel_t, cm->decisionHead, |
---|
| 1329 | cm->decisionHeadSize); |
---|
| 1330 | memset(cm->decisionHead+size, 0, sizeof(satLevel_t) * size); |
---|
| 1331 | } |
---|
| 1332 | |
---|
| 1333 | cm->currentDecision++; |
---|
| 1334 | d = &(cm->decisionHead[cm->currentDecision]); |
---|
| 1335 | implied = d->implied; |
---|
| 1336 | memset(d, 0, sizeof(satLevel_t)); |
---|
| 1337 | d->implied = implied; |
---|
| 1338 | if(d->implied == 0){ |
---|
| 1339 | d->implied = sat_ArrayAlloc(64); |
---|
| 1340 | //Bing: avoid seg fault |
---|
| 1341 | if(d->implied == 0){ |
---|
| 1342 | printf("out of mem, exit\n"); |
---|
| 1343 | exit(0); |
---|
| 1344 | } |
---|
| 1345 | } |
---|
| 1346 | |
---|
| 1347 | d->level = cm->currentDecision; |
---|
| 1348 | d->conflict = 0; |
---|
| 1349 | |
---|
| 1350 | stats = cm->each; |
---|
| 1351 | if(stats->maxDecisionLevel < d->level) |
---|
| 1352 | stats->maxDecisionLevel = d->level; |
---|
| 1353 | |
---|
| 1354 | return(d); |
---|
| 1355 | |
---|
| 1356 | } |
---|
| 1357 | |
---|
| 1358 | /**Function******************************************************************** |
---|
| 1359 | |
---|
| 1360 | Synopsis [ Clean decision level when backtracking ] |
---|
| 1361 | |
---|
| 1362 | Description [ Clean decision level when backtracking ] |
---|
| 1363 | |
---|
| 1364 | SideEffects [] |
---|
| 1365 | |
---|
| 1366 | SeeAlso [] |
---|
| 1367 | |
---|
| 1368 | ******************************************************************************/ |
---|
| 1369 | void |
---|
| 1370 | sat_CleanLevel( |
---|
| 1371 | satLevel_t *d) |
---|
| 1372 | { |
---|
| 1373 | if(d->implied) |
---|
| 1374 | d->implied->num = 0; |
---|
| 1375 | if(d->satisfied) |
---|
| 1376 | d->satisfied->num = 0; |
---|
| 1377 | d->currentVarPos = 0; |
---|
| 1378 | } |
---|
| 1379 | |
---|
| 1380 | /**Function******************************************************************** |
---|
| 1381 | |
---|
| 1382 | Synopsis [ Delete conflict clauses ] |
---|
| 1383 | |
---|
| 1384 | Description [ Delete conflict clauses ] |
---|
| 1385 | |
---|
| 1386 | SideEffects [] |
---|
| 1387 | |
---|
| 1388 | SeeAlso [] |
---|
| 1389 | |
---|
| 1390 | ******************************************************************************/ |
---|
| 1391 | void |
---|
| 1392 | sat_ClauseDeletion(satManager_t *cm) |
---|
| 1393 | { |
---|
| 1394 | satLiteralDB_t *literals; |
---|
| 1395 | satOption_t *option; |
---|
| 1396 | long v, *plit, nv, lit; |
---|
| 1397 | int size, n0, n1x, deleteFlag; |
---|
| 1398 | int unrelevance; |
---|
| 1399 | int inverted, i; |
---|
| 1400 | int value; |
---|
| 1401 | double ratio; |
---|
| 1402 | |
---|
| 1403 | /** |
---|
| 1404 | LATEST_ACTIVITY_DELETION |
---|
| 1405 | MAX_UNRELEVANCE_DELETION |
---|
| 1406 | SIMPLE_LATEST_DELETION |
---|
| 1407 | **/ |
---|
| 1408 | |
---|
| 1409 | option = cm->option; |
---|
| 1410 | if(option->clauseDeletionHeuristic == 0) return; |
---|
| 1411 | |
---|
| 1412 | literals = cm->literals; |
---|
| 1413 | for(v=cm->beginConflict; v<cm->nodesArraySize; v+=satNodeSize) { |
---|
| 1414 | if(!(SATflags(v) & IsCNFMask)) continue; |
---|
| 1415 | if(SATreadInUse(v) == 0) continue; |
---|
| 1416 | |
---|
| 1417 | if(option->incPreserveNonobjective && (SATflags(v) & NonobjMask)) |
---|
| 1418 | continue; |
---|
| 1419 | |
---|
| 1420 | size = SATnumLits(v); |
---|
| 1421 | if(size < option->minLitsLimit) continue; |
---|
| 1422 | |
---|
| 1423 | plit = (long*)SATfirstLit(v); |
---|
| 1424 | |
---|
| 1425 | unrelevance = option->unrelevance; |
---|
| 1426 | if(option->clauseDeletionHeuristic & SIMPLE_LATEST_DELETION) { |
---|
| 1427 | ratio = (double)(plit-literals->initialSize)/ |
---|
| 1428 | (double)(literals->last-literals->initialSize); |
---|
| 1429 | if(ratio > 0.8) unrelevance <<= 3; |
---|
| 1430 | } |
---|
| 1431 | if(!(option->clauseDeletionHeuristic & MAX_UNRELEVANCE_DELETION)) { |
---|
| 1432 | unrelevance = MAXINT; |
---|
| 1433 | } |
---|
| 1434 | |
---|
| 1435 | n0 = n1x = 0; |
---|
| 1436 | deleteFlag = 0; |
---|
| 1437 | for(i=0; i<size; i++, plit++) { |
---|
| 1438 | lit = *plit; |
---|
| 1439 | nv = SATgetNode(lit); |
---|
| 1440 | inverted = SATisInverted(nv); |
---|
| 1441 | nv = SATnormalNode(nv); |
---|
| 1442 | value = SATvalue(nv) ^ inverted; |
---|
| 1443 | |
---|
| 1444 | if(value == 0) n0++; |
---|
| 1445 | else if(value == 1) { |
---|
| 1446 | n1x++; |
---|
| 1447 | if(SATlevel(nv) == 0 && cm->option->coreGeneration == 0) |
---|
| 1448 | deleteFlag = 1; |
---|
| 1449 | } |
---|
| 1450 | else n1x++; |
---|
| 1451 | |
---|
| 1452 | if(deleteFlag) { |
---|
| 1453 | sat_DeleteClause(cm, v); |
---|
| 1454 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 1455 | break; |
---|
| 1456 | } |
---|
| 1457 | if((size > option->maxLitsLimit) && (n1x > 1)) { |
---|
| 1458 | sat_DeleteClause(cm, v); |
---|
| 1459 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 1460 | break; |
---|
| 1461 | } |
---|
| 1462 | if(n1x > unrelevance) { |
---|
| 1463 | sat_DeleteClause(cm, v); |
---|
| 1464 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 1465 | break; |
---|
| 1466 | } |
---|
| 1467 | } |
---|
| 1468 | |
---|
| 1469 | } |
---|
| 1470 | } |
---|
| 1471 | |
---|
| 1472 | /**Function******************************************************************** |
---|
| 1473 | |
---|
| 1474 | Synopsis [ Delete conflict clauses ] |
---|
| 1475 | |
---|
| 1476 | Description [ Delete conflict clauses ] |
---|
| 1477 | |
---|
| 1478 | SideEffects [] |
---|
| 1479 | |
---|
| 1480 | SeeAlso [] |
---|
| 1481 | |
---|
| 1482 | ******************************************************************************/ |
---|
| 1483 | void |
---|
| 1484 | sat_DeleteClause( |
---|
| 1485 | satManager_t *cm, |
---|
| 1486 | long v) |
---|
| 1487 | { |
---|
| 1488 | satStatistics_t *stats; |
---|
| 1489 | int size, i; |
---|
| 1490 | long nv, *plit; |
---|
| 1491 | |
---|
| 1492 | stats = cm->each; |
---|
| 1493 | size = SATnumLits(v); |
---|
| 1494 | stats->nDeletedCl++; |
---|
| 1495 | stats->nDeletedLit += size; |
---|
| 1496 | |
---|
| 1497 | /** SATresetInUse(v); **/ |
---|
| 1498 | SATflags(v) = 0; |
---|
| 1499 | SATflags(v) |= IsCNFMask; |
---|
| 1500 | |
---|
| 1501 | for(i=0, plit=(long*)SATfirstLit(v); i<size; i++, plit++) { |
---|
| 1502 | nv = SATgetNode(*plit); |
---|
| 1503 | *plit = 0; |
---|
| 1504 | } |
---|
| 1505 | } |
---|
| 1506 | |
---|
| 1507 | /**Function******************************************************************** |
---|
| 1508 | |
---|
| 1509 | Synopsis [ Compact clause database ] |
---|
| 1510 | |
---|
| 1511 | Description [ Compact clause database ] |
---|
| 1512 | |
---|
| 1513 | SideEffects [] |
---|
| 1514 | |
---|
| 1515 | SeeAlso [] |
---|
| 1516 | |
---|
| 1517 | ******************************************************************************/ |
---|
| 1518 | void |
---|
| 1519 | sat_CompactClauses(satManager_t *cm) |
---|
| 1520 | { |
---|
| 1521 | satLiteralDB_t *literals; |
---|
| 1522 | long *plit, v, lit; |
---|
| 1523 | int i, size, index; |
---|
| 1524 | int inverted; |
---|
| 1525 | satVariable_t *var; |
---|
| 1526 | |
---|
| 1527 | literals = cm->literals; |
---|
| 1528 | size = literals->last - literals->begin; |
---|
| 1529 | |
---|
| 1530 | plit = literals->begin; |
---|
| 1531 | index = literals->initialSize-literals->begin; |
---|
| 1532 | for(i=literals->initialSize-literals->begin; i<size; i++) { |
---|
| 1533 | if(i < 2) { |
---|
| 1534 | plit[index] = plit[i]; |
---|
| 1535 | index++; |
---|
| 1536 | continue; |
---|
| 1537 | } |
---|
| 1538 | |
---|
| 1539 | if(plit[i-1] == 0 && plit[i] < 0) continue; |
---|
| 1540 | else if(plit[i-1] == 0 && plit[i] == 0) continue; |
---|
| 1541 | else if(plit[i-1] < 0 && plit[i] == 0) continue; |
---|
| 1542 | else if(plit[i-1] < 0 && plit[i] < 0 && plit[i+1] == 0) continue; |
---|
| 1543 | else { |
---|
| 1544 | plit[index] = plit[i]; |
---|
| 1545 | index++; |
---|
| 1546 | } |
---|
| 1547 | } |
---|
| 1548 | |
---|
| 1549 | literals->last = literals->begin + index; |
---|
| 1550 | for(v=satNodeSize; v<cm->beginConflict; v+=satNodeSize) { |
---|
| 1551 | if(SATflags(v) & IsCNFMask) continue; |
---|
| 1552 | var = SATgetVariable(v); |
---|
| 1553 | if(var->wl[0]) var->wl[0]->num = 0; |
---|
| 1554 | if(var->wl[1]) var->wl[1]->num = 0; |
---|
| 1555 | } |
---|
| 1556 | |
---|
| 1557 | size = literals->last - literals->begin; |
---|
| 1558 | plit = literals->begin; |
---|
| 1559 | for(i=0; i<size; i++) { |
---|
| 1560 | lit = plit[i]; |
---|
| 1561 | if(lit > 0 && SATisWL(lit)) { |
---|
| 1562 | v = SATgetNode(lit); |
---|
| 1563 | inverted = !(SATisInverted(v)); |
---|
| 1564 | v = SATnormalNode(v); |
---|
| 1565 | var = SATgetVariable(v); |
---|
| 1566 | if(var->wl[inverted] == 0) |
