[14] | 1 | /**CFile*********************************************************************** |
---|
| 2 | |
---|
| 3 | FileName [grabBMC.c] |
---|
| 4 | |
---|
| 5 | PackageName [grab] |
---|
| 6 | |
---|
| 7 | Synopsis [Check abstract paths on a more concrete model using SAT.] |
---|
| 8 | |
---|
| 9 | Description [Abstract paths are given in an array of MDDs, which |
---|
| 10 | capture multiple abstract paths at the same time. MDDs are encoded |
---|
| 11 | as AIG graph to allow the check in the more concrete model.] |
---|
| 12 | |
---|
| 13 | Author [Chao Wang] |
---|
| 14 | |
---|
| 15 | Copyright [Copyright (c) 2004 The Regents of the Univ. of Colorado. |
---|
| 16 | All rights reserved. |
---|
| 17 | |
---|
| 18 | Permission is hereby granted, without written agreement and without |
---|
| 19 | license or royalty fees, to use, copy, modify, and distribute this |
---|
| 20 | software and its documentation for any purpose, provided that the |
---|
| 21 | above copyright notice and the following two paragraphs appear in |
---|
| 22 | all copies of this software.] |
---|
| 23 | |
---|
| 24 | ******************************************************************************/ |
---|
| 25 | |
---|
| 26 | #include "grabInt.h" |
---|
| 27 | #include "bmcInt.h" |
---|
| 28 | |
---|
| 29 | /*---------------------------------------------------------------------------*/ |
---|
| 30 | /* Constant declarations */ |
---|
| 31 | /*---------------------------------------------------------------------------*/ |
---|
| 32 | |
---|
| 33 | /*---------------------------------------------------------------------------*/ |
---|
| 34 | /* Structure declarations */ |
---|
| 35 | /*---------------------------------------------------------------------------*/ |
---|
| 36 | |
---|
| 37 | /*---------------------------------------------------------------------------*/ |
---|
| 38 | /* Type declarations */ |
---|
| 39 | /*---------------------------------------------------------------------------*/ |
---|
| 40 | |
---|
| 41 | /*---------------------------------------------------------------------------*/ |
---|
| 42 | /* Variable declarations */ |
---|
| 43 | /*---------------------------------------------------------------------------*/ |
---|
| 44 | |
---|
| 45 | /*---------------------------------------------------------------------------*/ |
---|
| 46 | /* Macro declarations */ |
---|
| 47 | /*---------------------------------------------------------------------------*/ |
---|
| 48 | |
---|
| 49 | /**AutomaticStart*************************************************************/ |
---|
| 50 | |
---|
| 51 | /*---------------------------------------------------------------------------*/ |
---|
| 52 | /* Static function prototypes */ |
---|
| 53 | /*---------------------------------------------------------------------------*/ |
---|
| 54 | |
---|
| 55 | static bAigEdge_t GrabConvertBddToBaig(bAig_Manager_t *bAigManager, bdd_t *fn, st_table *bddidToNames); |
---|
| 56 | static st_table * GrabBddGetSupportBaigNames(mdd_manager *mddManager, mdd_t *f); |
---|
| 57 | static char * GrabBddIdToBaigNames(mdd_manager *mddManager, int bddid); |
---|
| 58 | |
---|
| 59 | /**AutomaticEnd***************************************************************/ |
---|
| 60 | |
---|
| 61 | /*---------------------------------------------------------------------------*/ |
