src/parser/smt2/smt2.cpp

   1 /*********************                                                        */
   2 /*! \file smt2.cpp
   3  ** \verbatim
   4  ** Original author: Christopher L. Conway
   5  ** Major contributors: Kshitij Bansal, Morgan Deters
   6  ** Minor contributors (to current version): Andrew Reynolds, Clark Barrett, Tianyi Liang
   7  ** This file is part of the CVC4 project.
   8  ** Copyright (c) 2009-2014  New York University and The University of Iowa
   9  ** See the file COPYING in the top-level source directory for licensing
  10  ** information.\endverbatim
  11  **
  12  ** \brief Definitions of SMT2 constants.
  13  **
  14  ** Definitions of SMT2 constants.
  15  **/
  16 #include "parser/smt2/smt2.h"
  17
  18
  19 #include "expr/type.h"
  20 #include "parser/antlr_input.h"
  21 #include "parser/parser.h"
  22 #include "parser/smt1/smt1.h"
  23 #include "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     break;
 230
 231   case THEORY_DATATYPES:
 232     Parser::addOperator(kind::APPLY_CONSTRUCTOR);
 233     Parser::addOperator(kind::APPLY_TESTER);
 234     Parser::addOperator(kind::APPLY_SELECTOR);
 235     Parser::addOperator(kind::APPLY_SELECTOR_TOTAL);
 236     break;
 237
 238   case THEORY_STRINGS:
 239     defineType("String", getExprManager()->stringType());
 240     defineType("Int", getExprManager()->integerType());
 241     addStringOperators();
 242     break;
 243
 244   case THEORY_UF:
 245     Parser::addOperator(kind::APPLY_UF);
 246     break;
 247
 248   case THEORY_FP:
 249     defineType("RoundingMode", getExprManager()->roundingModeType());
 250     defineType("Float16", getExprManager()->mkFloatingPointType(5, 11));
 251     defineType("Float32", getExprManager()->mkFloatingPointType(8, 24));
 252     defineType("Float64", getExprManager()->mkFloatingPointType(11, 53));
 253     defineType("Float128", getExprManager()->mkFloatingPointType(15, 113));
 254     addFloatingPointOperators();
 255     break;
 256
 257   default:
 258     std::stringstream ss;
 259     ss << "internal error: unsupported theory " << theory;
 260     throw ParserException(ss.str());
 261   }
 262 }
 263
 264 void Smt2::addOperator(Kind kind, const std::string& name) {
 265   Debug("parser") << "Smt2::addOperator( " << kind << ", " << name << " )"
 266                   << std::endl;
 267   Parser::addOperator(kind);
 268   operatorKindMap[name] = kind;
 269 }
 270
 271 Kind Smt2::getOperatorKind(const std::string& name) const {
 272   // precondition: isOperatorEnabled(name)
 273   return operatorKindMap.find(name)->second;
 274 }
 275
 276 bool Smt2::isOperatorEnabled(const std::string& name) const {
 277   return operatorKindMap.find(name) != operatorKindMap.end();
 278 }
 279
 280 bool Smt2::isTheoryEnabled(Theory theory) const {
 281   switch(theory) {
 282   case THEORY_ARRAYS:
 283     return d_logic.isTheoryEnabled(theory::THEORY_ARRAY);
 284   case THEORY_BITVECTORS:
 285     return d_logic.isTheoryEnabled(theory::THEORY_BV);
 286   case THEORY_CORE:
 287     return true;
 288   case THEORY_DATATYPES:
 289     return d_logic.isTheoryEnabled(theory::THEORY_DATATYPES);
 290   case THEORY_INTS:
 291     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 292       d_logic.areIntegersUsed() && ( !d_logic.areRealsUsed() );
 293   case THEORY_REALS:
 294     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 295       ( !d_logic.areIntegersUsed() ) && d_logic.areRealsUsed();
 296   case THEORY_REALS_INTS:
 297     return d_logic.isTheoryEnabled(theory::THEORY_ARITH) &&
 298       d_logic.areIntegersUsed() && d_logic.areRealsUsed();
 299   case THEORY_QUANTIFIERS:
 300     return d_logic.isQuantified();
 301   case THEORY_SETS:
 302     return d_logic.isTheoryEnabled(theory::THEORY_SETS);
 303   case THEORY_STRINGS:
 304     return d_logic.isTheoryEnabled(theory::THEORY_STRINGS);
 305   case THEORY_UF:
 306     return d_logic.isTheoryEnabled(theory::THEORY_UF);
 307   case THEORY_FP:
 308     return d_logic.isTheoryEnabled(theory::THEORY_FP);
 309   default:
 310     std::stringstream ss;
 311     ss << "internal error: unsupported theory " << theory;
 312     throw ParserException(ss.str());
 313   }
 314 }
 315
 316 bool Smt2::logicIsSet() {
 317   return d_logicSet;
 318 }
 319
 320 void Smt2::reset() {
 321   d_logicSet = false;
 322   d_logic = LogicInfo();
 323   operatorKindMap.clear();
 324   d_lastNamedTerm = std::pair<Expr, std::string>();
 325   d_unsatCoreNames = std::stack< std::map<Expr, std::string> >();
 326   this->Parser::reset();
 327
 328   d_unsatCoreNames.push(std::map<Expr, std::string>());
 329   if( !strictModeEnabled() ) {
 330     addTheory(Smt2::THEORY_CORE);
 331   }
 332 }
 333
 334 void Smt2::resetAssertions() {
 335   this->Parser::reset();
 336 }
 337
 338 void Smt2::setLogic(std::string name) {
 339   if(sygus()) {
 340     if(name == "Arrays") {
 341       name = "AUF";
 342     } else if(name == "Reals") {
 343       name = "UFLRA";
 344     } else if(name == "LIA") {
 345       name = "UFLIA";
 346     } else if(name == "LRA") {
 347       name = "UFLRA";
 348     } else if(name == "LIRA") {
 349       name = "UFLIRA";
 350     } else if(name == "BV") {
 351       name = "UFBV";
 352     } else if(name == "ALL_SUPPORTED") {
 353       //no change
 354     } else {
 355       std::stringstream ss;
 356       ss << "Unknown SyGuS background logic `" << name << "'";
 357       parseError(ss.str());
 358     }
 359   }
 360
 361   d_logicSet = true;
 362   if(logicIsForced()) {
 363     d_logic = getForcedLogic();
 364   } else {
 365     d_logic = name;
 366   }
 367
 368   // Core theory belongs to every logic
 369   addTheory(THEORY_CORE);
 370
 371   if(d_logic.isTheoryEnabled(theory::THEORY_UF)) {
 372     addTheory(THEORY_UF);
 373   }
 374
 375   if(d_logic.isTheoryEnabled(theory::THEORY_ARITH)) {
 376     if(d_logic.areIntegersUsed()) {
 377       if(d_logic.areRealsUsed()) {
 378         addTheory(THEORY_REALS_INTS);
 379       } else {
 380         addTheory(THEORY_INTS);
 381       }
 382     } else if(d_logic.areRealsUsed()) {
 383       addTheory(THEORY_REALS);
 384     }
 385   }
 386
 387   if(d_logic.isTheoryEnabled(theory::THEORY_ARRAY)) {
 388     addTheory(THEORY_ARRAYS);
 389   }
 390
 391   if(d_logic.isTheoryEnabled(theory::THEORY_BV)) {
 392     addTheory(THEORY_BITVECTORS);
 393   }
 394
 395   if(d_logic.isTheoryEnabled(theory::THEORY_DATATYPES)) {
 396     addTheory(THEORY_DATATYPES);
 397   }
 398
 399   if(d_logic.isTheoryEnabled(theory::THEORY_SETS)) {
 400     addTheory(THEORY_SETS);
 401   }
 402
 403   if(d_logic.isTheoryEnabled(theory::THEORY_STRINGS)) {
 404     addTheory(THEORY_STRINGS);
 405   }
 406
 407   if(d_logic.isQuantified()) {
 408     addTheory(THEORY_QUANTIFIERS);
 409   }
 410
 411   if (d_logic.isTheoryEnabled(theory::THEORY_FP)) {
 412     addTheory(THEORY_FP);
 413   }
 414
 415 }/* Smt2::setLogic() */
 416
 417 void Smt2::setInfo(const std::string& flag, const SExpr& sexpr) {
 418   // TODO: ???
