src/parser/smt2/smt2.cpp

   1 /*********************                                                        */
   2 /*! \file smt2.cpp
   3  ** \verbatim
   4  ** Original author: Christopher L. Conway
   5  ** Major contributors: Kshitij Bansal, Morgan Deters
   6  ** Minor contributors (to current version): Andrew Reynolds, Clark Barrett, Tianyi Liang
   7  ** This file is part of the CVC4 project.
   8  ** Copyright (c) 2009-2014  New York University and The University of Iowa
   9  ** See the file COPYING in the top-level source directory for licensing
  10  ** 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 "smt_util/command.h"
  24 #include "util/bitvector.h"
  25
  26 // ANTLR defines these, which is really bad!
  27 #undef true
  28 #undef false
  29
  30 namespace CVC4 {
  31 namespace parser {
  32
  33 Smt2::Smt2(ExprManager* exprManager, Input* input, bool strictMode, bool parseOnly) :
  34   Parser(exprManager,input,strictMode,parseOnly),
  35   d_logicSet(false),
  36   d_nextSygusFun(0) {
  37   d_unsatCoreNames.push(std::map<Expr, std::string>());
  38   if( !strictModeEnabled() ) {
  39     addTheory(Smt2::THEORY_CORE);
  40   }
  41 }
  42
  43 void Smt2::addArithmeticOperators() {
  44   Parser::addOperator(kind::PLUS);
  45   Parser::addOperator(kind::MINUS);
  46   Parser::addOperator(kind::UMINUS);
  47   Parser::addOperator(kind::MULT);
  48   Parser::addOperator(kind::LT);
  49   Parser::addOperator(kind::LEQ);
  50   Parser::addOperator(kind::GT);
  51   Parser::addOperator(kind::GEQ);
  52 }
  53
  54 void Smt2::addBitvectorOperators() {
  55   addOperator(kind::BITVECTOR_CONCAT, "concat");
  56   addOperator(kind::BITVECTOR_NOT, "bvnot");
  57   addOperator(kind::BITVECTOR_AND, "bvand");
  58   addOperator(kind::BITVECTOR_OR, "bvor");
  59   addOperator(kind::BITVECTOR_NEG, "bvneg");
  60   addOperator(kind::BITVECTOR_PLUS, "bvadd");
  61   addOperator(kind::BITVECTOR_MULT, "bvmul");
  62   addOperator(kind::BITVECTOR_UDIV, "bvudiv");
  63   addOperator(kind::BITVECTOR_UREM, "bvurem");
  64   addOperator(kind::BITVECTOR_SHL, "bvshl");
  65   addOperator(kind::BITVECTOR_LSHR, "bvlshr");
  66   addOperator(kind::BITVECTOR_ULT, "bvult");
  67   addOperator(kind::BITVECTOR_NAND, "bvnand");
  68   addOperator(kind::BITVECTOR_NOR, "bvnor");
  69   addOperator(kind::BITVECTOR_XOR, "bvxor");
  70   addOperator(kind::BITVECTOR_XNOR, "bvxnor");
  71   addOperator(kind::BITVECTOR_COMP, "bvcomp");
  72   addOperator(kind::BITVECTOR_SUB, "bvsub");
  73   addOperator(kind::BITVECTOR_SDIV, "bvsdiv");
  74   addOperator(kind::BITVECTOR_SREM, "bvsrem");
  75   addOperator(kind::BITVECTOR_SMOD, "bvsmod");
  76   addOperator(kind::BITVECTOR_ASHR, "bvashr");
  77   addOperator(kind::BITVECTOR_ULE, "bvule");
  78   addOperator(kind::BITVECTOR_UGT, "bvugt");
  79   addOperator(kind::BITVECTOR_UGE, "bvuge");
  80   addOperator(kind::BITVECTOR_SLT, "bvslt");
  81   addOperator(kind::BITVECTOR_SLE, "bvsle");
  82   addOperator(kind::BITVECTOR_SGT, "bvsgt");
  83   addOperator(kind::BITVECTOR_SGE, "bvsge");
  84   addOperator(kind::BITVECTOR_REDOR, "bvredor");
  85   addOperator(kind::BITVECTOR_REDAND, "bvredand");
  86
  87   Parser::addOperator(kind::BITVECTOR_BITOF);
  88   Parser::addOperator(kind::BITVECTOR_EXTRACT);
  89   Parser::addOperator(kind::BITVECTOR_REPEAT);
  90   Parser::addOperator(kind::BITVECTOR_ZERO_EXTEND);
  91   Parser::addOperator(kind::BITVECTOR_SIGN_EXTEND);
  92   Parser::addOperator(kind::BITVECTOR_ROTATE_LEFT);
  93   Parser::addOperator(kind::BITVECTOR_ROTATE_RIGHT);
  94
  95   Parser::addOperator(kind::INT_TO_BITVECTOR);
  96   Parser::addOperator(kind::BITVECTOR_TO_NAT);
  97 }
  98
  99 void Smt2::addStringOperators() {
 100   addOperator(kind::STRING_CONCAT, "str.++");
 101   addOperator(kind::STRING_LENGTH, "str.len");
 102   addOperator(kind::STRING_SUBSTR, "str.substr" );
 103   addOperator(kind::STRING_STRCTN, "str.contains" );
 104   addOperator(kind::STRING_CHARAT, "str.at" );
 105   addOperator(kind::STRING_STRIDOF, "str.indexof" );
 106   addOperator(kind::STRING_STRREPL, "str.replace" );
 107   addOperator(kind::STRING_PREFIX, "str.prefixof" );
 108   addOperator(kind::STRING_SUFFIX, "str.suffixof" );
 109   addOperator(kind::STRING_ITOS, "int.to.str" );
 110   addOperator(kind::STRING_STOI, "str.to.int" );
 111   addOperator(kind::STRING_U16TOS, "u16.to.str" );
 112   addOperator(kind::STRING_STOU16, "str.to.u16" );
 113   addOperator(kind::STRING_U32TOS, "u32.to.str" );
 114   addOperator(kind::STRING_STOU32, "str.to.u32" );
 115   addOperator(kind::STRING_IN_REGEXP, "str.in.re");
 116   addOperator(kind::STRING_TO_REGEXP, "str.to.re");
 117   addOperator(kind::REGEXP_CONCAT, "re.++");
 118   addOperator(kind::REGEXP_UNION, "re.union");
 119   addOperator(kind::REGEXP_INTER, "re.inter");
 120   addOperator(kind::REGEXP_STAR, "re.*");
 121   addOperator(kind::REGEXP_PLUS, "re.+");
 122   addOperator(kind::REGEXP_OPT, "re.opt");
 123   addOperator(kind::REGEXP_RANGE, "re.range");
 124   addOperator(kind::REGEXP_LOOP, "re.loop");
 125 }
 126
 127 void Smt2::addFloatingPointOperators() {
 128   addOperator(kind::FLOATINGPOINT_FP, "fp");
 129   addOperator(kind::FLOATINGPOINT_EQ, "fp.eq");
 130   addOperator(kind::FLOATINGPOINT_ABS, "fp.abs");
 131   addOperator(kind::FLOATINGPOINT_NEG, "fp.neg");
 132   addOperator(kind::FLOATINGPOINT_PLUS, "fp.add");
 133   addOperator(kind::FLOATINGPOINT_SUB, "fp.sub");
 134   addOperator(kind::FLOATINGPOINT_MULT, "fp.mul");
 135   addOperator(kind::FLOATINGPOINT_DIV, "fp.div");
 136   addOperator(kind::FLOATINGPOINT_FMA, "fp.fma");
 137   addOperator(kind::FLOATINGPOINT_SQRT, "fp.sqrt");
 138   addOperator(kind::FLOATINGPOINT_REM, "fp.rem");
 139   addOperator(kind::FLOATINGPOINT_RTI, "fp.roundToIntegral");
 140   addOperator(kind::FLOATINGPOINT_MIN, "fp.min");
 141   addOperator(kind::FLOATINGPOINT_MAX, "fp.max");
 142   addOperator(kind::FLOATINGPOINT_LEQ, "fp.leq");
 143   addOperator(kind::FLOATINGPOINT_LT, "fp.lt");
 144   addOperator(kind::FLOATINGPOINT_GEQ, "fp.geq");
 145   addOperator(kind::FLOATINGPOINT_GT, "fp.gt");
 146   addOperator(kind::FLOATINGPOINT_ISN, "fp.isNormal");
 147   addOperator(kind::FLOATINGPOINT_ISSN, "fp.isSubnormal");
 148   addOperator(kind::FLOATINGPOINT_ISZ, "fp.isZero");
 149   addOperator(kind::FLOATINGPOINT_ISINF, "fp.isInfinite");
 150   addOperator(kind::FLOATINGPOINT_ISNAN, "fp.isNaN");
 151   addOperator(kind::FLOATINGPOINT_ISNEG, "fp.isNegative");
 152   addOperator(kind::FLOATINGPOINT_ISPOS, "fp.isPositive");
 153   addOperator(kind::FLOATINGPOINT_TO_REAL, "fp.to_real");
 154
 155   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_IEEE_BITVECTOR);
 156   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_FLOATINGPOINT);
 157   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_REAL);
 158   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_SIGNED_BITVECTOR);
 159   Parser::addOperator(kind::FLOATINGPOINT_TO_FP_UNSIGNED_BITVECTOR);
 160   Parser::addOperator(kind::FLOATINGPOINT_TO_UBV);
 161   Parser::addOperator(kind::FLOATINGPOINT_TO_SBV);
 162 }
 163
 164
 165 void Smt2::addTheory(Theory theory) {
 166   switch(theory) {
 167   case THEORY_ARRAYS:
 168     addOperator(kind::SELECT, "select");
 169     addOperator(kind::STORE, "store");
 170     break;
 171
 172   case THEORY_BITVECTORS:
 173     addBitvectorOperators();
 174     break;
 175
 176   case THEORY_CORE:
 177     defineType("Bool", getExprManager()->booleanType());
 178     defineVar("true", getExprManager()->mkConst(true));
 179     defineVar("false", getExprManager()->mkConst(false));
 180     Parser::addOperator(kind::AND);
 181     Parser::addOperator(kind::DISTINCT);