---|
| 62 | /* Definition of exported functions */ |
---|
| 63 | /*---------------------------------------------------------------------------*/ |
---|
| 64 | |
---|
| 65 | /**Function******************************************************************** |
---|
| 66 | |
---|
| 67 | Synopsis [Check if the abstract paths exist in the model.] |
---|
| 68 | |
---|
| 69 | Description [Check if the abstract paths exist in the model. The |
---|
| 70 | paths are given as set of onion rings, where each ring is a set of |
---|
| 71 | states. The model is defined by the set of latches in absLatches.] |
---|
| 72 | |
---|
| 73 | SideEffects [] |
---|
| 74 | |
---|
| 75 | ******************************************************************************/ |
---|
| 76 | boolean |
---|
| 77 | Bmc_AbstractCheckAbstractTraces( |
---|
| 78 | Ntk_Network_t *network, |
---|
| 79 | array_t *synOnionRings, |
---|
| 80 | st_table *absLatches, |
---|
| 81 | int verbose, |
---|
| 82 | int dbgLevel, |
---|
| 83 | int printInputs) |
---|
| 84 | { |
---|
| 85 | int pathLength = array_n(synOnionRings) -1; |
---|
| 86 | mAig_Manager_t *maigManager = Ntk_NetworkReadMAigManager(network); |
---|
| 87 | st_table *nodeToMvfAigTable = NIL(st_table); |
---|
| 88 | BmcCnfClauses_t *cnfClauses; |
---|
| 89 | FILE *cnfFile; |
---|
| 90 | BmcOption_t *options; |
---|
| 91 | array_t *result; |
---|
| 92 | int i; |
---|
| 93 | boolean CexExit = FALSE; |
---|
| 94 | |
---|
| 95 | nodeToMvfAigTable = |
---|
| 96 | (st_table *) Ntk_NetworkReadApplInfo(network, MVFAIG_NETWORK_APPL_KEY); |
---|
| 97 | if (nodeToMvfAigTable == NIL(st_table)){ |
---|
| 98 | fprintf(vis_stderr, |
---|
| 99 | "** bmc error: please run buid_partiton_maigs first\n"); |
---|
| 100 | return CexExit; |
---|
| 101 | } |
---|
| 102 | |
---|
| 103 | options = BmcOptionAlloc(); |
---|
| 104 | if (verbose) { |
---|
| 105 | options->dbgLevel = dbgLevel; |
---|
| 106 | options->printInputs = printInputs; |
---|
| 107 | } |
---|
| 108 | options->satInFile = BmcCreateTmpFile(); |
---|
| 109 | if (options->satInFile == NIL(char)){ |
---|
| 110 | BmcOptionFree(options); |
---|
| 111 | return CexExit; |
---|
| 112 | } |
---|
| 113 | |
---|
| 114 | /* create SAT Solver output file */ |
---|
| 115 | options->satOutFile = BmcCreateTmpFile(); |
---|
| 116 | if (options->satOutFile == NIL(char)){ |
---|
| 117 | BmcOptionFree(options); |
---|
| 118 | fprintf(vis_stderr, "** bmc error: Cannot allocate a temp file name\n"); |
---|
| 119 | return CexExit; |
---|
| 120 | } |
---|
| 121 | cnfFile = Cmd_FileOpen(options->satInFile, "w", NIL(char *), 0); |
---|
| 122 | if (cnfFile == NIL(FILE)) { |
---|
| 123 | BmcOptionFree(options); |
---|
| 124 | fprintf(vis_stderr, "** bmc error: Cannot create CNF output file %s\n", |
---|
| 125 | options->satInFile); |
---|
| 126 | return CexExit; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | /* Unroll the model exactly 'pathLength' time frames |
---|
| 130 | */ |
---|
| 131 | cnfClauses = BmcCnfClausesAlloc(); |
---|
| 132 | BmcCnfGenerateClausesForPath(network, 0, pathLength, BMC_INITIAL_STATES, |
---|
| 133 | cnfClauses, nodeToMvfAigTable, absLatches); |
---|
| 134 | |
---|
| 135 | /* Generate the constraints from the abstract paths |
---|
| 136 | * (1) build a bAigEdge_t (graph) for each ring |
---|
| 137 | * (2) add all the cnf clauses that describe this graph |
---|
