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