 182     Parser::addOperator(kind::EQUAL);
 183     Parser::addOperator(kind::IFF);
 184     Parser::addOperator(kind::IMPLIES);
 185     Parser::addOperator(kind::ITE);
 186     Parser::addOperator(kind::NOT);
 187     Parser::addOperator(kind::OR);
 188     Parser::addOperator(kind::XOR);
 189     break;
 190
 191   case THEORY_REALS_INTS:
 192     defineType("Real", getExprManager()->realType());
 193     Parser::addOperator(kind::DIVISION);
 194     addOperator(kind::TO_INTEGER, "to_int");
 195     addOperator(kind::IS_INTEGER, "is_int");
 196     addOperator(kind::TO_REAL, "to_real");
 197     // falling through on purpose, to add Ints part of Reals_Ints
 198   case THEORY_INTS:
 199     defineType("Int", getExprManager()->integerType());
 200     addArithmeticOperators();
 201     addOperator(kind::INTS_DIVISION, "div");
 202     addOperator(kind::INTS_MODULUS, "mod");
 203     addOperator(kind::ABS, "abs");
 204     Parser::addOperator(kind::DIVISIBLE);
 205     break;
 206
 207   case THEORY_REALS:
 208     defineType("Real", getExprManager()->realType());
 209     addArithmeticOperators();
 210     Parser::addOperator(kind::DIVISION);
 211     break;
 212
 213   case THEORY_QUANTIFIERS:
 214     break;
 215
 216   case THEORY_SETS:
 217     addOperator(kind::UNION, "union");
 218     addOperator(kind::INTERSECTION, "intersection");
 219     addOperator(kind::SETMINUS, "setminus");
 220     addOperator(kind::SUBSET, "subset");
 221     addOperator(kind::MEMBER, "member");
 222     addOperator(kind::SINGLETON, "singleton");
 223     addOperator(kind::INSERT, "insert");
 224     break;
 225
 226   case THEORY_DATATYPES:
 227     Parser::addOperator(kind::APPLY_CONSTRUCTOR);
 228     Parser::addOperator(kind::APPLY_TESTER);
 229     Parser::addOperator(kind::APPLY_SELECTOR);
 230     Parser::addOperator(kind::APPLY_SELECTOR_TOTAL);
 231     break;
 232
 233   case THEORY_STRINGS:
 234     defineType("String", getExprManager()->stringType());
 235     defineType("Int", getExprManager()->integerType());
 236     addStringOperators();
 237     break;
 238
 239   case THEORY_UF:
 240     Parser::addOperator(kind::APPLY_UF);
 241     break;
 242
 243   case THEORY_FP:
 244     defineType("RoundingMode", getExprManager()->roundingModeType());
 245     defineType("Float16", getExprManager()->mkFloatingPointType(5, 11));
 246     defineType("Float32", getExprManager()->mkFloatingPointType(8, 24));
 247     defineType("Float64", getExprManager()->mkFloatingPointType(11, 53));
 248     defineType("Float128", getExprManager()->mkFloatingPointType(15, 113));
 249     addFloatingPointOperators();
 250     break;
 251
 252   default:
 253     std::stringstream ss;
 254     ss << "internal error: unsupported theory " << theory;
 255     throw ParserException(ss.str());
 256   }
 257 }
 258
 259 void Smt2::addOperator(Kind kind, const std::string& name) {
 260   Debug("parser") << "Smt2::addOperator( " << kind << ", " << name << " )"
 261                   << std::endl;
 262   Parser::addOperator(kind);
 263   operatorKindMap[name] = kind;
 264 }
 265
 266 Kind Smt2::getOperatorKind(const std::string& name) const {
 267   // precondition: isOperatorEnabled(name)
 268   return operatorKindMap.find(name)->second;
 269 }
 270
 271 bool Smt2::isOperatorEnabled(const std::string& name) const {
 272   return operatorKindMap.find(name) != operatorKindMap.end();
 273 }
 274
 275 bool Smt2::isTheoryEnabled(Theory theory) const {
 276   switch(theory) {
 277   case THEORY_ARRAYS:
 278     return d_logic.isTheoryEnabled(theory::THEORY_ARRAY);
 279   case THEORY_BITVECTORS:
 280     return d_logic.isTheoryEnabled(theory::THEORY_BV);
 281   case THEORY_CORE:
 282     return true;
 283   case THEORY_DATATYPES:
 284     return d_logic.isTheoryEnabled(theory::THEORY_DATATYPES);
 285   case THEORY_INTS:
 286     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 287       d_logic.areIntegersUsed() && ( !d_logic.areRealsUsed() );
 288   case THEORY_REALS:
 289     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 290       ( !d_logic.areIntegersUsed() ) && d_logic.areRealsUsed();
 291   case THEORY_REALS_INTS:
 292     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 293       d_logic.areIntegersUsed() && d_logic.areRealsUsed();
 294   case THEORY_QUANTIFIERS:
 295     return d_logic.isQuantified();
 296   case THEORY_SETS:
 297     return d_logic.isTheoryEnabled(theory::THEORY_SETS);
 298   case THEORY_STRINGS:
 299     return d_logic.isTheoryEnabled(theory::THEORY_STRINGS);
 300   case THEORY_UF:
 301     return d_logic.isTheoryEnabled(theory::THEORY_UF);
 302   case THEORY_FP:
 303     return d_logic.isTheoryEnabled(theory::THEORY_FP);
 304   default:
 305     std::stringstream ss;
 306     ss << "internal error: unsupported theory " << theory;
 307     throw ParserException(ss.str());
 308   }
 309 }
 310
 311 bool Smt2::logicIsSet() {
 312   return d_logicSet;
 313 }
 314
 315 void Smt2::reset() {
 316   d_logicSet = false;
 317   d_logic = LogicInfo();
 318   operatorKindMap.clear();
 319   d_lastNamedTerm = std::pair<Expr, std::string>();
 320   d_unsatCoreNames = std::stack< std::map<Expr, std::string> >();
 321   this->Parser::reset();
 322
 323   d_unsatCoreNames.push(std::map<Expr, std::string>());
 324   if( !strictModeEnabled() ) {
 325     addTheory(Smt2::THEORY_CORE);
 326   }
 327 }
 328
 329 void Smt2::resetAssertions() {
 330   this->Parser::reset();
 331 }
 332
 333 void Smt2::setLogic(std::string name) {
 334   if(sygus()) {
 335     if(name == "Arrays") {
 336       name = "AUF";
 337     } else if(name == "Reals") {
 338       name = "UFLRA";
 339     } else if(name == "LIA") {
 340       name = "UFLIA";
 341     } else if(name == "LRA") {
 342       name = "UFLRA";
 343     } else if(name == "LIRA") {
 344       name = "UFLIRA";
 345     } else if(name == "BV") {
 346       name = "UFBV";
 347     } else if(name == "ALL_SUPPORTED") {
 348       //no change
 349     } else {
 350       std::stringstream ss;
 351       ss << "Unknown SyGuS background logic `" << name << "'";
 352       parseError(ss.str());
 353     }
 354   }
 355
 356   d_logicSet = true;
 357   if(logicIsForced()) {
 358     d_logic = getForcedLogic();
 359   } else {
 360     d_logic = name;
 361   }
 362
 363   // Core theory belongs to every logic
 364   addTheory(THEORY_CORE);
 365
 366   if(d_logic.isTheoryEnabled(theory::THEORY_UF)) {
 367     addTheory(THEORY_UF);
 368   }
 369
 370   if(d_logic.isTheoryEnabled(theory::THEORY_ARITH)) {
 371     if(d_logic.areIntegersUsed()) {
 372       if(d_logic.areRealsUsed()) {
 373         addTheory(THEORY_REALS_INTS);
 374       } else {
 375         addTheory(THEORY_INTS);
 376       }
 377     } else if(d_logic.areRealsUsed()) {
 378       addTheory(THEORY_REALS);
 379     }
 380   }
 381
 382   if(d_logic.isTheoryEnabled(theory::THEORY_ARRAY)) {
 383     addTheory(THEORY_ARRAYS);
 384   }
 385
 386   if(d_logic.isTheoryEnabled(theory::THEORY_BV)) {
 387     addTheory(THEORY_BITVECTORS);
 388   }
 389
 390   if(d_logic.isTheoryEnabled(theory::THEORY_DATATYPES)) {
 391     addTheory(THEORY_DATATYPES);
 392   }
 393
 394   if(d_logic.isTheoryEnabled(theory::THEORY_SETS)) {
 395     addTheory(THEORY_SETS);
 396   }
 397
 398   if(d_logic.isTheoryEnabled(theory::THEORY_STRINGS)) {
 399     addTheory(THEORY_STRINGS);
 400   }
 401
 402   if(d_logic.isQuantified()) {
 403     addTheory(THEORY_QUANTIFIERS);
 404   }
 405
 406   if (d_logic.isTheoryEnabled(theory::THEORY_FP)) {
 407     addTheory(THEORY_FP);
 408   }
 409
 410 }/* Smt2::setLogic() */
 411
 412 void Smt2::setInfo(const std::string& flag, const SExpr& sexpr) {
 413   // TODO: ???