| 138 | * (3) make the output bAigEdge_t equals to 1 |
---|
| 139 | */ |
---|
| 140 | { |
---|
| 141 | bAigEdge_t bAigState; |
---|
| 142 | mdd_manager *mddManager = Ntk_NetworkReadMddManager(network); |
---|
| 143 | array_t *clause = array_alloc(int, 1); |
---|
| 144 | mdd_t *ring; |
---|
| 145 | |
---|
| 146 | arrayForEachItem(mdd_t *, synOnionRings, i, ring) { |
---|
| 147 | st_table *bddidTobAigNames; |
---|
| 148 | bddidTobAigNames = GrabBddGetSupportBaigNames(mddManager, ring); |
---|
| 149 | bAigState = GrabConvertBddToBaig(maigManager, ring, bddidTobAigNames); |
---|
| 150 | { |
---|
| 151 | st_generator *stgen; |
---|
| 152 | long tmpId; |
---|
| 153 | char *tmpStr; |
---|
| 154 | st_foreach_item(bddidTobAigNames, stgen, &tmpId, &tmpStr) { |
---|
| 155 | FREE(tmpStr); |
---|
| 156 | } |
---|
| 157 | st_free_table(bddidTobAigNames); |
---|
| 158 | } |
---|
| 159 | array_insert(int, clause, 0, BmcGenerateCnfFormulaForAigFunction( |
---|
| 160 | maigManager, bAigState, i, cnfClauses)); |
---|
| 161 | BmcCnfInsertClause(cnfClauses, clause); |
---|
| 162 | } |
---|
| 163 | |
---|
| 164 | array_free(clause); |
---|
| 165 | } |
---|
| 166 | |
---|
| 167 | /* Call the SAT solver |
---|
| 168 | */ |
---|
| 169 | BmcWriteClauses(maigManager, cnfFile, cnfClauses, options); |
---|
| 170 | fclose(cnfFile); |
---|
| 171 | result = BmcCheckSAT(options); |
---|
| 172 | if(result != NIL(array_t)){ |
---|
| 173 | if (verbose >= 1 && dbgLevel ==1) { |
---|
| 174 | fprintf(vis_stdout,"Found Counterexample of length = %d\n", pathLength); |
---|
| 175 | BmcPrintCounterExample(network, nodeToMvfAigTable, cnfClauses, |
---|
| 176 | result, pathLength+1, absLatches, options, |
---|
| 177 | NIL(array_t)); |
---|
| 178 | } |
---|
| 179 | if (verbose >=1 && dbgLevel == 2) { |
---|
| 180 | BmcPrintCounterExampleAiger(network, nodeToMvfAigTable, cnfClauses, |
---|
| 181 | result, pathLength+1, absLatches, options, |
---|
| 182 | NIL(array_t)); |
---|
| 183 | } |
---|
| 184 | CexExit = TRUE; |
---|
| 185 | } |
---|
| 186 | |
---|
| 187 | /* free all used memories */ |
---|
| 188 | BmcCnfClausesFree(cnfClauses); |
---|
| 189 | array_free(result); |
---|
| 190 | BmcOptionFree(options); |
---|
| 191 | |
---|
| 192 | return CexExit; |
---|
| 193 | } |
---|
| 194 | |
---|
| 195 | |
---|
| 196 | /**Function******************************************************************** |
---|
| 197 | |
---|
| 198 | Synopsis [Check if the abstract paths exist in the fine-grain model.] |
---|
| 199 | |
---|
| 200 | Description [Check if the abstract paths exist in the fine-grain |
---|
| 201 | model. The paths are given as set of onion rings, where each ring is |
---|
| 202 | a set of states. The model is defined by the set of latches |
---|
| 203 | (absLatches) and bnvs (absBnvs). The entire set of bnvs of the |
---|
| 204 | network are stored in the table coiBnvTable. |
---|
| 205 | |
---|
| 206 | This procedure first build a NEW maig graph (for the fine-grain |
---|
| 207 | model), then check if the abstract paths exist in the model. |
---|
| 208 | |
---|
| 209 | Before it returns, the previous maig graph is restored.] |
---|
| 210 | |
---|
| 211 | SideEffects [] |
---|
| 212 | |
---|
| 213 | ******************************************************************************/ |
---|
| 214 | boolean |
---|
| 215 | Bmc_AbstractCheckAbstractTracesWithFineGrain( |
---|
