1 /********************* */
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) 2009-2017 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
12 ** \brief Definitions of SMT2 constants.
14 ** Definitions of SMT2 constants.
16 #include "parser/smt2/smt2.h"
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 "printer/sygus_print_callback.h"
25 #include "smt/command.h"
26 #include "util/bitvector.h"
30 // ANTLR defines these, which is really bad!
37 Smt2::Smt2(ExprManager
* exprManager
, Input
* input
, bool strictMode
, bool parseOnly
) :
38 Parser(exprManager
,input
,strictMode
,parseOnly
),
40 if( !strictModeEnabled() ) {
41 addTheory(Smt2::THEORY_CORE
);
45 void Smt2::setLanguage(InputLanguage lang
) {
46 ((Smt2Input
*) getInput())->setLanguage(lang
);
49 void Smt2::addArithmeticOperators() {
50 Parser::addOperator(kind::PLUS
);
51 Parser::addOperator(kind::MINUS
);
52 Parser::addOperator(kind::UMINUS
);
53 Parser::addOperator(kind::MULT
);
54 Parser::addOperator(kind::LT
);
55 Parser::addOperator(kind::LEQ
);
56 Parser::addOperator(kind::GT
);
57 Parser::addOperator(kind::GEQ
);
59 addOperator(kind::POW
, "^");
60 addOperator(kind::EXPONENTIAL
, "exp");
61 addOperator(kind::SINE
, "sin");
62 addOperator(kind::COSINE
, "cos");
63 addOperator(kind::TANGENT
, "tan");
66 void Smt2::addBitvectorOperators() {
67 addOperator(kind::BITVECTOR_CONCAT
, "concat");
68 addOperator(kind::BITVECTOR_NOT
, "bvnot");
69 addOperator(kind::BITVECTOR_AND
, "bvand");
70 addOperator(kind::BITVECTOR_OR
, "bvor");
71 addOperator(kind::BITVECTOR_NEG
, "bvneg");
72 addOperator(kind::BITVECTOR_PLUS
, "bvadd");
73 addOperator(kind::BITVECTOR_MULT
, "bvmul");
74 addOperator(kind::BITVECTOR_UDIV
, "bvudiv");
75 addOperator(kind::BITVECTOR_UREM
, "bvurem");
76 addOperator(kind::BITVECTOR_SHL
, "bvshl");
77 addOperator(kind::BITVECTOR_LSHR
, "bvlshr");
78 addOperator(kind::BITVECTOR_ULT
, "bvult");
79 addOperator(kind::BITVECTOR_NAND
, "bvnand");
80 addOperator(kind::BITVECTOR_NOR
, "bvnor");
81 addOperator(kind::BITVECTOR_XOR
, "bvxor");
82 addOperator(kind::BITVECTOR_XNOR
, "bvxnor");
83 addOperator(kind::BITVECTOR_COMP
, "bvcomp");
84 addOperator(kind::BITVECTOR_SUB
, "bvsub");
85 addOperator(kind::BITVECTOR_SDIV
, "bvsdiv");
86 addOperator(kind::BITVECTOR_SREM
, "bvsrem");
87 addOperator(kind::BITVECTOR_SMOD
, "bvsmod");
88 addOperator(kind::BITVECTOR_ASHR
, "bvashr");
89 addOperator(kind::BITVECTOR_ULE
, "bvule");
90 addOperator(kind::BITVECTOR_UGT
, "bvugt");
91 addOperator(kind::BITVECTOR_UGE
, "bvuge");
92 addOperator(kind::BITVECTOR_SLT
, "bvslt");
93 addOperator(kind::BITVECTOR_SLE
, "bvsle");
94 addOperator(kind::BITVECTOR_SGT
, "bvsgt");
95 addOperator(kind::BITVECTOR_SGE
, "bvsge");
96 addOperator(kind::BITVECTOR_REDOR
, "bvredor");
97 addOperator(kind::BITVECTOR_REDAND
, "bvredand");
99 Parser::addOperator(kind::BITVECTOR_BITOF
);