 419 }
 420
 421 void Smt2::setOption(const std::string& flag, const SExpr& sexpr) {
 422   // TODO: ???
 423 }
 424
 425 void Smt2::checkThatLogicIsSet() {
 426   if( ! logicIsSet() ) {
 427     if(strictModeEnabled()) {
 428       parseError("set-logic must appear before this point.");
 429     } else {
 430       if(sygus()) {
 431         setLogic("LIA");
 432       } else {
 433         warning("No set-logic command was given before this point.");
 434         warning("CVC4 will assume the non-standard ALL_SUPPORTED logic.");
 435         warning("Consider setting a stricter logic for (likely) better performance.");
 436         warning("To suppress this warning in the future use (set-logic ALL_SUPPORTED).");
 437
 438         setLogic("ALL_SUPPORTED");
 439       }
 440
 441       Command* c = new SetBenchmarkLogicCommand("ALL_SUPPORTED");
 442       c->setMuted(true);
 443       preemptCommand(c);
 444     }
 445   }
 446 }
 447
 448 /* The include are managed in the lexer but called in the parser */
 449 // Inspired by http://www.antlr3.org/api/C/interop.html
 450
 451 static bool newInputStream(const std::string& filename, pANTLR3_LEXER lexer) {
 452   Debug("parser") << "Including " << filename << std::endl;
 453   // Create a new input stream and take advantage of built in stream stacking
 454   // in C target runtime.
 455   //
 456   pANTLR3_INPUT_STREAM    in;
 457 #ifdef CVC4_ANTLR3_OLD_INPUT_STREAM
 458   in = antlr3AsciiFileStreamNew((pANTLR3_UINT8) filename.c_str());
 459 #else /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 460   in = antlr3FileStreamNew((pANTLR3_UINT8) filename.c_str(), ANTLR3_ENC_8BIT);
 461 #endif /* CVC4_ANTLR3_OLD_INPUT_STREAM */
 462   if( in == NULL ) {
 463     Debug("parser") << "Can't open " << filename << std::endl;
 464     return false;
 465   }
 466   // Same thing as the predefined PUSHSTREAM(in);
 467   lexer->pushCharStream(lexer, in);
 468   // restart it
 469   //lexer->rec->state->tokenStartCharIndex      = -10;
 470   //lexer->emit(lexer);
 471
 472   // Note that the input stream is not closed when it EOFs, I don't bother
 473   // to do it here, but it is up to you to track streams created like this
 474   // and destroy them when the whole parse session is complete. Remember that you
 475   // don't want to do this until all tokens have been manipulated all the way through
 476   // your tree parsers etc as the token does not store the text it just refers
 477   // back to the input stream and trying to get the text for it will abort if you
 478   // close the input stream too early.
 479
 480   //TODO what said before
 481   return true;
 482 }
 483
 484 void Smt2::includeFile(const std::string& filename) {
 485   // security for online version
 486   if(!canIncludeFile()) {
 487     parseError("include-file feature was disabled for this run.");
 488   }
 489
 490   // Get the lexer
 491   AntlrInput* ai = static_cast<AntlrInput*>(getInput());
 492   pANTLR3_LEXER lexer = ai->getAntlr3Lexer();
 493   // get the name of the current stream "Does it work inside an include?"
 494   const std::string inputName = ai->getInputStreamName();
 495
 496   // Find the directory of the current input file
 497   std::string path;
 498   size_t pos = inputName.rfind('/');
 499   if(pos != std::string::npos) {
 500     path = std::string(inputName, 0, pos + 1);
 501   }
 502   path.append(filename);
 503   if(!newInputStream(path, lexer)) {
 504     parseError("Couldn't open include file `" + path + "'");
 505   }
 506 }
 507
 508 Expr Smt2::mkSygusVar(const std::string& name, const Type& type, bool isPrimed) {
 509   Expr e = mkBoundVar(name, type);
 510   d_sygusVars.push_back(e);
 511   d_sygusVarPrimed[e] = false;
 512   if( isPrimed ){
 513     std::stringstream ss;
 514     ss << name << "'";
 515     Expr ep = mkBoundVar(ss.str(), type);
 516     d_sygusVars.push_back(ep);
 517     d_sygusVarPrimed[ep] = true;
 518   }
 519   return e;
 520 }
 521
 522 void collectSygusGrammarTypesFor( Type range, std::vector< Type >& types, std::map< Type, std::vector< DatatypeConstructorArg > >& sels ){
 523   if( !range.isBoolean() ){
 524     if( std::find( types.begin(), types.end(), range )==types.end() ){
 525       Debug("parser-sygus") << "...will make grammar for " << range << std::endl;
 526       types.push_back( range );
 527       if( range.isDatatype() ){
 528         const Datatype& dt = ((DatatypeType)range).getDatatype();
 529         for( unsigned i=0; i<dt.getNumConstructors(); i++ ){
 530           for( unsigned j=0; j<dt[i].getNumArgs(); j++ ){
 531             Type crange = ((SelectorType)dt[i][j].getType()).getRangeType();
 532             sels[crange].push_back( dt[i][j] );
 533             collectSygusGrammarTypesFor( crange, types, sels );
 534           }
 535         }
 536       }
 537     }
 538   }
 539 }
 540
 541 void Smt2::mkSygusDefaultGrammar( const Type& range, Expr& bvl, const std::string& fun, std::vector<CVC4::Datatype>& datatypes,
 542                                   std::vector<Type>& sorts, std::vector< std::vector<Expr> >& ops, std::vector<Expr> sygus_vars, int& startIndex ) {
 543
 544   //if( !range.isBoolean() && !range.isInteger() && !range.isBitVector() && !range.isDatatype() ){
 545   //  parseError("No default grammar for type.");
 546   //}
 547   startIndex = -1;
 548   Debug("parser-sygus") << "Construct default grammar for " << fun << " " << range << std::endl;
 549   std::map< CVC4::Type, CVC4::Type > sygus_to_builtin;
 550
 551   std::vector< Type > types;
 552   std::map< Type, std::vector< DatatypeConstructorArg > > sels;
 553   //types for each of the variables
 554   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 555     collectSygusGrammarTypesFor( sygus_vars[i].getType(), types, sels );
 556   }
 557   //types connected to range
 558   collectSygusGrammarTypesFor( range, types, sels );
 559
 560   //name of boolean sort
 561   std::stringstream ssb;
 562   ssb << fun << "_Bool";
 563   std::string dbname = ssb.str();
 564   Type unres_bt = mkUnresolvedType(ssb.str());
 565
 566   std::vector< Type > unres_types;
 567   std::map< Type, Type > type_to_unres;
 568   for( unsigned i=0; i<types.size(); i++ ){
 569     std::stringstream ss;
 570     ss << fun << "_" << types[i];
 571     std::string dname = ss.str();
 572     datatypes.push_back(Datatype(dname));
 573     ops.push_back(std::vector<Expr>());
 574     //make unresolved type
 575     Type unres_t = mkUnresolvedType(dname);
 576     unres_types.push_back(unres_t);
 577     type_to_unres[types[i]] = unres_t;
 578     sygus_to_builtin[unres_t] = types[i];
 579   }
 580   for( unsigned i=0; i<types.size(); i++ ){
 581     Debug("parser-sygus") << "Make grammar for " << types[i] << " " << unres_types[i] << std::endl;
 582     std::vector<std::string> cnames;
 583     std::vector<std::vector<CVC4::Type> > cargs;
 584     std::vector<std::string> unresolved_gterm_sym;
 585     Type unres_t = unres_types[i];
 586     //add variables
 587     for( unsigned j=0; j<sygus_vars.size(); j++ ){
 588       if( sygus_vars[j].getType()==types[i] ){
 589         std::stringstream ss;
 590         ss << sygus_vars[j];
 591         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 592         ops[i].push_back( sygus_vars[j] );
 593         cnames.push_back( ss.str() );
 594         cargs.push_back( std::vector< CVC4::Type >() );
 595       }
 596     }
 597     //add constants
 598     std::vector< Expr > consts;
 599     mkSygusConstantsForType( types[i], consts );
 600     for( unsigned j=0; j<consts.size(); j++ ){
 601       std::stringstream ss;
 602       ss << consts[j];
 603       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 604       ops[i].push_back( consts[j] );
 605       cnames.push_back( ss.str() );
 606       cargs.push_back( std::vector< CVC4::Type >() );
 607     }
 608     //ITE
 609     CVC4::Kind k = kind::ITE;