| 216 | Ntk_Network_t *network, |
---|
| 217 | st_table *coiBnvTable, |
---|
| 218 | array_t *synOnionRings, |
---|
| 219 | st_table *absLatches, |
---|
| 220 | st_table *absBnvs) |
---|
| 221 | { |
---|
| 222 | boolean result; |
---|
| 223 | mAigManagerState_t oldMaigState; /* to store the previous AIG */ |
---|
| 224 | mAig_Manager_t *maigManager; |
---|
| 225 | lsGen lsgen; |
---|
| 226 | Ntk_Node_t *node; |
---|
| 227 | int mAigId; |
---|
| 228 | int i; |
---|
| 229 | st_generator *stgen; |
---|
| 230 | st_table *leaves; |
---|
| 231 | array_t *roots, *combInputs; |
---|
| 232 | |
---|
| 233 | /* save the existing maigManager */ |
---|
| 234 | oldMaigState.manager = Ntk_NetworkReadMAigManager(network); |
---|
| 235 | oldMaigState.nodeToMvfAigTable = |
---|
| 236 | (st_table *) Ntk_NetworkReadApplInfo(network, MVFAIG_NETWORK_APPL_KEY); |
---|
| 237 | oldMaigState.nodeToMAigIdTable = st_init_table(st_ptrcmp, st_ptrhash); |
---|
| 238 | Ntk_NetworkForEachNode(network, lsgen, node) { |
---|
| 239 | mAigId = Ntk_NodeReadMAigId(node); |
---|
| 240 | st_insert(oldMaigState.nodeToMAigIdTable, node, (char *)(long)mAigId); |
---|
| 241 | Ntk_NodeSetMAigId(node, ntmaig_UNUSED); |
---|
| 242 | } |
---|
| 243 | |
---|
| 244 | /* create a new maigManager */ |
---|
| 245 | maigManager = mAig_initAig(); |
---|
| 246 | Ntk_NetworkSetMAigManager(network, maigManager); |
---|
| 247 | Ntk_NetworkSetApplInfo(network, MVFAIG_NETWORK_APPL_KEY, |
---|
| 248 | (Ntk_ApplInfoFreeFn) ntmAig_MvfAigTableFreeCallback, |
---|
| 249 | (void *) st_init_table(st_ptrcmp, st_ptrhash)); |
---|
| 250 | |
---|
| 251 | /* roots are the visible latches, and the visible bnvs (some bnvs |
---|
| 252 | * may not be in the transitive fan-in cone of the visible latches |
---|
| 253 | */ |
---|
| 254 | roots = array_alloc(Ntk_Node_t *, 0); |
---|
| 255 | st_foreach_item(absLatches, stgen, &node, NIL(char *)) { |
---|
| 256 | array_insert_last(Ntk_Node_t *, roots, Ntk_LatchReadDataInput(node)); |
---|
| 257 | array_insert_last(Ntk_Node_t *, roots, Ntk_LatchReadInitialInput(node)); |
---|
| 258 | } |
---|
| 259 | st_foreach_item(absBnvs, stgen, &node, NIL(char *)) { |
---|
| 260 | array_insert_last(Ntk_Node_t *, roots, node); |
---|
| 261 | } |
---|
| 262 | |
---|
| 263 | combInputs = Ntk_NodeComputeTransitiveFaninNodes(network, roots, |
---|
| 264 | TRUE, /* stopAtLatches */ |
---|
| 265 | FALSE /* combInputsOnly*/ |
---|
| 266 | ); |
---|
| 267 | |
---|
| 268 | /* leaves are the combinational inputs or the invisible bnvs */ |
---|
| 269 | leaves = st_init_table(st_ptrcmp, st_ptrhash); |
---|
| 270 | arrayForEachItem(Ntk_Node_t *, combInputs, i, node) { |
---|
| 271 | if ( Ntk_NodeTestIsCombInput(node) || |
---|
| 272 | ( st_is_member(coiBnvTable, node) && |
---|
| 273 | !st_is_member(absBnvs, node) ) ) { |
---|
| 274 | st_insert(leaves, node, (char *) ntmaig_UNUSED); |
---|
| 275 | Ntk_NodeSetMAigId(node, mAig_CreateVar(maigManager, |
---|
| 276 | Ntk_NodeReadName(node), |
---|
| 277 | Var_VariableReadNumValues(Ntk_NodeReadVariable(node)))); |
---|
| 278 | } |
---|
| 279 | } |
---|
| 280 | st_foreach_item(absLatches, stgen, &node, NIL(char *)) { |
---|
| 281 | if (!st_is_member(leaves, node)) { |
---|
| 282 | st_insert(leaves, node, (char *) ntmaig_UNUSED); |
---|
| 283 | Ntk_NodeSetMAigId(node, mAig_CreateVar(maigManager, |
---|
| 284 | Ntk_NodeReadName(node), |
