src/parser/smt2/smt2.cpp

   1 /*********************                                                        */
   2 /*! \file smt2.cpp
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Andrew Reynolds, Kshitij Bansal, Morgan Deters
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2016 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory) and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief Definitions of SMT2 constants.
  13  **
  14  ** Definitions of SMT2 constants.
  15  **/
  16 #include "parser/smt2/smt2.h"
  17
  18
  19 #include "expr/type.h"
  20 #include "parser/antlr_input.h"
  21 #include "parser/parser.h"
  22 #include "parser/smt1/smt1.h"
  23 #include "parser/smt2/smt2_input.h"
  24 #include "smt/command.h"
  25 #include "util/bitvector.h"
  26
  27 // ANTLR defines these, which is really bad!
  28 #undef true
  29 #undef false
  30
  31 namespace CVC4 {
  32 namespace parser {
  33
  34 Smt2::Smt2(ExprManager* exprManager, Input* input, bool strictMode, bool parseOnly) :
  35   Parser(exprManager,input,strictMode,parseOnly),
  36   d_logicSet(false),
  37   d_nextSygusFun(0) {
  38   d_unsatCoreNames.push(std::map<Expr, std::string>());
  39   if( !strictModeEnabled() ) {
  40     addTheory(Smt2::THEORY_CORE);
  41   }
  42 }
  43
  44 void Smt2::setLanguage(InputLanguage lang) {
  45   ((Smt2Input*) getInput())->setLanguage(lang);
  46 }
  47
  48 void Smt2::addArithmeticOperators() {
  49   Parser::addOperator(kind::PLUS);
  50   Parser::addOperator(kind::MINUS);
  51   Parser::addOperator(kind::UMINUS);
  52   Parser::addOperator(kind::MULT);
  53   Parser::addOperator(kind::LT);
  54   Parser::addOperator(kind::LEQ);
  55   Parser::addOperator(kind::GT);
  56   Parser::addOperator(kind::GEQ);
  57 }
  58
  59 void Smt2::addBitvectorOperators() {
  60   addOperator(kind::BITVECTOR_CONCAT, "concat");
  61   addOperator(kind::BITVECTOR_NOT, "bvnot");
  62   addOperator(kind::BITVECTOR_AND, "bvand");
  63   addOperator(kind::BITVECTOR_OR, "bvor");
  64   addOperator(kind::BITVECTOR_NEG, "bvneg");
  65   addOperator(kind::BITVECTOR_PLUS, "bvadd");
  66   addOperator(kind::BITVECTOR_MULT, "bvmul");
  67   addOperator(kind::BITVECTOR_UDIV, "bvudiv");
  68   addOperator(kind::BITVECTOR_UREM, "bvurem");
  69   addOperator(kind::BITVECTOR_SHL, "bvshl");
  70   addOperator(kind::BITVECTOR_LSHR, "bvlshr");
  71   addOperator(kind::BITVECTOR_ULT, "bvult");
  72   addOperator(kind::BITVECTOR_NAND, "bvnand");
  73   addOperator(kind::BITVECTOR_NOR, "bvnor");
  74   addOperator(kind::BITVECTOR_XOR, "bvxor");
  75   addOperator(kind::BITVECTOR_XNOR, "bvxnor");
  76   addOperator(kind::BITVECTOR_COMP, "bvcomp");
  77   addOperator(kind::BITVECTOR_SUB, "bvsub");
  78   addOperator(kind::BITVECTOR_SDIV, "bvsdiv");
  79   addOperator(kind::BITVECTOR_SREM, "bvsrem");
  80   addOperator(kind::BITVECTOR_SMOD, "bvsmod");
  81   addOperator(kind::BITVECTOR_ASHR, "bvashr");
  82   addOperator(kind::BITVECTOR_ULE, "bvule");
  83   addOperator(kind::BITVECTOR_UGT, "bvugt");
  84   addOperator(kind::BITVECTOR_UGE, "bvuge");
  85   addOperator(kind::BITVECTOR_SLT, "bvslt");
  86   addOperator(kind::BITVECTOR_SLE, "bvsle");
  87   addOperator(kind::BITVECTOR_SGT, "bvsgt");
  88   addOperator(kind::BITVECTOR_SGE, "bvsge");
  89   addOperator(kind::BITVECTOR_REDOR, "bvredor");
  90   addOperator(kind::BITVECTOR_REDAND, "bvredand");
  91
  92   Parser::addOperator(kind::BITVECTOR_BITOF);
  93   Parser::addOperator(kind::BITVECTOR_EXTRACT);
  94   Parser::addOperator(kind::BITVECTOR_REPEAT);
  95   Parser::addOperator(kind::BITVECTOR_ZERO_EXTEND);
  96   Parser::addOperator(kind::BITVECTOR_SIGN_EXTEND);
  97   Parser::addOperator(kind::BITVECTOR_ROTATE_LEFT);
  98   Parser::addOperator(kind::BITVECTOR_ROTATE_RIGHT);
  99
 100   Parser::addOperator(kind::INT_TO_BITVECTOR);
 101   Parser::addOperator(kind::BITVECTOR_TO_NAT);
 102 }
 103
 104 void Smt2::addStringOperators() {
 105   addOperator(kind::STRING_CONCAT, "str.++");
 106   addOperator(kind::STRING_LENGTH, "str.len");
 107   addOperator(kind::STRING_SUBSTR, "str.substr" );
 108   addOperator(kind::STRING_STRCTN, "str.contains" );
 109   addOperator(kind::STRING_CHARAT, "str.at" );
 110   addOperator(kind::STRING_STRIDOF, "str.indexof" );
 111   addOperator(kind::STRING_STRREPL, "str.replace" );
 112   addOperator(kind::STRING_PREFIX, "str.prefixof" );
 113   addOperator(kind::STRING_SUFFIX, "str.suffixof" );
 114   addOperator(kind::STRING_ITOS, "int.to.str" );
 115   addOperator(kind::STRING_STOI, "str.to.int" );
 116   addOperator(kind::STRING_U16TOS, "u16.to.str" );
 117   addOperator(kind::STRING_STOU16, "str.to.u16" );
 118   addOperator(kind::STRING_U32TOS, "u32.to.str" );
 119   addOperator(kind::STRING_STOU32, "str.to.u32" );
 120   addOperator(kind::STRING_IN_REGEXP, "str.in.re");
 121   addOperator(kind::STRING_TO_REGEXP, "str.to.re");
 122   addOperator(kind::REGEXP_CONCAT, "re.++");
 123   addOperator(kind::REGEXP_UNION, "re.union");
 124   addOperator(kind::REGEXP_INTER, "re.inter");
 125   addOperator(kind::REGEXP_STAR, "re.*");
 126   addOperator(kind::REGEXP_PLUS, "re.+");
 127   addOperator(kind::REGEXP_OPT, "re.opt");
 128   addOperator(kind::REGEXP_RANGE, "re.range");
 129   addOperator(kind::REGEXP_LOOP, "re.loop");
 130 }
 131
 132 void Smt2::addFloatingPointOperators() {
 133   addOperator(kind::FLOATINGPOINT_FP, "fp");
 134   addOperator(kind::FLOATINGPOINT_EQ, "fp.eq");
 135   addOperator(kind::FLOATINGPOINT_ABS, "fp.abs");
 136   addOperator(kind::FLOATINGPOINT_NEG, "fp.neg");
 137   addOperator(kind::FLOATINGPOINT_PLUS, "fp.add");
 138   addOperator(kind::FLOATINGPOINT_SUB, "fp.sub");
 139   addOperator(kind::FLOATINGPOINT_MULT, "fp.mul");
 140   addOperator(kind::FLOATINGPOINT_DIV, "fp.div");
 141   addOperator(kind::FLOATINGPOINT_FMA, "fp.fma");
 142   addOperator(kind::FLOATINGPOINT_SQRT, "fp.sqrt");
 143   addOperator(kind::FLOATINGPOINT_REM, "fp.rem");
 144   addOperator(kind::FLOATINGPOINT_RTI, "fp.roundToIntegral");
 145   addOperator(kind::FLOATINGPOINT_MIN, "fp.min");
 146   addOperator(kind::FLOATINGPOINT_MAX, "fp.max");
 147   addOperator(kind::FLOATINGPOINT_LEQ, "fp.leq");
 148   addOperator(kind::FLOATINGPOINT_LT, "fp.lt");
 149   addOperator(kind::FLOATINGPOINT_GEQ, "fp.geq");
 150   addOperator(kind::FLOATINGPOINT_GT, "fp.gt");
 151   addOperator(kind::FLOATINGPOINT_ISN, "fp.isNormal");
 152   addOperator(kind::FLOATINGPOINT_ISSN, "fp.isSubnormal");
 153   addOperator(kind::FLOATINGPOINT_ISZ, "fp.isZero");
 154   addOperator(kind::FLOATINGPOINT_ISINF, "fp.isInfinite");
 155   addOperator(kind::FLOATINGPOINT_ISNAN, "fp.isNaN");
 156   addOperator(kind::FLOATINGPOINT_ISNEG, "fp.isNegative");
 157   addOperator(kind::FLOATINGPOINT_ISPOS, "fp.isPositive");
 158   addOperator(kind::FLOATINGPOINT_TO_REAL, "fp.to_real");
 159
 160   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_IEEE_BITVECTOR);
 161   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_FLOATINGPOINT);
 162   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_REAL);
 163   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_SIGNED_BITVECTOR);
 164   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_UNSIGNED_BITVECTOR);
 165   Parser::addOperator(kind::FLOATINGPOINT_TO_UBV);
 166   Parser::addOperator(kind::FLOATINGPOINT_TO_SBV);
 167 }
 168
 169 void Smt2::addSepOperators() {
 170   addOperator(kind::SEP_STAR, "sep");
 171   addOperator(kind::SEP_PTO, "pto");
 172   addOperator(kind::SEP_WAND, "wand");
 173   addOperator(kind::SEP_EMP, "emp");
 174   Parser::addOperator(kind::SEP_STAR);
 175   Parser::addOperator(kind::SEP_PTO);
 176   Parser::addOperator(kind::SEP_WAND);
 177   Parser::addOperator(kind::SEP_EMP);
 178 }
 179
 180 void Smt2::addTheory(Theory theory) {
 181   switch(theory) {
 182   case THEORY_ARRAYS:
 183     addOperator(kind::SELECT, "select");
 184     addOperator(kind::STORE, "store");
 185     break;
 186
 187   case THEORY_BITVECTORS:
 188     addBitvectorOperators();
 189     break;
 190
 191   case THEORY_CORE:
 192     defineType("Bool", getExprManager()->booleanType());
 193     defineVar("true", getExprManager()->mkConst(true));