 610     Debug("parser-sygus") << "...add for " << k << std::endl;
 611     ops[i].push_back(getExprManager()->operatorOf(k));
 612     cnames.push_back( kind::kindToString(k) );
 613     cargs.push_back( std::vector< CVC4::Type >() );
 614     cargs.back().push_back(unres_bt);
 615     cargs.back().push_back(unres_t);
 616     cargs.back().push_back(unres_t);
 617
 618     if( types[i].isInteger() ){
 619       for( unsigned j=0; j<2; j++ ){
 620         CVC4::Kind k = j==0 ? kind::PLUS : kind::MINUS;
 621         Debug("parser-sygus") << "...add for " << k << std::endl;
 622         ops[i].push_back(getExprManager()->operatorOf(k));
 623         cnames.push_back(kind::kindToString(k));
 624         cargs.push_back( std::vector< CVC4::Type >() );
 625         cargs.back().push_back(unres_t);
 626         cargs.back().push_back(unres_t);
 627       }
 628     }else if( types[i].isDatatype() ){
 629       Debug("parser-sygus") << "...add for constructors" << std::endl;
 630       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 631       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 632         Debug("parser-sygus") << "...for " << dt[k].getName() << std::endl;
 633         ops[i].push_back( dt[k].getConstructor() );
 634         cnames.push_back( dt[k].getName() );
 635         cargs.push_back( std::vector< CVC4::Type >() );
 636         for( unsigned j=0; j<dt[k].getNumArgs(); j++ ){
 637           Type crange = ((SelectorType)dt[k][j].getType()).getRangeType();
 638           //Assert( type_to_unres.find(crange)!=type_to_unres.end() );
 639           cargs.back().push_back( type_to_unres[crange] );
 640         }
 641       }
 642     }else{
 643       std::stringstream sserr;
 644       sserr << "No implementation for default Sygus grammar of type " << types[i] << std::endl;
 645       warning(sserr.str());
 646     }
 647     //add for all selectors to this type
 648     if( !sels[types[i]].empty() ){
 649       Debug("parser-sygus") << "...add for selectors" << std::endl;
 650       for( unsigned j=0; j<sels[types[i]].size(); j++ ){
 651         Debug("parser-sygus") << "...for " << sels[types[i]][j].getName() << std::endl;
 652         Type arg_type = ((SelectorType)sels[types[i]][j].getType()).getDomain();
 653         ops[i].push_back( sels[types[i]][j].getSelector() );
 654         cnames.push_back( sels[types[i]][j].getName() );
 655         cargs.push_back( std::vector< CVC4::Type >() );
 656         //Assert( type_to_unres.find(arg_type)!=type_to_unres.end() );
 657         cargs.back().push_back( type_to_unres[arg_type] );
 658       }
 659     }
 660     Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 661     datatypes[i].setSygus( types[i], bvl, true, true );
 662     mkSygusDatatype( datatypes[i], ops[i], cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 663     sorts.push_back( types[i] );
 664     //set start index if applicable
 665     if( types[i]==range ){
 666       startIndex = i;
 667     }
 668   }
 669
 670   //make Boolean type
 671   Type btype = getExprManager()->booleanType();
 672   datatypes.push_back(Datatype(dbname));
 673   ops.push_back(std::vector<Expr>());
 674   std::vector<std::string> cnames;
 675   std::vector<std::vector<CVC4::Type> > cargs;
 676   std::vector<std::string> unresolved_gterm_sym;
 677   Debug("parser-sygus") << "Make grammar for " << btype << " " << datatypes.back() << std::endl;
 678   //add variables
 679   for( unsigned i=0; i<sygus_vars.size(); i++ ){
 680     if( sygus_vars[i].getType().isBoolean() ){
 681       std::stringstream ss;
 682       ss << sygus_vars[i];
 683       Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 684       ops.back().push_back( sygus_vars[i] );
 685       cnames.push_back( ss.str() );
 686       cargs.push_back( std::vector< CVC4::Type >() );
 687     }
 688   }
 689   //add constants if no variables and no connected types
 690   if( ops.back().empty() && types.empty() ){
 691     std::vector< Expr > consts;
 692     mkSygusConstantsForType( btype, consts );
 693     for( unsigned j=0; j<consts.size(); j++ ){
 694       std::stringstream ss;
 695       ss << consts[j];
 696       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 697       ops.back().push_back( consts[j] );
 698       cnames.push_back( ss.str() );
 699       cargs.push_back( std::vector< CVC4::Type >() );
 700     }
 701   }
 702   //add operators
 703   for( unsigned i=0; i<3; i++ ){
 704     CVC4::Kind k = i==0 ? kind::NOT : ( i==1 ? kind::AND : kind::OR );
 705     Debug("parser-sygus") << "...add for " << k << std::endl;
 706     ops.back().push_back(getExprManager()->operatorOf(k));
 707     cnames.push_back(kind::kindToString(k));
 708     cargs.push_back( std::vector< CVC4::Type >() );
 709     if( k==kind::NOT ){
 710       cargs.back().push_back(unres_bt);
 711     }else if( k==kind::AND || k==kind::OR ){
 712       cargs.back().push_back(unres_bt);
 713       cargs.back().push_back(unres_bt);
 714     }
 715   }
 716   //add predicates for types
 717   for( unsigned i=0; i<types.size(); i++ ){
 718     Debug("parser-sygus") << "...add predicates for " << types[i] << std::endl;
 719     //add equality per type
 720     CVC4::Kind k = kind::EQUAL;
 721     Debug("parser-sygus") << "...add for " << k << std::endl;
 722     ops.back().push_back(getExprManager()->operatorOf(k));
 723     std::stringstream ss;
 724     ss << kind::kindToString(k) << "_" << types[i];
 725     cnames.push_back(ss.str());
 726     cargs.push_back( std::vector< CVC4::Type >() );
 727     cargs.back().push_back(unres_types[i]);
 728     cargs.back().push_back(unres_types[i]);
 729     //type specific predicates
 730     if( types[i].isInteger() ){
 731       CVC4::Kind k = kind::LEQ;
 732       Debug("parser-sygus") << "...add for " << k << std::endl;
 733       ops.back().push_back(getExprManager()->operatorOf(k));
 734       cnames.push_back(kind::kindToString(k));
 735       cargs.push_back( std::vector< CVC4::Type >() );
 736       cargs.back().push_back(unres_types[i]);
 737       cargs.back().push_back(unres_types[i]);
 738     }else if( types[i].isDatatype() ){
 739       //add for testers
 740       Debug("parser-sygus") << "...add for testers" << std::endl;
 741       const Datatype& dt = ((DatatypeType)types[i]).getDatatype();
 742       for( unsigned k=0; k<dt.getNumConstructors(); k++ ){
 743         Debug("parser-sygus") << "...for " << dt[k].getTesterName() << std::endl;
 744         ops.back().push_back(dt[k].getTester());
 745         cnames.push_back(dt[k].getTesterName());
 746         cargs.push_back( std::vector< CVC4::Type >() );
 747         cargs.back().push_back(unres_types[i]);
 748       }
 749     }
 750   }
 751   if( range==btype ){
 752     startIndex = sorts.size();
 753   }
 754   Debug("parser-sygus") << "...make datatype " << datatypes.back() << std::endl;
 755   datatypes.back().setSygus( btype, bvl, true, true );
 756   mkSygusDatatype( datatypes.back(), ops.back(), cnames, cargs, unresolved_gterm_sym, sygus_to_builtin );
 757   sorts.push_back( btype );
 758
 759   Debug("parser-sygus") << "...finished make default grammar for " << fun << " " << range << std::endl;
 760 }
 761
 762 void Smt2::mkSygusConstantsForType( const Type& type, std::vector<CVC4::Expr>& ops ) {
 763   if( type.isInteger() ){
 764     ops.push_back(getExprManager()->mkConst(Rational(0)));
 765     ops.push_back(getExprManager()->mkConst(Rational(1)));
 766   }else if( type.isBitVector() ){
 767     unsigned sz = ((BitVectorType)type).getSize();
 768     BitVector bval0(sz, (unsigned int)0);
 769     ops.push_back( getExprManager()->mkConst(bval0) );
 770     BitVector bval1(sz, (unsigned int)1);
 771     ops.push_back( getExprManager()->mkConst(bval1) );
 772   }else if( type.isBoolean() ){
 773     ops.push_back(getExprManager()->mkConst(true));
 774     ops.push_back(getExprManager()->mkConst(false));
 775   }
 776   //TODO : others?
