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::TRANSPOSE, "transpose");
 228     addOperator(kind::TCLOSURE, "tclosure");
 229     addOperator(kind::JOIN, "join");
 230     addOperator(kind::PRODUCT, "product");
 231     addOperator(kind::SINGLETON, "singleton");
 232     addOperator(kind::INSERT, "insert");
 233     addOperator(kind::CARD, "card");
 234     break;
 235
 236   case THEORY_DATATYPES:
 237     Parser::addOperator(kind::APPLY_CONSTRUCTOR);
 238     Parser::addOperator(kind::APPLY_TESTER);
 239     Parser::addOperator(kind::APPLY_SELECTOR);
 240     Parser::addOperator(kind::APPLY_SELECTOR_TOTAL);
 241     break;
 242
 243   case THEORY_STRINGS:
 244     defineType("String", getExprManager()->stringType());
 245     defineType("Int", getExprManager()->integerType());
 246     addStringOperators();
 247     break;
 248
 249   case THEORY_UF:
 250     Parser::addOperator(kind::APPLY_UF);
 251     break;
 252
 253   case THEORY_FP:
 254     defineType("RoundingMode", getExprManager()->roundingModeType());
 255     defineType("Float16", getExprManager()->mkFloatingPointType(5, 11));
 256     defineType("Float32", getExprManager()->mkFloatingPointType(8, 24));
 257     defineType("Float64", getExprManager()->mkFloatingPointType(11, 53));
 258     defineType("Float128", getExprManager()->mkFloatingPointType(15, 113));
 259     addFloatingPointOperators();
 260     break;
 261
 262   default:
 263     std::stringstream ss;
 264     ss << "internal error: unsupported theory " << theory;
 265     throw ParserException(ss.str());
 266   }
 267 }
 268
 269 void Smt2::addOperator(Kind kind, const std::string& name) {
 270   Debug("parser") << "Smt2::addOperator( " << kind << ", " << name << " )"
 271                   << std::endl;
 272   Parser::addOperator(kind);
 273   operatorKindMap[name] = kind;
 274 }
 275
 276 Kind Smt2::getOperatorKind(const std::string& name) const {
 277   // precondition: isOperatorEnabled(name)
 278   return operatorKindMap.find(name)->second;
 279 }
 280
 281 bool Smt2::isOperatorEnabled(const std::string& name) const {
 282   return operatorKindMap.find(name) != operatorKindMap.end();
 283 }
 284
 285 bool Smt2::isTheoryEnabled(Theory theory) const {
 286   switch(theory) {
 287   case THEORY_ARRAYS:
 288     return d_logic.isTheoryEnabled(theory::THEORY_ARRAY);
 289   case THEORY_BITVECTORS:
 290     return d_logic.isTheoryEnabled(theory::THEORY_BV);
 291   case THEORY_CORE:
 292     return true;
 293   case THEORY_DATATYPES:
 294     return d_logic.isTheoryEnabled(theory::THEORY_DATATYPES);
 295   case THEORY_INTS:
 296     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 297       d_logic.areIntegersUsed() && ( !d_logic.areRealsUsed() );
 298   case THEORY_REALS:
 299     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 300       ( !d_logic.areIntegersUsed() ) && d_logic.areRealsUsed();
 301   case THEORY_REALS_INTS:
 302     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 303       d_logic.areIntegersUsed() && d_logic.areRealsUsed();
 304   case THEORY_QUANTIFIERS:
 305     return d_logic.isQuantified();
 306   case THEORY_SETS:
 307     return d_logic.isTheoryEnabled(theory::THEORY_SETS);
 308   case THEORY_STRINGS:
 309     return d_logic.isTheoryEnabled(theory::THEORY_STRINGS);
 310   case THEORY_UF:
 311     return d_logic.isTheoryEnabled(theory::THEORY_UF);
 312   case THEORY_FP:
 313     return d_logic.isTheoryEnabled(theory::THEORY_FP);
 314   default:
 315     std::stringstream ss;
 316     ss << "internal error: unsupported theory " << theory;
 317     throw ParserException(ss.str());
 318   }
 319 }
 320
 321 bool Smt2::logicIsSet() {
 322   return d_logicSet;
 323 }
 324
 325 void Smt2::reset() {
 326   d_logicSet = false;
 327   d_logic = LogicInfo();
 328   operatorKindMap.clear();
 329   d_lastNamedTerm = std::pair<Expr, std::string>();
 330   d_unsatCoreNames = std::stack< std::map<Expr, std::string> >();
 331   this->Parser::reset();
 332
 333   d_unsatCoreNames.push(std::map<Expr, std::string>());
 334   if( !strictModeEnabled() ) {
 335     addTheory(Smt2::THEORY_CORE);
 336   }
 337 }
 338
 339 void Smt2::resetAssertions() {
 340   this->Parser::reset();
 341 }
 342
 343 void Smt2::setLogic(std::string name) {
 344   if(sygus()) {
 345     if(name == "Arrays") {
 346       name = "AUF";
 347     } else if(name == "Reals") {
 348       name = "UFLRA";
 349     } else if(name == "LIA") {
 350       name = "UFLIA";
 351     } else if(name == "LRA") {
 352       name = "UFLRA";
 353     } else if(name == "LIRA") {
 354       name = "UFLIRA";
 355     } else if(name == "BV") {
 356       name = "UFBV";
 357     } else if(name == "ALL_SUPPORTED") {
 358       //no change
 359     } else {
 360       std::stringstream ss;
 361       ss << "Unknown SyGuS background logic `" << name << "'";
 362       parseError(ss.str());
 363     }
 364   }
 365
 366   d_logicSet = true;
 367   if(logicIsForced()) {
 368     d_logic = getForcedLogic();
 369   } else {
 370     d_logic = name;
 371   }
 372
 373   // Core theory belongs to every logic
 374   addTheory(THEORY_CORE);
 375
 376   if(d_logic.isTheoryEnabled(theory::THEORY_UF)) {
 377     addTheory(THEORY_UF);
 378   }
 379
 380   if(d_logic.isTheoryEnabled(theory::THEORY_ARITH)) {
 381     if(d_logic.areIntegersUsed()) {
 382       if(d_logic.areRealsUsed()) {
 383         addTheory(THEORY_REALS_INTS);
 384       } else {
 385         addTheory(THEORY_INTS);
 386       }
 387     } else if(d_logic.areRealsUsed()) {
 388       addTheory(THEORY_REALS);
 389     }
 390   }
 391
 392   if(d_logic.isTheoryEnabled(theory::THEORY_ARRAY)) {
 393     addTheory(THEORY_ARRAYS);
 394   }
 395
 396   if(d_logic.isTheoryEnabled(theory::THEORY_BV)) {
 397     addTheory(THEORY_BITVECTORS);
 398   }
 399
 400   if(d_logic.isTheoryEnabled(theory::THEORY_DATATYPES)) {
 401     addTheory(THEORY_DATATYPES);
 402   }
 403
 404   if(d_logic.isTheoryEnabled(theory::THEORY_SETS)) {
 405     addTheory(THEORY_SETS);
 406   }
 407
 408   if(d_logic.isTheoryEnabled(theory::THEORY_STRINGS)) {
 409     addTheory(THEORY_STRINGS);
 410   }
 411
 412   if(d_logic.isQuantified()) {
 413     addTheory(THEORY_QUANTIFIERS);
 414   }
 415
 416   if (d_logic.isTheoryEnabled(theory::THEORY_FP)) {
 417     addTheory(THEORY_FP);
 418   }
 419
 420 }/* Smt2::setLogic() */
 421
 422 void Smt2::setInfo(const std::string& flag, const SExpr& sexpr) {
 423   // TODO: ???
 424 }
 425
 426 void Smt2::setOption(const std::string& flag, const SExpr& sexpr) {
 427   // TODO: ???