100 Parser::addOperator(kind::BITVECTOR_EXTRACT
);
101 Parser::addOperator(kind::BITVECTOR_REPEAT
);
102 Parser::addOperator(kind::BITVECTOR_ZERO_EXTEND
);
103 Parser::addOperator(kind::BITVECTOR_SIGN_EXTEND
);
104 Parser::addOperator(kind::BITVECTOR_ROTATE_LEFT
);
105 Parser::addOperator(kind::BITVECTOR_ROTATE_RIGHT
);
107 Parser::addOperator(kind::INT_TO_BITVECTOR
);
108 Parser::addOperator(kind::BITVECTOR_TO_NAT
);
111 void Smt2::addStringOperators() {
112 addOperator(kind::STRING_CONCAT
, "str.++");
113 addOperator(kind::STRING_LENGTH
, "str.len");
114 addOperator(kind::STRING_SUBSTR
, "str.substr" );
115 addOperator(kind::STRING_STRCTN
, "str.contains" );
116 addOperator(kind::STRING_CHARAT
, "str.at" );
117 addOperator(kind::STRING_STRIDOF
, "str.indexof" );
118 addOperator(kind::STRING_STRREPL
, "str.replace" );
119 addOperator(kind::STRING_PREFIX
, "str.prefixof" );
120 addOperator(kind::STRING_SUFFIX
, "str.suffixof" );
121 addOperator(kind::STRING_ITOS
, "int.to.str" );
122 addOperator(kind::STRING_STOI
, "str.to.int" );
123 addOperator(kind::STRING_IN_REGEXP
, "str.in.re");
124 addOperator(kind::STRING_TO_REGEXP
, "str.to.re");
125 addOperator(kind::REGEXP_CONCAT
, "re.++");
126 addOperator(kind::REGEXP_UNION
, "re.union");
127 addOperator(kind::REGEXP_INTER
, "re.inter");
128 addOperator(kind::REGEXP_STAR
, "re.*");
129 addOperator(kind::REGEXP_PLUS
, "re.+");
130 addOperator(kind::REGEXP_OPT
, "re.opt");
131 addOperator(kind::REGEXP_RANGE
, "re.range");
132 addOperator(kind::REGEXP_LOOP
, "re.loop");
135 void Smt2::addFloatingPointOperators() {
136 addOperator(kind::FLOATINGPOINT_FP
, "fp");
137 addOperator(kind::FLOATINGPOINT_EQ
, "fp.eq");
138 addOperator(kind::FLOATINGPOINT_ABS
, "fp.abs");
139 addOperator(kind::FLOATINGPOINT_NEG
, "fp.neg");
140 addOperator(kind::FLOATINGPOINT_PLUS
, "fp.add");
141 addOperator(kind::FLOATINGPOINT_SUB
, "fp.sub");
142 addOperator(kind::FLOATINGPOINT_MULT
, "fp.mul");
143 addOperator(kind::FLOATINGPOINT_DIV
, "fp.div");
144 addOperator(kind::FLOATINGPOINT_FMA
, "fp.fma");
145 addOperator(kind::FLOATINGPOINT_SQRT
, "fp.sqrt");
146 addOperator(kind::FLOATINGPOINT_REM
, "fp.rem");
147 addOperator(kind::FLOATINGPOINT_RTI
, "fp.roundToIntegral");
148 addOperator(kind::FLOATINGPOINT_MIN
, "fp.min");
149 addOperator(kind::FLOATINGPOINT_MAX
, "fp.max");
150 addOperator(kind::FLOATINGPOINT_LEQ
, "fp.leq");
151 addOperator(kind::FLOATINGPOINT_LT
, "fp.lt");
152 addOperator(kind::FLOATINGPOINT_GEQ
, "fp.geq");
153 addOperator(kind::FLOATINGPOINT_GT
, "fp.gt");
154 addOperator(kind::FLOATINGPOINT_ISN
, "fp.isNormal");
155 addOperator(kind::FLOATINGPOINT_ISSN
, "fp.isSubnormal");
156 addOperator(kind::FLOATINGPOINT_ISZ
, "fp.isZero");
157 addOperator(kind::FLOATINGPOINT_ISINF
, "fp.isInfinite");
158 addOperator(kind::FLOATINGPOINT_ISNAN
, "fp.isNaN");
159 addOperator(kind::FLOATINGPOINT_ISNEG