---|
| 1567 | var->wl[inverted] = sat_ArrayAlloc(4); |
---|
| 1568 | sat_ArrayInsert(var->wl[inverted], (long)(&(plit[i]))); |
---|
| 1569 | } |
---|
| 1570 | |
---|
| 1571 | if(lit <= 0) { |
---|
| 1572 | v = -lit; |
---|
| 1573 | /** |
---|
| 1574 | SATfirstLit(v) = (int)(&(plit[i]) - SATnumLits(v)); |
---|
| 1575 | **/ |
---|
| 1576 | (cm->nodesArray[v+satFirstLit]) = (long)(&(plit[i]) - SATnumLits(v)); |
---|
| 1577 | } |
---|
| 1578 | } |
---|
| 1579 | |
---|
| 1580 | plit = literals->last - 1; |
---|
| 1581 | cm->currentTopConflict = plit; |
---|
| 1582 | cm->currentTopConflictCount = 0; |
---|
| 1583 | |
---|
| 1584 | } |
---|
| 1585 | |
---|
| 1586 | /**Function******************************************************************** |
---|
| 1587 | |
---|
| 1588 | Synopsis [ Enlarge clause database ] |
---|
| 1589 | |
---|
| 1590 | Description [ Enlarge clause database ] |
---|
| 1591 | |
---|
| 1592 | SideEffects [] |
---|
| 1593 | |
---|
| 1594 | SeeAlso [] |
---|
| 1595 | |
---|
| 1596 | ******************************************************************************/ |
---|
| 1597 | int |
---|
| 1598 | sat_EnlargeLiteralDB(satManager_t *cm) |
---|
| 1599 | { |
---|
| 1600 | satLiteralDB_t *literals; |
---|
| 1601 | int nLiveConflictCl, nLiveConflictLit; |
---|
| 1602 | double ratio, growRatio; |
---|
| 1603 | double memUsage; |
---|
| 1604 | long *oldBegin, *oldEnd; |
---|
| 1605 | long newSize, oldSize; |
---|
| 1606 | int offset, index, size; |
---|
| 1607 | int i, j, nodesSize; |
---|
| 1608 | long tv; |
---|
| 1609 | int arrSize; |
---|
| 1610 | satVariable_t *var; |
---|
| 1611 | satArray_t *wl; |
---|
| 1612 | satStatistics_t *stats; |
---|
| 1613 | satOption_t *option; |
---|
| 1614 | |
---|
| 1615 | |
---|
| 1616 | literals = cm->literals; |
---|
| 1617 | option = cm->option; |
---|
| 1618 | stats = cm->each; |
---|
| 1619 | |
---|
| 1620 | size = literals->last - literals->begin; |
---|
| 1621 | nLiveConflictCl = cm->initNumClauses + stats->nConflictCl + stats->nBlockingCl - stats->nDeletedCl; |
---|
| 1622 | nLiveConflictLit = cm->initNumLiterals + stats->nBlockingLit + |
---|
| 1623 | stats->nConflictLit - stats->nDeletedLit ; |
---|
| 1624 | ratio = (double)(nLiveConflictLit + (nLiveConflictCl << 1)) / |
---|
| 1625 | (double)(size); |
---|
| 1626 | |
---|
| 1627 | if(ratio < 0.8) { |
---|
| 1628 | sat_CompactClauses(cm); |
---|
| 1629 | return(1); |
---|
| 1630 | } |
---|
| 1631 | |
---|
| 1632 | memUsage = (double)sat_MemUsage(cm); |
---|
| 1633 | growRatio = 1.0; |
---|
| 1634 | if(memUsage < (double)option->memoryLimit/4.0) growRatio = 2.0; |
---|
| 1635 | else if(memUsage < (double)option->memoryLimit/2.0) growRatio = 1.5; |
---|
| 1636 | else if(memUsage < (double)option->memoryLimit*0.8) growRatio = 1.2; |
---|
| 1637 | |
---|
| 1638 | if(growRatio < 1.5) { |
---|
| 1639 | if(ratio < 0.9) { |
---|
| 1640 | sat_CompactClauses(cm); |
---|
| 1641 | return(1); |
---|
| 1642 | } |
---|
| 1643 | } |
---|
| 1644 | |
---|
| 1645 | oldBegin = literals->begin; |
---|
| 1646 | oldEnd = literals->end; |
---|
| 1647 | oldSize = literals->last - literals->begin; |
---|
| 1648 | newSize = oldSize * (int)growRatio; |
---|
| 1649 | |
---|
| 1650 | literals->begin = REALLOC(long, oldBegin, newSize); |
---|
| 1651 | literals->last = literals->begin + oldSize; |
---|
| 1652 | literals->end = literals->begin + newSize; |
---|
| 1653 | |
---|
| 1654 | offset = literals->begin - oldBegin; |
---|
| 1655 | nodesSize = cm->nodesArraySize; |
---|
| 1656 | for(i=satNodeSize; i<nodesSize; i+= satNodeSize) { |
---|
| 1657 | tv = i; |
---|
| 1658 | if(SATflags(tv) & IsCNFMask) { |
---|
| 1659 | if(SATreadInUse(tv)) |
---|
| 1660 | (cm->nodesArray[tv+satFirstLit]) = (long)((long*)(SATfirstLit(tv)) + offset); |
---|
| 1661 | /** |
---|
| 1662 | SATfirstLit(tv) = (int)((int*)(SATfirstLit(tv)) + offset); |
---|
| 1663 | **/ |
---|
| 1664 | } |
---|
| 1665 | else if(SATflags(tv) & IsBDDMask) { |
---|
| 1666 | (cm->nodesArray[tv+satFirstLit]) = (long)((long*)(SATfirstLit(tv)) + offset); |
---|
| 1667 | /** |
---|
| 1668 | SATfirstLit(tv) = (int)((int*)(SATfirstLit(tv)) + offset); |
---|
| 1669 | **/ |
---|
| 1670 | } |
---|
| 1671 | else { |
---|
| 1672 | var = SATgetVariable(tv); |
---|
| 1673 | wl = var->wl[0]; |
---|
| 1674 | if(wl) { |
---|
| 1675 | arrSize = wl->num; |
---|
| 1676 | for(j=0, index=0; j<arrSize; j++) { |
---|
| 1677 | if(wl->space[j] == 0) continue; |
---|
| 1678 | wl->space[j] = (long)(((long*)(wl->space[j])) + offset); |
---|
| 1679 | } |
---|
| 1680 | } |
---|
| 1681 | wl = var->wl[1]; |
---|
| 1682 | if(wl) { |
---|
| 1683 | arrSize = wl->num; |
---|
| 1684 | for(j=0, index=0; j<arrSize; j++) { |
---|
| 1685 | if(wl->space[j] == 0) continue; |
---|
| 1686 | wl->space[j] = (long)(((long*)(wl->space[j])) + offset); |
---|
| 1687 | } |
---|
| 1688 | } |
---|
| 1689 | } |
---|
| 1690 | } |
---|
| 1691 | literals->initialSize = literals->initialSize + offset; |
---|
| 1692 | cm->currentTopConflict += offset; |
---|
| 1693 | |
---|
| 1694 | return(1); |
---|
| 1695 | } |
---|
| 1696 | |
---|
| 1697 | /**Function******************************************************************** |
---|
| 1698 | |
---|
| 1699 | Synopsis [ Allocate clause database ] |
---|
| 1700 | |
---|
| 1701 | Description [ Allocate clause database ] |
---|
| 1702 | |
---|
| 1703 | SideEffects [] |
---|
| 1704 | |
---|
| 1705 | SeeAlso [] |
---|
| 1706 | |
---|
| 1707 | ******************************************************************************/ |
---|
| 1708 | void |
---|
| 1709 | sat_AllocLiteralsDB(satManager_t *cm) |
---|
| 1710 | { |
---|
| 1711 | satLiteralDB_t *literals; |
---|
| 1712 | int size; |
---|
| 1713 | |
---|
| 1714 | literals = cm->literals; |
---|
| 1715 | if(literals) return; |
---|
| 1716 | |
---|
| 1717 | literals = ALLOC(satLiteralDB_t, 1); |
---|
| 1718 | cm->literals = literals; |
---|
| 1719 | |
---|
| 1720 | size = 1024 * 1024; |
---|
| 1721 | literals->begin = ALLOC(long, size); |
---|
| 1722 | *(literals->begin) = 0; |
---|
| 1723 | literals->last = literals->begin + 1; |
---|
| 1724 | literals->end = literals->begin + size; |
---|
| 1725 | /** CONSIDER... **/ |
---|
| 1726 | literals->initialSize = literals->last; |
---|
| 1727 | |
---|
| 1728 | } |
---|
| 1729 | |
---|
| 1730 | |
---|
| 1731 | /**Function******************************************************************** |
---|
| 1732 | |
---|
| 1733 | Synopsis [ Free clause database ] |
---|
| 1734 | |
---|
| 1735 | Description [ Free clause database ] |
---|
| 1736 | |
---|
| 1737 | SideEffects [] |
---|
| 1738 | |
---|
| 1739 | SeeAlso [] |
---|
| 1740 | |
---|
| 1741 | ******************************************************************************/ |
---|
| 1742 | void |
---|
| 1743 | sat_FreeLiteralsDB(satLiteralDB_t *literals) |
---|
| 1744 | { |
---|
| 1745 | |
---|
| 1746 | if(literals == 0) return; |
---|
| 1747 | free(literals->begin); |
---|
| 1748 | literals->begin = 0; |
---|
| 1749 | free(literals); |
---|
| 1750 | } |
---|
| 1751 | |
---|
| 1752 | /**Function******************************************************************** |
---|
| 1753 | |
---|
| 1754 | Synopsis [ clean value and flag of node ] |
---|
| 1755 | |
---|
| 1756 | Description [ clean value and flag of node ] |
---|
| 1757 | |
---|
| 1758 | SideEffects [] |
---|
| 1759 | |
---|
| 1760 | SeeAlso [] |
---|
| 1761 | |
---|
| 1762 | ******************************************************************************/ |
---|
| 1763 | void |
---|
| 1764 | sat_CleanDatabase(satManager_t *cm) |
---|
| 1765 | { |
---|
| 1766 | long v, i; |
---|
| 1767 | |
---|
| 1768 | for(i=satNodeSize; i<cm->nodesArraySize; i+=satNodeSize) { |
---|
| 1769 | v = i; |
---|
| 1770 | SATvalue(v) = 2; |
---|
| 1771 | SATflags(v) &= PreserveMask; |
---|
| 1772 | } |
---|
| 1773 | } |
---|
| 1774 | |
---|
| 1775 | /**Function******************************************************************** |
---|
| 1776 | |
---|
| 1777 | Synopsis [ Compact fanout of AIG node ] |
---|
| 1778 | |
---|
| 1779 | Description [ Compact fanout of AIG node ] |
---|
| 1780 | |
---|
| 1781 | SideEffects [] |
---|
| 1782 | |
---|
| 1783 | SeeAlso [] |
---|
| 1784 | |
---|
| 1785 | ******************************************************************************/ |
---|
| 1786 | void |
---|
| 1787 | sat_CompactFanout(satManager_t *cm) |
---|
| 1788 | { |
---|
| 1789 | int bufSize, bufIndex; |
---|
| 1790 | long *buf, *fan; |
---|
| 1791 | long i, v, cur; |
---|
| 1792 | int j, size, tsize; |
---|
| 1793 | |
---|
| 1794 | bufSize = 1024; |
---|
| 1795 | bufIndex = 0; |
---|
| 1796 | buf = ALLOC(long, bufSize); |
---|
| 1797 | for(i=satNodeSize; i<cm->nodesArraySize; i+=satNodeSize) { |