 428 }
 429
 430 void Smt2::checkThatLogicIsSet() {
 431   if( ! logicIsSet() ) {
 432     if(strictModeEnabled()) {
 433       parseError("set-logic must appear before this point.");
 434     } else {
 435       if(sygus()) {
 436         setLogic("LIA");
 437       } else {
 438         warning("No set-logic command was given before this point.");
 439         warning("CVC4 will assume the non-standard ALL_SUPPORTED logic.");
 440         warning("Consider setting a stricter logic for (likely) better performance.");
 441         warning("To suppress this warning in the future use (set-logic ALL_SUPPORTED).");
 442
 443         setLogic("ALL_SUPPORTED");
 444       }
 445
 446       Command* c = new SetBenchmarkLogicCommand("ALL_SUPPORTED");
 447       c->setMuted(true);
 448       preemptCommand(c);
 449     }
 450   }
 451 }
 452
 453 /* The include are managed in the lexer but called in the parser */
 454 // Inspired by http://www.antlr3.org/api/C/interop.html
 455
 456 static bool newInputStream(const std::string& filename, pANTLR3_LEXER lexer) {
 457   Debug("parser") << "Including " << filename << std::endl;
 458   // Create a new input stream and take advantage of built in stream stacking
 459   // in C target runtime.
 460   //
 461   pANTLR3_INPUT_STREAM    in;
 462 #ifdef CVC4_ANTLR3_OLD_INPUT_STREAM
 463   in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) filename.c_str());
 464 #else /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 465   in = antlr3FileStreamNew((pANTLR3_UINT8) filename.c_str(), ANTLR3_ENC_8BIT);
 466 #endif /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 467   if( in == NULL ) {
 468     Debug("parser") << "Can't open " << filename << std::endl;
 469     return false;
 470   }
 471   // Same thing as the predefined PUSHSTREAM(in);
 472   lexer->pushCharStream(lexer, in);
 473   // restart it
 474   //lexer->rec->state->tokenStartCharIndex      = -10;
 475   //lexer->emit(lexer);
 476
 477   // Note that the input stream is not closed when it EOFs, I don't bother
 478   // to do it here, but it is up to you to track streams created like this
 479   // and destroy them when the whole parse session is complete. Remember that you
 480   // don't want to do this until all tokens have been manipulated all the way through
 481   // your tree parsers etc as the token does not store the text it just refers
 482   // back to the input stream and trying to get the text for it will abort if you
 483   // close the input stream too early.
 484
 485   //TODO what said before
 486   return true;
 487 }
 488
 489 void Smt2::includeFile(const std::string& filename) {
 490   // security for online version
 491   if(!canIncludeFile()) {
 492     parseError("include-file feature was disabled for this run.");
 493   }
 494
 495   // Get the lexer
 496   AntlrInput* ai = static_cast<AntlrInput*>(getInput());
 497   pANTLR3_LEXER lexer = ai->getAntlr3Lexer();
 498   // get the name of the current stream "Does it work inside an include?"
 499   const std::string inputName = ai->getInputStreamName();
 500
 501   // Find the directory of the current input file
 502   std::string path;
 503   size_t pos = inputName.rfind('/');
 504   if(pos != std::string::npos) {
 505     path = std::string(inputName, 0, pos + 1);
 506   }
 507   path.append(filename);
 508   if(!newInputStream(path, lexer)) {
 509     parseError("Couldn't open include file `" + path + "'");
 510   }
 511 }
 512
 513 Expr Smt2::mkSygusVar(const std::string& name, const Type& type, bool isPrimed) {
 514   Expr e = mkBoundVar(name, type);
 515   d_sygusVars.push_back(e);
 516   d_sygusVarPrimed[e] = false;
 517   if( isPrimed ){
 518     std::stringstream ss;
 519     ss << name << "'";
 520     Expr ep = mkBoundVar(ss.str(), type);
 521     d_sygusVars.push_back(ep);
 522     d_sygusVarPrimed[ep] = true;
 523   }
 524   return e;
 525 }
 526
 527 void collectSygusGrammarTypesFor( Type range, std::vector< Type >& types, std::map< Type, std::vector< DatatypeConstructorArg > >& sels ){
 528   if( !range.isBoolean() ){
 529     if( std::find( types.begin(), types.end(), range )==types.end() ){
 530       Debug("parser-sygus") << "...will make grammar for " << range << std::endl;
 531       types.push_back( range );
 532       if( range.isDatatype() ){
 533         const Datatype& dt = ((DatatypeType)range).getDatatype();
 534         for( unsigned i=0; i<dt.getNumConstructors(); i++ ){
 535           for( unsigned j=0; j<dt[i].getNumArgs(); j++ ){
 536             Type crange = ((SelectorType)dt[i][j].getType()).getRangeType();
 537             sels[crange].push_back( dt[i][j] );
 538             collectSygusGrammarTypesFor( crange, types, sels );
 539           }
 540         }
 541       }
 542     }
 543   }
 544 }
 545
 546 void Smt2::mkSygusDefaultGrammar( const Type& range, Expr& bvl, const std::string& fun, std::vector<CVC4::Datatype>& datatypes,
 547                                   std::vector<Type>& sorts, std::vector< std::vector<Expr> >& ops, std::vector<Expr> sygus_vars, int& startIndex ) {
 548
 549   //if( !range.isBoolean() && !range.isInteger() && !range.isBitVector() && !range.isDatatype() ){
 550   //  parseError("No default grammar for type.");
 551   //}
 552   startIndex = -1;
 553   Debug("parser-sygus") << "Construct default grammar for " << fun << " " << range << std::endl;
 554   std::map< CVC4::Type, CVC4::Type > sygus_to_builtin;
 555
 556   std::vector< Type > types;
 557   std::map< Type, std::vector< DatatypeConstructorArg > > sels;
 558   //types for each of the variables
 559   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 560     collectSygusGrammarTypesFor( sygus_vars[i].getType(), types, sels );
 561   }
 562   //types connected to range
 563   collectSygusGrammarTypesFor( range, types, sels );
 564
 565   //name of boolean sort
 566   std::stringstream ssb;
 567   ssb << fun << "_Bool";
 568   std::string dbname = ssb.str();
 569   Type unres_bt = mkUnresolvedType(ssb.str());
 570
 571   std::vector< Type > unres_types;
 572   std::map< Type, Type > type_to_unres;
 573   for( unsigned i=0; i<types.size(); i++ ){
 574     std::stringstream ss;
 575     ss << fun << "_" << types[i];
 576     std::string dname = ss.str();
 577     datatypes.push_back(Datatype(dname));
 578     ops.push_back(std::vector<Expr>());
 579     //make unresolved type
 580     Type unres_t = mkUnresolvedType(dname);
 581     unres_types.push_back(unres_t);
 582     type_to_unres[types[i]] = unres_t;
 583     sygus_to_builtin[unres_t] = types[i];
 584   }
 585   for( unsigned i=0; i<types.size(); i++ ){
 586     Debug("parser-sygus") << "Make grammar for " << types[i] << " " << unres_types[i] << std::endl;
 587     std::vector<std::string> cnames;
 588     std::vector<std::vector<CVC4::Type> > cargs;
 589     std::vector<std::string> unresolved_gterm_sym;
 590     Type unres_t = unres_types[i];
 591     //add variables
 592     for( unsigned j=0; j<sygus_vars.size(); j++ ){
 593       if( sygus_vars[j].getType()==types[i] ){
 594         std::stringstream ss;
 595         ss << sygus_vars[j];
 596         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 597         ops[i].push_back( sygus_vars[j] );
 598         cnames.push_back( ss.str() );
 599         cargs.push_back( std::vector< CVC4::Type >() );
 600       }
 601     }
 602     //add constants
 603     std::vector< Expr > consts;
 604     mkSygusConstantsForType( types[i], consts );
 605     for( unsigned j=0; j<consts.size(); j++ ){
 606       std::stringstream ss;
 607       ss << consts[j];
 608       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 609       ops[i].push_back( consts[j] );
 610       cnames.push_back( ss.str() );
 611       cargs.push_back( std::vector< CVC4::Type >() );
 612     }
 613     //ITE
 614     CVC4::Kind k = kind::ITE;