 777 }
 778
 779 //  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)
 780 //  This method may also add new elements pairwise into datatypes/sorts/ops/cnames/cargs in the case of non-flat gterms.
 781 void Smt2::processSygusGTerm( CVC4::SygusGTerm& sgt, int index,
 782                               std::vector< CVC4::Datatype >& datatypes,
 783                               std::vector< CVC4::Type>& sorts,
 784                               std::vector< std::vector<CVC4::Expr> >& ops,
 785                               std::vector< std::vector<std::string> >& cnames,
 786                               std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 787                               std::vector< bool >& allow_const,
 788                               std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 789                               std::vector<CVC4::Expr>& sygus_vars,
 790                               std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin, std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr,
 791                               CVC4::Type& ret, bool isNested ){
 792   if( sgt.d_gterm_type==SygusGTerm::gterm_op || sgt.d_gterm_type==SygusGTerm::gterm_let ){
 793     Debug("parser-sygus") << "Add " << sgt.d_expr << " to datatype " << index << std::endl;
 794     Kind oldKind;
 795     Kind newKind = kind::UNDEFINED_KIND;
 796     //convert to UMINUS if one child of MINUS
 797     if( sgt.d_children.size()==1 && sgt.d_expr==getExprManager()->operatorOf(kind::MINUS) ){
 798       oldKind = kind::MINUS;
 799       newKind = kind::UMINUS;
 800     }
 801     //convert to IFF if boolean EQUAL
 802     if( sgt.d_expr==getExprManager()->operatorOf(kind::EQUAL) ){
 803       Type ctn = sgt.d_children[0].d_type;
 804       std::map< CVC4::Type, CVC4::Type >::iterator it = sygus_to_builtin.find( ctn );
 805       if( it != sygus_to_builtin.end() && it->second.isBoolean() ){
 806         oldKind = kind::EQUAL;
 807         newKind = kind::IFF;
 808       }
 809     }
 810     if( newKind!=kind::UNDEFINED_KIND ){
 811       Expr newExpr = getExprManager()->operatorOf(newKind);
 812       Debug("parser-sygus") << "Replace " << sgt.d_expr << " with " << newExpr << std::endl;
 813       sgt.d_expr = newExpr;
 814       std::string oldName = kind::kindToString(oldKind);
 815       std::string newName = kind::kindToString(newKind);
 816       size_t pos = 0;
 817       if((pos = sgt.d_name.find(oldName, pos)) != std::string::npos){
 818         sgt.d_name.replace(pos, oldName.length(), newName);
 819       }
 820     }
 821     ops[index].push_back( sgt.d_expr );
 822     cnames[index].push_back( sgt.d_name );
 823     cargs[index].push_back( std::vector< CVC4::Type >() );
 824     for( unsigned i=0; i<sgt.d_children.size(); i++ ){
 825       std::stringstream ss;
 826       ss << datatypes[index].getName() << "_" << ops[index].size() << "_arg_" << i;
 827       std::string sub_dname = ss.str();
 828       //add datatype for child
 829       Type null_type;
 830       pushSygusDatatypeDef( null_type, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
 831       int sub_dt_index = datatypes.size()-1;
 832       //process child
 833       Type sub_ret;
 834       processSygusGTerm( sgt.d_children[i], sub_dt_index, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 835                          sygus_vars, sygus_to_builtin, sygus_to_builtin_expr, sub_ret, true );
 836       //process the nested gterm (either pop the last datatype, or flatten the argument)
 837       Type tt = processSygusNestedGTerm( sub_dt_index, sub_dname, datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym,
 838                                          sygus_to_builtin, sygus_to_builtin_expr, sub_ret );
 839       cargs[index].back().push_back(tt);
 840     }
 841     //if let, must create operator
 842     if( sgt.d_gterm_type==SygusGTerm::gterm_let ){
 843       processSygusLetConstructor( sgt.d_let_vars, index, datatypes, sorts, ops, cnames, cargs,
 844                                   sygus_vars, sygus_to_builtin, sygus_to_builtin_expr );
 845     }
 846   }else if( sgt.d_gterm_type==SygusGTerm::gterm_constant ){
 847     if( sgt.getNumChildren()!=0 ){
 848       parseError("Bad syntax for Sygus Constant.");
 849     }
 850     std::vector< Expr > consts;
 851     mkSygusConstantsForType( sgt.d_type, consts );
 852     Debug("parser-sygus") << "...made " << consts.size() << " constants." << std::endl;
 853     for( unsigned i=0; i<consts.size(); i++ ){
 854       std::stringstream ss;
 855       ss << consts[i];
 856       Debug("parser-sygus") << "...add for constant " << ss.str() << std::endl;
 857       ops[index].push_back( consts[i] );
 858       cnames[index].push_back( ss.str() );
 859       cargs[index].push_back( std::vector< CVC4::Type >() );
 860     }
 861     allow_const[index] = true;
 862   }else if( sgt.d_gterm_type==SygusGTerm::gterm_variable || sgt.d_gterm_type==SygusGTerm::gterm_input_variable ){
 863     if( sgt.getNumChildren()!=0 ){
 864       parseError("Bad syntax for Sygus Variable.");
 865     }
 866     Debug("parser-sygus") << "...process " << sygus_vars.size() << " variables." << std::endl;
 867     for( unsigned i=0; i<sygus_vars.size(); i++ ){
 868       if( sygus_vars[i].getType()==sgt.d_type ){
 869         std::stringstream ss;
 870         ss << sygus_vars[i];
 871         Debug("parser-sygus") << "...add for variable " << ss.str() << std::endl;
 872         ops[index].push_back( sygus_vars[i] );
 873         cnames[index].push_back( ss.str() );
 874         cargs[index].push_back( std::vector< CVC4::Type >() );
 875       }
 876     }
 877   }else if( sgt.d_gterm_type==SygusGTerm::gterm_nested_sort ){
 878     ret = sgt.d_type;
 879   }else if( sgt.d_gterm_type==SygusGTerm::gterm_unresolved ){
 880     if( isNested ){
 881       if( isUnresolvedType(sgt.d_name) ){
 882         ret = getSort(sgt.d_name);
 883       }else{
 884         //nested, unresolved symbol...fail
 885         std::stringstream ss;
 886         ss << "Cannot handle nested unresolved symbol " << sgt.d_name << std::endl;
 887         parseError(ss.str());
 888       }
 889     }else{
 890       //will resolve when adding constructors
 891       unresolved_gterm_sym[index].push_back(sgt.d_name);
 892     }
 893   }else if( sgt.d_gterm_type==SygusGTerm::gterm_ignore ){
 894
 895   }
 896 }
 897
 898 bool Smt2::pushSygusDatatypeDef( Type t, std::string& dname,
 899                                   std::vector< CVC4::Datatype >& datatypes,
 900                                   std::vector< CVC4::Type>& sorts,
 901                                   std::vector< std::vector<CVC4::Expr> >& ops,
 902                                   std::vector< std::vector<std::string> >& cnames,
 903                                   std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 904                                   std::vector< bool >& allow_const,
 905                                   std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 906   sorts.push_back(t);
 907   datatypes.push_back(Datatype(dname));
 908   ops.push_back(std::vector<Expr>());
 909   cnames.push_back(std::vector<std::string>());
 910   cargs.push_back(std::vector<std::vector<CVC4::Type> >());
 911   allow_const.push_back(false);
 912   unresolved_gterm_sym.push_back(std::vector< std::string >());
 913   return true;
 914 }
 915
 916 bool Smt2::popSygusDatatypeDef( std::vector< CVC4::Datatype >& datatypes,
 917                                  std::vector< CVC4::Type>& sorts,
 918                                  std::vector< std::vector<CVC4::Expr> >& ops,