 194     defineVar("false", getExprManager()->mkConst(false));
 195     Parser::addOperator(kind::AND);
 196     Parser::addOperator(kind::DISTINCT);
 197     Parser::addOperator(kind::EQUAL);
 198     Parser::addOperator(kind::IFF);
 199     Parser::addOperator(kind::IMPLIES);
 200     Parser::addOperator(kind::ITE);
 201     Parser::addOperator(kind::NOT);
 202     Parser::addOperator(kind::OR);
 203     Parser::addOperator(kind::XOR);
 204     break;
 205
 206   case THEORY_REALS_INTS:
 207     defineType("Real", getExprManager()->realType());
 208     Parser::addOperator(kind::DIVISION);
 209     addOperator(kind::TO_INTEGER, "to_int");
 210     addOperator(kind::IS_INTEGER, "is_int");
 211     addOperator(kind::TO_REAL, "to_real");
 212     // falling through on purpose, to add Ints part of Reals_Ints
 213   case THEORY_INTS:
 214     defineType("Int", getExprManager()->integerType());
 215     addArithmeticOperators();
 216     addOperator(kind::INTS_DIVISION, "div");
 217     addOperator(kind::INTS_MODULUS, "mod");
 218     addOperator(kind::ABS, "abs");
 219     Parser::addOperator(kind::DIVISIBLE);
 220     break;
 221
 222   case THEORY_REALS:
 223     defineType("Real", getExprManager()->realType());
 224     addArithmeticOperators();
 225     Parser::addOperator(kind::DIVISION);
 226     break;
 227
 228   case THEORY_QUANTIFIERS:
 229     break;
 230
 231   case THEORY_SETS:
 232     addOperator(kind::UNION, "union");
 233     addOperator(kind::INTERSECTION, "intersection");
 234     addOperator(kind::SETMINUS, "setminus");
 235     addOperator(kind::SUBSET, "subset");
 236     addOperator(kind::MEMBER, "member");
 237     addOperator(kind::SINGLETON, "singleton");
 238     addOperator(kind::INSERT, "insert");
 239     addOperator(kind::CARD, "card");
 240     break;
 241
 242   case THEORY_DATATYPES:
 243     Parser::addOperator(kind::APPLY_CONSTRUCTOR);
 244     Parser::addOperator(kind::APPLY_TESTER);
 245     Parser::addOperator(kind::APPLY_SELECTOR);
 246     Parser::addOperator(kind::APPLY_SELECTOR_TOTAL);
 247     break;
 248
 249   case THEORY_STRINGS:
 250     defineType("String", getExprManager()->stringType());
 251     defineType("Int", getExprManager()->integerType());
 252     addStringOperators();
 253     break;
 254
 255   case THEORY_UF:
 256     Parser::addOperator(kind::APPLY_UF);
 257     break;
 258
 259   case THEORY_FP:
 260     defineType("RoundingMode", getExprManager()->roundingModeType());
 261     defineType("Float16", getExprManager()->mkFloatingPointType(5, 11));
 262     defineType("Float32", getExprManager()->mkFloatingPointType(8, 24));
 263     defineType("Float64", getExprManager()->mkFloatingPointType(11, 53));
 264     defineType("Float128", getExprManager()->mkFloatingPointType(15, 113));
 265     addFloatingPointOperators();
 266     break;
 267
 268   case THEORY_SEP:
 269     addSepOperators();
 270     break;
 271
 272   default:
 273     std::stringstream ss;
 274     ss << "internal error: unsupported theory " << theory;
 275     throw ParserException(ss.str());
 276   }
 277 }
 278
 279 void Smt2::addOperator(Kind kind, const std::string& name) {
 280   Debug("parser") << "Smt2::addOperator( " << kind << ", " << name << " )"
 281                   << std::endl;
 282   Parser::addOperator(kind);
 283   operatorKindMap[name] = kind;
 284 }
 285
 286 Kind Smt2::getOperatorKind(const std::string& name) const {
 287   // precondition: isOperatorEnabled(name)
 288   return operatorKindMap.find(name)->second;
 289 }
 290
 291 bool Smt2::isOperatorEnabled(const std::string& name) const {
 292   return operatorKindMap.find(name) != operatorKindMap.end();
 293 }
 294
 295 bool Smt2::isTheoryEnabled(Theory theory) const {
 296   switch(theory) {
 297   case THEORY_ARRAYS:
 298     return d_logic.isTheoryEnabled(theory::THEORY_ARRAY);
 299   case THEORY_BITVECTORS:
 300     return d_logic.isTheoryEnabled(theory::THEORY_BV);
 301   case THEORY_CORE:
 302     return true;
 303   case THEORY_DATATYPES:
 304     return d_logic.isTheoryEnabled(theory::THEORY_DATATYPES);
 305   case THEORY_INTS:
 306     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 307       d_logic.areIntegersUsed() && ( !d_logic.areRealsUsed() );
 308   case THEORY_REALS:
 309     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 310       ( !d_logic.areIntegersUsed() ) && d_logic.areRealsUsed();
 311   case THEORY_REALS_INTS:
 312     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 313       d_logic.areIntegersUsed() && d_logic.areRealsUsed();
 314   case THEORY_QUANTIFIERS:
 315     return d_logic.isQuantified();
 316   case THEORY_SETS:
 317     return d_logic.isTheoryEnabled(theory::THEORY_SETS);
 318   case THEORY_STRINGS:
 319     return d_logic.isTheoryEnabled(theory::THEORY_STRINGS);
 320   case THEORY_UF:
 321     return d_logic.isTheoryEnabled(theory::THEORY_UF);
 322   case THEORY_FP:
 323     return d_logic.isTheoryEnabled(theory::THEORY_FP);
 324   case THEORY_SEP:
 325     return d_logic.isTheoryEnabled(theory::THEORY_SEP);
 326   default:
 327     std::stringstream ss;
 328     ss << "internal error: unsupported theory " << theory;
 329     throw ParserException(ss.str());
 330   }
 331 }
 332
 333 bool Smt2::logicIsSet() {
 334   return d_logicSet;
 335 }
 336
 337 void Smt2::reset() {
 338   d_logicSet = false;
 339   d_logic = LogicInfo();
 340   operatorKindMap.clear();
 341   d_lastNamedTerm = std::pair<Expr, std::string>();
 342   d_unsatCoreNames = std::stack< std::map<Expr, std::string> >();
 343   this->Parser::reset();
 344
 345   d_unsatCoreNames.push(std::map<Expr, std::string>());
 346   if( !strictModeEnabled() ) {
 347     addTheory(Smt2::THEORY_CORE);
 348   }
 349 }
 350
 351 void Smt2::resetAssertions() {
 352   this->Parser::reset();
 353 }
 354
 355 void Smt2::setLogic(std::string name) {
 356   if(sygus()) {
 357     if(name == "Arrays") {
 358       name = "AUF";
 359     } else if(name == "Reals") {
 360       name = "UFLRA";
 361     } else if(name == "LIA") {
 362       name = "UFLIA";
 363     } else if(name == "LRA") {
 364       name = "UFLRA";
 365     } else if(name == "LIRA") {
 366       name = "UFLIRA";
 367     } else if(name == "BV") {
 368       name = "UFBV";
 369     } else if(name == "SLIA") {
 370       name = "UFSLIA";
 371     } else if(name == "ALL_SUPPORTED") {
 372       //no change
 373     } else {
 374       std::stringstream ss;
 375       ss << "Unknown SyGuS background logic `" << name << "'";
 376       parseError(ss.str());
 377     }
 378   }
 379
 380   d_logicSet = true;
 381   if(logicIsForced()) {
 382     d_logic = getForcedLogic();
 383   } else {
 384     d_logic = name;
 385   }
 386
 387   // Core theory belongs to every logic
 388   addTheory(THEORY_CORE);
 389
 390   if(d_logic.isTheoryEnabled(theory::THEORY_UF)) {
 391     addTheory(THEORY_UF);
 392   }
 393
 394   if(d_logic.isTheoryEnabled(theory::THEORY_ARITH)) {
 395     if(d_logic.areIntegersUsed()) {
 396       if(d_logic.areRealsUsed()) {
 397         addTheory(THEORY_REALS_INTS);
 398       } else {
 399         addTheory(THEORY_INTS);
 400       }
 401     } else if(d_logic.areRealsUsed()) {
 402       addTheory(THEORY_REALS);
 403     }
 404   }
 405
 406   if(d_logic.isTheoryEnabled(theory::THEORY_ARRAY)) {
 407     addTheory(THEORY_ARRAYS);
 408   }
 409
 410   if(d_logic.isTheoryEnabled(theory::THEORY_BV)) {
 411     addTheory(THEORY_BITVECTORS);
 412   }
 413
 414   if(d_logic.isTheoryEnabled(theory::THEORY_DATATYPES)) {
 415     addTheory(THEORY_DATATYPES);
 416   }
 417
 418   if(d_logic.isTheoryEnabled(theory::THEORY_SETS)) {
 419     addTheory(THEORY_SETS);
 420   }
 421
 422   if(d_logic.isTheoryEnabled(theory::THEORY_STRINGS)) {
 423     addTheory(THEORY_STRINGS);
 424   }
 425
 426   if(d_logic.isQuantified()) {
 427     addTheory(THEORY_QUANTIFIERS);
 428   }
 429
 430   if (d_logic.isTheoryEnabled(theory::THEORY_FP)) {
 431     addTheory(THEORY_FP);
 432   }
 433
 434   if (d_logic.isTheoryEnabled(theory::THEORY_SEP)) {
 435     addTheory(THEORY_SEP);
 436   }
 437
 438 }/* Smt2::setLogic() */
 439
 440 void Smt2::setInfo(const std::string& flag, const SExpr& sexpr) {
 441   // TODO: ???