 615     Debug("parser-sygus") << "...add for " << k << std::endl;
 616     ops[i].push_back(getExprManager()->operatorOf(k));
 617     cnames.push_back( kind::kindToString(k) );
 618     cargs.push_back( std::vector< CVC4::Type >() );
 619     cargs.back().push_back(unres_bt);
 620     cargs.back().push_back(unres_t);
 621     cargs.back().push_back(unres_t);
 622
 623     if( types[i].isInteger() ){
 624       for( unsigned j=0; j<2; j++ ){
 625         CVC4::Kind k = j==0 ? kind::PLUS : kind::MINUS;
 626         Debug("parser-sygus") << "...add for " << k << std::endl;
 627         ops[i].push_back(getExprManager()->operatorOf(k));
 628         cnames.push_back(kind::kindToString(k));
 629         cargs.push_back( std::vector< CVC4::Type >() );
 630         cargs.back().push_back(unres_t);
 631         cargs.back().push_back(unres_t);
 632       }
 633     }else if( types[i].isDatatype() ){
 634       Debug("parser-sygus") << "...add for constructors" << std::endl;
 635       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 636       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 637         Debug("parser-sygus") << "...for " << dt[k].getName() << std::endl;
 638         ops[i].push_back( dt[k].getConstructor() );
 639         cnames.push_back( dt[k].getName() );
 640         cargs.push_back( std::vector< CVC4::Type >() );
 641         for( unsigned j=0; j<dt[k].getNumArgs(); j++ ){
 642           Type crange = ((SelectorType)dt[k][j].getType()).getRangeType();
 643           //Assert( type_to_unres.find(crange)!=type_to_unres.end() );
 644           cargs.back().push_back( type_to_unres[crange] );
 645         }
 646       }
 647     }else{
 648       std::stringstream sserr;
 649       sserr << "No implementation for default Sygus grammar of type " << types[i] << std::endl;
 650       warning(sserr.str());
 651     }
 652     //add for all selectors to this type
 653     if( !sels[types[i]].empty() ){
 654       Debug("parser-sygus") << "...add for selectors" << std::endl;
 655       for( unsigned j=0; j<sels[types[i]].size(); j++ ){
 656         Debug("parser-sygus") << "...for " << sels[types[i]][j].getName() << std::endl;
 657         Type arg_type = ((SelectorType)sels[types[i]][j].getType()).getDomain();
 658         ops[i].push_back( sels[types[i]][j].getSelector() );
 659         cnames.push_back( sels[types[i]][j].getName() );
 660         cargs.push_back( std::vector< CVC4::Type >() );
 661         //Assert( type_to_unres.find(arg_type)!=type_to_unres.end() );
 662         cargs.back().push_back( type_to_unres[arg_type] );
 663       }
 664     }
 665     Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 666     datatypes[i].setSygus( types[i], bvl, true, true );
 667     mkSygusDatatype( datatypes[i], ops[i], cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 668     sorts.push_back( types[i] );
 669     //set start index if applicable
 670     if( types[i]==range ){
 671       startIndex = i;
 672     }
 673   }
 674
 675   //make Boolean type
 676   Type btype = getExprManager()->booleanType();
 677   datatypes.push_back(Datatype(dbname));
 678   ops.push_back(std::vector<Expr>());
 679   std::vector<std::string> cnames;
 680   std::vector<std::vector<CVC4::Type> > cargs;
 681   std::vector<std::string> unresolved_gterm_sym;
 682   Debug("parser-sygus") << "Make grammar for " << btype << " " << datatypes.back() << std::endl;
 683   //add variables
 684   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 685     if( sygus_vars[i].getType().isBoolean() ){
 686       std::stringstream ss;
 687       ss << sygus_vars[i];
 688       Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 689       ops.back().push_back( sygus_vars[i] );
 690       cnames.push_back( ss.str() );
 691       cargs.push_back( std::vector< CVC4::Type >() );
 692     }
 693   }
 694   //add constants if no variables and no connected types
 695   if( ops.back().empty() && types.empty() ){
 696     std::vector< Expr > consts;
 697     mkSygusConstantsForType( btype, consts );
 698     for( unsigned j=0; j<consts.size(); j++ ){
 699       std::stringstream ss;
 700       ss << consts[j];
 701       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 702       ops.back().push_back( consts[j] );
 703       cnames.push_back( ss.str() );
 704       cargs.push_back( std::vector< CVC4::Type >() );
 705     }
 706   }
 707   //add operators
 708   for( unsigned i=0; i<3; i++ ){
 709     CVC4::Kind k = i==0 ? kind::NOT : ( i==1 ? kind::AND : kind::OR );
 710     Debug("parser-sygus") << "...add for " << k << std::endl;
 711     ops.back().push_back(getExprManager()->operatorOf(k));
 712     cnames.push_back(kind::kindToString(k));
 713     cargs.push_back( std::vector< CVC4::Type >() );
 714     if( k==kind::NOT ){
 715       cargs.back().push_back(unres_bt);
 716     }else if( k==kind::AND || k==kind::OR ){
 717       cargs.back().push_back(unres_bt);
 718       cargs.back().push_back(unres_bt);
 719     }
 720   }
 721   //add predicates for types
 722   for( unsigned i=0; i<types.size(); i++ ){
 723     Debug("parser-sygus") << "...add predicates for " << types[i] << std::endl;
 724     //add equality per type
 725     CVC4::Kind k = kind::EQUAL;
 726     Debug("parser-sygus") << "...add for " << k << std::endl;
 727     ops.back().push_back(getExprManager()->operatorOf(k));
 728     std::stringstream ss;
 729     ss << kind::kindToString(k) << "_" << types[i];
 730     cnames.push_back(ss.str());
 731     cargs.push_back( std::vector< CVC4::Type >() );
 732     cargs.back().push_back(unres_types[i]);
 733     cargs.back().push_back(unres_types[i]);
 734     //type specific predicates
 735     if( types[i].isInteger() ){
 736       CVC4::Kind k = kind::LEQ;
 737       Debug("parser-sygus") << "...add for " << k << std::endl;
 738       ops.back().push_back(getExprManager()->operatorOf(k));
 739       cnames.push_back(kind::kindToString(k));
 740       cargs.push_back( std::vector< CVC4::Type >() );
 741       cargs.back().push_back(unres_types[i]);
 742       cargs.back().push_back(unres_types[i]);
 743     }else if( types[i].isDatatype() ){
 744       //add for testers
 745       Debug("parser-sygus") << "...add for testers" << std::endl;
 746       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 747       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 748         Debug("parser-sygus") << "...for " << dt[k].getTesterName() << std::endl;
 749         ops.back().push_back(dt[k].getTester());
 750         cnames.push_back(dt[k].getTesterName());
 751         cargs.push_back( std::vector< CVC4::Type >() );
 752         cargs.back().push_back(unres_types[i]);
 753       }
 754     }
 755   }
 756   if( range==btype ){
 757     startIndex = sorts.size();
 758   }
 759   Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 760   datatypes.back().setSygus( btype, bvl, true, true );
 761   mkSygusDatatype( datatypes.back(), ops.back(), cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 762   sorts.push_back( btype );
 763
 764   Debug("parser-sygus") << "...finished make default grammar for " << fun << " " << range << std::endl;
 765 }
 766
 767 void Smt2::mkSygusConstantsForType( const Type& type, std::vector<CVC4::Expr>& ops ) {
 768   if( type.isInteger() ){
 769     ops.push_back(getExprManager()->mkConst(Rational(0)));
 770     ops.push_back(getExprManager()->mkConst(Rational(1)));
 771   }else if( type.isBitVector() ){
 772     unsigned sz = ((BitVectorType)type).getSize();
 773     BitVector bval0(sz, (unsigned int)0);
 774     ops.push_back( getExprManager()->mkConst(bval0) );
 775     BitVector bval1(sz, (unsigned int)1);
 776     ops.push_back( getExprManager()->mkConst(bval1) );
 777   }else if( type.isBoolean() ){
 778     ops.push_back(getExprManager()->mkConst(true));
 779     ops.push_back(getExprManager()->mkConst(false));
 780   }
 781   //TODO : others?