---|
| 1798 | v = i; |
---|
| 1799 | |
---|
| 1800 | if(!(SATflags(v) & CoiMask)) |
---|
| 1801 | continue; |
---|
| 1802 | |
---|
| 1803 | size = SATnFanout(v); |
---|
| 1804 | if(size >= bufSize) { |
---|
| 1805 | bufSize <<= 1; |
---|
| 1806 | if(size >= bufSize) |
---|
| 1807 | bufSize = size + 1; |
---|
| 1808 | buf = REALLOC(long, buf, bufSize); |
---|
| 1809 | } |
---|
| 1810 | |
---|
| 1811 | bufIndex = 0; |
---|
| 1812 | for(j=0, fan = SATfanout(v); j<size; j++) { |
---|
| 1813 | cur = fan[j]; |
---|
| 1814 | cur >>= 1; |
---|
| 1815 | cur = SATnormalNode(cur); |
---|
| 1816 | if(!(SATflags(cur) & CoiMask)) |
---|
| 1817 | continue; |
---|
| 1818 | buf[bufIndex++] = fan[j]; |
---|
| 1819 | } |
---|
| 1820 | |
---|
| 1821 | if(bufIndex > 0) { |
---|
| 1822 | tsize = bufIndex; |
---|
| 1823 | for(j=0, fan=SATfanout(v); j<size; j++) { |
---|
| 1824 | cur = fan[j]; |
---|
| 1825 | cur >>= 1; |
---|
| 1826 | cur = SATnormalNode(cur); |
---|
| 1827 | if(!(SATflags(cur) & CoiMask)) { |
---|
| 1828 | buf[bufIndex++] = fan[j]; |
---|
| 1829 | continue; |
---|
| 1830 | } |
---|
| 1831 | } |
---|
| 1832 | buf[bufIndex] = 0; |
---|
| 1833 | memcpy(fan, buf, sizeof(long)*(size+1)); |
---|
| 1834 | SATnFanout(v) = tsize; |
---|
| 1835 | } |
---|
| 1836 | else { |
---|
| 1837 | SATnFanout(v) = 0; |
---|
| 1838 | } |
---|
| 1839 | } |
---|
| 1840 | |
---|
| 1841 | free(buf); |
---|
| 1842 | |
---|
| 1843 | for(i=satNodeSize; i<cm->nodesArraySize; i+=satNodeSize) { |
---|
| 1844 | v = i; |
---|
| 1845 | if(!(SATflags(v) & CoiMask)) |
---|
| 1846 | continue; |
---|
| 1847 | fan = SATfanout(v); |
---|
| 1848 | size = SATnFanout(v); |
---|
| 1849 | qsort(fan, size, sizeof(long), NodeIndexCompare); |
---|
| 1850 | } |
---|
| 1851 | } |
---|
| 1852 | |
---|
| 1853 | |
---|
| 1854 | |
---|
| 1855 | /**Function******************************************************************** |
---|
| 1856 | |
---|
| 1857 | Synopsis [ Restore fanout of AIG node ] |
---|
| 1858 | |
---|
| 1859 | Description [ Restore fanout of AIG node ] |
---|
| 1860 | |
---|
| 1861 | SideEffects [] |
---|
| 1862 | |
---|
| 1863 | SeeAlso [] |
---|
| 1864 | |
---|
| 1865 | ******************************************************************************/ |
---|
| 1866 | void |
---|
| 1867 | sat_RestoreFanout(satManager_t *cm) |
---|
| 1868 | { |
---|
| 1869 | long i, v; |
---|
| 1870 | |
---|
| 1871 | for(i=satNodeSize; i<cm->nodesArraySize; i+=satNodeSize) { |
---|
| 1872 | v = i; |
---|
| 1873 | if((SATflags(v) & IsCNFMask)) |
---|
| 1874 | continue; |
---|
| 1875 | SATnFanout(v) = sat_GetFanoutSize(cm, v); |
---|
| 1876 | } |
---|
| 1877 | } |
---|
| 1878 | |
---|
| 1879 | /**Function******************************************************************** |
---|
| 1880 | |
---|
| 1881 | Synopsis [ Get fanout size of AIG node ] |
---|
| 1882 | |
---|
| 1883 | Description [ Get fanout size of AIG node ] |
---|
| 1884 | |
---|
| 1885 | SideEffects [] |
---|
| 1886 | |
---|
| 1887 | SeeAlso [] |
---|
| 1888 | |
---|
| 1889 | ******************************************************************************/ |
---|
| 1890 | int |
---|
| 1891 | sat_GetFanoutSize( |
---|
| 1892 | satManager_t *cm, |
---|
| 1893 | long v) |
---|
| 1894 | { |
---|
| 1895 | long *fan; |
---|
| 1896 | int i; |
---|
| 1897 | |
---|
| 1898 | fan = SATfanout(v); |
---|
| 1899 | if(fan == 0) return(0); |
---|
| 1900 | |
---|
| 1901 | for(i=0; fan[i]!=0; i++); |
---|
| 1902 | return(i); |
---|
| 1903 | } |
---|
| 1904 | |
---|
| 1905 | /**Function******************************************************************** |
---|
| 1906 | |
---|
| 1907 | Synopsis [ Mark transitive fanin of given array of node ] |
---|
| 1908 | |
---|
| 1909 | Description [ Mark transitive fanin of given array of node ] |
---|
| 1910 | |
---|
| 1911 | SideEffects [] |
---|
| 1912 | |
---|
| 1913 | SeeAlso [] |
---|
| 1914 | |
---|
| 1915 | ******************************************************************************/ |
---|
| 1916 | void |
---|
| 1917 | sat_MarkTransitiveFaninForArray( |
---|
| 1918 | satManager_t *cm, |
---|
| 1919 | satArray_t *arr, |
---|
| 1920 | unsigned int mask) |
---|
| 1921 | { |
---|
| 1922 | long v; |
---|
| 1923 | int i, size; |
---|
| 1924 | |
---|
| 1925 | if(arr == 0) return; |
---|
| 1926 | size = arr->num; |
---|
| 1927 | |
---|
| 1928 | for(i=0; i<size; i++) { |
---|
| 1929 | v = arr->space[i]; |
---|
| 1930 | sat_MarkTransitiveFaninForNode(cm, v, mask); |
---|
| 1931 | } |
---|
| 1932 | } |
---|
| 1933 | |
---|
| 1934 | /**Function******************************************************************** |
---|
| 1935 | |
---|
| 1936 | Synopsis [ Mark transitive fanin of given node ] |
---|
| 1937 | |
---|
| 1938 | Description [ Mark transitive fanin of given node ] |
---|
| 1939 | |
---|
| 1940 | SideEffects [] |
---|
| 1941 | |
---|
| 1942 | SeeAlso [] |
---|
| 1943 | |
---|
| 1944 | ******************************************************************************/ |
---|
| 1945 | void |
---|
| 1946 | sat_MarkTransitiveFaninForNode( |
---|
| 1947 | satManager_t *cm, |
---|
| 1948 | long v, |
---|
| 1949 | unsigned int mask) |
---|
| 1950 | { |
---|
| 1951 | if(v == 2) return; |
---|
| 1952 | |
---|
| 1953 | v = SATnormalNode(v); |
---|
| 1954 | |
---|
| 1955 | if(SATflags(v) & mask) return; |
---|
| 1956 | |
---|
| 1957 | SATflags(v) |= mask; |
---|
| 1958 | |
---|
| 1959 | sat_MarkTransitiveFaninForNode(cm, SATleftChild(v), mask); |
---|
| 1960 | sat_MarkTransitiveFaninForNode(cm, SATrightChild(v), mask); |
---|
| 1961 | } |
---|
| 1962 | |
---|
| 1963 | /**Function******************************************************************** |
---|
| 1964 | |
---|
| 1965 | Synopsis [ Unmark transitive fanin of given array of node ] |
---|
| 1966 | |
---|
| 1967 | Description [ Unmark transitive fanin of given array of node ] |
---|
| 1968 | |
---|
| 1969 | SideEffects [] |
---|
| 1970 | |
---|
| 1971 | SeeAlso [] |
---|
| 1972 | |
---|
| 1973 | ******************************************************************************/ |
---|
| 1974 | void |
---|
| 1975 | sat_UnmarkTransitiveFaninForArray( |
---|
| 1976 | satManager_t *cm, |
---|
| 1977 | satArray_t *arr, |
---|
| 1978 | unsigned int mask, |
---|
| 1979 | unsigned int resetMask) |
---|
| 1980 | { |
---|
| 1981 | long v; |
---|
| 1982 | int i, size; |
---|
| 1983 | |
---|
| 1984 | size = arr->num; |
---|
| 1985 | |
---|
| 1986 | for(i=0; i<size; i++) { |
---|
| 1987 | v = arr->space[i]; |
---|
| 1988 | sat_UnmarkTransitiveFaninForNode(cm, v, mask, resetMask); |
---|
| 1989 | } |
---|
| 1990 | } |
---|
| 1991 | |
---|
| 1992 | /**Function******************************************************************** |
---|
| 1993 | |
---|
| 1994 | Synopsis [ Unmark transitive fanin of given node ] |
---|
| 1995 | |
---|
| 1996 | Description [ Unmark transitive fanin of given node ] |
---|
| 1997 | |
---|
| 1998 | SideEffects [] |
---|
| 1999 | |
---|
| 2000 | SeeAlso [] |
---|
| 2001 | |
---|
| 2002 | ******************************************************************************/ |
---|
| 2003 | void |
---|
| 2004 | sat_UnmarkTransitiveFaninForNode( |
---|
| 2005 | satManager_t *cm, |
---|
| 2006 | long v, |
---|
| 2007 | unsigned int mask, |
---|
| 2008 | unsigned int resetMask) |
---|
| 2009 | { |
---|
| 2010 | if(v == 2) return; |
---|
| 2011 | |
---|
| 2012 | v = SATnormalNode(v); |
---|
| 2013 | |
---|
| 2014 | if(!(SATflags(v) & mask)) return; |
---|
| 2015 | |
---|
| 2016 | SATflags(v) &= resetMask; |
---|
| 2017 | sat_UnmarkTransitiveFaninForNode(cm, SATleftChild(v), mask, resetMask); |
---|
| 2018 | sat_UnmarkTransitiveFaninForNode(cm, SATrightChild(v), mask, resetMask); |
---|
| 2019 | } |
---|
| 2020 | |
---|
| 2021 | |
---|
| 2022 | /**Function******************************************************************** |
---|
| 2023 | |
---|
| 2024 | Synopsis [ Set COIMask ] |
---|
| 2025 | |
---|
| 2026 | Description [ Set COIMask. The COIMask of flags of node has be set to |
---|
| 2027 | apply implication on it ] |
---|
| 2028 | |
---|
| 2029 | SideEffects [] |
---|
| 2030 | |
---|
| 2031 | SeeAlso [] |
---|
| 2032 | |
---|
| 2033 | ******************************************************************************/ |
---|
| 2034 | void |
---|
| 2035 | sat_SetConeOfInfluence(satManager_t *cm) |
---|
| 2036 | { |
---|
| 2037 | sat_MarkTransitiveFaninForArray(cm, cm->assertion, CoiMask); |
---|
| 2038 | sat_MarkTransitiveFaninForArray(cm, cm->auxObj, CoiMask); |
---|
| 2039 | sat_MarkTransitiveFaninForArray(cm, cm->obj, CoiMask); |
---|
| 2040 | //Bing: |
---|
| 2041 | sat_MarkTransitiveFaninForArray(cm, cm->assertArray, CoiMask); |
---|
| 2042 | } |
---|
| 2043 | |
---|
| 2044 | |
---|