 442 }
 443
 444 void Smt2::setOption(const std::string& flag, const SExpr& sexpr) {
 445   // TODO: ???
 446 }
 447
 448 void Smt2::checkThatLogicIsSet() {
 449   if( ! logicIsSet() ) {
 450     if(strictModeEnabled()) {
 451       parseError("set-logic must appear before this point.");
 452     } else {
 453       if(sygus()) {
 454         setLogic("LIA");
 455       } else {
 456         warning("No set-logic command was given before this point.");
 457         warning("CVC4 will assume the non-standard ALL_SUPPORTED logic.");
 458         warning("Consider setting a stricter logic for (likely) better performance.");
 459         warning("To suppress this warning in the future use (set-logic ALL_SUPPORTED).");
 460
 461         setLogic("ALL_SUPPORTED");
 462       }
 463
 464       Command* c = new SetBenchmarkLogicCommand("ALL_SUPPORTED");
 465       c->setMuted(true);
 466       preemptCommand(c);
 467     }
 468   }
 469 }
 470
 471 /* The include are managed in the lexer but called in the parser */
 472 // Inspired by http://www.antlr3.org/api/C/interop.html
 473
 474 static bool newInputStream(const std::string& filename, pANTLR3_LEXER lexer) {
 475   Debug("parser") << "Including " << filename << std::endl;
 476   // Create a new input stream and take advantage of built in stream stacking
 477   // in C target runtime.
 478   //
 479   pANTLR3_INPUT_STREAM    in;
 480 #ifdef CVC4_ANTLR3_OLD_INPUT_STREAM
 481   in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) filename.c_str());
 482 #else /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 483   in = antlr3FileStreamNew((pANTLR3_UINT8) filename.c_str(), ANTLR3_ENC_8BIT);
 484 #endif /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 485   if( in == NULL ) {
 486     Debug("parser") << "Can't open " << filename << std::endl;
 487     return false;
 488   }
 489   // Same thing as the predefined PUSHSTREAM(in);
 490   lexer->pushCharStream(lexer, in);
 491   // restart it
 492   //lexer->rec->state->tokenStartCharIndex      = -10;
 493   //lexer->emit(lexer);
 494
 495   // Note that the input stream is not closed when it EOFs, I don't bother
 496   // to do it here, but it is up to you to track streams created like this
 497   // and destroy them when the whole parse session is complete. Remember that you
 498   // don't want to do this until all tokens have been manipulated all the way through
 499   // your tree parsers etc as the token does not store the text it just refers
 500   // back to the input stream and trying to get the text for it will abort if you
 501   // close the input stream too early.
 502
 503   //TODO what said before
 504   return true;
 505 }
 506
 507 void Smt2::includeFile(const std::string& filename) {
 508   // security for online version
 509   if(!canIncludeFile()) {
 510     parseError("include-file feature was disabled for this run.");
 511   }
 512
 513   // Get the lexer
 514   AntlrInput* ai = static_cast<AntlrInput*>(getInput());
 515   pANTLR3_LEXER lexer = ai->getAntlr3Lexer();
 516   // get the name of the current stream "Does it work inside an include?"
 517   const std::string inputName = ai->getInputStreamName();
 518
 519   // Find the directory of the current input file
 520   std::string path;
 521   size_t pos = inputName.rfind('/');
 522   if(pos != std::string::npos) {
 523     path = std::string(inputName, 0, pos + 1);
 524   }
 525   path.append(filename);
 526   if(!newInputStream(path, lexer)) {
 527     parseError("Couldn't open include file `" + path + "'");
 528   }
 529 }
 530
 531 Expr Smt2::mkSygusVar(const std::string& name, const Type& type, bool isPrimed) {
 532   Expr e = mkBoundVar(name, type);
 533   d_sygusVars.push_back(e);
 534   d_sygusVarPrimed[e] = false;
 535   if( isPrimed ){
 536     std::stringstream ss;
 537     ss << name << "'";
 538     Expr ep = mkBoundVar(ss.str(), type);
 539     d_sygusVars.push_back(ep);
 540     d_sygusVarPrimed[ep] = true;
 541   }
 542   return e;
 543 }
 544
 545 void collectSygusGrammarTypesFor( Type range, std::vector< Type >& types, std::map< Type, std::vector< DatatypeConstructorArg > >& sels ){
 546   if( !range.isBoolean() ){
 547     if( std::find( types.begin(), types.end(), range )==types.end() ){
 548       Debug("parser-sygus") << "...will make grammar for " << range << std::endl;
 549       types.push_back( range );
 550       if( range.isDatatype() ){
 551         const Datatype& dt = ((DatatypeType)range).getDatatype();
 552         for( unsigned i=0; i<dt.getNumConstructors(); i++ ){
 553           for( unsigned j=0; j<dt[i].getNumArgs(); j++ ){
 554             Type crange = ((SelectorType)dt[i][j].getType()).getRangeType();
 555             sels[crange].push_back( dt[i][j] );
 556             collectSygusGrammarTypesFor( crange, types, sels );
 557           }
 558         }
 559       }
 560     }
 561   }
 562 }
 563
 564 void Smt2::mkSygusDefaultGrammar( const Type& range, Expr& bvl, const std::string& fun, std::vector<CVC4::Datatype>& datatypes,
 565                                   std::vector<Type>& sorts, std::vector< std::vector<Expr> >& ops, std::vector<Expr> sygus_vars, int& startIndex ) {
 566
 567   //if( !range.isBoolean() && !range.isInteger() && !range.isBitVector() && !range.isDatatype() ){
 568   //  parseError("No default grammar for type.");
 569   //}
 570   startIndex = -1;
 571   Debug("parser-sygus") << "Construct default grammar for " << fun << " " << range << std::endl;
 572   std::map< CVC4::Type, CVC4::Type > sygus_to_builtin;
 573
 574   std::vector< Type > types;
 575   std::map< Type, std::vector< DatatypeConstructorArg > > sels;
 576   //types for each of the variables
 577   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 578     collectSygusGrammarTypesFor( sygus_vars[i].getType(), types, sels );
 579   }
 580   //types connected to range
 581   collectSygusGrammarTypesFor( range, types, sels );
 582
 583   //name of boolean sort
 584   std::stringstream ssb;
 585   ssb << fun << "_Bool";
 586   std::string dbname = ssb.str();
 587   Type unres_bt = mkUnresolvedType(ssb.str());
 588
 589   std::vector< Type > unres_types;
 590   std::map< Type, Type > type_to_unres;
 591   for( unsigned i=0; i<types.size(); i++ ){
 592     std::stringstream ss;
 593     ss << fun << "_" << types[i];
 594     std::string dname = ss.str();
 595     datatypes.push_back(Datatype(dname));
 596     ops.push_back(std::vector<Expr>());
 597     //make unresolved type
 598     Type unres_t = mkUnresolvedType(dname);
 599     unres_types.push_back(unres_t);
 600     type_to_unres[types[i]] = unres_t;
 601     sygus_to_builtin[unres_t] = types[i];
 602   }
 603   for( unsigned i=0; i<types.size(); i++ ){
 604     Debug("parser-sygus") << "Make grammar for " << types[i] << " " << unres_types[i] << std::endl;
 605     std::vector<std::string> cnames;
 606     std::vector<std::vector<CVC4::Type> > cargs;
 607     std::vector<std::string> unresolved_gterm_sym;
 608     Type unres_t = unres_types[i];
 609     //add variables
 610     for( unsigned j=0; j<sygus_vars.size(); j++ ){
 611       if( sygus_vars[j].getType()==types[i] ){
 612         std::stringstream ss;
 613         ss << sygus_vars[j];
 614         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 615         ops[i].push_back( sygus_vars[j] );
 616         cnames.push_back( ss.str() );
 617         cargs.push_back( std::vector< CVC4::Type >() );
 618       }
 619     }
 620     //add constants
 621     std::vector< Expr > consts;
 622     mkSygusConstantsForType( types[i], consts );
 623     for( unsigned j=0; j<consts.size(); j++ ){
 624       std::stringstream ss;
 625       ss << consts[j];
 626       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 627       ops[i].push_back( consts[j] );
 628       cnames.push_back( ss.str() );
 629       cargs.push_back( std::vector< CVC4::Type >() );
 630     }
 631     //ITE
 632     CVC4::Kind k = kind::ITE;
 633     Debug("parser-sygus") << "...add for " << k << std::endl;
 634     ops[i].push_back(getExprManager()->operatorOf(k));