 782 }
 783
 784 //  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)
 785 //  This method may also add new elements pairwise into datatypes/sorts/ops/cnames/cargs in the case of non-flat gterms.
 786 void Smt2::processSygusGTerm( CVC4::SygusGTerm& sgt, int index,
 787                               std::vector< CVC4::Datatype >& datatypes,
 788                               std::vector< CVC4::Type>& sorts,
 789                               std::vector< std::vector<CVC4::Expr> >& ops,
 790                               std::vector< std::vector<std::string> >& cnames,
 791                               std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 792                               std::vector< bool >& allow_const,
 793                               std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 794                               std::vector<CVC4::Expr>& sygus_vars,
 795                               std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin, std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr,
 796                               CVC4::Type& ret, bool isNested ){
 797   if( sgt.d_gterm_type==SygusGTerm::gterm_op || sgt.d_gterm_type==SygusGTerm::gterm_let ){
 798     Debug("parser-sygus") << "Add " << sgt.d_expr << " to datatype " << index << std::endl;
 799     Kind oldKind;
 800     Kind newKind = kind::UNDEFINED_KIND;
 801     //convert to UMINUS if one child of MINUS
 802     if( sgt.d_children.size()==1 && sgt.d_expr==getExprManager()->operatorOf(kind::MINUS) ){
 803       oldKind = kind::MINUS;
 804       newKind = kind::UMINUS;
 805     }
 806     //convert to IFF if boolean EQUAL
 807     if( sgt.d_expr==getExprManager()->operatorOf(kind::EQUAL) ){
 808       Type ctn = sgt.d_children[0].d_type;
 809       std::map< CVC4::Type, CVC4::Type >::iterator it = sygus_to_builtin.find( ctn );
 810       if( it != sygus_to_builtin.end() && it->second.isBoolean() ){
 811         oldKind = kind::EQUAL;
 812         newKind = kind::IFF;
 813       }
 814     }
 815     if( newKind!=kind::UNDEFINED_KIND ){
 816       Expr newExpr = getExprManager()->operatorOf(newKind);
 817       Debug("parser-sygus") << "Replace " << sgt.d_expr << " with " << newExpr << std::endl;
 818       sgt.d_expr = newExpr;
 819       std::string oldName = kind::kindToString(oldKind);
 820       std::string newName = kind::kindToString(newKind);
 821       size_t pos = 0;
 822       if((pos = sgt.d_name.find(oldName, pos)) != std::string::npos){
 823         sgt.d_name.replace(pos, oldName.length(), newName);
 824       }
 825     }
 826     ops[index].push_back( sgt.d_expr );
 827     cnames[index].push_back( sgt.d_name );
 828     cargs[index].push_back( std::vector< CVC4::Type >() );
 829     for( unsigned i=0; i<sgt.d_children.size(); i++ ){
 830       std::stringstream ss;
 831       ss << datatypes[index].getName() << "_" << ops[index].size() << "_arg_" << i;
 832       std::string sub_dname = ss.str();
 833       //add datatype for child
 834       Type null_type;
 835       pushSygusDatatypeDef( null_type, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
 836       int sub_dt_index = datatypes.size()-1;
 837       //process child
 838       Type sub_ret;
 839       processSygusGTerm( sgt.d_children[i], sub_dt_index, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 840                          sygus_vars, sygus_to_builtin, sygus_to_builtin_expr, sub_ret, true );
 841       //process the nested gterm (either pop the last datatype, or flatten the argument)
 842       Type tt = processSygusNestedGTerm( sub_dt_index, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 843                                          sygus_to_builtin, sygus_to_builtin_expr, sub_ret );
 844       cargs[index].back().push_back(tt);
 845     }
 846     //if let, must create operator
 847     if( sgt.d_gterm_type==SygusGTerm::gterm_let ){
 848       processSygusLetConstructor( sgt.d_let_vars, index, datatypes, sorts, ops, cnames, cargs,
 849                                   sygus_vars, sygus_to_builtin, sygus_to_builtin_expr );
 850     }
 851   }else if( sgt.d_gterm_type==SygusGTerm::gterm_constant ){
 852     if( sgt.getNumChildren()!=0 ){
 853       parseError("Bad syntax for Sygus Constant.");
 854     }
 855     std::vector< Expr > consts;
 856     mkSygusConstantsForType( sgt.d_type, consts );
 857     Debug("parser-sygus") << "...made " << consts.size() << " constants." << std::endl;
 858     for( unsigned i=0; i<consts.size(); i++ ){
 859       std::stringstream ss;
 860       ss << consts[i];
 861       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 862       ops[index].push_back( consts[i] );
 863       cnames[index].push_back( ss.str() );
 864       cargs[index].push_back( std::vector< CVC4::Type >() );
 865     }
 866     allow_const[index] = true;
 867   }else if( sgt.d_gterm_type==SygusGTerm::gterm_variable || sgt.d_gterm_type==SygusGTerm::gterm_input_variable ){
 868     if( sgt.getNumChildren()!=0 ){
 869       parseError("Bad syntax for Sygus Variable.");
 870     }
 871     Debug("parser-sygus") << "...process " << sygus_vars.size() << " variables." << std::endl;
 872     for( unsigned i=0; i<sygus_vars.size(); i++ ){
 873       if( sygus_vars[i].getType()==sgt.d_type ){
 874         std::stringstream ss;
 875         ss << sygus_vars[i];
 876         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 877         ops[index].push_back( sygus_vars[i] );
 878         cnames[index].push_back( ss.str() );
 879         cargs[index].push_back( std::vector< CVC4::Type >() );
 880       }
 881     }
 882   }else if( sgt.d_gterm_type==SygusGTerm::gterm_nested_sort ){
 883     ret = sgt.d_type;
 884   }else if( sgt.d_gterm_type==SygusGTerm::gterm_unresolved ){
 885     if( isNested ){
 886       if( isUnresolvedType(sgt.d_name) ){
 887         ret = getSort(sgt.d_name);
 888       }else{
 889         //nested, unresolved symbol...fail
 890         std::stringstream ss;
 891         ss << "Cannot handle nested unresolved symbol " << sgt.d_name << std::endl;
 892         parseError(ss.str());
 893       }
 894     }else{
 895       //will resolve when adding constructors
 896       unresolved_gterm_sym[index].push_back(sgt.d_name);
 897     }
 898   }else if( sgt.d_gterm_type==SygusGTerm::gterm_ignore ){
 899
 900   }
 901 }
 902
 903 bool Smt2::pushSygusDatatypeDef( Type t, std::string& dname,
 904                                   std::vector< CVC4::Datatype >& datatypes,
 905                                   std::vector< CVC4::Type>& sorts,
 906                                   std::vector< std::vector<CVC4::Expr> >& ops,
 907                                   std::vector< std::vector<std::string> >& cnames,
 908                                   std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 909                                   std::vector< bool >& allow_const,
 910                                   std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 911   sorts.push_back(t);
 912   datatypes.push_back(Datatype(dname));
 913   ops.push_back(std::vector<Expr>());
 914   cnames.push_back(std::vector<std::string>());
 915   cargs.push_back(std::vector<std::vector<CVC4::Type> >());
 916   allow_const.push_back(false);
 917   unresolved_gterm_sym.push_back(std::vector< std::string >());
 918   return true;
 919 }
 920
 921 bool Smt2::popSygusDatatypeDef( std::vector< CVC4::Datatype >& datatypes,
 922                                  std::vector< CVC4::Type>& sorts,
 923                                  std::vector< std::vector<CVC4::Expr> >& ops,