 919                                  std::vector< std::vector<std::string> >& cnames,
 920                                  std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 921                                  std::vector< bool >& allow_const,
 922                                  std::vector< std::vector< std::string > >& unresolved_gterm_sym ){
 923   sorts.pop_back();
 924   datatypes.pop_back();
 925   ops.pop_back();
 926   cnames.pop_back();
 927   cargs.pop_back();
 928   allow_const.pop_back();
 929   unresolved_gterm_sym.pop_back();
 930   return true;
 931 }
 932
 933 Type Smt2::processSygusNestedGTerm( int sub_dt_index, std::string& sub_dname, std::vector< CVC4::Datatype >& datatypes,
 934                                     std::vector< CVC4::Type>& sorts,
 935                                     std::vector< std::vector<CVC4::Expr> >& ops,
 936                                     std::vector< std::vector<std::string> >& cnames,
 937                                     std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
 938                                     std::vector< bool >& allow_const,
 939                                     std::vector< std::vector< std::string > >& unresolved_gterm_sym,
 940                                     std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
 941                                     std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr, Type sub_ret ) {
 942   Type t = sub_ret;
 943   Debug("parser-sygus") << "Argument is ";
 944   if( t.isNull() ){
 945     //then, it is the datatype we constructed, which should have a single constructor
 946     t = mkUnresolvedType(sub_dname);
 947     Debug("parser-sygus") << "inline flattening of (auxiliary, local) datatype " << t << std::endl;
 948     Debug("parser-sygus") << ": to compute type, construct ground term witnessing the grammar, #cons=" << cargs[sub_dt_index].size() << std::endl;
 949     if( cargs[sub_dt_index].empty() ){
 950       parseError(std::string("Internal error : datatype for nested gterm does not have a constructor."));
 951     }
 952     Expr sop = ops[sub_dt_index][0];
 953     Type curr_t;
 954     if( sop.getKind() != kind::BUILTIN && ( sop.isConst() || cargs[sub_dt_index][0].empty() ) ){
 955       curr_t = sop.getType();
 956       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;
 957       sygus_to_builtin_expr[t] = sop;
 958       //store that term sop has dedicated sygus type t
 959       if( d_sygus_bound_var_type.find( sop )==d_sygus_bound_var_type.end() ){
 960         d_sygus_bound_var_type[sop] = t;
 961       }
 962     }else{
 963       std::vector< Expr > children;
 964       if( sop.getKind() != kind::BUILTIN ){
 965         children.push_back( sop );
 966       }
 967       for( unsigned i=0; i<cargs[sub_dt_index][0].size(); i++ ){
 968         std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[sub_dt_index][0][i] );
 969         if( it==sygus_to_builtin_expr.end() ){
 970           if( sygus_to_builtin.find( cargs[sub_dt_index][0][i] )==sygus_to_builtin.end() ){
 971             std::stringstream ss;
 972             ss << "Missing builtin type for type " << cargs[sub_dt_index][0][i] << "!" << std::endl;
 973             ss << "Builtin types are currently : " << std::endl;
 974             for( std::map< CVC4::Type, CVC4::Type >::iterator itb = sygus_to_builtin.begin(); itb != sygus_to_builtin.end(); ++itb ){
 975               ss << "  " << itb->first << " -> " << itb->second << std::endl;
 976             }
 977             parseError(ss.str());
 978           }
 979           Type bt = sygus_to_builtin[cargs[sub_dt_index][0][i]];
 980           Debug("parser-sygus") << ":  child " << i << " introduce type elem for " << cargs[sub_dt_index][0][i] << " " << bt << std::endl;
 981           std::stringstream ss;
 982           ss << t << "_x_" << i;
 983           Expr bv = mkBoundVar(ss.str(), bt);
 984           children.push_back( bv );
 985           d_sygus_bound_var_type[bv] = cargs[sub_dt_index][0][i];
 986         }else{
 987           Debug("parser-sygus") << ":  child " << i << " existing sygus to builtin expr : " << it->second << std::endl;
 988           children.push_back( it->second );
 989         }
 990       }
 991       Kind sk = sop.getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(sop);
 992       Debug("parser-sygus") << ": operator " << sop << " with " << sop.getKind() << " " << sk << std::endl;
 993       Expr e = getExprManager()->mkExpr( sk, children );
 994       Debug("parser-sygus") << ": constructed " << e << ", which has type " << e.getType() << std::endl;
 995       curr_t = e.getType();
 996       sygus_to_builtin_expr[t] = e;
 997     }
 998     sorts[sub_dt_index] = curr_t;
 999     sygus_to_builtin[t] = curr_t;
1000   }else{
1001     Debug("parser-sygus") << "simple argument " << t << std::endl;
1002     Debug("parser-sygus") << "...removing " << datatypes.back().getName() << std::endl;
1003     //otherwise, datatype was unecessary
1004     //pop argument datatype definition
1005     popSygusDatatypeDef( datatypes, sorts, ops, cnames, cargs, allow_const, unresolved_gterm_sym );
1006   }
1007   return t;
1008 }
1009
1010 void Smt2::processSygusLetConstructor( std::vector< CVC4::Expr >& let_vars,
1011                                        int index,
1012                                        std::vector< CVC4::Datatype >& datatypes,
1013                                        std::vector< CVC4::Type>& sorts,
1014                                        std::vector< std::vector<CVC4::Expr> >& ops,
1015                                        std::vector< std::vector<std::string> >& cnames,
1016                                        std::vector< std::vector< std::vector< CVC4::Type > > >& cargs,
1017                                        std::vector<CVC4::Expr>& sygus_vars,
1018                                        std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin,
1019                                        std::map< CVC4::Type, CVC4::Expr >& sygus_to_builtin_expr ) {
1020   std::vector< CVC4::Expr > let_define_args;
1021   Expr let_body;
1022   int dindex = cargs[index].size()-1;
1023   Debug("parser-sygus") << "Process let constructor for datatype " << datatypes[index].getName() << ", #subtypes = " << cargs[index][dindex].size() << std::endl;
1024   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1025     Debug("parser-sygus") << "  " << i << " : " << cargs[index][dindex][i] << std::endl;
1026     if( i+1==cargs[index][dindex].size() ){
1027       std::map< CVC4::Type, CVC4::Expr >::iterator it = sygus_to_builtin_expr.find( cargs[index][dindex][i] );
1028       if( it!=sygus_to_builtin_expr.end() ){
1029         let_body = it->second;
1030       }else{
1031         std::stringstream ss;
1032         ss << datatypes[index].getName() << "_body";
1033         let_body = mkBoundVar(ss.str(), sygus_to_builtin[cargs[index][dindex][i]]);
1034         d_sygus_bound_var_type[let_body] = cargs[index][dindex][i];
1035       }
1036     }
1037   }
1038   Debug("parser-sygus") << std::endl;
1039   Debug("parser-sygus") << "Body is " << let_body << std::endl;
1040   Debug("parser-sygus") << "# let vars = " << let_vars.size() << std::endl;
1041   for( unsigned i=0; i<let_vars.size(); i++ ){
1042     Debug("parser-sygus") << "  let var " << i << " : " << let_vars[i] << " " << let_vars[i].getType() << std::endl;
1043     let_define_args.push_back( let_vars[i] );
1044   }
1045   /*
1046   Debug("parser-sygus") << "index = " << index << ", start index = " << start_index << ", #Current datatypes = " << datatypes.size() << std::endl;