 414 }
 415
 416 void Smt2::setOption(const std::string& flag, const SExpr& sexpr) {
 417   // TODO: ???
 418 }
 419
 420 void Smt2::checkThatLogicIsSet() {
 421   if( ! logicIsSet() ) {
 422     if(strictModeEnabled()) {
 423       parseError("set-logic must appear before this point.");
 424     } else {
 425       if(sygus()) {
 426         setLogic("LIA");
 427       } else {
 428         warning("No set-logic command was given before this point.");
 429         warning("CVC4 will assume the non-standard ALL_SUPPORTED logic.");
 430         warning("Consider setting a stricter logic for (likely) better performance.");
 431         warning("To suppress this warning in the future use (set-logic ALL_SUPPORTED).");
 432
 433         setLogic("ALL_SUPPORTED");
 434       }
 435
 436       Command* c = new SetBenchmarkLogicCommand("ALL_SUPPORTED");
 437       c->setMuted(true);
 438       preemptCommand(c);
 439     }
 440   }
 441 }
 442
 443 /* The include are managed in the lexer but called in the parser */
 444 // Inspired by http://www.antlr3.org/api/C/interop.html
 445
 446 static bool newInputStream(const std::string& filename, pANTLR3_LEXER lexer) {
 447   Debug("parser") << "Including " << filename << std::endl;
 448   // Create a new input stream and take advantage of built in stream stacking
 449   // in C target runtime.
 450   //
 451   pANTLR3_INPUT_STREAM    in;
 452 #ifdef CVC4_ANTLR3_OLD_INPUT_STREAM
 453   in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) filename.c_str());
 454 #else /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 455   in = antlr3FileStreamNew((pANTLR3_UINT8) filename.c_str(), ANTLR3_ENC_8BIT);
 456 #endif /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 457   if( in == NULL ) {
 458     Debug("parser") << "Can't open " << filename << std::endl;
 459     return false;
 460   }
 461   // Same thing as the predefined PUSHSTREAM(in);
 462   lexer->pushCharStream(lexer, in);
 463   // restart it
 464   //lexer->rec->state->tokenStartCharIndex      = -10;
 465   //lexer->emit(lexer);
 466
 467   // Note that the input stream is not closed when it EOFs, I don't bother
 468   // to do it here, but it is up to you to track streams created like this
 469   // and destroy them when the whole parse session is complete. Remember that you
 470   // don't want to do this until all tokens have been manipulated all the way through
 471   // your tree parsers etc as the token does not store the text it just refers
 472   // back to the input stream and trying to get the text for it will abort if you
 473   // close the input stream too early.
 474
 475   //TODO what said before
 476   return true;
 477 }
 478
 479 void Smt2::includeFile(const std::string& filename) {
 480   // security for online version
 481   if(!canIncludeFile()) {
 482     parseError("include-file feature was disabled for this run.");
 483   }
 484
 485   // Get the lexer
 486   AntlrInput* ai = static_cast<AntlrInput*>(getInput());
 487   pANTLR3_LEXER lexer = ai->getAntlr3Lexer();
 488   // get the name of the current stream "Does it work inside an include?"
 489   const std::string inputName = ai->getInputStreamName();
 490
 491   // Find the directory of the current input file
 492   std::string path;
 493   size_t pos = inputName.rfind('/');
 494   if(pos != std::string::npos) {
 495     path = std::string(inputName, 0, pos + 1);
 496   }
 497   path.append(filename);
 498   if(!newInputStream(path, lexer)) {
 499     parseError("Couldn't open include file `" + path + "'");
 500   }
 501 }
 502
 503 Expr Smt2::mkSygusVar(const std::string& name, const Type& type, bool isPrimed) {
 504   Expr e = mkBoundVar(name, type);
 505   d_sygusVars.push_back(e);
 506   d_sygusVarPrimed[e] = false;
 507   if( isPrimed ){
 508     std::stringstream ss;
 509     ss << name << "'";
 510     Expr ep = mkBoundVar(ss.str(), type);
 511     d_sygusVars.push_back(ep);
 512     d_sygusVarPrimed[ep] = true;
 513   }
 514   return e;
 515 }
 516
 517 void collectSygusGrammarTypesFor( Type range, std::vector< Type >& types, std::map< Type, std::vector< DatatypeConstructorArg > >& sels ){
 518   if( !range.isBoolean() ){
 519     if( std::find( types.begin(), types.end(), range )==types.end() ){
 520       Debug("parser-sygus") << "...will make grammar for " << range << std::endl;
 521       types.push_back( range );
 522       if( range.isDatatype() ){
 523         const Datatype& dt = ((DatatypeType)range).getDatatype();
 524         for( unsigned i=0; i<dt.getNumConstructors(); i++ ){
 525           for( unsigned j=0; j<dt[i].getNumArgs(); j++ ){
 526             Type crange = ((SelectorType)dt[i][j].getType()).getRangeType();
 527             sels[crange].push_back( dt[i][j] );
 528             collectSygusGrammarTypesFor( crange, types, sels );
 529           }
 530         }
 531       }
 532     }
 533   }
 534 }
 535
 536 void Smt2::mkSygusDefaultGrammar( const Type& range, Expr& bvl, const std::string& fun, std::vector<CVC4::Datatype>& datatypes,
 537                                   std::vector<Type>& sorts, std::vector< std::vector<Expr> >& ops, std::vector<Expr> sygus_vars, int& startIndex ) {
 538
 539   //if( !range.isBoolean() && !range.isInteger() && !range.isBitVector() && !range.isDatatype() ){
 540   //  parseError("No default grammar for type.");
 541   //}
 542   startIndex = -1;
 543   Debug("parser-sygus") << "Construct default grammar for " << fun << " " << range << std::endl;
 544   std::map< CVC4::Type, CVC4::Type > sygus_to_builtin;
 545
 546   std::vector< Type > types;
 547   std::map< Type, std::vector< DatatypeConstructorArg > > sels;
 548   //types for each of the variables
 549   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 550     collectSygusGrammarTypesFor( sygus_vars[i].getType(), types, sels );
 551   }
 552   //types connected to range
 553   collectSygusGrammarTypesFor( range, types, sels );
 554
 555   //name of boolean sort
 556   std::stringstream ssb;
 557   ssb << fun << "_Bool";
 558   std::string dbname = ssb.str();
 559   Type unres_bt = mkUnresolvedType(ssb.str());
 560
 561   std::vector< Type > unres_types;
 562   std::map< Type, Type > type_to_unres;
 563   for( unsigned i=0; i<types.size(); i++ ){
 564     std::stringstream ss;
 565     ss << fun << "_" << types[i];
 566     std::string dname = ss.str();
 567     datatypes.push_back(Datatype(dname));
 568     ops.push_back(std::vector<Expr>());
 569     //make unresolved type
 570     Type unres_t = mkUnresolvedType(dname);
 571     unres_types.push_back(unres_t);
 572     type_to_unres[types[i]] = unres_t;
 573     sygus_to_builtin[unres_t] = types[i];
 574   }
 575   for( unsigned i=0; i<types.size(); i++ ){
 576     Debug("parser-sygus") << "Make grammar for " << types[i] << " " << unres_types[i] << std::endl;
 577     std::vector<std::string> cnames;
 578     std::vector<std::vector<CVC4::Type> > cargs;
 579     std::vector<std::string> unresolved_gterm_sym;
 580     Type unres_t = unres_types[i];
 581     //add variables
 582     for( unsigned j=0; j<sygus_vars.size(); j++ ){
 583       if( sygus_vars[j].getType()==types[i] ){
 584         std::stringstream ss;
 585         ss << sygus_vars[j];
 586         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 587         ops[i].push_back( sygus_vars[j] );
 588         cnames.push_back( ss.str() );
 589         cargs.push_back( std::vector< CVC4::Type >() );
 590       }
 591     }
 592     //add constants
 593     std::vector< Expr > consts;
 594     mkSygusConstantsForType( types[i], consts );
 595     for( unsigned j=0; j<consts.size(); j++ ){
 596       std::stringstream ss;
 597       ss << consts[j];
 598       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 599       ops[i].push_back( consts[j] );
 600       cnames.push_back( ss.str() );
 601       cargs.push_back( std::vector< CVC4::Type >() );
 602     }
 603     //ITE
 604     CVC4::Kind k = kind::ITE;
 605     Debug("parser-sygus") << "...add for " << k << std::endl;