 635     cnames.push_back( kind::kindToString(k) );
 636     cargs.push_back( std::vector< CVC4::Type >() );
 637     cargs.back().push_back(unres_bt);
 638     cargs.back().push_back(unres_t);
 639     cargs.back().push_back(unres_t);
 640
 641     if( types[i].isInteger() ){
 642       for( unsigned j=0; j<2; j++ ){
 643         CVC4::Kind k = j==0 ? kind::PLUS : kind::MINUS;
 644         Debug("parser-sygus") << "...add for " << k << std::endl;
 645         ops[i].push_back(getExprManager()->operatorOf(k));
 646         cnames.push_back(kind::kindToString(k));
 647         cargs.push_back( std::vector< CVC4::Type >() );
 648         cargs.back().push_back(unres_t);
 649         cargs.back().push_back(unres_t);
 650       }
 651     }else if( types[i].isDatatype() ){
 652       Debug("parser-sygus") << "...add for constructors" << std::endl;
 653       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 654       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 655         Debug("parser-sygus") << "...for " << dt[k].getName() << std::endl;
 656         ops[i].push_back( dt[k].getConstructor() );
 657         cnames.push_back( dt[k].getName() );
 658         cargs.push_back( std::vector< CVC4::Type >() );
 659         for( unsigned j=0; j<dt[k].getNumArgs(); j++ ){
 660           Type crange = ((SelectorType)dt[k][j].getType()).getRangeType();
 661           //Assert( type_to_unres.find(crange)!=type_to_unres.end() );
 662           cargs.back().push_back( type_to_unres[crange] );
 663         }
 664       }
 665     }else{
 666       std::stringstream sserr;
 667       sserr << "No implementation for default Sygus grammar of type " << types[i] << std::endl;
 668       warning(sserr.str());
 669     }
 670     //add for all selectors to this type
 671     if( !sels[types[i]].empty() ){
 672       Debug("parser-sygus") << "...add for selectors" << std::endl;
 673       for( unsigned j=0; j<sels[types[i]].size(); j++ ){
 674         Debug("parser-sygus") << "...for " << sels[types[i]][j].getName() << std::endl;
 675         Type arg_type = ((SelectorType)sels[types[i]][j].getType()).getDomain();
 676         ops[i].push_back( sels[types[i]][j].getSelector() );
 677         cnames.push_back( sels[types[i]][j].getName() );
 678         cargs.push_back( std::vector< CVC4::Type >() );
 679         //Assert( type_to_unres.find(arg_type)!=type_to_unres.end() );
 680         cargs.back().push_back( type_to_unres[arg_type] );
 681       }
 682     }
 683     Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 684     datatypes[i].setSygus( types[i], bvl, true, true );
 685     mkSygusDatatype( datatypes[i], ops[i], cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 686     sorts.push_back( types[i] );
 687     //set start index if applicable
 688     if( types[i]==range ){
 689       startIndex = i;
 690     }
 691   }
 692
 693   //make Boolean type
 694   Type btype = getExprManager()->booleanType();
 695   datatypes.push_back(Datatype(dbname));
 696   ops.push_back(std::vector<Expr>());
 697   std::vector<std::string> cnames;
 698   std::vector<std::vector<CVC4::Type> > cargs;
 699   std::vector<std::string> unresolved_gterm_sym;
 700   Debug("parser-sygus") << "Make grammar for " << btype << " " << datatypes.back() << std::endl;
 701   //add variables
 702   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 703     if( sygus_vars[i].getType().isBoolean() ){
 704       std::stringstream ss;
 705       ss << sygus_vars[i];
 706       Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 707       ops.back().push_back( sygus_vars[i] );
 708       cnames.push_back( ss.str() );
 709       cargs.push_back( std::vector< CVC4::Type >() );
 710     }
 711   }
 712   //add constants if no variables and no connected types
 713   if( ops.back().empty() && types.empty() ){
 714     std::vector< Expr > consts;
 715     mkSygusConstantsForType( btype, consts );
 716     for( unsigned j=0; j<consts.size(); j++ ){
 717       std::stringstream ss;
 718       ss << consts[j];
 719       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 720       ops.back().push_back( consts[j] );
 721       cnames.push_back( ss.str() );
 722       cargs.push_back( std::vector< CVC4::Type >() );
 723     }
 724   }
 725   //add operators
 726   for( unsigned i=0; i<3; i++ ){
 727     CVC4::Kind k = i==0 ? kind::NOT : ( i==1 ? kind::AND : kind::OR );
 728     Debug("parser-sygus") << "...add for " << k << std::endl;
 729     ops.back().push_back(getExprManager()->operatorOf(k));
 730     cnames.push_back(kind::kindToString(k));
 731     cargs.push_back( std::vector< CVC4::Type >() );
 732     if( k==kind::NOT ){
 733       cargs.back().push_back(unres_bt);
 734     }else if( k==kind::AND || k==kind::OR ){
 735       cargs.back().push_back(unres_bt);
 736       cargs.back().push_back(unres_bt);
 737     }
 738   }
 739   //add predicates for types
 740   for( unsigned i=0; i<types.size(); i++ ){
 741     Debug("parser-sygus") << "...add predicates for " << types[i] << std::endl;
 742     //add equality per type
 743     CVC4::Kind k = kind::EQUAL;
 744     Debug("parser-sygus") << "...add for " << k << std::endl;
 745     ops.back().push_back(getExprManager()->operatorOf(k));
 746     std::stringstream ss;
 747     ss << kind::kindToString(k) << "_" << types[i];
 748     cnames.push_back(ss.str());
 749     cargs.push_back( std::vector< CVC4::Type >() );
 750     cargs.back().push_back(unres_types[i]);
 751     cargs.back().push_back(unres_types[i]);
 752     //type specific predicates
 753     if( types[i].isInteger() ){
 754       CVC4::Kind k = kind::LEQ;
 755       Debug("parser-sygus") << "...add for " << k << std::endl;
 756       ops.back().push_back(getExprManager()->operatorOf(k));
 757       cnames.push_back(kind::kindToString(k));
 758       cargs.push_back( std::vector< CVC4::Type >() );
 759       cargs.back().push_back(unres_types[i]);
 760       cargs.back().push_back(unres_types[i]);
 761     }else if( types[i].isDatatype() ){
 762       //add for testers
 763       Debug("parser-sygus") << "...add for testers" << std::endl;
 764       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 765       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 766         Debug("parser-sygus") << "...for " << dt[k].getTesterName() << std::endl;
 767         ops.back().push_back(dt[k].getTester());
 768         cnames.push_back(dt[k].getTesterName());
 769         cargs.push_back( std::vector< CVC4::Type >() );
 770         cargs.back().push_back(unres_types[i]);
 771       }
 772     }
 773   }
 774   if( range==btype ){
 775     startIndex = sorts.size();
 776   }
 777   Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 778   datatypes.back().setSygus( btype, bvl, true, true );
 779   mkSygusDatatype( datatypes.back(), ops.back(), cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 780   sorts.push_back( btype );
 781
 782   Debug("parser-sygus") << "...finished make default grammar for " << fun << " " << range << std::endl;
 783 }
 784
 785 void Smt2::mkSygusConstantsForType( const Type& type, std::vector<CVC4::Expr>& ops ) {
 786   if( type.isInteger() ){
 787     ops.push_back(getExprManager()->mkConst(Rational(0)));
 788     ops.push_back(getExprManager()->mkConst(Rational(1)));
 789   }else if( type.isBitVector() ){
 790     unsigned sz = ((BitVectorType)type).getSize();
 791     BitVector bval0(sz, (unsigned int)0);
 792     ops.push_back( getExprManager()->mkConst(bval0) );
 793     BitVector bval1(sz, (unsigned int)1);
 794     ops.push_back( getExprManager()->mkConst(bval1) );
 795   }else if( type.isBoolean() ){
 796     ops.push_back(getExprManager()->mkConst(true));
 797     ops.push_back(getExprManager()->mkConst(false));
 798   }
 799   //TODO : others?
 800 }
 801
 802 //  This method adds N operators to ops[index], N names to cnames[index] and N type argument vectors to cargs[index] (where typically N=1)
 803 //  This method may also add new elements pairwise into datatypes/sorts/ops/cnames/cargs in the case of non-flat gterms.