---|
| 285 | Var_VariableReadNumValues(Ntk_NodeReadVariable(node)))); |
---|
| 286 | } |
---|
| 287 | } |
---|
| 288 | array_free(combInputs); |
---|
| 289 | |
---|
| 290 | #if 1 |
---|
| 291 | /* THIS SEEMS UNNECESSARY---IT'S HERE TO AVOID ERRORS IN CALLING |
---|
| 292 | * ntmaig_NetworkBuildMvfAigs() |
---|
| 293 | */ |
---|
| 294 | Ntk_NetworkForEachCombInput(network, lsgen, node) { |
---|
| 295 | if (Ntk_NodeReadMAigId(node) == NTK_UNASSIGNED_MAIG_ID) { |
---|
| 296 | Ntk_NodeSetMAigId(node, mAig_CreateVar(maigManager, |
---|
| 297 | Ntk_NodeReadName(node), |
---|
| 298 | Var_VariableReadNumValues(Ntk_NodeReadVariable(node)))); |
---|
| 299 | } |
---|
| 300 | } |
---|
| 301 | #endif |
---|
| 302 | |
---|
| 303 | /* build the new AIG graph */ |
---|
| 304 | ntmaig_NetworkBuildMvfAigs(network, roots, leaves); |
---|
| 305 | |
---|
| 306 | array_free(roots); |
---|
| 307 | st_free_table(leaves); |
---|
| 308 | |
---|
| 309 | |
---|
| 310 | /* check the existence of the abstract path on the new AIG graph */ |
---|
| 311 | result = Bmc_AbstractCheckAbstractTraces(network, |
---|
| 312 | synOnionRings, |
---|
| 313 | absLatches, |
---|
| 314 | 0, 0, 0); |
---|
| 315 | |
---|
| 316 | /* restore the previous maigManager */ |
---|
| 317 | mAig_quit(maigManager); |
---|
| 318 | Ntk_NetworkFreeApplInfo(network, MVFAIG_NETWORK_APPL_KEY); |
---|
| 319 | Ntk_NetworkSetMAigManager(network, oldMaigState.manager); |
---|
| 320 | Ntk_NetworkSetApplInfo(network, MVFAIG_NETWORK_APPL_KEY, |
---|
| 321 | (Ntk_ApplInfoFreeFn) ntmAig_MvfAigTableFreeCallback, |
---|
| 322 | (void *) oldMaigState.nodeToMvfAigTable); |
---|
| 323 | st_foreach_item(oldMaigState.nodeToMAigIdTable, stgen, &node, |
---|
| 324 | &mAigId) { |
---|
| 325 | Ntk_NodeSetMAigId(node, mAigId); |
---|
| 326 | } |
---|
| 327 | st_free_table(oldMaigState.nodeToMAigIdTable); |
---|
| 328 | |
---|
| 329 | return result; |
---|
| 330 | } |
---|
| 331 | |
---|
| 332 | /*---------------------------------------------------------------------------*/ |
---|
| 333 | /* Definition of static functions */ |
---|
| 334 | /*---------------------------------------------------------------------------*/ |
---|
| 335 | |
---|
| 336 | /**Function******************************************************************** |
---|
| 337 | |
---|
| 338 | Synopsis [Build the binary Aig for a given bdd] |
---|
| 339 | |
---|
| 340 | SideEffects [Build the binary Aig for a given bdd. We assume that |
---|
| 341 | the return bdd nodes from the foreach_bdd_node are in the order from |
---|
| 342 | childeren to parent. i.e all the childeren nodes are returned before |
---|
| 343 | the parent node. |
---|
| 344 | |
---|
| 345 | bddidToNames is a hash table from bddid to its bAigEdge_t name. If |
---|
| 346 | provided, this table should contain entiries for all the bddid in |
---|
| 347 | the support.] |
---|
| 348 | |
---|
| 349 | SideEffects [] |
---|
| 350 | |
---|
| 351 | SeeAlso [] |
---|
| 352 | |
---|
| 353 | ******************************************************************************/ |
---|
| 354 | static bAigEdge_t |
---|
| 355 | GrabConvertBddToBaig( |
---|
| 356 | bAig_Manager_t *bAigManager, |
---|
| 357 | bdd_t *fn, |
---|
| 358 | st_table *bddidToNames) |
---|
| 359 | { |
---|
| 360 | bdd_gen *gen; |
---|
| 361 | bdd_node *node, *thenNode, *elseNode, *funcNode; |
---|