| 2045 | /**Function******************************************************************** |
---|
| 2046 | |
---|
| 2047 | Synopsis [ Allocate manager for SAT solving] |
---|
| 2048 | |
---|
| 2049 | Description [ Allocate manager for SAT solving] |
---|
| 2050 | |
---|
| 2051 | SideEffects [] |
---|
| 2052 | |
---|
| 2053 | SeeAlso [] |
---|
| 2054 | |
---|
| 2055 | ******************************************************************************/ |
---|
| 2056 | satManager_t * |
---|
| 2057 | sat_InitManager(satInterface_t *interface) |
---|
| 2058 | { |
---|
| 2059 | satManager_t *cm; |
---|
| 2060 | |
---|
| 2061 | cm = ALLOC(satManager_t, 1); |
---|
| 2062 | memset(cm, 0, sizeof(satManager_t)); |
---|
| 2063 | |
---|
| 2064 | if(interface) { |
---|
| 2065 | cm->total = interface->total; |
---|
| 2066 | cm->nonobjUnitLitArray = interface->nonobjUnitLitArray; |
---|
| 2067 | cm->savedConflictClauses = interface->savedConflictClauses; |
---|
| 2068 | cm->trieArray = interface->trieArray; |
---|
| 2069 | cm->objUnitLitArray = sat_ArrayAlloc(8); |
---|
| 2070 | } |
---|
| 2071 | else { |
---|
| 2072 | cm->total = sat_InitStatistics(); |
---|
| 2073 | cm->objUnitLitArray = sat_ArrayAlloc(8); |
---|
| 2074 | cm->nonobjUnitLitArray = sat_ArrayAlloc(8); |
---|
| 2075 | } |
---|
| 2076 | |
---|
| 2077 | return(cm); |
---|
| 2078 | } |
---|
| 2079 | |
---|
| 2080 | /**Function******************************************************************** |
---|
| 2081 | |
---|
| 2082 | Synopsis [ Free manager after SAT solving] |
---|
| 2083 | |
---|
| 2084 | Description [ Free manager after SAT solving] |
---|
| 2085 | |
---|
| 2086 | SideEffects [] |
---|
| 2087 | |
---|
| 2088 | SeeAlso [] |
---|
| 2089 | |
---|
| 2090 | ******************************************************************************/ |
---|
| 2091 | void |
---|
| 2092 | sat_FreeManager(satManager_t *cm) |
---|
| 2093 | { |
---|
| 2094 | satVariable_t *var; |
---|
| 2095 | satLevel_t *d; |
---|
| 2096 | int i; |
---|
| 2097 | |
---|
| 2098 | if(cm->option) sat_FreeOption(cm->option); |
---|
| 2099 | if(cm->total) sat_FreeStatistics(cm->total); |
---|
| 2100 | if(cm->each) sat_FreeStatistics(cm->each); |
---|
| 2101 | |
---|
| 2102 | if(cm->literals) sat_FreeLiteralsDB(cm->literals); |
---|
| 2103 | |
---|
| 2104 | if(cm->decisionHead) { |
---|
| 2105 | for(i=0; i<cm->decisionHeadSize; i++) { |
---|
| 2106 | d = &(cm->decisionHead[i]); |
---|
| 2107 | if(d->implied) |
---|
| 2108 | sat_ArrayFree(d->implied); |
---|
| 2109 | if(d->satisfied) |
---|
| 2110 | sat_ArrayFree(d->satisfied); |
---|
| 2111 | } |
---|
| 2112 | free(cm->decisionHead); |
---|
| 2113 | cm->decisionHead = 0; |
---|
| 2114 | cm->decisionHeadSize = 0; |
---|
| 2115 | } |
---|
| 2116 | |
---|
| 2117 | if(cm->queue) sat_FreeQueue(cm->queue); |
---|
| 2118 | if(cm->BDDQueue) sat_FreeQueue(cm->BDDQueue); |
---|
| 2119 | if(cm->unusedAigQueue)sat_FreeQueue(cm->unusedAigQueue); |
---|
| 2120 | cm->queue = 0; |
---|
| 2121 | cm->BDDQueue = 0; |
---|
| 2122 | cm->unusedAigQueue = 0; |
---|
| 2123 | |
---|
| 2124 | if(cm->auxObj) sat_ArrayFree(cm->auxObj); |
---|
| 2125 | if(cm->obj) sat_ArrayFree(cm->obj); |
---|
| 2126 | if(cm->unitLits) sat_ArrayFree(cm->unitLits); |
---|
| 2127 | if(cm->pureLits) sat_ArrayFree(cm->pureLits); |
---|
| 2128 | if(cm->assertion) sat_ArrayFree(cm->assertion); |
---|
| 2129 | if(cm->auxArray) sat_ArrayFree(cm->auxArray); |
---|
| 2130 | if(cm->nonobjUnitLitArray) sat_ArrayFree(cm->nonobjUnitLitArray); |
---|
| 2131 | if(cm->objUnitLitArray) sat_ArrayFree(cm->objUnitLitArray); |
---|
| 2132 | if(cm->orderedVariableArray) sat_ArrayFree(cm->orderedVariableArray); |
---|
| 2133 | if(cm->clauseIndexInCore) sat_ArrayFree(cm->clauseIndexInCore); |
---|
| 2134 | cm->auxObj = 0; |
---|
| 2135 | cm->obj = 0; |
---|
| 2136 | cm->unitLits = 0; |
---|
| 2137 | cm->pureLits = 0; |
---|
| 2138 | cm->assertion = 0; |
---|
| 2139 | cm->auxArray = 0; |
---|
| 2140 | cm->nonobjUnitLitArray = 0; |
---|
| 2141 | cm->objUnitLitArray = 0; |
---|
| 2142 | cm->orderedVariableArray = 0; |
---|
| 2143 | |
---|
| 2144 | if(cm->variableArray) { |
---|
| 2145 | for(i=0; i<=cm->initNumVariables; i++) { |
---|
| 2146 | var = &(cm->variableArray[i]); |
---|
| 2147 | if(var->wl[0]) { |
---|
| 2148 | sat_ArrayFree(var->wl[0]); |
---|
| 2149 | var->wl[0] = 0; |
---|
| 2150 | } |
---|
| 2151 | if(var->wl[1]) { |
---|
| 2152 | sat_ArrayFree(var->wl[1]); |
---|
| 2153 | var->wl[1] = 0; |
---|
| 2154 | } |
---|
| 2155 | } |
---|
| 2156 | free(cm->variableArray); |
---|
| 2157 | cm->variableArray = 0; |
---|
| 2158 | } |
---|
| 2159 | |
---|
| 2160 | |
---|
| 2161 | if(cm->comment) free(cm->comment); |
---|
| 2162 | |
---|
| 2163 | if(cm->nodesArray) free(cm->nodesArray); |
---|
| 2164 | free(cm); |
---|
| 2165 | } |
---|
| 2166 | |
---|
| 2167 | /**Function******************************************************************** |
---|
| 2168 | |
---|
| 2169 | Synopsis [ Free option after SAT solving] |
---|
| 2170 | |
---|
| 2171 | Description [ Free option after SAT solving] |
---|
| 2172 | |
---|
| 2173 | SideEffects [] |
---|
| 2174 | |
---|
| 2175 | SeeAlso [] |
---|
| 2176 | |
---|
| 2177 | ******************************************************************************/ |
---|
| 2178 | void |
---|
| 2179 | sat_FreeOption(satOption_t * option) |
---|
| 2180 | { |
---|
| 2181 | if(option) |
---|
| 2182 | free(option); |
---|
| 2183 | } |
---|
| 2184 | |
---|
| 2185 | /**Function******************************************************************** |
---|
| 2186 | |
---|
| 2187 | Synopsis [ Free statistic after SAT solving] |
---|
| 2188 | |
---|
| 2189 | Description [ Free statistic after SAT solving] |
---|
| 2190 | |
---|
| 2191 | SideEffects [] |
---|
| 2192 | |
---|
| 2193 | SeeAlso [] |
---|
| 2194 | |
---|
| 2195 | ******************************************************************************/ |
---|
| 2196 | void |
---|
| 2197 | sat_FreeStatistics(satStatistics_t * stats) |
---|
| 2198 | { |
---|
| 2199 | if(stats) |
---|
| 2200 | free(stats); |
---|
| 2201 | } |
---|
| 2202 | |
---|
| 2203 | |
---|
| 2204 | /**Function******************************************************************** |
---|
| 2205 | |
---|
| 2206 | Synopsis [ Allocate option] |
---|
| 2207 | |
---|
| 2208 | Description [ Allocate option ] |
---|
| 2209 | |
---|
| 2210 | SideEffects [] |
---|
| 2211 | |
---|
| 2212 | SeeAlso [] |
---|
| 2213 | |
---|
| 2214 | ******************************************************************************/ |
---|
| 2215 | satOption_t * |
---|
| 2216 | sat_InitOption() |
---|
| 2217 | { |
---|
| 2218 | satOption_t *option; |
---|
| 2219 | |
---|
| 2220 | option = ALLOC(satOption_t, 1); |
---|
| 2221 | memset(option, 0, sizeof(satOption_t)); |
---|
| 2222 | |
---|
| 2223 | option->decisionHeuristic |= LATEST_CONFLICT_DECISION; |
---|
| 2224 | /** |
---|
| 2225 | option->decisionHeuristic |= DVH_DECISION; |
---|
| 2226 | **/ |
---|
| 2227 | option->decisionAgeInterval = 0xff; |
---|
| 2228 | option->decisionAgeRestart = 1; |
---|
| 2229 | option->minConflictForDecision = 50; |
---|
| 2230 | option->maxConflictForDecision = 10000; |
---|
| 2231 | option->skipSatisfiedClauseForDecision = 0; |
---|
| 2232 | |
---|
| 2233 | |
---|
| 2234 | /** |
---|
| 2235 | option->clauseDeletionHeuristic |= MAX_UNRELEVANCE_DELETION; |
---|
| 2236 | option->clauseDeletionHeuristic |= SIMPLE_LATEST_DELETION; |
---|
| 2237 | **/ |
---|
| 2238 | option->clauseDeletionHeuristic |= LATEST_ACTIVITY_DELETION; |
---|
| 2239 | option->clauseDeletionInterval = 2500; |
---|
| 2240 | option->nextClauseDeletion = option->clauseDeletionInterval*5; |
---|
| 2241 | option->unrelevance = 20; |
---|
| 2242 | option->minLitsLimit = 20; |
---|
| 2243 | option->maxLitsLimit = 1000; |
---|
| 2244 | |
---|
| 2245 | option->latestUnrelevance = 45; |
---|
| 2246 | option->obsoleteUnrelevance = 20;//6 |
---|
| 2247 | option->latestUsage = 100; |
---|
| 2248 | option->obsoleteUsage = 2; |
---|
| 2249 | option->latestRate = 16; |
---|
| 2250 | |
---|
| 2251 | option->incNumObjLitsLimit = 20; /** 50 **/ |
---|
| 2252 | option->incNumNonobjLitsLimit = 50; |
---|
| 2253 | |
---|
| 2254 | option->incPreserveNonobjective = 1; |
---|
| 2255 | option->minimizeConflictClause = 1; |
---|
| 2256 | |
---|
| 2257 | |
---|
| 2258 | option->BDDMonolithic = 0; |
---|
| 2259 | option->BDDDPLL = 0; |
---|
| 2260 | option->maxLimitOfVariablesForMonolithicBDD = 2000; |
---|
| 2261 | option->maxLimitOfClausesForMonolithicBDD = 20000; |
---|
| 2262 | option->maxLimitOfCutSizeForMonolithicBDD = 2000; |
---|
| 2263 | |
---|
| 2264 | option->maxLimitOfVariablesForBDDDPLL = 200; |
---|
| 2265 | option->maxLimitOfClausesForBDDDPLL = 2000; |
---|
| 2266 | option->maxLimitOfCutSizeForBDDDPLL = 500; |