1047   for( unsigned i=start_index; i<datatypes.size(); i++ ){
1048     Debug("parser-sygus") << "  datatype " << i << " : " << datatypes[i].getName() << ", #cons = " << cargs[i].size() << std::endl;
1049     if( !cargs[i].empty() ){
1050       Debug("parser-sygus") << "  operator 0 is " << ops[i][0] << std::endl;
1051       Debug("parser-sygus") << "  cons 0 has " << cargs[i][0].size() << " sub fields." << std::endl;
1052       for( unsigned j=0; j<cargs[i][0].size(); j++ ){
1053         Type bt = sygus_to_builtin[cargs[i][0][j]];
1054         Debug("parser-sygus") << "    cons 0, selector " << j << " : " << cargs[i][0][j] << " " << bt << std::endl;
1055       }
1056     }
1057   }
1058   */
1059   //last argument is the return, pop
1060   cargs[index][dindex].pop_back();
1061   collectSygusLetArgs( let_body, cargs[index][dindex], let_define_args );
1062
1063   Debug("parser-sygus") << "Make define-fun with " << cargs[index][dindex].size() << " arguments..." << std::endl;
1064   std::vector<CVC4::Type> fsorts;
1065   for( unsigned i=0; i<cargs[index][dindex].size(); i++ ){
1066     Debug("parser-sygus") << "  " << i << " : " << let_define_args[i] << " " << let_define_args[i].getType() << " " << cargs[index][dindex][i] << std::endl;
1067     fsorts.push_back(let_define_args[i].getType());
1068   }
1069
1070   Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1071   std::stringstream ss;
1072   ss << datatypes[index].getName() << "_let";
1073   Expr let_func = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1074   d_sygus_defined_funs.push_back( let_func );
1075   preemptCommand( new DefineFunctionCommand(ss.str(), let_func, let_define_args, let_body) );
1076
1077   ops[index].pop_back();
1078   ops[index].push_back( let_func );
1079   cnames[index].pop_back();
1080   cnames[index].push_back(ss.str());
1081
1082   //mark function as let constructor
1083   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() );
1084   d_sygus_let_func_to_body[let_func] = let_body;
1085   d_sygus_let_func_to_num_input_vars[let_func] = let_vars.size();
1086 }
1087
1088
1089 void Smt2::collectSygusLetArgs( CVC4::Expr e, std::vector< CVC4::Type >& sygusArgs, std::vector< CVC4::Expr >& builtinArgs ) {
1090   if( e.getKind()==kind::BOUND_VARIABLE ){
1091     if( std::find( builtinArgs.begin(), builtinArgs.end(), e )==builtinArgs.end() ){
1092       builtinArgs.push_back( e );
1093       sygusArgs.push_back( d_sygus_bound_var_type[e] );
1094       if( d_sygus_bound_var_type[e].isNull() ){
1095         std::stringstream ss;
1096         ss << "While constructing body of let gterm, can't map " << e << " to sygus type." << std::endl;
1097         parseError(ss.str());
1098       }
1099     }
1100   }else{
1101     for( unsigned i=0; i<e.getNumChildren(); i++ ){
1102       collectSygusLetArgs( e[i], sygusArgs, builtinArgs );
1103     }
1104   }
1105 }
1106
1107 void Smt2::setSygusStartIndex( std::string& fun, int startIndex,
1108                                std::vector< CVC4::Datatype >& datatypes,
1109                                std::vector< CVC4::Type>& sorts,
1110                                std::vector< std::vector<CVC4::Expr> >& ops ) {
1111   if( startIndex>0 ){
1112     CVC4::Datatype tmp_dt = datatypes[0];
1113     Type tmp_sort = sorts[0];
1114     std::vector< Expr > tmp_ops;
1115     tmp_ops.insert( tmp_ops.end(), ops[0].begin(), ops[0].end() );
1116     datatypes[0] = datatypes[startIndex];
1117     sorts[0] = sorts[startIndex];
1118     ops[0].clear();
1119     ops[0].insert( ops[0].end(), ops[startIndex].begin(), ops[startIndex].end() );
1120     datatypes[startIndex] = tmp_dt;
1121     sorts[startIndex] = tmp_sort;
1122     ops[startIndex].clear();
1123     ops[startIndex].insert( ops[startIndex].begin(), tmp_ops.begin(), tmp_ops.end() );
1124   }else if( startIndex<0 ){
1125     std::stringstream ss;
1126     ss << "warning: no symbol named Start for synth-fun " << fun << std::endl;
1127     warning(ss.str());
1128   }
1129 }
1130
1131 void Smt2::defineSygusFuns() {
1132   // only define each one once
1133   while(d_nextSygusFun < d_sygusFuns.size()) {
1134     std::pair<std::string, Expr> p = d_sygusFuns[d_nextSygusFun];
1135     std::string fun = p.first;
1136     Debug("parser-sygus") << "Sygus : define fun " << fun << std::endl;
1137     Expr eval = p.second;
1138     FunctionType evalType = eval.getType();
1139     std::vector<Type> argTypes = evalType.getArgTypes();
1140     Type rangeType = evalType.getRangeType();
1141     Debug("parser-sygus") << "...eval type : " << evalType << ", #args=" << argTypes.size() << std::endl;
1142
1143     // first make the function type
1144     std::vector<Expr> sygusVars;
1145     std::vector<Type> funType;
1146     for(size_t j = 1; j < argTypes.size(); ++j) {
1147       funType.push_back(argTypes[j]);
1148       std::stringstream ss;
1149       ss << fun << "_v_" << j;
1150       sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), argTypes[j]));
1151     }
1152     Type funt;
1153     if( !funType.empty() ){
1154       funt = getExprManager()->mkFunctionType(funType, rangeType);
1155       Debug("parser-sygus") << "...eval function type : " << funt << std::endl;
1156
1157       // copy the bound vars
1158       /*
1159       std::vector<Expr> sygusVars;
1160       //std::vector<Type> types;
1161       for(size_t i = 0; i < d_sygusVars.size(); ++i) {
1162         std::stringstream ss;
1163         ss << d_sygusVars[i];
1164         Type type = d_sygusVars[i].getType();
1165         sygusVars.push_back(getExprManager()->mkBoundVar(ss.str(), type));
1166         //types.push_back(type);
1167       }
1168       Debug("parser-sygus") << "...made vars, #vars=" << sygusVars.size() << std::endl;
1169       */
1170
1171       //Type t = getExprManager()->mkFunctionType(types, rangeType);
1172       //Debug("parser-sygus") << "...function type : " << t << std::endl;
1173     }else{
1174       funt = rangeType;
1175     }
1176     Expr lambda = mkFunction(fun, funt, ExprManager::VAR_FLAG_DEFINED);
1177     Debug("parser-sygus") << "...made function : " << lambda << std::endl;
1178     std::vector<Expr> applyv;
1179     Expr funbv = getExprManager()->mkBoundVar(std::string("f") + fun, argTypes[0]);
1180     d_sygusFunSymbols.push_back(funbv);
1181     applyv.push_back(eval);
1182     applyv.push_back(funbv);
1183     for(size_t i = 0; i < sygusVars.size(); ++i) {
1184       applyv.push_back(sygusVars[i]);
1185     }
1186     Expr apply = getExprManager()->mkExpr(kind::APPLY_UF, applyv);
1187     Debug("parser-sygus") << "...made apply " << apply << std::endl;
1188     Debug("parser-sygus") << "--> Define " << fun << " as " << lambda << " " << apply << std::endl;
1189     Command* cmd = new DefineFunctionCommand(fun, lambda, sygusVars, apply);
1190     preemptCommand(cmd);
1191
1192     ++d_nextSygusFun;
1193   }
1194 }
1195
1196 void Smt2::mkSygusDatatype( CVC4::Datatype& dt, std::vector<CVC4::Expr>& ops,
1197                             std::vector<std::string>& cnames, std::vector< std::vector< CVC4::Type > >& cargs,
1198                             std::vector<std::string>& unresolved_gterm_sym,
1199                             std::map< CVC4::Type, CVC4::Type >& sygus_to_builtin ) {
1200   Debug("parser-sygus") << "Making sygus datatype " << dt.getName() << std::endl;
1201   Debug("parser-sygus") << "  add constructors..." << std::endl;
1202   for( int i=0; i<(int)cnames.size(); i++ ){
1203     bool is_dup = false;
1204     bool is_dup_op = false;
1205     Expr let_body;
1206     std::vector< Expr > let_args;
1207     unsigned let_num_input_args = 0;