 924                                  std::vector< std::vector<std::string> >& cnames,
 925                                  std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 926                                  std::vector< bool >& allow_const,
 927                                  std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 928   sorts.pop_back();
 929   datatypes.pop_back();
 930   ops.pop_back();
 931   cnames.pop_back();
 932   cargs.pop_back();
 933   allow_const.pop_back();
 934   unresolved_gterm_sym.pop_back();
 935   return true;
 936 }
 937
 938 Type Smt2::processSygusNestedGTerm( int sub_dt_index, std::string& sub_dname, std::vector< CVC4::Datatype >& datatypes,
 939                                     std::vector< CVC4::Type>& sorts,
 940                                     std::vector< std::vector<CVC4::Expr> >& ops,
 941                                     std::vector< std::vector<std::string> >& cnames,
 942                                     std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 943                                     std::vector< bool >& allow_const,
 944                                     std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 945                                     std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
 946                                     std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr, Type sub_ret ) {
 947   Type t = sub_ret;
 948   Debug("parser-sygus") << "Argument is ";
 949   if( t.isNull() ){
 950     //then, it is the datatype we constructed, which should have a single constructor
 951     t = mkUnresolvedType(sub_dname);
 952     Debug("parser-sygus") << "inline flattening of (auxiliary, local) datatype " << t << std::endl;
 953     Debug("parser-sygus") << ": to compute type, construct ground term witnessing the grammar, #cons=" << cargs[sub_dt_index].size() << std::endl;
 954     if( cargs[sub_dt_index].empty() ){
 955       parseError(std::string("Internal error : datatype for nested gterm does not have a constructor."));
 956     }
 957     Expr sop = ops[sub_dt_index][0];
 958     Type curr_t;
 959     if( sop.getKind() != kind::BUILTIN && ( sop.isConst() || cargs[sub_dt_index][0].empty() ) ){
 960       curr_t = sop.getType();
 961       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;
 962       sygus_to_builtin_expr[t] = sop;
 963       //store that term sop has dedicated sygus type t
 964       if( d_sygus_bound_var_type.find( sop )==d_sygus_bound_var_type.end() ){
 965         d_sygus_bound_var_type[sop] = t;
 966       }
 967     }else{
 968       std::vector< Expr > children;
 969       if( sop.getKind() != kind::BUILTIN ){
 970         children.push_back( sop );
 971       }
 972       for( unsigned i=0; i<cargs[sub_dt_index][0].size(); i++ ){
 973         std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[sub_dt_index][0][i] );
 974         if( it==sygus_to_builtin_expr.end() ){
 975           if( sygus_to_builtin.find( cargs[sub_dt_index][0][i] )==sygus_to_builtin.end() ){
 976             std::stringstream ss;
 977             ss << "Missing builtin type for type " << cargs[sub_dt_index][0][i] << "!" << std::endl;
 978             ss << "Builtin types are currently : " << std::endl;
 979             for( std::map< CVC4::Type, CVC4::Type >::iterator itb = sygus_to_builtin.begin(); itb != sygus_to_builtin.end(); ++itb ){
 980               ss << "  " << itb->first << " -> " << itb->second << std::endl;
 981             }
 982             parseError(ss.str());
 983           }
 984           Type bt = sygus_to_builtin[cargs[sub_dt_index][0][i]];
 985           Debug("parser-sygus") << ":  child " << i << " introduce type elem for " << cargs[sub_dt_index][0][i] << " " << bt << std::endl;
 986           std::stringstream ss;
 987           ss << t << "_x_" << i;
 988           Expr bv = mkBoundVar(ss.str(), bt);
 989           children.push_back( bv );
 990           d_sygus_bound_var_type[bv] = cargs[sub_dt_index][0][i];
 991         }else{
 992           Debug("parser-sygus") << ":  child " << i << " existing sygus to builtin expr : " << it->second << std::endl;
 993           children.push_back( it->second );
 994         }
 995       }
 996       Kind sk = sop.getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(sop);
 997       Debug("parser-sygus") << ": operator " << sop << " with " << sop.getKind() << " " << sk << std::endl;
 998       Expr e = getExprManager()->mkExpr( sk, children );
 999       Debug("parser-sygus") << ": constructed " << e << ", which has type " << e.getType() << std::endl;
1000       curr_t = e.getType();
1001       sygus_to_builtin_expr[t] = e;
1002     }
1003     sorts[sub_dt_index] = curr_t;
1004     sygus_to_builtin[t] = curr_t;
1005   }else{
1006     Debug("parser-sygus") << "simple argument " << t << std::endl;
1007     Debug("parser-sygus") << "...removing " << datatypes.back().getName() << std::endl;
1008     //otherwise, datatype was unecessary
1009     //pop argument datatype definition
1010     popSygusDatatypeDef( datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
1011   }
1012   return t;
1013 }
1014
1015 void Smt2::processSygusLetConstructor( std::vector< CVC4::Expr >& let_vars,
1016                                        int index,
1017                                        std::vector< CVC4::Datatype >& datatypes,
1018                                        std::vector< CVC4::Type>& sorts,
1019                                        std::vector< std::vector<CVC4::Expr> >& ops,
1020                                        std::vector< std::vector<std::string> >& cnames,
1021                                        std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
1022                                        std::vector<CVC4::Expr>& sygus_vars,
1023                                        std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
1024                                        std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr ) {
1025   std::vector< CVC4::Expr > let_define_args;
1026   Expr let_body;
1027   int dindex = cargs[index].size()-1;
1028   Debug("parser-sygus") << "Process let constructor for datatype " << datatypes[index].getName() << ", #subtypes = " << cargs[index][dindex].size() << std::endl;
1029   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1030     Debug("parser-sygus") << "  " << i << " : " << cargs[index][dindex][i] << std::endl;
1031     if( i+1==cargs[index][dindex].size() ){
1032       std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[index][dindex][i] );
1033       if( it!=sygus_to_builtin_expr.end() ){
1034         let_body = it->second;
1035       }else{
1036         std::stringstream ss;
1037         ss << datatypes[index].getName() << "_body";
1038         let_body = mkBoundVar(ss.str(), sygus_to_builtin[cargs[index][dindex][i]]);
1039         d_sygus_bound_var_type[let_body] = cargs[index][dindex][i];
1040       }
1041     }
1042   }
1043   Debug("parser-sygus") << std::endl;
1044   Debug("parser-sygus") << "Body is " << let_body << std::endl;
1045   Debug("parser-sygus") << "# let vars = " << let_vars.size() << std::endl;
1046   for( unsigned i=0; i<let_vars.size(); i++ ){
1047     Debug("parser-sygus") << "  let var " << i << " : " << let_vars[i] << " " << let_vars[i].getType() << std::endl;
1048     let_define_args.push_back( let_vars[i] );
1049   }
1050   /*
1051   Debug("parser-sygus") << "index = " << index << ", start index = " << start_index << ", #Current datatypes = " << datatypes.size() << std::endl;