---|
| 2267 | |
---|
| 2268 | option->maxLimitOfVariablesForBDD = 50; |
---|
| 2269 | |
---|
| 2270 | option->memoryLimit = 1024 * 1024 * 1024; |
---|
| 2271 | |
---|
| 2272 | return(option); |
---|
| 2273 | } |
---|
| 2274 | |
---|
| 2275 | /**Function******************************************************************** |
---|
| 2276 | |
---|
| 2277 | Synopsis [ Report statistics] |
---|
| 2278 | |
---|
| 2279 | Description [ Report statistics] |
---|
| 2280 | |
---|
| 2281 | SideEffects [] |
---|
| 2282 | |
---|
| 2283 | SeeAlso [] |
---|
| 2284 | |
---|
| 2285 | ******************************************************************************/ |
---|
| 2286 | void |
---|
| 2287 | sat_ReportStatistics( |
---|
| 2288 | satManager_t *cm, |
---|
| 2289 | satStatistics_t *stats) |
---|
| 2290 | { |
---|
| 2291 | satOption_t *option; |
---|
| 2292 | |
---|
| 2293 | option = cm->option; |
---|
| 2294 | fprintf(cm->stdOut, "%s Number of decisions %d\n", |
---|
| 2295 | cm->comment, stats->nDecisions); |
---|
| 2296 | if(option->decisionHeuristic & DVH_DECISION) { |
---|
| 2297 | fprintf(cm->stdOut, "%s Number of DVH decisions %d\n", |
---|
| 2298 | cm->comment, stats->nDVHDecisions); |
---|
| 2299 | } |
---|
| 2300 | if(option->decisionHeuristic & LATEST_CONFLICT_DECISION) { |
---|
| 2301 | fprintf(cm->stdOut, "%s Number of latest conflict decisions %d\n", |
---|
| 2302 | cm->comment, stats->nLatestConflictDecisions); |
---|
| 2303 | } |
---|
| 2304 | fprintf(cm->stdOut, "%s Number of backtracks %d\n", |
---|
| 2305 | cm->comment, stats->nBacktracks); |
---|
| 2306 | |
---|
| 2307 | fprintf(cm->stdOut, "%s Number of CNF implications %d\n", |
---|
| 2308 | cm->comment, stats->nCNFImplications); |
---|
| 2309 | fprintf(cm->stdOut, "%s Number of Aig implications %d\n", |
---|
| 2310 | cm->comment, stats->nAigImplications); |
---|
| 2311 | fprintf(cm->stdOut, "%s Number of BDD implications %d\n", |
---|
| 2312 | cm->comment, stats->nBDDImplications); |
---|
| 2313 | |
---|
| 2314 | fprintf(cm->stdOut, "%s Number of unit conflict clauses %d\n", |
---|
| 2315 | cm->comment, stats->nUnitConflictCl); |
---|
| 2316 | fprintf(cm->stdOut, "%s Number of conflict clauses %d\n", |
---|
| 2317 | cm->comment, stats->nConflictCl); |
---|
| 2318 | fprintf(cm->stdOut, "%s Number of conflict literals %d\n", |
---|
| 2319 | cm->comment, stats->nConflictLit); |
---|
| 2320 | fprintf(cm->stdOut, "%s Number of deleted clauses %d\n", |
---|
| 2321 | cm->comment, stats->nDeletedCl); |
---|
| 2322 | fprintf(cm->stdOut, "%s Number of deleted literals %d\n", |
---|
| 2323 | cm->comment, stats->nDeletedLit); |
---|
| 2324 | |
---|
| 2325 | if(option->incTraceObjective + option->incDistill) { |
---|
| 2326 | fprintf(cm->stdOut, "%s Number of init object conflict clauses %d\n", |
---|
| 2327 | cm->comment, stats->nInitObjConflictCl); |
---|
| 2328 | fprintf(cm->stdOut, "%s Number of init object conflict literals %d\n", |
---|
| 2329 | cm->comment, stats->nInitObjConflictLit); |
---|
| 2330 | fprintf(cm->stdOut, "%s Number of init non-object conflict clauses %d\n", |
---|
| 2331 | cm->comment, stats->nInitNonobjConflictCl); |
---|
| 2332 | fprintf(cm->stdOut, "%s Number of init non-object conflict literals %d\n", |
---|
| 2333 | cm->comment, stats->nInitNonobjConflictLit); |
---|
| 2334 | fprintf(cm->stdOut, "%s Number of object conflict clauses %d\n", |
---|
| 2335 | cm->comment, stats->nObjConflictCl); |
---|
| 2336 | fprintf(cm->stdOut, "%s Number of object conflict literals %d\n", |
---|
| 2337 | cm->comment, stats->nObjConflictLit); |
---|
| 2338 | fprintf(cm->stdOut, "%s Number of non-object conflict clauses %d\n", |
---|
| 2339 | cm->comment, stats->nNonobjConflictCl); |
---|
| 2340 | fprintf(cm->stdOut, "%s Number of non-object conflict literals %d\n", |
---|
| 2341 | cm->comment, stats->nNonobjConflictLit); |
---|
| 2342 | } |
---|
| 2343 | if(option->incDistill) { |
---|
| 2344 | fprintf(cm->stdOut, "%s Number of distill object conflict clauses %d\n", |
---|
| 2345 | cm->comment, stats->nDistillObjConflictCl); |
---|
| 2346 | fprintf(cm->stdOut, "%s Number of distill object conflict literals %d\n", |
---|
| 2347 | cm->comment, stats->nDistillObjConflictLit); |
---|
| 2348 | fprintf(cm->stdOut, "%s Number of distill non-object conflict clauses %d\n", |
---|
| 2349 | cm->comment, stats->nDistillNonobjConflictCl); |
---|
| 2350 | fprintf(cm->stdOut, "%s Number of distill non-object conflict literals %d\n", |
---|
| 2351 | cm->comment, stats->nDistillNonobjConflictLit); |
---|
| 2352 | } |
---|
| 2353 | if(option->allSatMode) { |
---|
| 2354 | fprintf(cm->stdOut, "%s Number of blocking clauses %d\n", |
---|
| 2355 | cm->comment, stats->nBlockingCl); |
---|
| 2356 | fprintf(cm->stdOut, "%s Number of blocking literals %d\n", |
---|
| 2357 | cm->comment, stats->nBlockingLit); |
---|
| 2358 | } |
---|
| 2359 | |
---|
| 2360 | fprintf(cm->stdOut, "%s Maximum decision level %d\n", |
---|
| 2361 | cm->comment, stats->maxDecisionLevel); |
---|
| 2362 | fprintf(cm->stdOut, "%s Number of low score decisions %d\n", |
---|
| 2363 | cm->comment, stats->nLowScoreDecisions); |
---|
| 2364 | fprintf(cm->stdOut, "%s Total nonchronological backtracks %d\n", |
---|
| 2365 | cm->comment, stats->nNonchonologicalBacktracks); |
---|
| 2366 | fprintf(cm->stdOut, "%s Total run time %10g\n", cm->comment, stats->satTime); |
---|
| 2367 | fflush(cm->stdOut); |
---|
| 2368 | |
---|
| 2369 | } |
---|
| 2370 | |
---|
| 2371 | /**Function******************************************************************** |
---|
| 2372 | |
---|
| 2373 | Synopsis [ Allocate statistics] |
---|
| 2374 | |
---|
| 2375 | Description [ Allocate statistics] |
---|
| 2376 | |
---|
| 2377 | SideEffects [] |
---|
| 2378 | |
---|
| 2379 | SeeAlso [] |
---|
| 2380 | |
---|
| 2381 | ******************************************************************************/ |
---|
| 2382 | satStatistics_t * |
---|
| 2383 | sat_InitStatistics(void) |
---|
| 2384 | { |
---|
| 2385 | satStatistics_t *stats; |
---|
| 2386 | |
---|
| 2387 | stats = ALLOC(satStatistics_t, 1); |
---|
| 2388 | memset(stats, 0, sizeof(satStatistics_t)); |
---|
| 2389 | |
---|
| 2390 | return(stats); |
---|
| 2391 | } |
---|
| 2392 | |
---|
| 2393 | |
---|
| 2394 | /**Function******************************************************************** |
---|
| 2395 | |
---|
| 2396 | Synopsis [ Set incremental option ] |
---|
| 2397 | |
---|
| 2398 | Description [ Set incremental option ] |
---|
| 2399 | |
---|
| 2400 | SideEffects [] |
---|
| 2401 | |
---|
| 2402 | SeeAlso [] |
---|
| 2403 | |
---|
| 2404 | ******************************************************************************/ |
---|
| 2405 | void |
---|
| 2406 | sat_SetIncrementalOption(satOption_t *option, int incFlag) |
---|
| 2407 | { |
---|
| 2408 | if(incFlag == 0) return; |
---|
| 2409 | |
---|
| 2410 | if(incFlag == 1) { /* TraceObjective */ |
---|
| 2411 | option->incTraceObjective = 1; |
---|
| 2412 | } |
---|
| 2413 | else if(incFlag == 2) { /* Distill */ |
---|
| 2414 | option->incDistill = 1; |
---|
| 2415 | } |
---|
| 2416 | else if(incFlag == 3) { /* TraceObjective & Distill */ |
---|
| 2417 | option->incTraceObjective = 1; |
---|
| 2418 | option->incDistill = 1; |
---|
| 2419 | } |
---|
| 2420 | |
---|
| 2421 | } |
---|
| 2422 | |
---|
| 2423 | /**Function******************************************************************** |
---|
| 2424 | |
---|
| 2425 | Synopsis [ Restore blocking clauses] |
---|
| 2426 | |
---|
| 2427 | Description [ Restore blocking clauses] |
---|
| 2428 | |
---|
| 2429 | SideEffects [] |
---|
| 2430 | |
---|
| 2431 | SeeAlso [] |
---|
| 2432 | |
---|
| 2433 | ******************************************************************************/ |
---|
| 2434 | void |
---|
| 2435 | sat_RestoreBlockingClauses(satManager_t *cm) |
---|
| 2436 | { |
---|
| 2437 | long *space, *start; |
---|
| 2438 | long c, v; |
---|
| 2439 | int i; |
---|
| 2440 | satArray_t *reached; |
---|
| 2441 | satArray_t *clause; |
---|
| 2442 | satArray_t *unitLits; |
---|
| 2443 | |
---|
| 2444 | reached = cm->reached; |
---|
| 2445 | if(reached == 0) |
---|
| 2446 | return; |
---|
| 2447 | |
---|
| 2448 | unitLits = cm->unitLits; |
---|
| 2449 | if(unitLits == 0) |
---|
| 2450 | unitLits = cm->unitLits = sat_ArrayAlloc(16); |
---|
| 2451 | |
---|
| 2452 | clause = sat_ArrayAlloc(50); |
---|
| 2453 | |
---|
| 2454 | for(i=0, space=reached->space; i<reached->num; i++, space++){ |
---|
| 2455 | if(*space <= 0) { |
---|
| 2456 | space++; |
---|
| 2457 | i++; |
---|
| 2458 | if(i>=reached->num) |
---|
| 2459 | break; |
---|
| 2460 | start = space; |
---|
| 2461 | clause->num = 0; |
---|
| 2462 | while(*space > 0) { |
---|
| 2463 | v = (*space); |