 804 void Smt2::processSygusGTerm( CVC4::SygusGTerm& sgt, int index,
 805                               std::vector< CVC4::Datatype >& datatypes,
 806                               std::vector< CVC4::Type>& sorts,
 807                               std::vector< std::vector<CVC4::Expr> >& ops,
 808                               std::vector< std::vector<std::string> >& cnames,
 809                               std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 810                               std::vector< bool >& allow_const,
 811                               std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 812                               std::vector<CVC4::Expr>& sygus_vars,
 813                               std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin, std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr,
 814                               CVC4::Type& ret, bool isNested ){
 815   if( sgt.d_gterm_type==SygusGTerm::gterm_op || sgt.d_gterm_type==SygusGTerm::gterm_let ){
 816     Debug("parser-sygus") << "Add " << sgt.d_expr << " to datatype " << index << std::endl;
 817     Kind oldKind;
 818     Kind newKind = kind::UNDEFINED_KIND;
 819     //convert to UMINUS if one child of MINUS
 820     if( sgt.d_children.size()==1 && sgt.d_expr==getExprManager()->operatorOf(kind::MINUS) ){
 821       oldKind = kind::MINUS;
 822       newKind = kind::UMINUS;
 823     }
 824     //convert to IFF if boolean EQUAL
 825     if( sgt.d_expr==getExprManager()->operatorOf(kind::EQUAL) ){
 826       Type ctn = sgt.d_children[0].d_type;
 827       std::map< CVC4::Type, CVC4::Type >::iterator it = sygus_to_builtin.find( ctn );
 828       if( it != sygus_to_builtin.end() && it->second.isBoolean() ){
 829         oldKind = kind::EQUAL;
 830         newKind = kind::IFF;
 831       }
 832     }
 833     if( newKind!=kind::UNDEFINED_KIND ){
 834       Expr newExpr = getExprManager()->operatorOf(newKind);
 835       Debug("parser-sygus") << "Replace " << sgt.d_expr << " with " << newExpr << std::endl;
 836       sgt.d_expr = newExpr;
 837       std::string oldName = kind::kindToString(oldKind);
 838       std::string newName = kind::kindToString(newKind);
 839       size_t pos = 0;
 840       if((pos = sgt.d_name.find(oldName, pos)) != std::string::npos){
 841         sgt.d_name.replace(pos, oldName.length(), newName);
 842       }
 843     }
 844     ops[index].push_back( sgt.d_expr );
 845     cnames[index].push_back( sgt.d_name );
 846     cargs[index].push_back( std::vector< CVC4::Type >() );
 847     for( unsigned i=0; i<sgt.d_children.size(); i++ ){
 848       std::stringstream ss;
 849       ss << datatypes[index].getName() << "_" << ops[index].size() << "_arg_" << i;
 850       std::string sub_dname = ss.str();
 851       //add datatype for child
 852       Type null_type;
 853       pushSygusDatatypeDef( null_type, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
 854       int sub_dt_index = datatypes.size()-1;
 855       //process child
 856       Type sub_ret;
 857       processSygusGTerm( sgt.d_children[i], sub_dt_index, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 858                          sygus_vars, sygus_to_builtin, sygus_to_builtin_expr, sub_ret, true );
 859       //process the nested gterm (either pop the last datatype, or flatten the argument)
 860       Type tt = processSygusNestedGTerm( sub_dt_index, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 861                                          sygus_to_builtin, sygus_to_builtin_expr, sub_ret );
 862       cargs[index].back().push_back(tt);
 863     }
 864     //if let, must create operator
 865     if( sgt.d_gterm_type==SygusGTerm::gterm_let ){
 866       processSygusLetConstructor( sgt.d_let_vars, index, datatypes, sorts, ops, cnames, cargs,
 867                                   sygus_vars, sygus_to_builtin, sygus_to_builtin_expr );
 868     }
 869   }else if( sgt.d_gterm_type==SygusGTerm::gterm_constant ){
 870     if( sgt.getNumChildren()!=0 ){
 871       parseError("Bad syntax for Sygus Constant.");
 872     }
 873     std::vector< Expr > consts;
 874     mkSygusConstantsForType( sgt.d_type, consts );
 875     Debug("parser-sygus") << "...made " << consts.size() << " constants." << std::endl;
 876     for( unsigned i=0; i<consts.size(); i++ ){
 877       std::stringstream ss;
 878       ss << consts[i];
 879       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 880       ops[index].push_back( consts[i] );
 881       cnames[index].push_back( ss.str() );
 882       cargs[index].push_back( std::vector< CVC4::Type >() );
 883     }
 884     allow_const[index] = true;
 885   }else if( sgt.d_gterm_type==SygusGTerm::gterm_variable || sgt.d_gterm_type==SygusGTerm::gterm_input_variable ){
 886     if( sgt.getNumChildren()!=0 ){
 887       parseError("Bad syntax for Sygus Variable.");
 888     }
 889     Debug("parser-sygus") << "...process " << sygus_vars.size() << " variables." << std::endl;
 890     for( unsigned i=0; i<sygus_vars.size(); i++ ){
 891       if( sygus_vars[i].getType()==sgt.d_type ){
 892         std::stringstream ss;
 893         ss << sygus_vars[i];
 894         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 895         ops[index].push_back( sygus_vars[i] );
 896         cnames[index].push_back( ss.str() );
 897         cargs[index].push_back( std::vector< CVC4::Type >() );
 898       }
 899     }
 900   }else if( sgt.d_gterm_type==SygusGTerm::gterm_nested_sort ){
 901     ret = sgt.d_type;
 902   }else if( sgt.d_gterm_type==SygusGTerm::gterm_unresolved ){
 903     if( isNested ){
 904       if( isUnresolvedType(sgt.d_name) ){
 905         ret = getSort(sgt.d_name);
 906       }else{
 907         //nested, unresolved symbol...fail
 908         std::stringstream ss;
 909         ss << "Cannot handle nested unresolved symbol " << sgt.d_name << std::endl;
 910         parseError(ss.str());
 911       }
 912     }else{
 913       //will resolve when adding constructors
 914       unresolved_gterm_sym[index].push_back(sgt.d_name);
 915     }
 916   }else if( sgt.d_gterm_type==SygusGTerm::gterm_ignore ){
 917
 918   }
 919 }
 920
 921 bool Smt2::pushSygusDatatypeDef( Type t, std::string& dname,
 922                                   std::vector< CVC4::Datatype >& datatypes,
 923                                   std::vector< CVC4::Type>& sorts,
 924                                   std::vector< std::vector<CVC4::Expr> >& ops,
 925                                   std::vector< std::vector<std::string> >& cnames,
 926                                   std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 927                                   std::vector< bool >& allow_const,
 928                                   std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 929   sorts.push_back(t);
 930   datatypes.push_back(Datatype(dname));
 931   ops.push_back(std::vector<Expr>());
 932   cnames.push_back(std::vector<std::string>());
 933   cargs.push_back(std::vector<std::vector<CVC4::Type> >());
 934   allow_const.push_back(false);
 935   unresolved_gterm_sym.push_back(std::vector< std::string >());
 936   return true;
 937 }
 938
 939 bool Smt2::popSygusDatatypeDef( std::vector< CVC4::Datatype >& datatypes,
 940                                  std::vector< CVC4::Type>& sorts,
 941                                  std::vector< std::vector<CVC4::Expr> >& ops,
 942                                  std::vector< std::vector<std::string> >& cnames,
 943                                  std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 944                                  std::vector< bool >& allow_const,
 945                                  std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 946   sorts.pop_back();
 947   datatypes.pop_back();
 948   ops.pop_back();
 949   cnames.pop_back();
 950   cargs.pop_back();
 951   allow_const.pop_back();
 952   unresolved_gterm_sym.pop_back();
 953   return true;
 954 }
 955
 956 Type Smt2::processSygusNestedGTerm( int sub_dt_index, std::string& sub_dname, std::vector< CVC4::Datatype >& datatypes,
 957                                     std::vector< CVC4::Type>& sorts,
 958                                     std::vector< std::vector<CVC4::Expr> >& ops,
 959                                     std::vector< std::vector<std::string> >& cnames,
 960                                     std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 961                                     std::vector< bool >& allow_const,
 962                                     std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 963                                     std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
 964                                     std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr, Type sub_ret ) {
 965   Type t = sub_ret;
 966   Debug("parser-sygus") << "Argument is ";
 967   if( t.isNull() ){
 968     //then, it is the datatype we constructed, which should have a single constructor
 969     t = mkUnresolvedType(sub_dname);
 970     Debug("parser-sygus") << "inline flattening of (auxiliary, local) datatype " << t << std::endl;
 971     Debug("parser-sygus") << ": to compute type, construct ground term witnessing the grammar, #cons=" << cargs[sub_dt_index].size() << std::endl;
 972     if( cargs[sub_dt_index].empty() ){
 973       parseError(std::string("Internal error : datatype for nested gterm does not have a constructor."));
 974     }
 975     Expr sop = ops[sub_dt_index][0];
 976     Type curr_t;