 606     ops[i].push_back(getExprManager()->operatorOf(k));
 607     cnames.push_back( kind::kindToString(k) );
 608     cargs.push_back( std::vector< CVC4::Type >() );
 609     cargs.back().push_back(unres_bt);
 610     cargs.back().push_back(unres_t);
 611     cargs.back().push_back(unres_t);
 612
 613     if( types[i].isInteger() ){
 614       for( unsigned j=0; j<2; j++ ){
 615         CVC4::Kind k = j==0 ? kind::PLUS : kind::MINUS;
 616         Debug("parser-sygus") << "...add for " << k << std::endl;
 617         ops[i].push_back(getExprManager()->operatorOf(k));
 618         cnames.push_back(kind::kindToString(k));
 619         cargs.push_back( std::vector< CVC4::Type >() );
 620         cargs.back().push_back(unres_t);
 621         cargs.back().push_back(unres_t);
 622       }
 623     }else if( types[i].isDatatype() ){
 624       Debug("parser-sygus") << "...add for constructors" << std::endl;
 625       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 626       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 627         Debug("parser-sygus") << "...for " << dt[k].getName() << std::endl;
 628         ops[i].push_back( dt[k].getConstructor() );
 629         cnames.push_back( dt[k].getName() );
 630         cargs.push_back( std::vector< CVC4::Type >() );
 631         for( unsigned j=0; j<dt[k].getNumArgs(); j++ ){
 632           Type crange = ((SelectorType)dt[k][j].getType()).getRangeType();
 633           //Assert( type_to_unres.find(crange)!=type_to_unres.end() );
 634           cargs.back().push_back( type_to_unres[crange] );
 635         }
 636       }
 637     }else{
 638       std::stringstream sserr;
 639       sserr << "No implementation for default Sygus grammar of type " << types[i] << std::endl;
 640       warning(sserr.str());
 641     }
 642     //add for all selectors to this type
 643     if( !sels[types[i]].empty() ){
 644       Debug("parser-sygus") << "...add for selectors" << std::endl;
 645       for( unsigned j=0; j<sels[types[i]].size(); j++ ){
 646         Debug("parser-sygus") << "...for " << sels[types[i]][j].getName() << std::endl;
 647         Type arg_type = ((SelectorType)sels[types[i]][j].getType()).getDomain();
 648         ops[i].push_back( sels[types[i]][j].getSelector() );
 649         cnames.push_back( sels[types[i]][j].getName() );
 650         cargs.push_back( std::vector< CVC4::Type >() );
 651         //Assert( type_to_unres.find(arg_type)!=type_to_unres.end() );
 652         cargs.back().push_back( type_to_unres[arg_type] );
 653       }
 654     }
 655     Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 656     datatypes[i].setSygus( types[i], bvl, true, true );
 657     mkSygusDatatype( datatypes[i], ops[i], cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 658     sorts.push_back( types[i] );
 659     //set start index if applicable
 660     if( types[i]==range ){
 661       startIndex = i;
 662     }
 663   }
 664
 665   //make Boolean type
 666   Type btype = getExprManager()->booleanType();
 667   datatypes.push_back(Datatype(dbname));
 668   ops.push_back(std::vector<Expr>());
 669   std::vector<std::string> cnames;
 670   std::vector<std::vector<CVC4::Type> > cargs;
 671   std::vector<std::string> unresolved_gterm_sym;
 672   Debug("parser-sygus") << "Make grammar for " << btype << " " << datatypes.back() << std::endl;
 673   //add variables
 674   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 675     if( sygus_vars[i].getType().isBoolean() ){
 676       std::stringstream ss;
 677       ss << sygus_vars[i];
 678       Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 679       ops.back().push_back( sygus_vars[i] );
 680       cnames.push_back( ss.str() );
 681       cargs.push_back( std::vector< CVC4::Type >() );
 682     }
 683   }
 684   //add constants if no variables and no connected types
 685   if( ops.back().empty() && types.empty() ){
 686     std::vector< Expr > consts;
 687     mkSygusConstantsForType( btype, consts );
 688     for( unsigned j=0; j<consts.size(); j++ ){
 689       std::stringstream ss;
 690       ss << consts[j];
 691       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 692       ops.back().push_back( consts[j] );
 693       cnames.push_back( ss.str() );
 694       cargs.push_back( std::vector< CVC4::Type >() );
 695     }
 696   }
 697   //add operators
 698   for( unsigned i=0; i<3; i++ ){
 699     CVC4::Kind k = i==0 ? kind::NOT : ( i==1 ? kind::AND : kind::OR );
 700     Debug("parser-sygus") << "...add for " << k << std::endl;
 701     ops.back().push_back(getExprManager()->operatorOf(k));
 702     cnames.push_back(kind::kindToString(k));
 703     cargs.push_back( std::vector< CVC4::Type >() );
 704     if( k==kind::NOT ){
 705       cargs.back().push_back(unres_bt);
 706     }else if( k==kind::AND || k==kind::OR ){
 707       cargs.back().push_back(unres_bt);
 708       cargs.back().push_back(unres_bt);
 709     }
 710   }
 711   //add predicates for types
 712   for( unsigned i=0; i<types.size(); i++ ){
 713     Debug("parser-sygus") << "...add predicates for " << types[i] << std::endl;
 714     //add equality per type
 715     CVC4::Kind k = kind::EQUAL;
 716     Debug("parser-sygus") << "...add for " << k << std::endl;
 717     ops.back().push_back(getExprManager()->operatorOf(k));
 718     std::stringstream ss;
 719     ss << kind::kindToString(k) << "_" << types[i];
 720     cnames.push_back(ss.str());
 721     cargs.push_back( std::vector< CVC4::Type >() );
 722     cargs.back().push_back(unres_types[i]);
 723     cargs.back().push_back(unres_types[i]);
 724     //type specific predicates
 725     if( types[i].isInteger() ){
 726       CVC4::Kind k = kind::LEQ;
 727       Debug("parser-sygus") << "...add for " << k << std::endl;
 728       ops.back().push_back(getExprManager()->operatorOf(k));
 729       cnames.push_back(kind::kindToString(k));
 730       cargs.push_back( std::vector< CVC4::Type >() );
 731       cargs.back().push_back(unres_types[i]);
 732       cargs.back().push_back(unres_types[i]);
 733     }else if( types[i].isDatatype() ){
 734       //add for testers
 735       Debug("parser-sygus") << "...add for testers" << std::endl;
 736       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 737       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 738         Debug("parser-sygus") << "...for " << dt[k].getTesterName() << std::endl;
 739         ops.back().push_back(dt[k].getTester());
 740         cnames.push_back(dt[k].getTesterName());
 741         cargs.push_back( std::vector< CVC4::Type >() );
 742         cargs.back().push_back(unres_types[i]);
 743       }
 744     }
 745   }
 746   if( range==btype ){
 747     startIndex = sorts.size();
 748   }
 749   Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 750   datatypes.back().setSygus( btype, bvl, true, true );
 751   mkSygusDatatype( datatypes.back(), ops.back(), cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 752   sorts.push_back( btype );
 753
 754   Debug("parser-sygus") << "...finished make default grammar for " << fun << " " << range << std::endl;
 755 }
 756
 757 void Smt2::mkSygusConstantsForType( const Type& type, std::vector<CVC4::Expr>& ops ) {
 758   if( type.isInteger() ){
 759     ops.push_back(getExprManager()->mkConst(Rational(0)));
 760     ops.push_back(getExprManager()->mkConst(Rational(1)));
 761   }else if( type.isBitVector() ){
 762     unsigned sz = ((BitVectorType)type).getSize();
 763     BitVector bval0(sz, (unsigned int)0);
 764     ops.push_back( getExprManager()->mkConst(bval0) );
 765     BitVector bval1(sz, (unsigned int)1);
 766     ops.push_back( getExprManager()->mkConst(bval1) );
 767   }else if( type.isBoolean() ){
 768     ops.push_back(getExprManager()->mkConst(true));
 769     ops.push_back(getExprManager()->mkConst(false));
 770   }
 771   //TODO : others?
 772 }
 773
 774 //  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)
 775 //  This method may also add new elements pairwise into datatypes/sorts/ops/cnames/cargs in the case of non-flat gterms.