---|
| 2464 | sat_ArrayInsert(clause, SATnot(v)); |
---|
| 2465 | i++; |
---|
| 2466 | space++; |
---|
| 2467 | } |
---|
| 2468 | |
---|
| 2469 | c = sat_AddBlockingClause(cm, clause); |
---|
| 2470 | |
---|
| 2471 | /** |
---|
| 2472 | fprintf(stdout, "NOTICE : forwarded blocking clause\n"); |
---|
| 2473 | sat_PrintNode(cm, c); |
---|
| 2474 | **/ |
---|
| 2475 | |
---|
| 2476 | if(clause->num == 1) |
---|
| 2477 | sat_ArrayInsert(unitLits, (v)); |
---|
| 2478 | i--; |
---|
| 2479 | space--; |
---|
| 2480 | } |
---|
| 2481 | } |
---|
| 2482 | sat_ArrayFree(clause); |
---|
| 2483 | } |
---|
| 2484 | |
---|
| 2485 | /**Function******************************************************************** |
---|
| 2486 | |
---|
| 2487 | Synopsis [ Restore Frontier clauses] |
---|
| 2488 | |
---|
| 2489 | Description [ Restore Frontier clauses] |
---|
| 2490 | |
---|
| 2491 | SideEffects [] |
---|
| 2492 | |
---|
| 2493 | SeeAlso [] |
---|
| 2494 | |
---|
| 2495 | ******************************************************************************/ |
---|
| 2496 | void |
---|
| 2497 | sat_RestoreFrontierClauses(satManager_t *cm) |
---|
| 2498 | { |
---|
| 2499 | long *space, *start; |
---|
| 2500 | long c, v; |
---|
| 2501 | int i; |
---|
| 2502 | satArray_t *frontier; |
---|
| 2503 | satArray_t *clause; |
---|
| 2504 | satArray_t *unitLits; |
---|
| 2505 | |
---|
| 2506 | frontier = cm->frontier; |
---|
| 2507 | cm->frontierNodesEnd = cm->nodesArraySize; |
---|
| 2508 | if(frontier == 0) |
---|
| 2509 | return; |
---|
| 2510 | |
---|
| 2511 | unitLits = cm->unitLits; |
---|
| 2512 | if(unitLits == 0) |
---|
| 2513 | unitLits = cm->unitLits = sat_ArrayAlloc(16); |
---|
| 2514 | |
---|
| 2515 | clause = sat_ArrayAlloc(50); |
---|
| 2516 | |
---|
| 2517 | for(i=0, space=frontier->space; i<frontier->num; i++, space++){ |
---|
| 2518 | if(*space <= 0) { |
---|
| 2519 | space++; |
---|
| 2520 | i++; |
---|
| 2521 | if(i>=frontier->num) |
---|
| 2522 | break; |
---|
| 2523 | start = space; |
---|
| 2524 | clause->num = 0; |
---|
| 2525 | while(*space > 0) { |
---|
| 2526 | v = (*space); |
---|
| 2527 | sat_ArrayInsert(clause, SATnot(v)); |
---|
| 2528 | i++; |
---|
| 2529 | space++; |
---|
| 2530 | } |
---|
| 2531 | |
---|
| 2532 | c = sat_AddClause(cm, clause); |
---|
| 2533 | |
---|
| 2534 | /** |
---|
| 2535 | sat_PrintNode(cm, c); |
---|
| 2536 | **/ |
---|
| 2537 | |
---|
| 2538 | cm->initNumClauses++; |
---|
| 2539 | cm->initNumLiterals += clause->num; |
---|
| 2540 | if(clause->num == 1) |
---|
| 2541 | sat_ArrayInsert(unitLits, (v)); |
---|
| 2542 | |
---|
| 2543 | i--; |
---|
| 2544 | space--; |
---|
| 2545 | } |
---|
| 2546 | } |
---|
| 2547 | sat_ArrayFree(clause); |
---|
| 2548 | cm->frontierNodesEnd = cm->nodesArraySize; |
---|
| 2549 | } |
---|
| 2550 | |
---|
| 2551 | /**Function******************************************************************** |
---|
| 2552 | |
---|
| 2553 | Synopsis [ Restore clauses] |
---|
| 2554 | |
---|
| 2555 | Description [ Restore clauses] |
---|
| 2556 | |
---|
| 2557 | SideEffects [] |
---|
| 2558 | |
---|
| 2559 | SeeAlso [] |
---|
| 2560 | |
---|
| 2561 | ******************************************************************************/ |
---|
| 2562 | void |
---|
| 2563 | sat_RestoreClauses(satManager_t *cm, satArray_t *cnfArray) |
---|
| 2564 | { |
---|
| 2565 | long *space, *start; |
---|
| 2566 | long c, v; |
---|
| 2567 | int i; |
---|
| 2568 | satArray_t *clause; |
---|
| 2569 | satArray_t *unitLits; |
---|
| 2570 | |
---|
| 2571 | |
---|
| 2572 | unitLits = cm->unitLits; |
---|
| 2573 | if(unitLits == 0) |
---|
| 2574 | unitLits = cm->unitLits = sat_ArrayAlloc(16); |
---|
| 2575 | |
---|
| 2576 | clause = sat_ArrayAlloc(50); |
---|
| 2577 | |
---|
| 2578 | for(i=0, space=cnfArray->space; i<cnfArray->num; i++, space++){ |
---|
| 2579 | if(*space <= 0) { |
---|
| 2580 | space++; |
---|
| 2581 | i++; |
---|
| 2582 | if(i>=cnfArray->num) |
---|
| 2583 | break; |
---|
| 2584 | start = space; |
---|
| 2585 | clause->num = 0; |
---|
| 2586 | while(*space > 0) { |
---|
| 2587 | v = (*space); |
---|
| 2588 | sat_ArrayInsert(clause, SATnot(v)); |
---|
| 2589 | i++; |
---|
| 2590 | space++; |
---|
| 2591 | } |
---|
| 2592 | |
---|
| 2593 | if(clause->num == 1) { |
---|
| 2594 | sat_ArrayInsert(unitLits, (v)); |
---|
| 2595 | } |
---|
| 2596 | else { |
---|
| 2597 | c = sat_AddClause(cm, clause); |
---|
| 2598 | } |
---|
| 2599 | |
---|
| 2600 | cm->initNumClauses++; |
---|
| 2601 | cm->initNumLiterals += clause->num; |
---|
| 2602 | |
---|
| 2603 | i--; |
---|
| 2604 | space--; |
---|
| 2605 | } |
---|
| 2606 | } |
---|
| 2607 | sat_ArrayFree(clause); |
---|
| 2608 | } |
---|
| 2609 | |
---|
| 2610 | /**Function******************************************************************** |
---|
| 2611 | |
---|
| 2612 | Synopsis [ Collect blocking clauses] |
---|
| 2613 | |
---|
| 2614 | Description [ Collect blocking clauses] |
---|
| 2615 | |
---|
| 2616 | SideEffects [] |
---|
| 2617 | |
---|
| 2618 | SeeAlso [] |
---|
| 2619 | |
---|
| 2620 | ******************************************************************************/ |
---|
| 2621 | void |
---|
| 2622 | sat_CollectBlockingClause(satManager_t *cm) |
---|
| 2623 | { |
---|
| 2624 | satArray_t *reached, *frontier; |
---|
| 2625 | long i, v, tv, *plit; |
---|
| 2626 | int j, size; |
---|
| 2627 | int inverted, num; |
---|
| 2628 | int nReachs, nFrontiers; |
---|
| 2629 | |
---|
| 2630 | if(cm->reached == 0) cm->reached = sat_ArrayAlloc(1024); |
---|
| 2631 | if(cm->frontier == 0) cm->frontier = sat_ArrayAlloc(1024); |
---|
| 2632 | |
---|
| 2633 | frontier = cm->frontier; |
---|
| 2634 | reached = cm->reached; |
---|
| 2635 | |
---|
| 2636 | frontier->num = 0; |
---|
| 2637 | reached->num = 0; |
---|
| 2638 | sat_ArrayInsert(frontier, 0); |
---|
| 2639 | sat_ArrayInsert(reached, 0); |
---|
| 2640 | nReachs = nFrontiers = 0; |
---|
| 2641 | |
---|
| 2642 | for(i=cm->beginConflict; i<cm->nodesArraySize; i+=satNodeSize) { |
---|
| 2643 | if(!(SATflags(i) & IsBlockingMask)) |
---|
| 2644 | continue; |
---|
| 2645 | |
---|
| 2646 | if(SATreadInUse(i) == 0) continue; |
---|
| 2647 | |
---|
| 2648 | if((SATflags(i) & IsFrontierMask)) { |
---|
| 2649 | |
---|
| 2650 | /** |
---|
| 2651 | fprintf(stdout, "Frontier processed\n"); |
---|
| 2652 | sat_PrintNode(cm, i); |
---|
| 2653 | **/ |
---|
| 2654 | plit = (long*)SATfirstLit(i); |
---|
| 2655 | size = SATnumLits(i); |
---|
| 2656 | num = frontier->num; |
---|
| 2657 | for(j=0; j<size; j++, plit++) { |
---|
| 2658 | v = SATgetNode(*plit); |
---|
| 2659 | inverted = SATisInverted(v); |
---|
| 2660 | tv = SATnormalNode(v); |
---|
| 2661 | sat_ArrayInsert(frontier, v); |
---|
| 2662 | } |
---|
| 2663 | nFrontiers++; |
---|
| 2664 | sat_ArrayInsert(frontier, 0); |
---|
| 2665 | } |
---|
| 2666 | |
---|
| 2667 | plit = (long*)SATfirstLit(i); |
---|
| 2668 | size = SATnumLits(i); |
---|
| 2669 | for(j=0; j<size; j++, plit++) { |
---|
| 2670 | v = SATgetNode(*plit); |
---|
| 2671 | sat_ArrayInsert(reached, v); |
---|
| 2672 | } |
---|
| 2673 | sat_ArrayInsert(reached, 0); |
---|
| 2674 | nReachs ++; |
---|
| 2675 | } |
---|
| 2676 | |
---|
| 2677 | |
---|
| 2678 | |
---|
| 2679 | cm->frontier = frontier; |
---|
| 2680 | cm->reached = reached; |
---|
| 2681 | fprintf(stdout, "NOTICE : %d frontier are collected\n", nFrontiers); |
---|
| 2682 | fprintf(stdout, "NOTICE : %d blocking clauses are collected\n", nReachs); |
---|
| 2683 | } |
---|
| 2684 | |
---|
| 2685 | |
---|
| 2686 | /**Function******************************************************************** |
---|
| 2687 | |
---|
| 2688 | Synopsis [ Free interface] |
---|
| 2689 | |
---|
| 2690 | Description [ Free interface] |
---|
| 2691 | |
---|
| 2692 | SideEffects [] |
---|
| 2693 | |
---|
| 2694 | SeeAlso [] |
---|
| 2695 | |
---|
| 2696 | ******************************************************************************/ |
---|
| 2697 | void |
---|
| 2698 | sat_FreeInterface(satInterface_t *interface) |
---|
| 2699 | { |
---|
| 2700 | if(interface == 0) return; |
---|
| 2701 | |
---|
| 2702 | if(interface->total) |
---|
| 2703 | free(interface->total); |
---|
| 2704 | if(interface->nonobjUnitLitArray) |
---|
| 2705 | sat_ArrayFree(interface->nonobjUnitLitArray); |
---|
| 2706 | if(interface->objUnitLitArray) |
---|
| 2707 | sat_ArrayFree(interface->objUnitLitArray); |
---|
| 2708 | if(interface->savedConflictClauses) |
---|
| 2709 | free(interface->savedConflictClauses); |
---|
| 2710 | free(interface); |
---|
| 2711 | } |
---|
| 2712 | |
---|
| 2713 | /**Function******************************************************************** |
---|
| 2714 | |
---|
| 2715 | Synopsis [ Create AIG node ] |
---|
| 2716 | |
---|