1052   for( unsigned i=start_index; i<datatypes.size(); i++ ){
1053     Debug("parser-sygus") << "  datatype " << i << " : " << datatypes[i].getName() << ", #cons = " << cargs[i].size() << std::endl;
1054     if( !cargs[i].empty() ){
1055       Debug("parser-sygus") << "  operator 0 is " << ops[i][0] << std::endl;
1056       Debug("parser-sygus") << "  cons 0 has " << cargs[i][0].size() << " sub fields." << std::endl;
1057       for( unsigned j=0; j<cargs[i][0].size(); j++ ){
1058         Type bt = sygus_to_builtin[cargs[i][0][j]];
1059         Debug("parser-sygus") << "    cons 0, selector " << j << " : " << cargs[i][0][j] << " " << bt << std::endl;
1060       }
1061     }
1062   }
1063   */
1064   //last argument is the return, pop
1065   cargs[index][dindex].pop_back();
1066   collectSygusLetArgs( let_body, cargs[index][dindex], let_define_args );
1067
1068   Debug("parser-sygus") << "Make define-fun with " << cargs[index][dindex].size() << " arguments..." << std::endl;
1069   std::vector<CVC4::Type> fsorts;
1070   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1071     Debug("parser-sygus") << "  " << i << " : " << let_define_args[i] << " " << let_define_args[i].getType() << " " << cargs[index][dindex][i] << std::endl;
1072     fsorts.push_back(let_define_args[i].getType());
1073   }
1074
1075   Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1076   std::stringstream ss;
1077   ss << datatypes[index].getName() << "_let";
1078   Expr let_func = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1079   d_sygus_defined_funs.push_back( let_func );
1080   preemptCommand( new DefineFunctionCommand(ss.str(), let_func, let_define_args, let_body) );
1081
1082   ops[index].pop_back();
1083   ops[index].push_back( let_func );
1084   cnames[index].pop_back();
1085   cnames[index].push_back(ss.str());
1086
1087   //mark function as let constructor
1088   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() );
1089   d_sygus_let_func_to_body[let_func] = let_body;
1090   d_sygus_let_func_to_num_input_vars[let_func] = let_vars.size();
1091 }
1092
1093
1094 void Smt2::collectSygusLetArgs( CVC4::Expr e, std::vector< CVC4::Type >& sygusArgs, std::vector< CVC4::Expr >& builtinArgs ) {
1095   if( e.getKind()==kind::BOUND_VARIABLE ){
1096     if( std::find( builtinArgs.begin(), builtinArgs.end(), e )==builtinArgs.end() ){
1097       builtinArgs.push_back( e );
1098       sygusArgs.push_back( d_sygus_bound_var_type[e] );
1099       if( d_sygus_bound_var_type[e].isNull() ){
1100         std::stringstream ss;
1101         ss << "While constructing body of let gterm, can't map " << e << " to sygus type." << std::endl;
1102         parseError(ss.str());
1103       }
1104     }
1105   }else{
1106     for( unsigned i=0; i<e.getNumChildren(); i++ ){
1107       collectSygusLetArgs( e[i], sygusArgs, builtinArgs );
1108     }
1109   }
1110 }
1111
1112 void Smt2::setSygusStartIndex( std::string& fun, int startIndex,
1113                                std::vector< CVC4::Datatype >& datatypes,
1114                                std::vector< CVC4::Type>& sorts,
1115                                std::vector< std::vector<CVC4::Expr> >& ops ) {
1116   if( startIndex>0 ){
1117     CVC4::Datatype tmp_dt = datatypes[0];
1118     Type tmp_sort = sorts[0];
1119     std::vector< Expr > tmp_ops;
1120     tmp_ops.insert( tmp_ops.end(), ops[0].begin(), ops[0].end() );
1121     datatypes[0] = datatypes[startIndex];
1122     sorts[0] = sorts[startIndex];
1123     ops[0].clear();
1124     ops[0].insert( ops[0].end(), ops[startIndex].begin(), ops[startIndex].end() );
1125     datatypes[startIndex] = tmp_dt;
1126     sorts[startIndex] = tmp_sort;
1127     ops[startIndex].clear();
1128     ops[startIndex].insert( ops[startIndex].begin(), tmp_ops.begin(), tmp_ops.end() );
1129   }else if( startIndex<0 ){
1130     std::stringstream ss;
1131     ss << "warning: no symbol named Start for synth-fun " << fun << std::endl;
1132     warning(ss.str());
1133   }
1134 }
1135
1136 void Smt2::defineSygusFuns() {
1137   // only define each one once
1138   while(d_nextSygusFun < d_sygusFuns.size()) {
1139     std::pair<std::string, Expr> p = d_sygusFuns[d_nextSygusFun];
1140     std::string fun = p.first;
1141     Debug("parser-sygus") << "Sygus : define fun " << fun << std::endl;
1142     Expr eval = p.second;
1143     FunctionType evalType = eval.getType();
1144     std::vector<Type> argTypes = evalType.getArgTypes();
1145     Type rangeType = evalType.getRangeType();
1146     Debug("parser-sygus") << "...eval type : " << evalType << ", #args=" << argTypes.size() << std::endl;
1147
1148     // first make the function type
1149     std::vector<Expr> sygusVars;
1150     std::vector<Type> funType;
1151     for(size_t j = 1; j < argTypes.size(); ++j) {
1152       funType.push_back(argTypes[j]);
1153       std::stringstream ss;
1154       ss << fun << "_v_" << j;
1155       sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), argTypes[j]));
1156     }
1157     Type funt;
1158     if( !funType.empty() ){
1159       funt = getExprManager()->mkFunctionType(funType, rangeType);
1160       Debug("parser-sygus") << "...eval function type : " << funt << std::endl;
1161
1162       // copy the bound vars
1163       /*
1164       std::vector<Expr> sygusVars;
1165       //std::vector<Type> types;
1166       for(size_t i = 0; i < d_sygusVars.size(); ++i) {
1167         std::stringstream ss;
1168         ss << d_sygusVars[i];
1169         Type type = d_sygusVars[i].getType();
1170         sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), type));
1171         //types.push_back(type);
1172       }
1173       Debug("parser-sygus") << "...made vars, #vars=" << sygusVars.size() << std::endl;
1174       */
1175
1176       //Type t = getExprManager()->mkFunctionType(types, rangeType);
1177       //Debug("parser-sygus") << "...function type : " << t << std::endl;
1178     }else{
1179       funt = rangeType;
1180     }
1181     Expr lambda = mkFunction(fun, funt, ExprManager::VAR_FLAG_DEFINED);
1182     Debug("parser-sygus") << "...made function : " << lambda << std::endl;
1183     std::vector<Expr> applyv;
1184     Expr funbv = getExprManager()->mkBoundVar(std::string("f") + fun, argTypes[0]);
1185     d_sygusFunSymbols.push_back(funbv);
1186     applyv.push_back(eval);
1187     applyv.push_back(funbv);
1188     for(size_t i = 0; i < sygusVars.size(); ++i) {
1189       applyv.push_back(sygusVars[i]);
1190     }
1191     Expr apply = getExprManager()->mkExpr(kind::APPLY_UF, applyv);
1192     Debug("parser-sygus") << "...made apply " << apply << std::endl;
1193     Debug("parser-sygus") << "--> Define " << fun << " as " << lambda << " " << apply << std::endl;
1194     Command* cmd = new DefineFunctionCommand(fun, lambda, sygusVars, apply);
1195     preemptCommand(cmd);
1196
1197     ++d_nextSygusFun;
1198   }
1199 }
1200
1201 void Smt2::mkSygusDatatype( CVC4::Datatype& dt, std::vector<CVC4::Expr>& ops,
1202                             std::vector<std::string>& cnames, std::vector< std::vector< CVC4::Type > >& cargs,
1203                             std::vector<std::string>& unresolved_gterm_sym,
1204                             std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin ) {
1205   Debug("parser-sygus") << "Making sygus datatype " << dt.getName() << std::endl;
1206   Debug("parser-sygus") << "  add constructors..." << std::endl;
1207   for( int i=0; i<(int)cnames.size(); i++ ){
1208     bool is_dup = false;
1209     bool is_dup_op = false;
1210     Expr let_body;
1211     std::vector< Expr > let_args;