 977     if( sop.getKind() != kind::BUILTIN && ( sop.isConst() || cargs[sub_dt_index][0].empty() ) ){
 978       curr_t = sop.getType();
 979       Debug("parser-sygus") << ": it is constant/0-arg cons " << sop << " with type " << sop.getType() << ", debug=" << sop.isConst() << " " << cargs[sub_dt_index][0].size() << std::endl;
 980       sygus_to_builtin_expr[t] = sop;
 981       //store that term sop has dedicated sygus type t
 982       if( d_sygus_bound_var_type.find( sop )==d_sygus_bound_var_type.end() ){
 983         d_sygus_bound_var_type[sop] = t;
 984       }
 985     }else{
 986       std::vector< Expr > children;
 987       if( sop.getKind() != kind::BUILTIN ){
 988         children.push_back( sop );
 989       }
 990       for( unsigned i=0; i<cargs[sub_dt_index][0].size(); i++ ){
 991         std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[sub_dt_index][0][i] );
 992         if( it==sygus_to_builtin_expr.end() ){
 993           if( sygus_to_builtin.find( cargs[sub_dt_index][0][i] )==sygus_to_builtin.end() ){
 994             std::stringstream ss;
 995             ss << "Missing builtin type for type " << cargs[sub_dt_index][0][i] << "!" << std::endl;
 996             ss << "Builtin types are currently : " << std::endl;
 997             for( std::map< CVC4::Type, CVC4::Type >::iterator itb = sygus_to_builtin.begin(); itb != sygus_to_builtin.end(); ++itb ){
 998               ss << "  " << itb->first << " -> " << itb->second << std::endl;
 999             }
1000             parseError(ss.str());
1001           }
1002           Type bt = sygus_to_builtin[cargs[sub_dt_index][0][i]];
1003           Debug("parser-sygus") << ":  child " << i << " introduce type elem for " << cargs[sub_dt_index][0][i] << " " << bt << std::endl;
1004           std::stringstream ss;
1005           ss << t << "_x_" << i;
1006           Expr bv = mkBoundVar(ss.str(), bt);
1007           children.push_back( bv );
1008           d_sygus_bound_var_type[bv] = cargs[sub_dt_index][0][i];
1009         }else{
1010           Debug("parser-sygus") << ":  child " << i << " existing sygus to builtin expr : " << it->second << std::endl;
1011           children.push_back( it->second );
1012         }
1013       }
1014       Kind sk = sop.getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(sop);
1015       Debug("parser-sygus") << ": operator " << sop << " with " << sop.getKind() << " " << sk << std::endl;
1016       Expr e = getExprManager()->mkExpr( sk, children );
1017       Debug("parser-sygus") << ": constructed " << e << ", which has type " << e.getType() << std::endl;
1018       curr_t = e.getType();
1019       sygus_to_builtin_expr[t] = e;
1020     }
1021     sorts[sub_dt_index] = curr_t;
1022     sygus_to_builtin[t] = curr_t;
1023   }else{
1024     Debug("parser-sygus") << "simple argument " << t << std::endl;
1025     Debug("parser-sygus") << "...removing " << datatypes.back().getName() << std::endl;
1026     //otherwise, datatype was unecessary
1027     //pop argument datatype definition
1028     popSygusDatatypeDef( datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
1029   }
1030   return t;
1031 }
1032
1033 void Smt2::processSygusLetConstructor( std::vector< CVC4::Expr >& let_vars,
1034                                        int index,
1035                                        std::vector< CVC4::Datatype >& datatypes,
1036                                        std::vector< CVC4::Type>& sorts,
1037                                        std::vector< std::vector<CVC4::Expr> >& ops,
1038                                        std::vector< std::vector<std::string> >& cnames,
1039                                        std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
1040                                        std::vector<CVC4::Expr>& sygus_vars,
1041                                        std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
1042                                        std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr ) {
1043   std::vector< CVC4::Expr > let_define_args;
1044   Expr let_body;
1045   int dindex = cargs[index].size()-1;
1046   Debug("parser-sygus") << "Process let constructor for datatype " << datatypes[index].getName() << ", #subtypes = " << cargs[index][dindex].size() << std::endl;
1047   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1048     Debug("parser-sygus") << "  " << i << " : " << cargs[index][dindex][i] << std::endl;
1049     if( i+1==cargs[index][dindex].size() ){
1050       std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[index][dindex][i] );
1051       if( it!=sygus_to_builtin_expr.end() ){
1052         let_body = it->second;
1053       }else{
1054         std::stringstream ss;
1055         ss << datatypes[index].getName() << "_body";
1056         let_body = mkBoundVar(ss.str(), sygus_to_builtin[cargs[index][dindex][i]]);
1057         d_sygus_bound_var_type[let_body] = cargs[index][dindex][i];
1058       }
1059     }
1060   }
1061   Debug("parser-sygus") << std::endl;
1062   Debug("parser-sygus") << "Body is " << let_body << std::endl;
1063   Debug("parser-sygus") << "# let vars = " << let_vars.size() << std::endl;
1064   for( unsigned i=0; i<let_vars.size(); i++ ){
1065     Debug("parser-sygus") << "  let var " << i << " : " << let_vars[i] << " " << let_vars[i].getType() << std::endl;
1066     let_define_args.push_back( let_vars[i] );
1067   }
1068   /*
1069   Debug("parser-sygus") << "index = " << index << ", start index = " << start_index << ", #Current datatypes = " << datatypes.size() << std::endl;
1070   for( unsigned i=start_index; i<datatypes.size(); i++ ){
1071     Debug("parser-sygus") << "  datatype " << i << " : " << datatypes[i].getName() << ", #cons = " << cargs[i].size() << std::endl;
1072     if( !cargs[i].empty() ){
1073       Debug("parser-sygus") << "  operator 0 is " << ops[i][0] << std::endl;
1074       Debug("parser-sygus") << "  cons 0 has " << cargs[i][0].size() << " sub fields." << std::endl;
1075       for( unsigned j=0; j<cargs[i][0].size(); j++ ){
1076         Type bt = sygus_to_builtin[cargs[i][0][j]];
1077         Debug("parser-sygus") << "    cons 0, selector " << j << " : " << cargs[i][0][j] << " " << bt << std::endl;
1078       }
1079     }
1080   }
1081   */
1082   //last argument is the return, pop
1083   cargs[index][dindex].pop_back();
1084   collectSygusLetArgs( let_body, cargs[index][dindex], let_define_args );
1085
1086   Debug("parser-sygus") << "Make define-fun with " << cargs[index][dindex].size() << " arguments..." << std::endl;
1087   std::vector<CVC4::Type> fsorts;
1088   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1089     Debug("parser-sygus") << "  " << i << " : " << let_define_args[i] << " " << let_define_args[i].getType() << " " << cargs[index][dindex][i] << std::endl;
1090     fsorts.push_back(let_define_args[i].getType());
1091   }
1092
1093   Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1094   std::stringstream ss;
1095   ss << datatypes[index].getName() << "_let";
1096   Expr let_func = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1097   d_sygus_defined_funs.push_back( let_func );
1098   preemptCommand( new DefineFunctionCommand(ss.str(), let_func, let_define_args, let_body) );
1099
1100   ops[index].pop_back();
1101   ops[index].push_back( let_func );
1102   cnames[index].pop_back();
1103   cnames[index].push_back(ss.str());
1104
1105   //mark function as let constructor
1106   d_sygus_let_func_to_vars[let_func].insert( d_sygus_let_func_to_vars[let_func].end(), let_define_args.begin(), let_define_args.end() );
1107   d_sygus_let_func_to_body[let_func] = let_body;
1108   d_sygus_let_func_to_num_input_vars[let_func] = let_vars.size();
1109 }
1110
1111
1112 void Smt2::collectSygusLetArgs( CVC4::Expr e, std::vector< CVC4::Type >& sygusArgs, std::vector< CVC4::Expr >& builtinArgs ) {
1113   if( e.getKind()==kind::BOUND_VARIABLE ){
1114     if( std::find( builtinArgs.begin(), builtinArgs.end(), e )==builtinArgs.end() ){
1115       builtinArgs.push_back( e );
1116       sygusArgs.push_back( d_sygus_bound_var_type[e] );
1117       if( d_sygus_bound_var_type[e].isNull() ){
1118         std::stringstream ss;
1119         ss << "While constructing body of let gterm, can't map " << e << " to sygus type." << std::endl;
1120         parseError(ss.str());
1121       }
1122     }
1123   }else{
1124     for( unsigned i=0; i<e.getNumChildren(); i++ ){
1125       collectSygusLetArgs( e[i], sygusArgs, builtinArgs );
1126     }
1127   }
1128 }
1129
1130 void Smt2::setSygusStartIndex( std::string& fun, int startIndex,
1131                                std::vector< CVC4::Datatype >& datatypes,
1132                                std::vector< CVC4::Type>& sorts,
1133                                std::vector< std::vector<CVC4::Expr> >& ops ) {
1134   if( startIndex>0 ){
1135     CVC4::Datatype tmp_dt = datatypes[0];
1136     Type tmp_sort = sorts[0];
1137     std::vector< Expr > tmp_ops;
1138     tmp_ops.insert( tmp_ops.end(), ops[0].begin(), ops[0].end() );
1139     datatypes[0] = datatypes[startIndex];
1140     sorts[0] = sorts[startIndex];
1141     ops[0].clear();
1142     ops[0].insert( ops[0].end(), ops[startIndex].begin(), ops[startIndex].end() );
1143     datatypes[startIndex] = tmp_dt;
1144     sorts[startIndex] = tmp_sort;
1145     ops[startIndex].clear();
1146     ops[startIndex].insert( ops[startIndex].begin(), tmp_ops.begin(), tmp_ops.end() );
1147   }else if( startIndex<0 ){
1148     std::stringstream ss;
1149     ss << "warning: no symbol named Start for synth-fun " << fun << std::endl;