| 2717 | Description [ Create AIG node, |
---|
| 2718 | This function is identical with bAig_CreateNode, |
---|
| 2719 | We have this function here to isolate this package from baig] |
---|
| 2720 | |
---|
| 2721 | SideEffects [] |
---|
| 2722 | |
---|
| 2723 | SeeAlso [] |
---|
| 2724 | |
---|
| 2725 | ******************************************************************************/ |
---|
| 2726 | long |
---|
| 2727 | sat_CreateNode( |
---|
| 2728 | satManager_t *cm, |
---|
| 2729 | long left, |
---|
| 2730 | long right) |
---|
| 2731 | { |
---|
| 2732 | long newNode; |
---|
| 2733 | |
---|
| 2734 | newNode = cm->nodesArraySize; |
---|
| 2735 | //Bing: to deal with the case that cm->maxNodesArraySize is not multiple of |
---|
| 2736 | // satNodeSize |
---|
| 2737 | cm->nodesArraySize += satNodeSize; |
---|
| 2738 | |
---|
| 2739 | if(cm->nodesArraySize >= cm->maxNodesArraySize) { |
---|
| 2740 | cm->maxNodesArraySize = 2* cm->maxNodesArraySize; |
---|
| 2741 | cm->nodesArray = REALLOC(long, cm->nodesArray, cm->maxNodesArraySize); |
---|
| 2742 | } |
---|
| 2743 | cm->nodesArray[newNode + satRight] = right; |
---|
| 2744 | cm->nodesArray[newNode + satLeft] = left; |
---|
| 2745 | |
---|
| 2746 | //cm->nodesArraySize += satNodeSize; |
---|
| 2747 | |
---|
| 2748 | SATflags(newNode) = 0; |
---|
| 2749 | SATnext(newNode) = 2; |
---|
| 2750 | SATnFanout(newNode) = 0; |
---|
| 2751 | /** |
---|
| 2752 | SATfanout(newNode) = 0; |
---|
| 2753 | **/ |
---|
| 2754 | (cm->nodesArray[newNode+satFanout]) = 0; |
---|
| 2755 | //Bing: |
---|
| 2756 | SATvalue(newNode) = 2; |
---|
| 2757 | |
---|
| 2758 | return(newNode); |
---|
| 2759 | } |
---|
| 2760 | |
---|
| 2761 | /**Function******************************************************************** |
---|
| 2762 | |
---|
| 2763 | Synopsis [ Usage of memory ] |
---|
| 2764 | |
---|
| 2765 | Description [ Usage of memory ] |
---|
| 2766 | |
---|
| 2767 | SideEffects [] |
---|
| 2768 | |
---|
| 2769 | SeeAlso [] |
---|
| 2770 | |
---|
| 2771 | ******************************************************************************/ |
---|
| 2772 | int |
---|
| 2773 | sat_MemUsage(satManager_t *cm) |
---|
| 2774 | { |
---|
| 2775 | satLiteralDB_t *literals; |
---|
| 2776 | satStatistics_t *stats; |
---|
| 2777 | int aigSize, cnfSize, watchedSize; |
---|
| 2778 | |
---|
| 2779 | literals = cm->literals; |
---|
| 2780 | stats = cm->each; |
---|
| 2781 | aigSize = sizeof(int) * cm->maxNodesArraySize; |
---|
| 2782 | cnfSize = sizeof(int) * (literals->end - literals->begin); |
---|
| 2783 | watchedSize = sizeof(int) * 2 * |
---|
| 2784 | (stats->nConflictCl - stats->nDeletedCl); |
---|
| 2785 | return(aigSize + cnfSize + watchedSize); |
---|
| 2786 | } |
---|
| 2787 | |
---|
| 2788 | |
---|
| 2789 | |
---|
| 2790 | /**Function******************************************************************** |
---|
| 2791 | |
---|
| 2792 | Synopsis [ Get canonical node ] |
---|
| 2793 | |
---|
| 2794 | Description [ Get canonical node ] |
---|
| 2795 | |
---|
| 2796 | SideEffects [] |
---|
| 2797 | |
---|
| 2798 | SeeAlso [] |
---|
| 2799 | |
---|
| 2800 | ******************************************************************************/ |
---|
| 2801 | long |
---|
| 2802 | sat_GetCanonical(satManager_t *cm, long v) |
---|
| 2803 | { |
---|
| 2804 | long nv; |
---|
| 2805 | int inverted; |
---|
| 2806 | |
---|
| 2807 | if(v == 2) return(2); |
---|
| 2808 | |
---|
| 2809 | while(!(SATflags(SATnormalNode(v))) & CanonicalBitMask) { |
---|
| 2810 | inverted = SATisInverted(v); |
---|
| 2811 | v = SATnormalNode(v); |
---|
| 2812 | nv = SATcanonical(v); |
---|
| 2813 | if(inverted) |
---|
| 2814 | nv = SATnot(nv); |
---|
| 2815 | v = nv; |
---|
| 2816 | } |
---|
| 2817 | return(v); |
---|
| 2818 | } |
---|
| 2819 | |
---|
| 2820 | |
---|
| 2821 | /**Function******************************************************************** |
---|
| 2822 | |
---|
| 2823 | Synopsis [ Combine statistics of several runs] |
---|
| 2824 | |
---|
| 2825 | Description [ Combine statistics of several runs] |
---|
| 2826 | |
---|
| 2827 | SideEffects [] |
---|
| 2828 | |
---|
| 2829 | SeeAlso [] |
---|
| 2830 | |
---|
| 2831 | ******************************************************************************/ |
---|
| 2832 | void |
---|
| 2833 | sat_CombineStatistics(satManager_t *cm) |
---|
| 2834 | { |
---|
| 2835 | /* CONSIDER ... */ |
---|
| 2836 | } |
---|
| 2837 | |
---|
| 2838 | /**Function******************************************************************** |
---|
| 2839 | |
---|
| 2840 | Synopsis [ Get the number of initial clauses ] |
---|
| 2841 | |
---|
| 2842 | Description [ Get the number of initial clauses. |
---|
| 2843 | This function works properly only CNF sat case] |
---|
| 2844 | |
---|
| 2845 | SideEffects [] |
---|
| 2846 | |
---|
| 2847 | SeeAlso [] |
---|
| 2848 | |
---|
| 2849 | ******************************************************************************/ |
---|
| 2850 | int |
---|
| 2851 | sat_GetNumberOfInitialClauses(satManager_t *cm) |
---|
| 2852 | { |
---|
| 2853 | return(cm->initNumClauses); |
---|
| 2854 | } |
---|
| 2855 | |
---|
| 2856 | /**Function******************************************************************** |
---|
| 2857 | |
---|
| 2858 | Synopsis [ Get the number of initial variables ] |
---|
| 2859 | |
---|
| 2860 | Description [ Get the number of initial variables. |
---|
| 2861 | This function works properly only CNF sat case] |
---|
| 2862 | |
---|
| 2863 | SideEffects [] |
---|
| 2864 | |
---|
| 2865 | SeeAlso [] |
---|
| 2866 | |
---|
| 2867 | ******************************************************************************/ |
---|
| 2868 | int |
---|
| 2869 | sat_GetNumberOfInitialVariables(satManager_t *cm) |
---|
| 2870 | { |
---|
| 2871 | return(cm->initNumVariables); |
---|
| 2872 | } |
---|
| 2873 | |
---|
| 2874 | /**Function******************************************************************** |
---|
| 2875 | |
---|
| 2876 | Synopsis [ Read forced assignments.] |
---|
| 2877 | |
---|
| 2878 | Description [ Read forced assignments.] |
---|
| 2879 | |
---|
| 2880 | SideEffects [] |
---|
| 2881 | |
---|
| 2882 | SeeAlso [] |
---|
| 2883 | |
---|
| 2884 | ******************************************************************************/ |
---|
| 2885 | satArray_t * |
---|
| 2886 | sat_ReadForcedAssignment( |
---|
| 2887 | char *filename) |
---|
| 2888 | { |
---|
| 2889 | FILE *fin; |
---|
| 2890 | char line[102400], word[1024]; |
---|
| 2891 | char *lp; |
---|
| 2892 | satArray_t *arr; |
---|
| 2893 | long v; |
---|
| 2894 | |
---|
| 2895 | if(!(fin = fopen(filename, "r"))) { |
---|
| 2896 | fprintf(stdout, "ERROR : Can't open file %s\n", filename); |
---|
| 2897 | return(0); |
---|
| 2898 | } |
---|
| 2899 | |
---|
| 2900 | arr = sat_ArrayAlloc(64); |
---|
| 2901 | while(fgets(line, 102400, fin)) { |
---|
| 2902 | lp = sat_RemoveSpace(line); |
---|
| 2903 | if(lp[0] == '\n') continue; |
---|
| 2904 | while(1) { |
---|
| 2905 | lp = sat_RemoveSpace(lp); |
---|
| 2906 | lp = sat_CopyWord(lp, word); |
---|
| 2907 | if(strlen(word)) { |
---|
| 2908 | v = atoi(word); |
---|
| 2909 | v *= satNodeSize; |
---|
| 2910 | if(v < 0) v = SATnot(-v); |
---|
| 2911 | sat_ArrayInsert(arr, v); |
---|
| 2912 | } |
---|
| 2913 | else { |
---|
| 2914 | break; |
---|
| 2915 | } |
---|
| 2916 | } |
---|
| 2917 | } |
---|
| 2918 | fclose(fin); |
---|
| 2919 | |
---|
| 2920 | return(arr); |
---|
| 2921 | } |
---|
| 2922 | |
---|
| 2923 | /**Function******************************************************************** |
---|
| 2924 | |
---|
| 2925 | Synopsis [ Apply forced assignments.] |
---|
| 2926 | |
---|
| 2927 | Description [ Apply forced assignments.] |
---|
| 2928 | |
---|
| 2929 | SideEffects [] |
---|
| 2930 | |
---|
| 2931 | SeeAlso [] |
---|
| 2932 | |
---|
| 2933 | ******************************************************************************/ |
---|
| 2934 | int |
---|
| 2935 | sat_ApplyForcedAssigment( |
---|
| 2936 | satManager_t *cm, |
---|
| 2937 | satArray_t *arr, |
---|
| 2938 | satLevel_t *d) |
---|
| 2939 | { |
---|
| 2940 | long v; |
---|
| 2941 | int i, inverted, errorFlag; |
---|
| 2942 | |
---|
| 2943 | errorFlag = 0; |
---|
| 2944 | for(i=0; i<arr->num; i++) { |
---|
| 2945 | v = arr->space[i]; |
---|
| 2946 | inverted = SATisInverted(v); |
---|
| 2947 | v = SATnormalNode(v); |
---|
| 2948 | |
---|
| 2949 | SATvalue(v) = !inverted; |
---|
| 2950 | SATmakeImplied(v, d); |
---|
| 2951 | sat_Enqueue(cm->queue, v); |
---|
| 2952 | SATflags(v) |= InQueueMask; |
---|
| 2953 | sat_ImplicationMain(cm, d); |
---|
| 2954 | if(d->conflict) { |
---|
| 2955 | fprintf(cm->stdOut, |
---|
| 2956 | "%s WARNING : conflict happens at level %d while applying forced assignments\n", cm->comment, d->level); |