1212     unsigned let_num_input_args = 0;
1213     for( int j=0; j<i; j++ ){
1214       if( ops[i]==ops[j] ){
1215         is_dup_op = true;
1216         if( cargs[i].size()==cargs[j].size() ){
1217           is_dup = true;
1218           for( unsigned k=0; k<cargs[i].size(); k++ ){
1219             if( cargs[i][k]!=cargs[j][k] ){
1220               is_dup = false;
1221               break;
1222             }
1223           }
1224         }
1225         if( is_dup ){
1226           break;
1227         }
1228       }
1229     }
1230     if( is_dup ){
1231       Debug("parser-sygus") << "--> Duplicate gterm : " << ops[i] << " at " << i << std::endl;
1232       ops.erase( ops.begin() + i, ops.begin() + i + 1 );
1233       cnames.erase( cnames.begin() + i, cnames.begin() + i + 1 );
1234       cargs.erase( cargs.begin() + i, cargs.begin() + i + 1 );
1235       i--;
1236     }else if( is_dup_op ){
1237       Debug("parser-sygus") << "--> Duplicate gterm operator : " << ops[i] << " at " << i << std::endl;
1238       //make into define-fun
1239       std::vector<CVC4::Type> fsorts;
1240       for( unsigned j=0; j<cargs[i].size(); j++ ){
1241         Type bt = sygus_to_builtin[cargs[i][j]];
1242         std::stringstream ss;
1243         ss << dt.getName() << "_x_" << i << "_" << j;
1244         Expr v = mkBoundVar(ss.str(), bt);
1245         let_args.push_back( v );
1246         fsorts.push_back( bt );
1247         Debug("parser-sygus") << ": var " << i << " " << v << " with type " << bt << " from " << cargs[i][j] << std::endl;
1248       }
1249       //make the let_body
1250       std::vector< Expr > children;
1251       if( ops[i].getKind() != kind::BUILTIN ){
1252         children.push_back( ops[i] );
1253       }
1254       children.insert( children.end(), let_args.begin(), let_args.end() );
1255       Kind sk = ops[i].getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(ops[i]);
1256       Debug("parser-sygus") << ": replace " << ops[i] << " " << ops[i].getKind() << " " << sk << std::endl;
1257       let_body = getExprManager()->mkExpr( sk, children );
1258       Debug("parser-sygus") << ": new body of function is " << let_body << std::endl;
1259
1260       Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1261       Debug("parser-sygus") << ": function type is " << ft << std::endl;
1262       std::stringstream ss;
1263       ss << dt.getName() << "_df_" << i;
1264       //replace operator and name
1265       ops[i] = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1266       cnames[i] = ss.str();
1267       d_sygus_defined_funs.push_back( ops[i] );
1268       preemptCommand( new DefineFunctionCommand(ss.str(), ops[i], let_args, let_body) );
1269       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, 0 );
1270     }else{
1271       std::map< CVC4::Expr, CVC4::Expr >::iterator it = d_sygus_let_func_to_body.find( ops[i] );
1272       if( it!=d_sygus_let_func_to_body.end() ){
1273         let_body = it->second;
1274         let_args.insert( let_args.end(), d_sygus_let_func_to_vars[ops[i]].begin(), d_sygus_let_func_to_vars[ops[i]].end() );
1275         let_num_input_args = d_sygus_let_func_to_num_input_vars[ops[i]];
1276       }
1277       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, let_num_input_args );
1278     }
1279   }
1280   Debug("parser-sygus") << "  add constructors for unresolved symbols..." << std::endl;
1281   if( !unresolved_gterm_sym.empty() ){
1282     std::vector< Type > types;
1283     Debug("parser-sygus") << "...resolve " << unresolved_gterm_sym.size() << " symbols..." << std::endl;
1284     for( unsigned i=0; i<unresolved_gterm_sym.size(); i++ ){
1285       Debug("parser-sygus") << "  resolve : " << unresolved_gterm_sym[i] << std::endl;
1286       if( isUnresolvedType(unresolved_gterm_sym[i]) ){
1287         Debug("parser-sygus") << "    it is an unresolved type." << std::endl;
1288         Type t = getSort(unresolved_gterm_sym[i]);
1289         if( std::find( types.begin(), types.end(), t )==types.end() ){
1290           types.push_back( t );
1291           //identity element
1292           Type bt = dt.getSygusType();
1293           Debug("parser-sygus") << ":  make identity function for " << bt << ", argument type " << t << std::endl;
1294           std::stringstream ss;
1295           ss << t << "_x_id";
1296           Expr let_body = mkBoundVar(ss.str(), bt);
1297           std::vector< Expr > let_args;
1298           let_args.push_back( let_body );
1299           //make the identity function
1300           Type ft = getExprManager()->mkFunctionType(bt, bt);
1301           std::stringstream ssid;
1302           ssid << unresolved_gterm_sym[i] << "_id";
1303           Expr id_op = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1304           d_sygus_defined_funs.push_back( id_op );
1305           preemptCommand( new DefineFunctionCommand(ssid.str(), id_op, let_args, let_body) );
1306           //make the sygus argument list
1307           std::vector< Type > id_carg;
1308           id_carg.push_back( t );
1309           addSygusDatatypeConstructor( dt, id_op, unresolved_gterm_sym[i], id_carg, let_body, let_args, 0 );
1310           //add to operators
1311           ops.push_back( id_op );
1312         }
1313       }else{
1314         Debug("parser-sygus") << "    ignore. (likely a free let variable)" << std::endl;
1315       }
1316     }
1317   }
1318
1319 }
1320
1321 void Smt2::addSygusDatatypeConstructor( CVC4::Datatype& dt, CVC4::Expr op, std::string& cname, std::vector< CVC4::Type >& cargs,
1322                                         CVC4::Expr& let_body, std::vector< CVC4::Expr >& let_args, unsigned let_num_input_args ) {
1323   Debug("parser-sygus") << "--> Add constructor " << cname << " to " << dt.getName() << std::endl;
1324   if( !let_body.isNull() ){
1325     Debug("parser-sygus") << "    let body = " << let_body << ", args = " << let_args.size() << "," << let_num_input_args << std::endl;
1326     //TODO : remove arguments not occurring in body
1327     //if this is a self identity function, ignore
1328     if( let_args.size()==0 && let_args[0]==let_body ){
1329       Debug("parser-sygus") << "    identity function " << cargs[0] << " to " << dt.getName() << std::endl;
1330       //TODO
1331     }
1332   }
1333   std::string name = dt.getName() + "_" + cname;
1334   std::string testerId("is-");
1335   testerId.append(name);
1336   checkDeclaration(name, CHECK_UNDECLARED, SYM_VARIABLE);
1337   checkDeclaration(testerId, CHECK_UNDECLARED, SYM_VARIABLE);
1338   CVC4::DatatypeConstructor c(name, testerId );
1339   c.setSygus( op, let_body, let_args, let_num_input_args );
1340   for( unsigned j=0; j<cargs.size(); j++ ){
1341     Debug("parser-sygus-debug") << "  arg " << j << " : " << cargs[j] << std::endl;
1342     std::stringstream sname;
1343     sname << name << "_" << j;
1344     c.addArg(sname.str(), cargs[j]);
1345   }
1346   dt.addConstructor(c);
1347 }
1348
1349
1350 // i is index in datatypes/ops
1351 // j is index is datatype
1352 Expr Smt2::getSygusAssertion( std::vector<DatatypeType>& datatypeTypes, std::vector< std::vector<Expr> >& ops,
1353                               std::map<DatatypeType, Expr>& evals, std::vector<Expr>& terms,
1354                               Expr eval, const Datatype& dt, size_t i, size_t j ) {
1355   const DatatypeConstructor& ctor = dt[j];
1356   Debug("parser-sygus") << "Sygus : process constructor " << j << " : " << dt[j] << std::endl;
1357   std::vector<Expr> bvs, extraArgs;
1358   for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1359     std::string vname = "v_" + ctor[k].getName();