1208     for( int j=0; j<i; j++ ){
1209       if( ops[i]==ops[j] ){
1210         is_dup_op = true;
1211         if( cargs[i].size()==cargs[j].size() ){
1212           is_dup = true;
1213           for( unsigned k=0; k<cargs[i].size(); k++ ){
1214             if( cargs[i][k]!=cargs[j][k] ){
1215               is_dup = false;
1216               break;
1217             }
1218           }
1219         }
1220         if( is_dup ){
1221           break;
1222         }
1223       }
1224     }
1225     if( is_dup ){
1226       Debug("parser-sygus") << "--> Duplicate gterm : " << ops[i] << " at " << i << std::endl;
1227       ops.erase( ops.begin() + i, ops.begin() + i + 1 );
1228       cnames.erase( cnames.begin() + i, cnames.begin() + i + 1 );
1229       cargs.erase( cargs.begin() + i, cargs.begin() + i + 1 );
1230       i--;
1231     }else if( is_dup_op ){
1232       Debug("parser-sygus") << "--> Duplicate gterm operator : " << ops[i] << " at " << i << std::endl;
1233       //make into define-fun
1234       std::vector<CVC4::Type> fsorts;
1235       for( unsigned j=0; j<cargs[i].size(); j++ ){
1236         Type bt = sygus_to_builtin[cargs[i][j]];
1237         std::stringstream ss;
1238         ss << dt.getName() << "_x_" << i << "_" << j;
1239         Expr v = mkBoundVar(ss.str(), bt);
1240         let_args.push_back( v );
1241         fsorts.push_back( bt );
1242         Debug("parser-sygus") << ": var " << i << " " << v << " with type " << bt << " from " << cargs[i][j] << std::endl;
1243       }
1244       //make the let_body
1245       std::vector< Expr > children;
1246       if( ops[i].getKind() != kind::BUILTIN ){
1247         children.push_back( ops[i] );
1248       }
1249       children.insert( children.end(), let_args.begin(), let_args.end() );
1250       Kind sk = ops[i].getKind() != kind::BUILTIN ? kind::APPLY : getExprManager()->operatorToKind(ops[i]);
1251       Debug("parser-sygus") << ": replace " << ops[i] << " " << ops[i].getKind() << " " << sk << std::endl;
1252       let_body = getExprManager()->mkExpr( sk, children );
1253       Debug("parser-sygus") << ": new body of function is " << let_body << std::endl;
1254
1255       Type ft = getExprManager()->mkFunctionType(fsorts, let_body.getType());
1256       Debug("parser-sygus") << ": function type is " << ft << std::endl;
1257       std::stringstream ss;
1258       ss << dt.getName() << "_df_" << i;
1259       //replace operator and name
1260       ops[i] = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1261       cnames[i] = ss.str();
1262       d_sygus_defined_funs.push_back( ops[i] );
1263       preemptCommand( new DefineFunctionCommand(ss.str(), ops[i], let_args, let_body) );
1264       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, 0 );
1265     }else{
1266       std::map< CVC4::Expr, CVC4::Expr >::iterator it = d_sygus_let_func_to_body.find( ops[i] );
1267       if( it!=d_sygus_let_func_to_body.end() ){
1268         let_body = it->second;
1269         let_args.insert( let_args.end(), d_sygus_let_func_to_vars[ops[i]].begin(), d_sygus_let_func_to_vars[ops[i]].end() );
1270         let_num_input_args = d_sygus_let_func_to_num_input_vars[ops[i]];
1271       }
1272       addSygusDatatypeConstructor( dt, ops[i], cnames[i], cargs[i], let_body, let_args, let_num_input_args );
1273     }
1274   }
1275   Debug("parser-sygus") << "  add constructors for unresolved symbols..." << std::endl;
1276   if( !unresolved_gterm_sym.empty() ){
1277     std::vector< Type > types;
1278     Debug("parser-sygus") << "...resolve " << unresolved_gterm_sym.size() << " symbols..." << std::endl;
1279     for( unsigned i=0; i<unresolved_gterm_sym.size(); i++ ){
1280       Debug("parser-sygus") << "  resolve : " << unresolved_gterm_sym[i] << std::endl;
1281       if( isUnresolvedType(unresolved_gterm_sym[i]) ){
1282         Debug("parser-sygus") << "    it is an unresolved type." << std::endl;
1283         Type t = getSort(unresolved_gterm_sym[i]);
1284         if( std::find( types.begin(), types.end(), t )==types.end() ){
1285           types.push_back( t );
1286           //identity element
1287           Type bt = dt.getSygusType();
1288           Debug("parser-sygus") << ":  make identity function for " << bt << ", argument type " << t << std::endl;
1289           std::stringstream ss;
1290           ss << t << "_x_id";
1291           Expr let_body = mkBoundVar(ss.str(), bt);
1292           std::vector< Expr > let_args;
1293           let_args.push_back( let_body );
1294           //make the identity function
1295           Type ft = getExprManager()->mkFunctionType(bt, bt);
1296           std::stringstream ssid;
1297           ssid << unresolved_gterm_sym[i] << "_id";
1298           Expr id_op = mkFunction(ss.str(), ft, ExprManager::VAR_FLAG_DEFINED);
1299           d_sygus_defined_funs.push_back( id_op );
1300           preemptCommand( new DefineFunctionCommand(ssid.str(), id_op, let_args, let_body) );
1301           //make the sygus argument list
1302           std::vector< Type > id_carg;
1303           id_carg.push_back( t );
1304           addSygusDatatypeConstructor( dt, id_op, unresolved_gterm_sym[i], id_carg, let_body, let_args, 0 );
1305           //add to operators
1306           ops.push_back( id_op );
1307         }
1308       }else{
1309         Debug("parser-sygus") << "    ignore. (likely a free let variable)" << std::endl;
1310       }
1311     }
1312   }
1313
1314 }
1315
1316 void Smt2::addSygusDatatypeConstructor( CVC4::Datatype& dt, CVC4::Expr op, std::string& cname, std::vector< CVC4::Type >& cargs,
1317                                         CVC4::Expr& let_body, std::vector< CVC4::Expr >& let_args, unsigned let_num_input_args ) {
1318   Debug("parser-sygus") << "--> Add constructor " << cname << " to " << dt.getName() << std::endl;
1319   if( !let_body.isNull() ){
1320     Debug("parser-sygus") << "    let body = " << let_body << ", args = " << let_args.size() << "," << let_num_input_args << std::endl;
1321     //TODO : remove arguments not occurring in body
1322     //if this is a self identity function, ignore
1323     if( let_args.size()==0 && let_args[0]==let_body ){
1324       Debug("parser-sygus") << "    identity function " << cargs[0] << " to " << dt.getName() << std::endl;
1325       //TODO
1326     }
1327   }
1328   std::string name = dt.getName() + "_" + cname;
1329   std::string testerId("is-");
1330   testerId.append(name);
1331   checkDeclaration(name, CHECK_UNDECLARED, SYM_VARIABLE);
1332   checkDeclaration(testerId, CHECK_UNDECLARED, SYM_VARIABLE);
1333   CVC4::DatatypeConstructor c(name, testerId );
1334   c.setSygus( op, let_body, let_args, let_num_input_args );
1335   for( unsigned j=0; j<cargs.size(); j++ ){
1336     Debug("parser-sygus-debug") << "  arg " << j << " : " << cargs[j] << std::endl;
1337     std::stringstream sname;
1338     sname << name << "_" << j;
1339     c.addArg(sname.str(), cargs[j]);
1340   }
1341   dt.addConstructor(c);
1342 }
1343
1344
1345 // i is index in datatypes/ops
1346 // j is index is datatype
1347 Expr Smt2::getSygusAssertion( std::vector<DatatypeType>& datatypeTypes, std::vector< std::vector<Expr> >& ops,
1348                               std::map<DatatypeType, Expr>& evals, std::vector<Expr>& terms,
1349                               Expr eval, const Datatype& dt, size_t i, size_t j ) {
1350   const DatatypeConstructor& ctor = dt[j];
1351   Debug("parser-sygus") << "Sygus : process constructor " << j << " : " << dt[j] << std::endl;
1352   std::vector<Expr> bvs, extraArgs;
1353   for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1354     std::string vname = "v_" + ctor[k].getName();