 776 void Smt2::processSygusGTerm( CVC4::SygusGTerm& sgt, int index,
 777                               std::vector< CVC4::Datatype >& datatypes,
 778                               std::vector< CVC4::Type>& sorts,
 779                               std::vector< std::vector<CVC4::Expr> >& ops,
 780                               std::vector< std::vector<std::string> >& cnames,
 781                               std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 782                               std::vector< bool >& allow_const,
 783                               std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 784                               std::vector<CVC4::Expr>& sygus_vars,
 785                               std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin, std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr,
 786                               CVC4::Type& ret, bool isNested ){
 787   if( sgt.d_gterm_type==SygusGTerm::gterm_op || sgt.d_gterm_type==SygusGTerm::gterm_let ){
 788     Debug("parser-sygus") << "Add " << sgt.d_expr << " to datatype " << index << std::endl;
 789     Kind oldKind;
 790     Kind newKind = kind::UNDEFINED_KIND;
 791     //convert to UMINUS if one child of MINUS
 792     if( sgt.d_children.size()==1 && sgt.d_expr==getExprManager()->operatorOf(kind::MINUS) ){
 793       oldKind = kind::MINUS;
 794       newKind = kind::UMINUS;
 795     }
 796     //convert to IFF if boolean EQUAL
 797     if( sgt.d_expr==getExprManager()->operatorOf(kind::EQUAL) ){
 798       Type ctn = sgt.d_children[0].d_type;
 799       std::map< CVC4::Type, CVC4::Type >::iterator it = sygus_to_builtin.find( ctn );
 800       if( it != sygus_to_builtin.end() && it->second.isBoolean() ){
 801         oldKind = kind::EQUAL;
 802         newKind = kind::IFF;
 803       }
 804     }
 805     if( newKind!=kind::UNDEFINED_KIND ){
 806       Expr newExpr = getExprManager()->operatorOf(newKind);
 807       Debug("parser-sygus") << "Replace " << sgt.d_expr << " with " << newExpr << std::endl;
 808       sgt.d_expr = newExpr;
 809       std::string oldName = kind::kindToString(oldKind);
 810       std::string newName = kind::kindToString(newKind);
 811       size_t pos = 0;
 812       if((pos = sgt.d_name.find(oldName, pos)) != std::string::npos){
 813         sgt.d_name.replace(pos, oldName.length(), newName);
 814       }
 815     }
 816     ops[index].push_back( sgt.d_expr );
 817     cnames[index].push_back( sgt.d_name );
 818     cargs[index].push_back( std::vector< CVC4::Type >() );
 819     for( unsigned i=0; i<sgt.d_children.size(); i++ ){
 820       std::stringstream ss;
 821       ss << datatypes[index].getName() << "_" << ops[index].size() << "_arg_" << i;
 822       std::string sub_dname = ss.str();
 823       //add datatype for child
 824       Type null_type;
 825       pushSygusDatatypeDef( null_type, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
 826       int sub_dt_index = datatypes.size()-1;
 827       //process child
 828       Type sub_ret;
 829       processSygusGTerm( sgt.d_children[i], sub_dt_index, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 830                          sygus_vars, sygus_to_builtin, sygus_to_builtin_expr, sub_ret, true );
 831       //process the nested gterm (either pop the last datatype, or flatten the argument)
 832       Type tt = processSygusNestedGTerm( sub_dt_index, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 833                                          sygus_to_builtin, sygus_to_builtin_expr, sub_ret );
 834       cargs[index].back().push_back(tt);
 835     }
 836     //if let, must create operator
 837     if( sgt.d_gterm_type==SygusGTerm::gterm_let ){
 838       processSygusLetConstructor( sgt.d_let_vars, index, datatypes, sorts, ops, cnames, cargs,
 839                                   sygus_vars, sygus_to_builtin, sygus_to_builtin_expr );
 840     }
 841   }else if( sgt.d_gterm_type==SygusGTerm::gterm_constant ){
 842     if( sgt.getNumChildren()!=0 ){
 843       parseError("Bad syntax for Sygus Constant.");
 844     }
 845     std::vector< Expr > consts;
 846     mkSygusConstantsForType( sgt.d_type, consts );
 847     Debug("parser-sygus") << "...made " << consts.size() << " constants." << std::endl;
 848     for( unsigned i=0; i<consts.size(); i++ ){
 849       std::stringstream ss;
 850       ss << consts[i];
 851       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 852       ops[index].push_back( consts[i] );
 853       cnames[index].push_back( ss.str() );
 854       cargs[index].push_back( std::vector< CVC4::Type >() );
 855     }
 856     allow_const[index] = true;
 857   }else if( sgt.d_gterm_type==SygusGTerm::gterm_variable || sgt.d_gterm_type==SygusGTerm::gterm_input_variable ){
 858     if( sgt.getNumChildren()!=0 ){
 859       parseError("Bad syntax for Sygus Variable.");
 860     }
 861     Debug("parser-sygus") << "...process " << sygus_vars.size() << " variables." << std::endl;
 862     for( unsigned i=0; i<sygus_vars.size(); i++ ){
 863       if( sygus_vars[i].getType()==sgt.d_type ){
 864         std::stringstream ss;
 865         ss << sygus_vars[i];
 866         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 867         ops[index].push_back( sygus_vars[i] );
 868         cnames[index].push_back( ss.str() );
 869         cargs[index].push_back( std::vector< CVC4::Type >() );
 870       }
 871     }
 872   }else if( sgt.d_gterm_type==SygusGTerm::gterm_nested_sort ){
 873     ret = sgt.d_type;
 874   }else if( sgt.d_gterm_type==SygusGTerm::gterm_unresolved ){
 875     if( isNested ){
 876       if( isUnresolvedType(sgt.d_name) ){
 877         ret = getSort(sgt.d_name);
 878       }else{
 879         //nested, unresolved symbol...fail
 880         std::stringstream ss;
 881         ss << "Cannot handle nested unresolved symbol " << sgt.d_name << std::endl;
 882         parseError(ss.str());
 883       }
 884     }else{
 885       //will resolve when adding constructors
 886       unresolved_gterm_sym[index].push_back(sgt.d_name);
 887     }
 888   }else if( sgt.d_gterm_type==SygusGTerm::gterm_ignore ){
 889
 890   }
 891 }
 892
 893 bool Smt2::pushSygusDatatypeDef( Type t, std::string& dname,
 894                                   std::vector< CVC4::Datatype >& datatypes,
 895                                   std::vector< CVC4::Type>& sorts,
 896                                   std::vector< std::vector<CVC4::Expr> >& ops,
 897                                   std::vector< std::vector<std::string> >& cnames,
 898                                   std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 899                                   std::vector< bool >& allow_const,
 900                                   std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 901   sorts.push_back(t);
 902   datatypes.push_back(Datatype(dname));
 903   ops.push_back(std::vector<Expr>());
 904   cnames.push_back(std::vector<std::string>());
 905   cargs.push_back(std::vector<std::vector<CVC4::Type> >());
 906   allow_const.push_back(false);
 907   unresolved_gterm_sym.push_back(std::vector< std::string >());
 908   return true;
 909 }
 910
 911 bool Smt2::popSygusDatatypeDef( std::vector< CVC4::Datatype >& datatypes,
 912                                  std::vector< CVC4::Type>& sorts,
 913                                  std::vector< std::vector<CVC4::Expr> >& ops,
 914                                  std::vector< std::vector<std::string> >& cnames,
 915                                  std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 916                                  std::vector< bool >& allow_const,
 917                                  std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 918   sorts.pop_back();
 919   datatypes.pop_back();
 920   ops.pop_back();
 921   cnames.pop_back();
 922   cargs.pop_back();
 923   allow_const.pop_back();
 924   unresolved_gterm_sym.pop_back();
 925   return true;
 926 }
 927
 928 Type Smt2::processSygusNestedGTerm( int sub_dt_index, std::string& sub_dname, std::vector< CVC4::Datatype >& datatypes,
 929                                     std::vector< CVC4::Type>& sorts,
 930                                     std::vector< std::vector<CVC4::Expr> >& ops,
 931                                     std::vector< std::vector<std::string> >& cnames,
 932                                     std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 933                                     std::vector< bool >& allow_const,
 934                                     std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 935                                     std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
 936                                     std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr, Type sub_ret ) {
 937   Type t = sub_ret;
 938   Debug("parser-sygus") << "Argument is ";
 939   if( t.isNull() ){
 940     //then, it is the datatype we constructed, which should have a single constructor
 941     t = mkUnresolvedType(sub_dname);
 942     Debug("parser-sygus") << "inline flattening of (auxiliary, local) datatype " << t << std::endl;
 943     Debug("parser-sygus") << ": to compute type, construct ground term witnessing the grammar, #cons=" << cargs[sub_dt_index].size() << std::endl;
 944     if( cargs[sub_dt_index].empty() ){
 945       parseError(std::string("Internal error : datatype for nested gterm does not have a constructor."));