| 362 | bdd_manager *bddManager = bdd_get_manager(fn); |
---|
| 363 | bdd_node *one = bdd_read_one(bddManager); |
---|
| 364 | /*bdd_node *zero = bdd_read_logic_zero(bddManager);*/ |
---|
| 365 | int is_complemented; |
---|
| 366 | int flag; |
---|
| 367 | bAigEdge_t var, left, right, result; |
---|
| 368 | char *name; |
---|
| 369 | st_table *bddTObaigTable; |
---|
| 370 | |
---|
| 371 | bddTObaigTable = st_init_table(st_numcmp, st_numhash); |
---|
| 372 | |
---|
| 373 | if (fn == NULL){ |
---|
| 374 | return bAig_NULL; |
---|
| 375 | } |
---|
| 376 | |
---|
| 377 | st_insert(bddTObaigTable, (char *) (long) bdd_regular(one), |
---|
| 378 | (char *) bAig_One); |
---|
| 379 | |
---|
| 380 | funcNode = bdd_get_node(fn, &is_complemented); |
---|
| 381 | |
---|
| 382 | if (bdd_is_constant(funcNode)){ |
---|
| 383 | flag = st_lookup(bddTObaigTable, |
---|
| 384 | (char *) (long) (funcNode), |
---|
| 385 | &result); |
---|
| 386 | assert(flag); |
---|
| 387 | st_free_table(bddTObaigTable); |
---|
| 388 | |
---|
| 389 | if (is_complemented) |
---|
| 390 | return bAig_Not(result); |
---|
| 391 | else |
---|
| 392 | return result; |
---|
| 393 | } |
---|
| 394 | |
---|
| 395 | foreach_bdd_node(fn, gen, node){ |
---|
| 396 | /* if the node has been processed, skip it. (the constant ONE |
---|
| 397 | * should be the only node falls into this category). |
---|
| 398 | */ |
---|
| 399 | if (st_is_member(bddTObaigTable, (char *) (long) bdd_regular(node))) |
---|
| 400 | continue; |
---|
| 401 | |
---|
| 402 | /* bdd_node_read_index() return the current level's bddId */ |
---|
| 403 | if (bddidToNames) { |
---|
| 404 | flag = st_lookup(bddidToNames, (char *)(long)bdd_node_read_index(node), |
---|
| 405 | &name); |
---|
| 406 | assert(flag); |
---|
| 407 | name = util_strsav(name); |
---|
| 408 | }else { |
---|
| 409 | char tempString[1024]; |
---|
| 410 | sprintf(tempString, "BDD%d", bdd_node_read_index(node)); |
---|
| 411 | name = util_strsav(tempString); |
---|
| 412 | } |
---|
| 413 | |
---|
| 414 | /* Create or Retrieve the bAigEdge_t w.r.t. 'name' */ |
---|
| 415 | var = bAig_CreateVarNode(bAigManager, name); |
---|
| 416 | FREE(name); |
---|
| 417 | |
---|
| 418 | thenNode = bdd_bdd_T(node); |
---|
| 419 | flag = st_lookup(bddTObaigTable, (char *) (long) bdd_regular(thenNode), |
---|
| 420 | &left); |
---|
| 421 | assert(flag); |
---|
| 422 | |
---|
| 423 | elseNode = bdd_bdd_E(node); |
---|
| 424 | flag = st_lookup(bddTObaigTable, (char *) (long) bdd_regular(elseNode), |
---|
| 425 | &right); |
---|
| 426 | assert(flag); |
---|
| 427 | |
---|
| 428 | /* should we test here whether elseNode is complemented arc? */ |
---|
| 429 | if (bdd_is_complement(elseNode)) |
---|
| 430 | right = bAig_Not(right); |
---|
| 431 | |
---|
| 432 | result = bAig_Or(bAigManager, bAig_And(bAigManager, var, left), |
---|
| 433 | bAig_And(bAigManager, bAig_Not(var), right)); |
---|
| 434 | st_insert(bddTObaigTable, (char *) (long) bdd_regular(node), |
---|
| 435 | (char *) (long) result); |
---|
| 436 | } |
---|
| 437 | flag = st_lookup(bddTObaigTable, (char *) (long) bdd_regular(funcNode), |
---|
| 438 | &result); |
---|
| 439 | assert(flag); |
---|
| 440 | st_free_table(bddTObaigTable); |
---|
| 441 | |
---|
| 442 | if (is_complemented){ |
---|
| 443 | return bAig_Not(result); |
---|
| 444 | } else { |
---|
| 445 | return result; |
---|
| 446 | } |
---|