1355     Expr bv = getExprManager()->mkBoundVar(vname, SelectorType(ctor[k].getType()).getRangeType());
1356     bvs.push_back(bv);
1357     extraArgs.push_back(bv);
1358   }
1359   if( !terms[0].isNull() ){
1360     bvs.insert(bvs.end(), terms[0].begin(), terms[0].end());
1361   }
1362   Expr bvl;
1363   if( !bvs.empty() ){
1364     bvl = getExprManager()->mkExpr(kind::BOUND_VAR_LIST, bvs);
1365   }
1366   Debug("parser-sygus") << "...made bv list " << bvl << std::endl;
1367   std::vector<Expr> patv;
1368   patv.push_back(eval);
1369   std::vector<Expr> applyv;
1370   applyv.push_back(ctor.getConstructor());
1371   applyv.insert(applyv.end(), extraArgs.begin(), extraArgs.end());
1372   for(size_t k = 0; k < applyv.size(); ++k) {
1373   }
1374   Expr cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1375   Debug("parser-sygus") << "...made eval ctor apply " << cpatv << std::endl;
1376   patv.push_back(cpatv);
1377   if( !terms[0].isNull() ){
1378     patv.insert(patv.end(), terms[0].begin(), terms[0].end());
1379   }
1380   Expr evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1381   Debug("parser-sygus") << "...made eval apply " << evalApply << std::endl;
1382   std::vector<Expr> builtApply;
1383   for(size_t k = 0; k < extraArgs.size(); ++k) {
1384     std::vector<Expr> patvb;
1385     patvb.push_back(evals[DatatypeType(extraArgs[k].getType())]);
1386     patvb.push_back(extraArgs[k]);
1387     if( !terms[0].isNull() ){
1388       patvb.insert(patvb.end(), terms[0].begin(), terms[0].end());
1389     }
1390     Debug("parser-sygus-debug") << "...add to built apply " << evals[DatatypeType(extraArgs[k].getType())] << " " << extraArgs[k] << " " << extraArgs[k].getType() << std::endl;
1391     builtApply.push_back(getExprManager()->mkExpr(kind::APPLY_UF, patvb));
1392     Debug("parser-sygus-debug") << "...added " << builtApply.back() << std::endl;
1393   }
1394   for(size_t k = 0; k < builtApply.size(); ++k) {
1395   }
1396   Expr builtTerm;
1397   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;
1398   if( ops[i][j].getKind() != kind::BUILTIN ){
1399     Kind ok = kind::UNDEFINED_KIND;
1400     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() ){
1401       ok = kind::APPLY;
1402     }else{
1403       Type t = ops[i][j].getType();
1404       if( t.isConstructor() ){
1405         ok = kind::APPLY_CONSTRUCTOR;
1406       }else if( t.isSelector() ){
1407         ok = kind::APPLY_SELECTOR;
1408       }else if( t.isTester() ){
1409         ok = kind::APPLY_TESTER;
1410       }else{
1411         ok = getExprManager()->operatorToKind( ops[i][j] );
1412       }
1413     }
1414     Debug("parser-sygus") << "...processed operator kind : " << ok << std::endl;
1415     if( ok!=kind::UNDEFINED_KIND ){
1416       builtTerm = getExprManager()->mkExpr(ok, ops[i][j], builtApply);
1417     }else{
1418       builtTerm = ops[i][j];
1419     }
1420   }else{
1421     if( !builtApply.empty() ){
1422       builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1423     }else{
1424       builtTerm = ops[i][j];
1425     }
1426   }
1427   Debug("parser-sygus") << "...made built term " << builtTerm << std::endl;
1428   Expr assertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1429   if( !bvl.isNull() ){
1430     Expr pattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1431     pattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, pattern);
1432     assertion = getExprManager()->mkExpr(kind::FORALL, bvl, assertion, pattern);
1433   }
1434   Debug("parser-sygus") << "...made assertion " << assertion << std::endl;
1435
1436   //linearize multiplication if possible
1437   if( builtTerm.getKind()==kind::MULT ){
1438     for(size_t k = 0; k < ctor.getNumArgs(); ++k) {
1439       Type at = SelectorType(ctor[k].getType()).getRangeType();
1440       if( at.isDatatype() ){
1441         DatatypeType atd = (DatatypeType)SelectorType(ctor[k].getType()).getRangeType();
1442         Debug("parser-sygus") << "Argument " << k << " " << atd << std::endl;
1443         std::vector<DatatypeType>::iterator itd = std::find( datatypeTypes.begin(), datatypeTypes.end(), atd );
1444         if( itd!=datatypeTypes.end() ){
1445           Debug("parser-sygus2") << "Exists in datatypeTypes." << std::endl;
1446           unsigned index = itd-datatypeTypes.begin();
1447           Debug("parser-sygus2") << "index = " << index << std::endl;
1448           bool isConst = true;
1449           for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1450             Debug("parser-sygus2") << "ops[" << cc << "]=" << ops[index][cc] << std::endl;
1451             if( ops[index][cc].getKind() != kind::CONST_RATIONAL ){
1452               isConst = false;
1453               break;
1454             }
1455           }
1456           if( isConst ){
1457             Debug("parser-sygus") << "Linearize multiplication " << ctor << " based on argument " << k << std::endl;
1458             const Datatype & atdd = atd.getDatatype();
1459             std::vector<Expr> assertions;
1460             std::vector<Expr> nbvs;
1461             for( unsigned a=0; a<bvl.getNumChildren(); a++ ){
1462               if( a!=k ){
1463                 nbvs.push_back( bvl[a] );
1464               }
1465             }
1466             Expr nbvl = getExprManager()->mkExpr( kind::BOUND_VAR_LIST, nbvs );
1467             for( unsigned cc = 0; cc < ops[index].size(); cc++ ){
1468               //Make new assertion based on partially instantiating existing
1469               applyv[k+1] = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, atdd[cc].getConstructor());
1470               Debug("parser-sygus") << "applyv " << applyv[k+1] << std::endl;
1471               cpatv = getExprManager()->mkExpr(kind::APPLY_CONSTRUCTOR, applyv);
1472               Debug("parser-sygus") << "cpatv " << cpatv << std::endl;
1473               patv[1] = cpatv;
1474               evalApply = getExprManager()->mkExpr(kind::APPLY_UF, patv);
1475               Debug("parser-sygus") << "evalApply " << evalApply << std::endl;
1476               builtApply[k] = ops[index][cc];
1477               Debug("parser-sygus") << "builtApply " << builtApply[k] << std::endl;
1478               builtTerm = getExprManager()->mkExpr(ops[i][j], builtApply);
1479               Debug("parser-sygus") << "builtTerm " << builtTerm << std::endl;
1480               Expr eassertion = getExprManager()->mkExpr(evalApply.getType().isBoolean() ? kind::IFF : kind::EQUAL, evalApply, builtTerm);
1481               Expr epattern = getExprManager()->mkExpr(kind::INST_PATTERN, evalApply);
1482               epattern = getExprManager()->mkExpr(kind::INST_PATTERN_LIST, epattern);
1483               eassertion = getExprManager()->mkExpr(kind::FORALL, nbvl, eassertion, epattern);
1484               assertions.push_back( eassertion );
1485             }
1486             assertion = assertions.size()==1 ? assertions[0] : getExprManager()->mkExpr( kind::AND, assertions );
1487             Debug("parser-sygus") << "...(linearized) assertion is: " << assertion << std::endl;
1488           }
1489         }
1490       }
1491     }
1492   }
1493   return assertion;
1494 }
1495
1496 const void Smt2::getSygusPrimedVars( std::vector<Expr>& vars, bool isPrimed ) {
1497   for( unsigned i=0; i<d_sygusVars.size(); i++ ){
1498     Expr v = d_sygusVars[i];
1499     std::map< Expr, bool >::iterator it = d_sygusVarPrimed.find( v );
1500     if( it!=d_sygusVarPrimed.end() ){
1501       if( it->second==isPrimed ){
1502         vars.push_back( v );
1503       }
1504     }else{
1505       //should never happen
1506     }
1507   }
1508 }
1509
1510 }/* CVC4::parser namespace */
1511 }/* CVC4 namespace */