 946     }
 947     Expr sop = ops[sub_dt_index][0];
 948     Type curr_t;
 949     if( sop.getKind() != kind::BUILTIN && ( sop.isConst() || cargs[sub_dt_index][0].empty() ) ){
 950       curr_t = sop.getType();
 951       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;
 952       sygus_to_builtin_expr[t] = sop;
 953       //store that term sop has dedicated sygus type t
 954       if( d_sygus_bound_var_type.find( sop )==d_sygus_bound_var_type.end() ){
 955         d_sygus_bound_var_type[sop] = t;
 956       }
 957     }else{
 958       std::vector< Expr > children;
 959       if( sop.getKind() != kind::BUILTIN ){
 960         children.push_back( sop );
 961       }
 962       for( unsigned i=0; i<cargs[sub_dt_index][0].size(); i++ ){
 963         std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[sub_dt_index][0][i] );
 964         if( it==sygus_to_builtin_expr.end() ){
 965           if( sygus_to_builtin.find( cargs[sub_dt_index][0][i] )==sygus_to_builtin.end() ){
 966             std::stringstream ss;
 967             ss << "Missing builtin type for type " << cargs[sub_dt_index][0][i] << "!" << std::endl;
 968             ss << "Builtin types are currently : " << std::endl;
 969             for( std::map< CVC4::Type, CVC4::Type >::iterator itb = sygus_to_builtin.begin(); itb != sygus_to_builtin.end(); ++itb ){
 970               ss << "  " << itb->first << " -> " << itb->second << std::endl;
 971             }
 972             parseError(ss.str());
 973           }
 974           Type bt = sygus_to_builtin[cargs[sub_dt_index][0][i]];
 975           Debug("parser-sygus") << ":  child " << i << " introduce type elem for " << cargs[sub_dt_index][0][i] << " " << bt << std::endl;
 976           std::stringstream ss;
 977           ss << t << "_x_" << i;
 978           Expr bv = mkBoundVar(ss.str(), bt);
 979           children.push_back( bv );
 980           d_sygus_bound_var_type[bv] = cargs[sub_dt_index][0][i];
 981         }else{
 982           Debug("parser-sygus") << ":  child " << i << " existing sygus to builtin expr : " << it->second << std::endl;
 983           children.push_back( it->second );
 984         }
 985       }
 986       Kind sk = sop.getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(sop);
 987       Debug("parser-sygus") << ": operator " << sop << " with " << sop.getKind() << " " << sk << std::endl;
 988       Expr e = getExprManager()->mkExpr( sk, children );
 989       Debug("parser-sygus") << ": constructed " << e << ", which has type " << e.getType() << std::endl;
 990       curr_t = e.getType();
 991       sygus_to_builtin_expr[t] = e;
 992     }
 993     sorts[sub_dt_index] = curr_t;
 994     sygus_to_builtin[t] = curr_t;
 995   }else{
 996     Debug("parser-sygus") << "simple argument " << t << std::endl;
 997     Debug("parser-sygus") << "...removing " << datatypes.back().getName() << std::endl;
 998     //otherwise, datatype was unecessary
 999     //pop argument datatype definition
1000     popSygusDatatypeDef( datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
1001   }
1002   return t;
1003 }
1004
1005 void Smt2::processSygusLetConstructor( std::vector< CVC4::Expr >& let_vars,
1006                                        int index,
1007                                        std::vector< CVC4::Datatype >& datatypes,
1008                                        std::vector< CVC4::Type>& sorts,
1009                                        std::vector< std::vector<CVC4::Expr> >& ops,
1010                                        std::vector< std::vector<std::string> >& cnames,
1011                                        std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
1012                                        std::vector<CVC4::Expr>& sygus_vars,
1013                                        std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
1014                                        std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr ) {
1015   std::vector< CVC4::Expr > let_define_args;
1016   Expr let_body;
1017   int dindex = cargs[index].size()-1;
1018   Debug("parser-sygus") << "Process let constructor for datatype " << datatypes[index].getName() << ", #subtypes = " << cargs[index][dindex].size() << std::endl;
1019   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1020     Debug("parser-sygus") << "  " << i << " : " << cargs[index][dindex][i] << std::endl;
1021     if( i+1==cargs[index][dindex].size() ){
1022       std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[index][dindex][i] );
1023       if( it!=sygus_to_builtin_expr.end() ){
1024         let_body = it->second;
1025       }else{
1026         std::stringstream ss;
1027         ss << datatypes[index].getName() << "_body";
1028         let_body = mkBoundVar(ss.str(), sygus_to_builtin[cargs[index][dindex][i]]);
1029         d_sygus_bound_var_type[let_body] = cargs[index][dindex][i];
1030       }
1031     }
1032   }
1033   Debug("parser-sygus") << std::endl;
1034   Debug("parser-sygus") << "Body is " << let_body << std::endl;
1035   Debug("parser-sygus") << "# let vars = " << let_vars.size() << std::endl;
1036   for( unsigned i=0; i<let_vars.size(); i++ ){
1037     Debug("parser-sygus") << "  let var " << i << " : " << let_vars[i] << " " << let_vars[i].getType() << std::endl;
1038     let_define_args.push_back( let_vars[i] );
1039   }
1040   /*
1041   Debug("parser-sygus") << "index = " << index << ", start index = " << start_index << ", #Current datatypes = " << datatypes.size() << std::endl;
1042   for( unsigned i=start_index; i<datatypes.size(); i++ ){
1043     Debug("parser-sygus") << "  datatype " << i << " : " << datatypes[i].getName() << ", #cons = " << cargs[i].size() << std::endl;
1044     if( !cargs[i].empty() ){
1045       Debug("parser-sygus") << "  operator 0 is " << ops[i][0] << std::endl;
1046       Debug("parser-sygus") << "  cons 0 has " << cargs[i][0].size() << " sub fields." << std::endl;
1047       for( unsigned j=0; j<cargs[i][0].size(); j++ ){
1048         Type bt = sygus_to_builtin[cargs[i][0][j]];
1049         Debug("parser-sygus") << "    cons 0, selector " << j << " : " << cargs[i][0][j] << " " << bt << std::endl;
1050       }
1051     }
1052   }
1053   */
1054   //last argument is the return, pop
1055   cargs[index][dindex].pop_back();
1056   collectSygusLetArgs( let_body, cargs[index][dindex], let_define_args );
1057
1058   Debug("parser-sygus") << "Make define-fun with " << cargs[index][dindex].size() << " arguments..." << std::endl;
1059   std::vector<CVC4::Type> fsorts;
1060   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1061     Debug("parser-sygus") << "  " << i << " : " << let_define_args[i] << " " << let_define_args[i].getType() << " " << cargs[index][dindex][i] << std::endl;
1062     fsorts.push_back(let_define_args[i].getType());
1063   }
1064
1065   Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1066   std::stringstream ss;
1067   ss << datatypes[index].getName() << "_let";
1068   Expr let_func = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1069   d_sygus_defined_funs.push_back( let_func );
1070   preemptCommand( new DefineFunctionCommand(ss.str(), let_func, let_define_args, let_body) );
1071
1072   ops[index].pop_back();
1073   ops[index].push_back( let_func );
1074   cnames[index].pop_back();
1075   cnames[index].push_back(ss.str());
1076
1077   //mark function as let constructor
1078   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() );
1079   d_sygus_let_func_to_body[let_func] = let_body;
1080   d_sygus_let_func_to_num_input_vars[let_func] = let_vars.size();
1081 }
1082
1083
1084 void Smt2::collectSygusLetArgs( CVC4::Expr e, std::vector< CVC4::Type >& sygusArgs, std::vector< CVC4::Expr >& builtinArgs ) {
1085   if( e.getKind()==kind::BOUND_VARIABLE ){
1086     if( std::find( builtinArgs.begin(), builtinArgs.end(), e )==builtinArgs.end() ){
1087       builtinArgs.push_back( e );
1088       sygusArgs.push_back( d_sygus_bound_var_type[e] );
1089       if( d_sygus_bound_var_type[e].isNull() ){
1090         std::stringstream ss;
1091         ss << "While constructing body of let gterm, can't map " << e << " to sygus type." << std::endl;
1092         parseError(ss.str());
1093       }
1094     }
1095   }else{
1096     for( unsigned i=0; i<e.getNumChildren(); i++ ){
1097       collectSygusLetArgs( e[i], sygusArgs, builtinArgs );
1098     }
1099   }
1100 }
1101
1102 void Smt2::setSygusStartIndex( std::string& fun, int startIndex,
1103                                std::vector< CVC4::Datatype >& datatypes,
1104                                std::vector< CVC4::Type>& sorts,
1105                                std::vector< std::vector<CVC4::Expr> >& ops ) {
1106   if( startIndex>0 ){
1107     CVC4::Datatype tmp_dt = datatypes[0];
1108     Type tmp_sort = sorts[0];
1109     std::vector< Expr > tmp_ops;
1110     tmp_ops.insert( tmp_ops.end(), ops[0].begin(), ops[0].end() );
1111     datatypes[0] = datatypes[startIndex];
1112     sorts[0] = sorts[startIndex];
1113     ops[0].clear();
1114     ops[0].insert( ops[0].end(), ops[startIndex].begin(), ops[startIndex].end() );
1115     datatypes[startIndex] = tmp_dt;
1116     sorts[startIndex] = tmp_sort;
1117     ops[startIndex].clear();
1118     ops[startIndex].insert( ops[startIndex].begin(), tmp_ops.begin(), tmp_ops.end() );
1119   }else if( startIndex<0 ){
1120     std::stringstream ss;