, "fp.isNegative");
160 addOperator(kind::FLOATINGPOINT_ISPOS
, "fp.isPositive");
161 addOperator(kind::FLOATINGPOINT_TO_REAL
, "fp.to_real");
163 Parser::addOperator(kind::FLOATINGPOINT_TO_FP_IEEE_BITVECTOR
);
164 Parser::addOperator(kind::FLOATINGPOINT_TO_FP_FLOATINGPOINT
);
165 Parser::addOperator(kind::FLOATINGPOINT_TO_FP_REAL
);
166 Parser::addOperator(kind::FLOATINGPOINT_TO_FP_SIGNED_BITVECTOR
);
167 Parser::addOperator(kind::FLOATINGPOINT_TO_FP_UNSIGNED_BITVECTOR
);
168 Parser::addOperator(kind::FLOATINGPOINT_TO_UBV
);
169 Parser::addOperator(kind::FLOATINGPOINT_TO_SBV
);
172 void Smt2::addSepOperators() {
173 addOperator(kind::SEP_STAR
, "sep");
174 addOperator(kind::SEP_PTO
, "pto");
175 addOperator(kind::SEP_WAND
, "wand");
176 addOperator(kind::SEP_EMP
, "emp");
177 Parser::addOperator(kind::SEP_STAR
);
178 Parser::addOperator(kind::SEP_PTO
);
179 Parser::addOperator(kind::SEP_WAND
);
180 Parser::addOperator(kind::SEP_EMP
);
183 void Smt2::addTheory(Theory theory
) {
186 addOperator(kind::SELECT
, "select");
187 addOperator(kind::STORE
, "store");
190 case THEORY_BITVECTORS
:
191 addBitvectorOperators();
195 defineType("Bool", getExprManager()->booleanType());
196 defineVar("true", getExprManager()->mkConst(true));
197 defineVar("false", getExprManager()->mkConst(false));
198 Parser::addOperator(kind::AND
);
199 Parser::addOperator(kind::DISTINCT
);
200 Parser::addOperator(kind::EQUAL
);
201 Parser::addOperator(kind::IMPLIES
);
202 Parser::addOperator(kind::ITE
);
203 Parser::addOperator(kind::NOT
);
204 Parser::addOperator(kind::OR
);
205 Parser::addOperator(kind::XOR
);
208 case THEORY_REALS_INTS
:
209 defineType("Real", getExprManager()->realType());
210 Parser::addOperator(kind::DIVISION
);
211 addOperator(kind::TO_INTEGER
, "to_int");
212 addOperator(kind::IS_INTEGER
, "is_int");
213 addOperator(kind::TO_REAL
, "to_real");
214 // falling through on purpose, to add Ints part of Reals_Ints
216 defineType("Int", getExprManager()->integerType());
217 addArithmeticOperators();
218 addOperator(kind::INTS_DIVISION
, "div");
219 addOperator(kind::INTS_MODULUS
, "mod");
220 addOperator(kind::ABS
, "abs");
221 Parser::addOperator(kind::DIVISIBLE
);
225 defineType("Real", getExprManager()->realType());
226 addArithmeticOperators();
227 Parser::addOperator(kind::DIVISION
);
230 case THEORY_QUANTIFIERS
:
234 addOperator(kind::UNION
, "union");
235 addOperator(kind::INTERSECTION
, "intersection");
236 addOperator(kind::SETMINUS
, "setminus");
237 addOperator(kind::SUBSET
, "subset");
238 addOperator(kind::MEMBER
, "member");
239 addOperator(kind::SINGLETON
, "singleton");
240 addOperator(kind::INSERT
, "insert");
241 addOperator(kind::CARD
, "card");
242 addOperator(kind::COMPLEMENT
, "complement");
245 case THEORY_DATATYPES
:
246 Parser::addOperator(kind::APPLY_CONSTRUCTOR
);
247 Parser::addOperator(kind::APPLY_TESTER
);