---|
| 2957 | errorFlag = 1; |
---|
| 2958 | break; |
---|
| 2959 | } |
---|
| 2960 | } |
---|
| 2961 | if(errorFlag) |
---|
| 2962 | return(SAT_UNSAT); |
---|
| 2963 | else |
---|
| 2964 | return(0); |
---|
| 2965 | } |
---|
| 2966 | |
---|
| 2967 | /**Function******************************************************************** |
---|
| 2968 | |
---|
| 2969 | Synopsis [ Apply forced assignments.] |
---|
| 2970 | |
---|
| 2971 | Description [ Apply forced assignments.] |
---|
| 2972 | |
---|
| 2973 | SideEffects [] |
---|
| 2974 | |
---|
| 2975 | SeeAlso [] |
---|
| 2976 | |
---|
| 2977 | ******************************************************************************/ |
---|
| 2978 | void |
---|
| 2979 | sat_ApplyForcedAssignmentMain( |
---|
| 2980 | satManager_t *cm, |
---|
| 2981 | satLevel_t *d) |
---|
| 2982 | { |
---|
| 2983 | satArray_t *forcedArr; |
---|
| 2984 | int flag; |
---|
| 2985 | |
---|
| 2986 | forcedArr = cm->option->forcedAssignArr; |
---|
| 2987 | flag = 0; |
---|
| 2988 | if(forcedArr) { |
---|
| 2989 | flag = sat_ApplyForcedAssigment(cm, forcedArr, d); |
---|
| 2990 | } |
---|
| 2991 | |
---|
| 2992 | if(flag == SAT_UNSAT) { |
---|
| 2993 | cm->status = SAT_UNSAT; |
---|
| 2994 | return; |
---|
| 2995 | } |
---|
| 2996 | } |
---|
| 2997 | |
---|
| 2998 | /**Function******************************************************************** |
---|
| 2999 | |
---|
| 3000 | Synopsis [ Put assignments.] |
---|
| 3001 | |
---|
| 3002 | Description [ Put assignments.] |
---|
| 3003 | |
---|
| 3004 | SideEffects [] |
---|
| 3005 | |
---|
| 3006 | SeeAlso [] |
---|
| 3007 | |
---|
| 3008 | ******************************************************************************/ |
---|
| 3009 | void |
---|
| 3010 | sat_PutAssignmentValueMain( |
---|
| 3011 | satManager_t *cm, |
---|
| 3012 | satLevel_t *d, |
---|
| 3013 | satArray_t *arr) |
---|
| 3014 | { |
---|
| 3015 | long v; |
---|
| 3016 | int i; |
---|
| 3017 | int inverted; |
---|
| 3018 | |
---|
| 3019 | if(arr == 0) return; |
---|
| 3020 | |
---|
| 3021 | if(cm->variableArray == 0) { |
---|
| 3022 | cm->variableArray = ALLOC(satVariable_t, cm->initNumVariables+1); |
---|
| 3023 | memset(cm->variableArray, 0, |
---|
| 3024 | sizeof(satVariable_t) * (cm->initNumVariables+1)); |
---|
| 3025 | } |
---|
| 3026 | |
---|
| 3027 | for(i=0; i<arr->num; i++) { |
---|
| 3028 | v = arr->space[i]; |
---|
| 3029 | inverted = SATisInverted(v); |
---|
| 3030 | v = SATnormalNode(v); |
---|
| 3031 | |
---|
| 3032 | SATvalue(v) = !inverted; |
---|
| 3033 | } |
---|
| 3034 | } |
---|
| 3035 | |
---|
| 3036 | /**Function******************************************************************** |
---|
| 3037 | |
---|
| 3038 | Synopsis [ Clause deletion heuristic based on usage of conflict clause ] |
---|
| 3039 | |
---|
| 3040 | Description [ Clause deletion heuristic based on usage of conflict clause ] |
---|
| 3041 | |
---|
| 3042 | SideEffects [] |
---|
| 3043 | |
---|
| 3044 | SeeAlso [] |
---|
| 3045 | |
---|
| 3046 | ******************************************************************************/ |
---|
| 3047 | void |
---|
| 3048 | sat_ClauseDeletionLatestActivity(satManager_t *cm) |
---|
| 3049 | { |
---|
| 3050 | satLiteralDB_t *literals; |
---|
| 3051 | satOption_t *option; |
---|
| 3052 | long nv, v, *plit, *clit; |
---|
| 3053 | long usage, totalConflictCl; |
---|
| 3054 | long index, lit; |
---|
| 3055 | |
---|
| 3056 | int size, n0, n1x, deleteFlag; |
---|
| 3057 | int unrelevance; |
---|
| 3058 | int usedLimit; |
---|
| 3059 | int inverted, i; |
---|
| 3060 | int value; |
---|
| 3061 | int nLatestCl; |
---|
| 3062 | int nDeletedCl; |
---|
| 3063 | double ratio; |
---|
| 3064 | |
---|
| 3065 | /** |
---|
| 3066 | LATEST_ACTIVITY_DELETION |
---|
| 3067 | MAX_UNRELEVANCE_DELETION |
---|
| 3068 | SIMPLE_LATEST_DELETION |
---|
| 3069 | **/ |
---|
| 3070 | |
---|
| 3071 | option = cm->option; |
---|
| 3072 | if(option->clauseDeletionHeuristic == 0) return; |
---|
| 3073 | |
---|
| 3074 | totalConflictCl = (cm->nodesArraySize - cm->beginConflict)/satNodeSize; |
---|
| 3075 | nDeletedCl = cm->each->nDeletedCl; |
---|
| 3076 | nLatestCl = totalConflictCl/option->latestRate; |
---|
| 3077 | literals = cm->literals; |
---|
| 3078 | index = 0; |
---|
| 3079 | for(clit = literals->last-1; clit > literals->begin; clit--){ |
---|
| 3080 | if(*clit == 0) |
---|
| 3081 | continue; |
---|
| 3082 | if(index >= totalConflictCl) |
---|
| 3083 | break; |
---|
| 3084 | v = -(*clit); |
---|
| 3085 | |
---|
| 3086 | plit = (long*)SATfirstLit(v); |
---|
| 3087 | clit = plit - 1; |
---|
| 3088 | index++; |
---|
| 3089 | |
---|
| 3090 | if(nLatestCl > 0) { |
---|
| 3091 | nLatestCl--; |
---|
| 3092 | unrelevance = option->latestUnrelevance; |
---|
| 3093 | } |
---|
| 3094 | else { |
---|
| 3095 | unrelevance = option->obsoleteUnrelevance; |
---|
| 3096 | } |
---|
| 3097 | |
---|
| 3098 | if(!(SATflags(v) & IsConflictMask)) continue; |
---|
| 3099 | if((SATflags(v) & IsFrontierMask)) continue; |
---|
| 3100 | |
---|
| 3101 | if(option->incPreserveNonobjective && (SATflags(v) & NonobjMask)) |
---|
| 3102 | continue; |
---|
| 3103 | |
---|
| 3104 | usage = SATconflictUsage(v); |
---|
| 3105 | SATconflictUsage(v) = usage/2; |
---|
| 3106 | size = SATnumLits(v); |
---|
| 3107 | // if(size < option->minLitsLimit) continue; |
---|
| 3108 | if(size < unrelevance) |
---|
| 3109 | continue; |
---|
| 3110 | |
---|
| 3111 | usedLimit = option->obsoleteUsage + |
---|
| 3112 | (option->latestUsage-option->obsoleteUsage)*index/totalConflictCl; |
---|
| 3113 | if(usage > usedLimit) |
---|
| 3114 | continue; |
---|
| 3115 | |
---|
| 3116 | |
---|
| 3117 | n0 = n1x = 0; |
---|
| 3118 | deleteFlag = 0; |
---|
| 3119 | for(i=0; i<size; i++, plit++) { |
---|
| 3120 | lit = *plit; |
---|
| 3121 | nv = SATgetNode(lit); |
---|
| 3122 | inverted = SATisInverted(nv); |
---|
| 3123 | nv = SATnormalNode(nv); |
---|
| 3124 | value = SATvalue(nv) ^ inverted; |
---|
| 3125 | |
---|
| 3126 | if(value == 0) n0++; |
---|
| 3127 | else if(value == 1) { |
---|
| 3128 | n1x++; |
---|
| 3129 | if(SATlevel(nv) == 0) deleteFlag = 1; |
---|
| 3130 | } |
---|
| 3131 | else n1x++; |
---|
| 3132 | |
---|
| 3133 | if(deleteFlag) { |
---|
| 3134 | sat_DeleteClause(cm, v); |
---|
| 3135 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 3136 | break; |
---|
| 3137 | } |
---|
| 3138 | if((size > option->maxLitsLimit) && (n1x > 1)) { |
---|
| 3139 | sat_DeleteClause(cm, v); |
---|
| 3140 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 3141 | break; |
---|
| 3142 | } |
---|
| 3143 | if(n1x > unrelevance) { |
---|
| 3144 | sat_DeleteClause(cm, v); |
---|
| 3145 | sat_Enqueue(cm->unusedAigQueue, v); |
---|
| 3146 | break; |
---|
| 3147 | } |
---|
| 3148 | } |
---|
| 3149 | |
---|
| 3150 | } |
---|
| 3151 | |
---|
| 3152 | cm->each->nDeletedButUncompacted += cm->each->nDeletedCl - nDeletedCl; |
---|
| 3153 | ratio = (double)cm->each->nDeletedButUncompacted/ |
---|
| 3154 | (double)(cm->each->nConflictCl-cm->each->nDeletedCl); |
---|
| 3155 | |
---|
| 3156 | if(ratio> 0.2) { |
---|
| 3157 | sat_CompactClauses(cm); |
---|
| 3158 | cm->each->nDeletedButUncompacted = 0; |
---|
| 3159 | } |
---|
| 3160 | |
---|
| 3161 | } |
---|
| 3162 | |
---|
| 3163 | |
---|
| 3164 | /**Function******************************************************************** |
---|
| 3165 | |
---|
| 3166 | Synopsis [ Find a clause index from literal pointer.] |
---|
| 3167 | |
---|
| 3168 | Description [ Find a clause index from literal pointer.] |
---|
| 3169 | |
---|
| 3170 | SideEffects [] |
---|
| 3171 | |
---|
| 3172 | SeeAlso [] |
---|
| 3173 | |
---|
| 3174 | ******************************************************************************/ |
---|
| 3175 | long |
---|
| 3176 | sat_GetClauseFromLit( |
---|
| 3177 | satManager_t *cm, |
---|
| 3178 | long *lit) |
---|
| 3179 | { |
---|
| 3180 | while(*lit > 0) { |
---|
| 3181 | lit++; |
---|
| 3182 | } |
---|
| 3183 | return(-(*lit)); |
---|
| 3184 | } |
---|
| 3185 | /**Function******************************************************************** |
---|
| 3186 | |
---|
| 3187 | Synopsis [ Compare node index to sort ] |
---|
| 3188 | |
---|
| 3189 | Description [ Compare node index to sort ] |
---|
| 3190 | |
---|
| 3191 | SideEffects [] |
---|
| 3192 | |
---|
| 3193 | SeeAlso [] |
---|
| 3194 | |
---|
| 3195 | ******************************************************************************/ |
---|
| 3196 | static int |
---|
| 3197 | NodeIndexCompare(const void *x, const void *y) |
---|
| 3198 | { |
---|
| 3199 | long n1, n2; |
---|
| 3200 | |
---|
| 3201 | n1 = *(long *)x; |
---|
| 3202 | n2 = *(long *)y; |
---|
| 3203 | return(n1 > n2); |
---|
| 3204 | } |
---|