1121     ss << "warning: no symbol named Start for synth-fun " << fun << std::endl;
1122     warning(ss.str());
1123   }
1124 }
1125
1126 void Smt2::defineSygusFuns() {
1127   // only define each one once
1128   while(d_nextSygusFun < d_sygusFuns.size()) {
1129     std::pair<std::string, Expr> p = d_sygusFuns[d_nextSygusFun];
1130     std::string fun = p.first;
1131     Debug("parser-sygus") << "Sygus : define fun " << fun << std::endl;
1132     Expr eval = p.second;
1133     FunctionType evalType = eval.getType();
1134     std::vector<Type> argTypes = evalType.getArgTypes();
1135     Type rangeType = evalType.getRangeType();
1136     Debug("parser-sygus") << "...eval type : " << evalType << ", #args=" << argTypes.size() << std::endl;
1137
1138     // first make the function type
1139     std::vector<Expr> sygusVars;
1140     std::vector<Type> funType;
1141     for(size_t j = 1; j < argTypes.size(); ++j) {
1142       funType.push_back(argTypes[j]);
1143       std::stringstream ss;
1144       ss << fun << "_v_" << j;
1145       sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), argTypes[j]));
1146     }
1147     Type funt;
1148     if( !funType.empty() ){
1149       funt = getExprManager()->mkFunctionType(funType, rangeType);
1150       Debug("parser-sygus") << "...eval function type : " << funt << std::endl;
1151
1152       // copy the bound vars
1153       /*
1154       std::vector<Expr> sygusVars;
1155       //std::vector<Type> types;
1156       for(size_t i = 0; i < d_sygusVars.size(); ++i) {
1157         std::stringstream ss;
1158         ss << d_sygusVars[i];
1159         Type type = d_sygusVars[i].getType();
1160         sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), type));
1161         //types.push_back(type);
1162       }
1163       Debug("parser-sygus") << "...made vars, #vars=" << sygusVars.size() << std::endl;
1164       */
1165
1166       //Type t = getExprManager()->mkFunctionType(types, rangeType);
1167       //Debug("parser-sygus") << "...function type : " << t << std::endl;
1168     }else{
1169       funt = rangeType;
1170     }
1171     Expr lambda = mkFunction(fun, funt, ExprManager::VAR_FLAG_DEFINED);
1172     Debug("parser-sygus") << "...made function : " << lambda << std::endl;
1173     std::vector<Expr> applyv;
1174     Expr funbv = getExprManager()->mkBoundVar(std::string("f") + fun, argTypes[0]);
1175     d_sygusFunSymbols.push_back(funbv);
1176     applyv.push_back(eval);
1177     applyv.push_back(funbv);
1178     for(size_t i = 0; i < sygusVars.size(); ++i) {
1179       applyv.push_back(sygusVars[i]);
1180     }
1181     Expr apply = getExprManager()->mkExpr(kind::APPLY_UF, applyv);
1182     Debug("parser-sygus") << "...made apply " << apply << std::endl;
1183     Debug("parser-sygus") << "--> Define " << fun << " as " << lambda << " " << apply << std::endl;
1184     Command* cmd = new DefineFunctionCommand(fun, lambda, sygusVars, apply);
1185     preemptCommand(cmd);
1186
1187     ++d_nextSygusFun;
1188   }
1189 }
1190
1191 void Smt2::mkSygusDatatype( CVC4::Datatype& dt, std::vector<CVC4::Expr>& ops,
1192                             std::vector<std::string>& cnames, std::vector< std::vector< CVC4::Type > >& cargs,
1193                             std::vector<std::string>& unresolved_gterm_sym,
1194                             std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin ) {
1195   Debug("parser-sygus") << "Making sygus datatype " << dt.getName() << std::endl;
1196   Debug("parser-sygus") << "  add constructors..." << std::endl;
1197   for( int i=0; i<(int)cnames.size(); i++ ){
1198     bool is_dup = false;
1199     bool is_dup_op = false;
1200     Expr let_body;
1201     std::vector< Expr > let_args;
1202     unsigned let_num_input_args = 0;
1203     for( int j=0; j<i; j++ ){
1204       if( ops[i]==ops[j] ){
1205         is_dup_op = true;
1206         if( cargs[i].size()==cargs[j].size() ){
1207           is_dup = true;
1208           for( unsigned k=0; k<cargs[i].size(); k++ ){
1209             if( cargs[i][k]!=cargs[j][k] ){
1210               is_dup = false;
1211               break;
1212             }
1213           }
1214         }
1215         if( is_dup ){
1216           break;
1217         }
1218       }
1219     }
1220     if( is_dup ){
1221       Debug("parser-sygus") << "--> Duplicate gterm : " << ops[i] << " at " << i << std::endl;
1222       ops.erase( ops.begin() + i, ops.begin() + i + 1 );
1223       cnames.erase( cnames.begin() + i, cnames.begin() + i + 1 );
1224       cargs.erase( cargs.begin() + i, cargs.begin() + i + 1 );
1225       i--;
1226     }else if( is_dup_op ){
1227       Debug("parser-sygus") << "--> Duplicate gterm operator : " << ops[i] << " at " << i << std::endl;
1228       //make into define-fun
1229       std::vector<CVC4::Type> fsorts;
1230       for( unsigned j=0; j<cargs[i].size(); j++ ){
1231         Type bt = sygus_to_builtin[cargs[i][j]];
1232         std::stringstream ss;
1233         ss << dt.getName() << "_x_" << i << "_" << j;
1234         Expr v = mkBoundVar(ss.str(), bt);
1235         let_args.push_back( v );
1236         fsorts.push_back( bt );
1237         Debug("parser-sygus") << ": var " << i << " " << v << " with type " << bt << " from " << cargs[i][j] << std::endl;
1238       }
1239       //make the let_body
1240       std::vector< Expr > children;
1241       if( ops[i].getKind() != kind::BUILTIN ){
1242         children.push_back( ops[i] );
1243       }
1244       children.insert( children.end(), let_args.begin(), let_args.end() );
1245       Kind sk = ops[i].getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(ops[i]);
1246       Debug("parser-sygus") << ": replace " << ops[i] << " " << ops[i].getKind() << " " << sk << std::endl;
1247       let_body = getExprManager()->mkExpr( sk, children );
1248       Debug("parser-sygus") << ": new body of function is " << let_body << std::endl;
1249
1250       Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1251       Debug("parser-sygus") << ": function type is " << ft << std::endl;
1252       std::stringstream ss;
1253       ss << dt.getName() << "_df_" << i;
1254       //replace operator and name
1255       ops[i] = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1256       cnames[i] = ss.str();
1257       d_sygus_defined_funs.push_back( ops[i] );
1258       preemptCommand( new DefineFunctionCommand(ss.str(), ops[i], let_args, let_body) );
1259       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, 0 );
1260     }else{
1261       std::map< CVC4::Expr, CVC4::Expr >::iterator it = d_sygus_let_func_to_body.find( ops[i] );
1262       if( it!=d_sygus_let_func_to_body.end() ){
1263         let_body = it->second;
1264         let_args.insert( let_args.end(), d_sygus_let_func_to_vars[ops[i]].begin(), d_sygus_let_func_to_vars[ops[i]].end() );
1265         let_num_input_args = d_sygus_let_func_to_num_input_vars[ops[i]];
1266       }
1267       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, let_num_input_args );
1268     }
1269   }
1270   Debug("parser-sygus") << "  add constructors for unresolved symbols..." << std::endl;
1271   if( !unresolved_gterm_sym.empty() ){
1272     std::vector< Type > types;
1273     Debug("parser-sygus") << "...resolve " << unresolved_gterm_sym.size() << " symbols..." << std::endl;
1274     for( unsigned i=0; i<unresolved_gterm_sym.size(); i++ ){
1275       Debug("parser-sygus") << "  resolve : " << unresolved_gterm_sym[i] << std::endl;
1276       if( isUnresolvedType(unresolved_gterm_sym[i]) ){
1277         Debug("parser-sygus") << "    it is an unresolved type." << std::endl;
1278         Type t = getSort(unresolved_gterm_sym[i]);
1279         if( std::find( types.begin(), types.end(), t )==types.end() ){
1280           types.push_back( t );
1281           //identity element
1282           Type bt = dt.getSygusType();
1283           Debug("parser-sygus") << ":  make identity function for " << bt << ", argument type " << t << std::endl;
1284           std::stringstream ss;
1285           ss << t << "_x_id";
1286           Expr let_body = mkBoundVar(ss.str(), bt);
1287           std::vector< Expr > let_args;
1288           let_args.push_back( let_body );
1289           //make the identity function
1290           Type ft = getExprManager()->mkFunctionType(bt, bt);
1291           std::stringstream ssid;
1292           ssid << unresolved_gterm_sym[i] << "_id";
1293           Expr id_op = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1294           d_sygus_defined_funs.push_back( id_op );
1295           preemptCommand( new DefineFunctionCommand(ssid.str(), id_op, let_args, let_body) );
1296           //make the sygus argument list
1297           std::vector< Type > id_carg;
1298           id_carg.push_back( t );
1299           addSygusDatatypeConstructor( dt, id_op, unresolved_gterm_sym[i], id_carg, let_body, let_args, 0 );
1300           //add to operators
1301           ops.push_back( id_op );
1302         }
1303       }else{
1304         Debug("parser-sygus") << "    ignore. (likely a free let variable)" << std::endl;
1305       }
1306     }
1307   }
1308
1309 }
1310
1311 void Smt2::addSygusDatatypeConstructor( CVC4::Datatype& dt, CVC4::Expr op, std::string& cname, std::vector< CVC4::Type >& cargs,
1312                                         CVC4::Expr& let_body, std::vector< CVC4::Expr >& let_args, unsigned let_num_input_args ) {
1313   Debug("parser-sygus") << "--> Add constructor " << cname << " to " << dt.getName() << std::endl;