1150     warning(ss.str());
1151   }
1152 }
1153
1154 void Smt2::defineSygusFuns() {
1155   // only define each one once
1156   while(d_nextSygusFun < d_sygusFuns.size()) {
1157     std::pair<std::string, Expr> p = d_sygusFuns[d_nextSygusFun];
1158     std::string fun = p.first;
1159     Debug("parser-sygus") << "Sygus : define fun " << fun << std::endl;
1160     Expr eval = p.second;
1161     FunctionType evalType = eval.getType();
1162     std::vector<Type> argTypes = evalType.getArgTypes();
1163     Type rangeType = evalType.getRangeType();
1164     Debug("parser-sygus") << "...eval type : " << evalType << ", #args=" << argTypes.size() << std::endl;
1165
1166     // first make the function type
1167     std::vector<Expr> sygusVars;
1168     std::vector<Type> funType;
1169     for(size_t j = 1; j < argTypes.size(); ++j) {
1170       funType.push_back(argTypes[j]);
1171       std::stringstream ss;
1172       ss << fun << "_v_" << j;
1173       sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), argTypes[j]));
1174     }
1175     Type funt;
1176     if( !funType.empty() ){
1177       funt = getExprManager()->mkFunctionType(funType, rangeType);
1178       Debug("parser-sygus") << "...eval function type : " << funt << std::endl;
1179
1180       // copy the bound vars
1181       /*
1182       std::vector<Expr> sygusVars;
1183       //std::vector<Type> types;
1184       for(size_t i = 0; i < d_sygusVars.size(); ++i) {
1185         std::stringstream ss;
1186         ss << d_sygusVars[i];
1187         Type type = d_sygusVars[i].getType();
1188         sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), type));
1189         //types.push_back(type);
1190       }
1191       Debug("parser-sygus") << "...made vars, #vars=" << sygusVars.size() << std::endl;
1192       */
1193
1194       //Type t = getExprManager()->mkFunctionType(types, rangeType);
1195       //Debug("parser-sygus") << "...function type : " << t << std::endl;
1196     }else{
1197       funt = rangeType;
1198     }
1199     Expr lambda = mkFunction(fun, funt, ExprManager::VAR_FLAG_DEFINED);
1200     Debug("parser-sygus") << "...made function : " << lambda << std::endl;
1201     std::vector<Expr> applyv;
1202     Expr funbv = getExprManager()->mkBoundVar(std::string("f") + fun, argTypes[0]);
1203     d_sygusFunSymbols.push_back(funbv);
1204     applyv.push_back(eval);
1205     applyv.push_back(funbv);
1206     for(size_t i = 0; i < sygusVars.size(); ++i) {
1207       applyv.push_back(sygusVars[i]);
1208     }
1209     Expr apply = getExprManager()->mkExpr(kind::APPLY_UF, applyv);
1210     Debug("parser-sygus") << "...made apply " << apply << std::endl;
1211     Debug("parser-sygus") << "--> Define " << fun << " as " << lambda << " " << apply << std::endl;
1212     Command* cmd = new DefineFunctionCommand(fun, lambda, sygusVars, apply);
1213     preemptCommand(cmd);
1214
1215     ++d_nextSygusFun;
1216   }
1217 }
1218
1219 void Smt2::mkSygusDatatype( CVC4::Datatype& dt, std::vector<CVC4::Expr>& ops,
1220                             std::vector<std::string>& cnames, std::vector< std::vector< CVC4::Type > >& cargs,
1221                             std::vector<std::string>& unresolved_gterm_sym,
1222                             std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin ) {
1223   Debug("parser-sygus") << "Making sygus datatype " << dt.getName() << std::endl;
1224   Debug("parser-sygus") << "  add constructors..." << std::endl;
1225   for( int i=0; i<(int)cnames.size(); i++ ){
1226     bool is_dup = false;
1227     bool is_dup_op = false;
1228     Expr let_body;
1229     std::vector< Expr > let_args;
1230     unsigned let_num_input_args = 0;
1231     for( int j=0; j<i; j++ ){
1232       if( ops[i]==ops[j] ){
1233         is_dup_op = true;
1234         if( cargs[i].size()==cargs[j].size() ){
1235           is_dup = true;
1236           for( unsigned k=0; k<cargs[i].size(); k++ ){
1237             if( cargs[i][k]!=cargs[j][k] ){
1238               is_dup = false;
1239               break;
1240             }
1241           }
1242         }
1243         if( is_dup ){
1244           break;
1245         }
1246       }
1247     }
1248     if( is_dup ){
1249       Debug("parser-sygus") << "--> Duplicate gterm : " << ops[i] << " at " << i << std::endl;
1250       ops.erase( ops.begin() + i, ops.begin() + i + 1 );
1251       cnames.erase( cnames.begin() + i, cnames.begin() + i + 1 );
1252       cargs.erase( cargs.begin() + i, cargs.begin() + i + 1 );
1253       i--;
1254     }else if( is_dup_op ){
1255       Debug("parser-sygus") << "--> Duplicate gterm operator : " << ops[i] << " at " << i << std::endl;
1256       //make into define-fun
1257       std::vector<CVC4::Type> fsorts;
1258       for( unsigned j=0; j<cargs[i].size(); j++ ){
1259         Type bt = sygus_to_builtin[cargs[i][j]];
1260         std::stringstream ss;
1261         ss << dt.getName() << "_x_" << i << "_" << j;
1262         Expr v = mkBoundVar(ss.str(), bt);
1263         let_args.push_back( v );
1264         fsorts.push_back( bt );
1265         Debug("parser-sygus") << ": var " << i << " " << v << " with type " << bt << " from " << cargs[i][j] << std::endl;
1266       }
1267       //make the let_body
1268       std::vector< Expr > children;
1269       if( ops[i].getKind() != kind::BUILTIN ){
1270         children.push_back( ops[i] );
1271       }
1272       children.insert( children.end(), let_args.begin(), let_args.end() );
1273       Kind sk = ops[i].getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(ops[i]);
1274       Debug("parser-sygus") << ": replace " << ops[i] << " " << ops[i].getKind() << " " << sk << std::endl;
1275       let_body = getExprManager()->mkExpr( sk, children );
1276       Debug("parser-sygus") << ": new body of function is " << let_body << std::endl;
1277
1278       Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1279       Debug("parser-sygus") << ": function type is " << ft << std::endl;
1280       std::stringstream ss;
1281       ss << dt.getName() << "_df_" << i;
1282       //replace operator and name
1283       ops[i] = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1284       cnames[i] = ss.str();
1285       d_sygus_defined_funs.push_back( ops[i] );
1286       preemptCommand( new DefineFunctionCommand(ss.str(), ops[i], let_args, let_body) );
1287       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, 0 );
1288     }else{
1289       std::map< CVC4::Expr, CVC4::Expr >::iterator it = d_sygus_let_func_to_body.find( ops[i] );
1290       if( it!=d_sygus_let_func_to_body.end() ){
1291         let_body = it->second;
1292         let_args.insert( let_args.end(), d_sygus_let_func_to_vars[ops[i]].begin(), d_sygus_let_func_to_vars[ops[i]].end() );
1293         let_num_input_args = d_sygus_let_func_to_num_input_vars[ops[i]];
1294       }
1295       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, let_num_input_args );
1296     }
1297   }
1298   Debug("parser-sygus") << "  add constructors for unresolved symbols..." << std::endl;
1299   if( !unresolved_gterm_sym.empty() ){
1300     std::vector< Type > types;
1301     Debug("parser-sygus") << "...resolve " << unresolved_gterm_sym.size() << " symbols..." << std::endl;
1302     for( unsigned i=0; i<unresolved_gterm_sym.size(); i++ ){
1303       Debug("parser-sygus") << "  resolve : " << unresolved_gterm_sym[i] << std::endl;
1304       if( isUnresolvedType(unresolved_gterm_sym[i]) ){
1305         Debug("parser-sygus") << "    it is an unresolved type." << std::endl;
1306         Type t = getSort(unresolved_gterm_sym[i]);
1307         if( std::find( types.begin(), types.end(), t )==types.end() ){
1308           types.push_back( t );
1309           //identity element
1310           Type bt = dt.getSygusType();
1311           Debug("parser-sygus") << ":  make identity function for " << bt << ", argument type " << t << std::endl;
1312           std::stringstream ss;
1313           ss << t << "_x_id";
1314           Expr let_body = mkBoundVar(ss.str(), bt);
1315           std::vector< Expr > let_args;
1316           let_args.push_back( let_body );
1317           //make the identity function
1318           Type ft = getExprManager()->mkFunctionType(bt, bt);
1319           std::stringstream ssid;
1320           ssid << unresolved_gterm_sym[i] << "_id";
1321           Expr id_op = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1322           d_sygus_defined_funs.push_back( id_op );
1323           preemptCommand( new DefineFunctionCommand(ssid.str(), id_op, let_args, let_body) );
1324           //make the sygus argument list
1325           std::vector< Type > id_carg;
1326           id_carg.push_back( t );
1327           addSygusDatatypeConstructor( dt, id_op, unresolved_gterm_sym[i], id_carg, let_body, let_args, 0 );
1328           //add to operators
1329           ops.push_back( id_op );
1330         }
1331       }else{
1332         Debug("parser-sygus") << "    ignore. (likely a free let variable)" << std::endl;
1333       }
1334     }
1335   }
1336
1337 }
1338
1339 void Smt2::addSygusDatatypeConstructor( CVC4::Datatype& dt, CVC4::Expr op, std::string& cname, std::vector< CVC4::Type >& cargs,
1340                                         CVC4::Expr& let_body, std::vector< CVC4::Expr >& let_args, unsigned let_num_input_args ) {
1341   Debug("parser-sygus") << "--> Add constructor " << cname << " to " << dt.getName() << std::endl;
1342   if( !let_body.isNull() ){
1343     Debug("parser-sygus") << "    let body = " << let_body << ", args = " << let_args.size() << "," << let_num_input_args << std::endl;