| 447 | } /* end of bAig_bddtobAig() */ |
---|
| 448 | |
---|
| 449 | |
---|
| 450 | /**Function******************************************************************** |
---|
| 451 | |
---|
| 452 | Synopsis [Get a (bddId,baigName) table for the supporting variableS.] |
---|
| 453 | |
---|
| 454 | SideEffects [Get a (bddId,baigName) table for the supporting |
---|
| 455 | variableS. The caller should free the returned table as well as the |
---|
| 456 | (char *) of its value field.] |
---|
| 457 | |
---|
| 458 | SeeAlso [] |
---|
| 459 | |
---|
| 460 | ******************************************************************************/ |
---|
| 461 | static st_table * |
---|
| 462 | GrabBddGetSupportBaigNames( |
---|
| 463 | mdd_manager *mddManager, |
---|
| 464 | mdd_t *f) |
---|
| 465 | { |
---|
| 466 | int numOfVars = bdd_num_vars(mddManager); |
---|
| 467 | st_table *bddidTObaigNames = st_init_table(st_numcmp, st_numhash); |
---|
| 468 | var_set_t *vset; |
---|
| 469 | int i; |
---|
| 470 | |
---|
| 471 | vset = bdd_get_support(f); |
---|
| 472 | for (i=0; i<numOfVars; i++) { |
---|
| 473 | if (var_set_get_elt(vset, i) == 1) { |
---|
| 474 | st_insert(bddidTObaigNames, (char *)(long)i, |
---|
| 475 | GrabBddIdToBaigNames(mddManager, i)); |
---|
| 476 | } |
---|
| 477 | } |
---|
| 478 | var_set_free(vset); |
---|
| 479 | |
---|
| 480 | return bddidTObaigNames; |
---|
| 481 | } |
---|
| 482 | |
---|
| 483 | /**Function******************************************************************** |
---|
| 484 | |
---|
| 485 | Synopsis [return the baigName of a bddid] |
---|
| 486 | |
---|
| 487 | SideEffects [The caller should free the returned char *. This |
---|
| 488 | function is based on the assumption that MDD and MAIG shares the |
---|
| 489 | same naming convention (which is true in VIS).] |
---|
| 490 | |
---|
| 491 | SeeAlso [] |
---|
| 492 | |
---|
| 493 | ******************************************************************************/ |
---|
| 494 | static char * |
---|
| 495 | GrabBddIdToBaigNames( |
---|
| 496 | mdd_manager *mddManager, |
---|
| 497 | int bddid) |
---|
| 498 | { |
---|
| 499 | array_t *mvar_list = mdd_ret_mvar_list(mddManager); |
---|
| 500 | array_t *bvar_list = mdd_ret_bvar_list(mddManager); |
---|
| 501 | bvar_type bv; |
---|
| 502 | mvar_type mv; |
---|
| 503 | int mddid, index, id; |
---|
| 504 | char *nodeName; |
---|
| 505 | char baigName[1024]; |
---|
| 506 | |
---|
| 507 | /* 1. from bddid, get mddid and the index of this bddid in the mddid |
---|
| 508 | */ |
---|
| 509 | bv = array_fetch(bvar_type, bvar_list, bddid); |
---|
| 510 | mddid = bv.mvar_id; |
---|
| 511 | mv = array_fetch(mvar_type, mvar_list, mddid); |
---|
| 512 | arrayForEachItem(int, mv.bvars, index, id) { |
---|
| 513 | if (id == bddid) |
---|
| 514 | break; |
---|
| 515 | } |
---|
| 516 | assert(index <= mv.encode_length -1); |
---|
| 517 | |
---|
| 518 | /* 2. assumptions: (1) mv.name = nodeName, |
---|
| 519 | * (2) index is the same for MDD and MAIG |
---|
| 520 | */ |
---|
| 521 | nodeName = mv.name; |
---|
| 522 | |
---|
| 523 | /* 3. the baigEdge_t's name is ("%s_%d",nodeName,index) |
---|
| 524 | */ |
---|
| 525 | sprintf(baigName, "%s_%d", nodeName, index); |
---|
| 526 | |
---|
| 527 | return util_strsav(baigName); |
---|
| 528 | } |
---|
| 529 | |
---|
| 530 | |
---|
| 531 | |
---|
| 532 | |
---|
| 533 | |
---|
| 534 | |
---|