1314   if( !let_body.isNull() ){
1315     Debug("parser-sygus") << "    let body = " << let_body << ", args = " << let_args.size() << "," << let_num_input_args << std::endl;
1316     //TODO : remove arguments not occurring in body
1317     //if this is a self identity function, ignore
1318     if( let_args.size()==0 && let_args[0]==let_body ){
1319       Debug("parser-sygus") << "    identity function " << cargs[0] << " to " << dt.getName() << std::endl;
1320       //TODO
1321     }
1322   }
1323   std::string name = dt.getName() + "_" + cname;
1324   std::string testerId("is-");
1325   testerId.append(name);
1326   checkDeclaration(name, CHECK_UNDECLARED, SYM_VARIABLE);
1327   checkDeclaration(testerId, CHECK_UNDECLARED, SYM_VARIABLE);
1328   CVC4::DatatypeConstructor c(name, testerId );
1329   c.setSygus( op, let_body, let_args, let_num_input_args );
1330   for( unsigned j=0; j<cargs.size(); j++ ){
1331     Debug("parser-sygus-debug") << "  arg " << j << " : " << cargs[j] << std::endl;
1332     std::stringstream sname;
1333     sname << name << "_" << j;
1334     c.addArg(sname.str(), cargs[j]);
1335   }
1336   dt.addConstructor(c);
1337 }
1338
1339
1340 // i is index in datatypes/ops
1341 // j is index is datatype
1342 Expr Smt2::getSygusAssertion( std::vector<DatatypeType>& datatypeTypes, std::vector< std::vector<Expr> >& ops,
1343                               std::map<DatatypeType, Expr>& evals, std::vector<Expr>& terms,
1344                               Expr eval, const Datatype& dt, size_t i, size_t j ) {
1345   const DatatypeConstructor& ctor = dt[j];
1346   Debug("parser-sygus") << "Sygus : process constructor " << j << " : " << dt[j] << std::endl;
1347   std::vector<Expr> bvs, extraArgs;
1348   for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1349     std::string vname = "v_" + ctor[k].getName();
1350     Expr bv = getExprManager()->mkBoundVar(vname, SelectorType(ctor[k].getType()).getRangeType());
1351     bvs.push_back(bv);
1352     extraArgs.push_back(bv);
1353   }
1354   if( !terms[0].isNull() ){
1355     bvs.insert(bvs.end(), terms[0].begin(), terms[0].end());
1356   }
1357   Expr bvl;
1358   if( !bvs.empty() ){
1359     bvl = getExprManager()->mkExpr(kind::BOUND_VAR_LIST, bvs);
1360   }
1361   Debug("parser-sygus") << "...made bv list " << bvl << std::endl;
1362   std::vector<Expr> patv;
1363   patv.push_back(eval);
1364   std::vector<Expr> applyv;
1365   applyv.push_back(ctor.getConstructor());
1366   applyv.insert(applyv.end(), extraArgs.begin(), extraArgs.end());
1367   for(size_t k = 0; k < applyv.size(); ++k) {
1368   }
1369   Expr cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1370   Debug("parser-sygus") << "...made eval ctor apply " << cpatv << std::endl;
1371   patv.push_back(cpatv);
1372   if( !terms[0].isNull() ){
1373     patv.insert(patv.end(), terms[0].begin(), terms[0].end());
1374   }
1375   Expr evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1376   Debug("parser-sygus") << "...made eval apply " << evalApply << std::endl;
1377   std::vector<Expr> builtApply;
1378   for(size_t k = 0; k < extraArgs.size(); ++k) {
1379     std::vector<Expr> patvb;
1380     patvb.push_back(evals[DatatypeType(extraArgs[k].getType())]);
1381     patvb.push_back(extraArgs[k]);
1382     if( !terms[0].isNull() ){
1383       patvb.insert(patvb.end(), terms[0].begin(), terms[0].end());
1384     }
1385     Debug("parser-sygus-debug") << "...add to built apply " << evals[DatatypeType(extraArgs[k].getType())] << " " << extraArgs[k] << " " << extraArgs[k].getType() << std::endl;
1386     builtApply.push_back(getExprManager()->mkExpr(kind::APPLY_UF, patvb));
1387     Debug("parser-sygus-debug") << "...added " << builtApply.back() << std::endl;
1388   }
1389   for(size_t k = 0; k < builtApply.size(); ++k) {
1390   }
1391   Expr builtTerm;
1392   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;
1393   if( ops[i][j].getKind() != kind::BUILTIN ){
1394     Kind ok = kind::UNDEFINED_KIND;
1395     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() ){
1396       ok = kind::APPLY;
1397     }else{
1398       Type t = ops[i][j].getType();
1399       if( t.isConstructor() ){
1400         ok = kind::APPLY_CONSTRUCTOR;
1401       }else if( t.isSelector() ){
1402         ok = kind::APPLY_SELECTOR;
1403       }else if( t.isTester() ){
1404         ok = kind::APPLY_TESTER;
1405       }else{
1406         ok = getExprManager()->operatorToKind( ops[i][j] );
1407       }
1408     }
1409     Debug("parser-sygus") << "...processed operator kind : " << ok << std::endl;
1410     if( ok!=kind::UNDEFINED_KIND ){
1411       builtTerm = getExprManager()->mkExpr(ok, ops[i][j], builtApply);
1412     }else{
1413       builtTerm = ops[i][j];
1414     }
1415   }else{
1416     if( !builtApply.empty() ){
1417       builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1418     }else{
1419       builtTerm = ops[i][j];
1420     }
1421   }
1422   Debug("parser-sygus") << "...made built term " << builtTerm << std::endl;
1423   Expr assertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1424   if( !bvl.isNull() ){
1425     Expr pattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1426     pattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, pattern);
1427     assertion = getExprManager()->mkExpr(kind::FORALL, bvl, assertion, pattern);
1428   }
1429   Debug("parser-sygus") << "...made assertion " << assertion << std::endl;
1430
1431   //linearize multiplication if possible
1432   if( builtTerm.getKind()==kind::MULT ){
1433     for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1434       Type at = SelectorType(ctor[k].getType()).getRangeType();
1435       if( at.isDatatype() ){
1436         DatatypeType atd = (DatatypeType)SelectorType(ctor[k].getType()).getRangeType();
1437         Debug("parser-sygus") << "Argument " << k << " " << atd << std::endl;
1438         std::vector<DatatypeType>::iterator itd = std::find( datatypeTypes.begin(), datatypeTypes.end(), atd );
1439         if( itd!=datatypeTypes.end() ){
1440           Debug("parser-sygus2") << "Exists in datatypeTypes." << std::endl;
1441           unsigned index = itd-datatypeTypes.begin();
1442           Debug("parser-sygus2") << "index = " << index << std::endl;
1443           bool isConst = true;
1444           for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1445             Debug("parser-sygus2") << "ops[" << cc << "]=" << ops[index][cc] << std::endl;
1446             if( ops[index][cc].getKind() != kind::CONST_RATIONAL ){
1447               isConst = false;
1448               break;
1449             }
1450           }
1451           if( isConst ){
1452             Debug("parser-sygus") << "Linearize multiplication " << ctor << " based on argument " << k << std::endl;
1453             const Datatype & atdd = atd.getDatatype();
1454             std::vector<Expr> assertions;
1455             std::vector<Expr> nbvs;
1456             for( unsigned a=0; a<bvl.getNumChildren(); a++ ){
1457               if( a!=k ){
1458                 nbvs.push_back( bvl[a] );
1459               }
1460             }
1461             Expr nbvl = getExprManager()->mkExpr( kind::BOUND_VAR_LIST, nbvs );
1462             for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1463               //Make new assertion based on partially instantiating existing
1464               applyv[k+1] = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, atdd[cc].getConstructor());
1465               Debug("parser-sygus") << "applyv " << applyv[k+1] << std::endl;
1466               cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1467               Debug("parser-sygus") << "cpatv " << cpatv << std::endl;
1468               patv[1] = cpatv;
1469               evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1470               Debug("parser-sygus") << "evalApply " << evalApply << std::endl;
1471               builtApply[k] = ops[index][cc];
1472               Debug("parser-sygus") << "builtApply " << builtApply[k] << std::endl;
1473               builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1474               Debug("parser-sygus") << "builtTerm " << builtTerm << std::endl;
1475               Expr eassertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1476               Expr epattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1477               epattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, epattern);
1478               eassertion = getExprManager()->mkExpr(kind::FORALL, nbvl, eassertion, epattern);
1479               assertions.push_back( eassertion );
1480             }
1481             assertion = assertions.size()==1 ? assertions[0] : getExprManager()->mkExpr( kind::AND, assertions );
1482             Debug("parser-sygus") << "...(linearized) assertion is: " << assertion << std::endl;
1483           }
1484         }
1485       }
1486     }
1487   }
1488   return assertion;
1489 }
1490
1491 const void Smt2::getSygusPrimedVars( std::vector<Expr>& vars, bool isPrimed ) {
1492   for( unsigned i=0; i<d_sygusVars.size(); i++ ){
1493     Expr v = d_sygusVars[i];
1494     std::map< Expr, bool >::iterator it = d_sygusVarPrimed.find( v );
1495     if( it!=d_sygusVarPrimed.end() ){
1496       if( it->second==isPrimed ){
1497         vars.push_back( v );
1498       }
1499     }else{
1500       //should never happen
1501     }
1502   }
1503 }
1504
1505 }/* CVC4::parser namespace */
1506 }/* CVC4 namespace */