1344     //TODO : remove arguments not occurring in body
1345     //if this is a self identity function, ignore
1346     if( let_args.size()==0 && let_args[0]==let_body ){
1347       Debug("parser-sygus") << "    identity function " << cargs[0] << " to " << dt.getName() << std::endl;
1348       //TODO
1349     }
1350   }
1351   std::string name = dt.getName() + "_" + cname;
1352   std::string testerId("is-");
1353   testerId.append(name);
1354   checkDeclaration(name, CHECK_UNDECLARED, SYM_VARIABLE);
1355   checkDeclaration(testerId, CHECK_UNDECLARED, SYM_VARIABLE);
1356   CVC4::DatatypeConstructor c(name, testerId );
1357   c.setSygus( op, let_body, let_args, let_num_input_args );
1358   for( unsigned j=0; j<cargs.size(); j++ ){
1359     Debug("parser-sygus-debug") << "  arg " << j << " : " << cargs[j] << std::endl;
1360     std::stringstream sname;
1361     sname << name << "_" << j;
1362     c.addArg(sname.str(), cargs[j]);
1363   }
1364   dt.addConstructor(c);
1365 }
1366
1367
1368 // i is index in datatypes/ops
1369 // j is index is datatype
1370 Expr Smt2::getSygusAssertion( std::vector<DatatypeType>& datatypeTypes, std::vector< std::vector<Expr> >& ops,
1371                               std::map<DatatypeType, Expr>& evals, std::vector<Expr>& terms,
1372                               Expr eval, const Datatype& dt, size_t i, size_t j ) {
1373   const DatatypeConstructor& ctor = dt[j];
1374   Debug("parser-sygus") << "Sygus : process constructor " << j << " : " << dt[j] << std::endl;
1375   std::vector<Expr> bvs, extraArgs;
1376   for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1377     std::string vname = "v_" + ctor[k].getName();
1378     Expr bv = getExprManager()->mkBoundVar(vname, SelectorType(ctor[k].getType()).getRangeType());
1379     bvs.push_back(bv);
1380     extraArgs.push_back(bv);
1381   }
1382   if( !terms[0].isNull() ){
1383     bvs.insert(bvs.end(), terms[0].begin(), terms[0].end());
1384   }
1385   Expr bvl;
1386   if( !bvs.empty() ){
1387     bvl = getExprManager()->mkExpr(kind::BOUND_VAR_LIST, bvs);
1388   }
1389   Debug("parser-sygus") << "...made bv list " << bvl << std::endl;
1390   std::vector<Expr> patv;
1391   patv.push_back(eval);
1392   std::vector<Expr> applyv;
1393   applyv.push_back(ctor.getConstructor());
1394   applyv.insert(applyv.end(), extraArgs.begin(), extraArgs.end());
1395   for(size_t k = 0; k < applyv.size(); ++k) {
1396   }
1397   Expr cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1398   Debug("parser-sygus") << "...made eval ctor apply " << cpatv << std::endl;
1399   patv.push_back(cpatv);
1400   if( !terms[0].isNull() ){
1401     patv.insert(patv.end(), terms[0].begin(), terms[0].end());
1402   }
1403   Expr evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1404   Debug("parser-sygus") << "...made eval apply " << evalApply << std::endl;
1405   std::vector<Expr> builtApply;
1406   for(size_t k = 0; k < extraArgs.size(); ++k) {
1407     std::vector<Expr> patvb;
1408     patvb.push_back(evals[DatatypeType(extraArgs[k].getType())]);
1409     patvb.push_back(extraArgs[k]);
1410     if( !terms[0].isNull() ){
1411       patvb.insert(patvb.end(), terms[0].begin(), terms[0].end());
1412     }
1413     Debug("parser-sygus-debug") << "...add to built apply " << evals[DatatypeType(extraArgs[k].getType())] << " " << extraArgs[k] << " " << extraArgs[k].getType() << std::endl;
1414     builtApply.push_back(getExprManager()->mkExpr(kind::APPLY_UF, patvb));
1415     Debug("parser-sygus-debug") << "...added " << builtApply.back() << std::endl;
1416   }
1417   for(size_t k = 0; k < builtApply.size(); ++k) {
1418   }
1419   Expr builtTerm;
1420   Debug("parser-sygus") << "...operator is : " << ops[i][j] << ", type = " << ops[i][j].getType() << ", kind = " << ops[i][j].getKind() << ", is defined = " << isDefinedFunction( ops[i][j] ) << std::endl;
1421   if( ops[i][j].getKind() != kind::BUILTIN ){
1422     Kind ok = kind::UNDEFINED_KIND;
1423     if( isDefinedFunction( ops[i][j] ) || std::find( d_sygus_defined_funs.begin(), d_sygus_defined_funs.end(), ops[i][j] )!=d_sygus_defined_funs.end() ){
1424       ok = kind::APPLY;
1425     }else{
1426       Type t = ops[i][j].getType();
1427       if( t.isConstructor() ){
1428         ok = kind::APPLY_CONSTRUCTOR;
1429       }else if( t.isSelector() ){
1430         ok = kind::APPLY_SELECTOR;
1431       }else if( t.isTester() ){
1432         ok = kind::APPLY_TESTER;
1433       }else{
1434         ok = getExprManager()->operatorToKind( ops[i][j] );
1435       }
1436     }
1437     Debug("parser-sygus") << "...processed operator kind : " << ok << std::endl;
1438     if( ok!=kind::UNDEFINED_KIND ){
1439       builtTerm = getExprManager()->mkExpr(ok, ops[i][j], builtApply);
1440     }else{
1441       builtTerm = ops[i][j];
1442     }
1443   }else{
1444     if( !builtApply.empty() ){
1445       builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1446     }else{
1447       builtTerm = ops[i][j];
1448     }
1449   }
1450   Debug("parser-sygus") << "...made built term " << builtTerm << std::endl;
1451   Expr assertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1452   if( !bvl.isNull() ){
1453     Expr pattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1454     pattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, pattern);
1455     assertion = getExprManager()->mkExpr(kind::FORALL, bvl, assertion, pattern);
1456   }
1457   Debug("parser-sygus") << "...made assertion " << assertion << std::endl;
1458
1459   //linearize multiplication if possible
1460   if( builtTerm.getKind()==kind::MULT ){
1461     for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1462       Type at = SelectorType(ctor[k].getType()).getRangeType();
1463       if( at.isDatatype() ){
1464         DatatypeType atd = (DatatypeType)SelectorType(ctor[k].getType()).getRangeType();
1465         Debug("parser-sygus") << "Argument " << k << " " << atd << std::endl;
1466         std::vector<DatatypeType>::iterator itd = std::find( datatypeTypes.begin(), datatypeTypes.end(), atd );
1467         if( itd!=datatypeTypes.end() ){
1468           Debug("parser-sygus2") << "Exists in datatypeTypes." << std::endl;
1469           unsigned index = itd-datatypeTypes.begin();
1470           Debug("parser-sygus2") << "index = " << index << std::endl;
1471           bool isConst = true;
1472           for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1473             Debug("parser-sygus2") << "ops[" << cc << "]=" << ops[index][cc] << std::endl;
1474             if( ops[index][cc].getKind() != kind::CONST_RATIONAL ){
1475               isConst = false;
1476               break;
1477             }
1478           }
1479           if( isConst ){
1480             Debug("parser-sygus") << "Linearize multiplication " << ctor << " based on argument " << k << std::endl;
1481             const Datatype & atdd = atd.getDatatype();
1482             std::vector<Expr> assertions;
1483             std::vector<Expr> nbvs;
1484             for( unsigned a=0; a<bvl.getNumChildren(); a++ ){
1485               if( a!=k ){
1486                 nbvs.push_back( bvl[a] );
1487               }
1488             }
1489             Expr nbvl = getExprManager()->mkExpr( kind::BOUND_VAR_LIST, nbvs );
1490             for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1491               //Make new assertion based on partially instantiating existing
1492               applyv[k+1] = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, atdd[cc].getConstructor());
1493               Debug("parser-sygus") << "applyv " << applyv[k+1] << std::endl;
1494               cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1495               Debug("parser-sygus") << "cpatv " << cpatv << std::endl;
1496               patv[1] = cpatv;
1497               evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1498               Debug("parser-sygus") << "evalApply " << evalApply << std::endl;
1499               builtApply[k] = ops[index][cc];
1500               Debug("parser-sygus") << "builtApply " << builtApply[k] << std::endl;
1501               builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1502               Debug("parser-sygus") << "builtTerm " << builtTerm << std::endl;
1503               Expr eassertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1504               Expr epattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1505               epattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, epattern);
1506               eassertion = getExprManager()->mkExpr(kind::FORALL, nbvl, eassertion, epattern);
1507               assertions.push_back( eassertion );
1508             }
1509             assertion = assertions.size()==1 ? assertions[0] : getExprManager()->mkExpr( kind::AND, assertions );
1510             Debug("parser-sygus") << "...(linearized) assertion is: " << assertion << std::endl;
1511           }
1512         }
1513       }
1514     }
1515   }
1516   return assertion;
1517 }
1518
1519 const void Smt2::getSygusPrimedVars( std::vector<Expr>& vars, bool isPrimed ) {
1520   for( unsigned i=0; i<d_sygusVars.size(); i++ ){
1521     Expr v = d_sygusVars[i];
1522     std::map< Expr, bool >::iterator it = d_sygusVarPrimed.find( v );
1523     if( it!=d_sygusVarPrimed.end() ){
1524       if( it->second==isPrimed ){
1525         vars.push_back( v );
1526       }
1527     }else{
1528       //should never happen
1529     }
1530   }
1531 }
1532
1533 }/* CVC4::parser namespace */
1534 }/* CVC4 namespace */