1360     Expr bv = getExprManager()->mkBoundVar(vname, SelectorType(ctor[k].getType()).getRangeType());
1361     bvs.push_back(bv);
1362     extraArgs.push_back(bv);
1363   }
1364   if( !terms[0].isNull() ){
1365     bvs.insert(bvs.end(), terms[0].begin(), terms[0].end());
1366   }
1367   Expr bvl;
1368   if( !bvs.empty() ){
1369     bvl = getExprManager()->mkExpr(kind::BOUND_VAR_LIST, bvs);
1370   }
1371   Debug("parser-sygus") << "...made bv list " << bvl << std::endl;
1372   std::vector<Expr> patv;
1373   patv.push_back(eval);
1374   std::vector<Expr> applyv;
1375   applyv.push_back(ctor.getConstructor());
1376   applyv.insert(applyv.end(), extraArgs.begin(), extraArgs.end());
1377   for(size_t k = 0; k < applyv.size(); ++k) {
1378   }
1379   Expr cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1380   Debug("parser-sygus") << "...made eval ctor apply " << cpatv << std::endl;
1381   patv.push_back(cpatv);
1382   if( !terms[0].isNull() ){
1383     patv.insert(patv.end(), terms[0].begin(), terms[0].end());
1384   }
1385   Expr evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1386   Debug("parser-sygus") << "...made eval apply " << evalApply << std::endl;
1387   std::vector<Expr> builtApply;
1388   for(size_t k = 0; k < extraArgs.size(); ++k) {
1389     std::vector<Expr> patvb;
1390     patvb.push_back(evals[DatatypeType(extraArgs[k].getType())]);
1391     patvb.push_back(extraArgs[k]);
1392     if( !terms[0].isNull() ){
1393       patvb.insert(patvb.end(), terms[0].begin(), terms[0].end());
1394     }
1395     Debug("parser-sygus-debug") << "...add to built apply " << evals[DatatypeType(extraArgs[k].getType())] << " " << extraArgs[k] << " " << extraArgs[k].getType() << std::endl;
1396     builtApply.push_back(getExprManager()->mkExpr(kind::APPLY_UF, patvb));
1397     Debug("parser-sygus-debug") << "...added " << builtApply.back() << std::endl;
1398   }
1399   for(size_t k = 0; k < builtApply.size(); ++k) {
1400   }
1401   Expr builtTerm;
1402   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;
1403   if( ops[i][j].getKind() != kind::BUILTIN ){
1404     Kind ok = kind::UNDEFINED_KIND;
1405     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() ){
1406       ok = kind::APPLY;
1407     }else{
1408       Type t = ops[i][j].getType();
1409       if( t.isConstructor() ){
1410         ok = kind::APPLY_CONSTRUCTOR;
1411       }else if( t.isSelector() ){
1412         ok = kind::APPLY_SELECTOR;
1413       }else if( t.isTester() ){
1414         ok = kind::APPLY_TESTER;
1415       }else{
1416         ok = getExprManager()->operatorToKind( ops[i][j] );
1417       }
1418     }
1419     Debug("parser-sygus") << "...processed operator kind : " << ok << std::endl;
1420     if( ok!=kind::UNDEFINED_KIND ){
1421       builtTerm = getExprManager()->mkExpr(ok, ops[i][j], builtApply);
1422     }else{
1423       builtTerm = ops[i][j];
1424     }
1425   }else{
1426     if( !builtApply.empty() ){
1427       builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1428     }else{
1429       builtTerm = ops[i][j];
1430     }
1431   }
1432   Debug("parser-sygus") << "...made built term " << builtTerm << std::endl;
1433   Expr assertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1434   if( !bvl.isNull() ){
1435     Expr pattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1436     pattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, pattern);
1437     assertion = getExprManager()->mkExpr(kind::FORALL, bvl, assertion, pattern);
1438   }
1439   Debug("parser-sygus") << "...made assertion " << assertion << std::endl;
1440
1441   //linearize multiplication if possible
1442   if( builtTerm.getKind()==kind::MULT ){
1443     for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1444       Type at = SelectorType(ctor[k].getType()).getRangeType();
1445       if( at.isDatatype() ){
1446         DatatypeType atd = (DatatypeType)SelectorType(ctor[k].getType()).getRangeType();
1447         Debug("parser-sygus") << "Argument " << k << " " << atd << std::endl;
1448         std::vector<DatatypeType>::iterator itd = std::find( datatypeTypes.begin(), datatypeTypes.end(), atd );
1449         if( itd!=datatypeTypes.end() ){
1450           Debug("parser-sygus2") << "Exists in datatypeTypes." << std::endl;
1451           unsigned index = itd-datatypeTypes.begin();
1452           Debug("parser-sygus2") << "index = " << index << std::endl;
1453           bool isConst = true;
1454           for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1455             Debug("parser-sygus2") << "ops[" << cc << "]=" << ops[index][cc] << std::endl;
1456             if( ops[index][cc].getKind() != kind::CONST_RATIONAL ){
1457               isConst = false;
1458               break;
1459             }
1460           }
1461           if( isConst ){
1462             Debug("parser-sygus") << "Linearize multiplication " << ctor << " based on argument " << k << std::endl;
1463             const Datatype & atdd = atd.getDatatype();
1464             std::vector<Expr> assertions;
1465             std::vector<Expr> nbvs;
1466             for( unsigned a=0; a<bvl.getNumChildren(); a++ ){
1467               if( a!=k ){
1468                 nbvs.push_back( bvl[a] );
1469               }
1470             }
1471             Expr nbvl = getExprManager()->mkExpr( kind::BOUND_VAR_LIST, nbvs );
1472             for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1473               //Make new assertion based on partially instantiating existing
1474               applyv[k+1] = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, atdd[cc].getConstructor());
1475               Debug("parser-sygus") << "applyv " << applyv[k+1] << std::endl;
1476               cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1477               Debug("parser-sygus") << "cpatv " << cpatv << std::endl;
1478               patv[1] = cpatv;
1479               evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1480               Debug("parser-sygus") << "evalApply " << evalApply << std::endl;
1481               builtApply[k] = ops[index][cc];
1482               Debug("parser-sygus") << "builtApply " << builtApply[k] << std::endl;
1483               builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1484               Debug("parser-sygus") << "builtTerm " << builtTerm << std::endl;
1485               Expr eassertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1486               Expr epattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1487               epattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, epattern);
1488               eassertion = getExprManager()->mkExpr(kind::FORALL, nbvl, eassertion, epattern);
1489               assertions.push_back( eassertion );
1490             }
1491             assertion = assertions.size()==1 ? assertions[0] : getExprManager()->mkExpr( kind::AND, assertions );
1492             Debug("parser-sygus") << "...(linearized) assertion is: " << assertion << std::endl;
1493           }
1494         }
1495       }
1496     }
1497   }
1498   return assertion;
1499 }
1500
1501 const void Smt2::getSygusPrimedVars( std::vector<Expr>& vars, bool isPrimed ) {
1502   for( unsigned i=0; i<d_sygusVars.size(); i++ ){
1503     Expr v = d_sygusVars[i];
1504     std::map< Expr, bool >::iterator it = d_sygusVarPrimed.find( v );
1505     if( it!=d_sygusVarPrimed.end() ){
1506       if( it->second==isPrimed ){
1507         vars.push_back( v );
1508       }
1509     }else{
1510       //should never happen
1511     }
1512   }
1513 }
1514
1515 }/* CVC4::parser namespace */
1516 }/* CVC4 namespace */