248 Parser::addOperator(kind::APPLY_SELECTOR
);
249 Parser::addOperator(kind::APPLY_SELECTOR_TOTAL
);
253 defineType("String", getExprManager()->stringType());
254 defineType("Int", getExprManager()->integerType());
255 addStringOperators();
259 Parser::addOperator(kind::APPLY_UF
);
263 defineType("RoundingMode", getExprManager()->roundingModeType());
264 defineType("Float16", getExprManager()->mkFloatingPointType(5, 11));
265 defineType("Float32", getExprManager()->mkFloatingPointType(8, 24));
266 defineType("Float64", getExprManager()->mkFloatingPointType(11, 53));
267 defineType("Float128", getExprManager()->mkFloatingPointType(15, 113));
268 addFloatingPointOperators();
276 std::stringstream ss
;
277 ss
<< "internal error: unsupported theory " << theory
;
278 throw ParserException(ss
.str());
282 void Smt2::addOperator(Kind kind
, const std::string
& name
) {
283 Debug("parser") << "Smt2::addOperator( " << kind
<< ", " << name
<< " )"
285 Parser::addOperator(kind
);
286 operatorKindMap
[name
] = kind
;
289 Kind
Smt2::getOperatorKind(const std::string
& name
) const {
290 // precondition: isOperatorEnabled(name)
291 return operatorKindMap
.find(name
)->second
;
294 bool Smt2::isOperatorEnabled(const std::string
& name
) const {
295 return operatorKindMap
.find(name
) != operatorKindMap
.end();
298 bool Smt2::isTheoryEnabled(Theory theory
) const {
301 return d_logic
.isTheoryEnabled(theory::THEORY_ARRAY
);
302 case THEORY_BITVECTORS
:
303 return d_logic
.isTheoryEnabled(theory::THEORY_BV
);
306 case THEORY_DATATYPES
:
307 return d_logic
.isTheoryEnabled(theory::THEORY_DATATYPES
);
309 return d_logic
.isTheoryEnabled(theory::THEORY_ARITH
) &&
310 d_logic
.areIntegersUsed() && ( !d_logic
.areRealsUsed() );
312 return d_logic
.isTheoryEnabled(theory::THEORY_ARITH
) &&
313 ( !d_logic
.areIntegersUsed() ) && d_logic
.areRealsUsed();
314 case THEORY_REALS_INTS
:
315 return d_logic
.isTheoryEnabled(theory::THEORY_ARITH
) &&
316 d_logic
.areIntegersUsed() && d_logic
.areRealsUsed();
317 case THEORY_QUANTIFIERS
:
318 return d_logic
.isQuantified();
320 return d_logic
.isTheoryEnabled(theory::THEORY_SETS
);
322 return d_logic
.isTheoryEnabled(theory::THEORY_STRINGS
);
324 return d_logic
.isTheoryEnabled(theory::THEORY_UF
);
326 return d_logic
.isTheoryEnabled(theory::THEORY_FP
);
328 return d_logic
.isTheoryEnabled(theory::THEORY_SEP
);
330 std::stringstream ss
;
331 ss
<< "internal error: unsupported theory " << theory
;
332 throw ParserException(ss
.str());
336 bool Smt2::logicIsSet() {
340 Expr
Smt2::getExpressionForNameAndType(const std::string
& name
, Type t
) {
341 if(sygus() && name
[0]=='-' &&
342 name
.find_first_not_of("0123456789", 1) == std::string::npos
) {
343 //allow unary minus in sygus
344 return getExprManager()->mkConst(Rational(name
));
345 }else if(isAbstractValue(name
)) {
346 return mkAbstractValue(name
);
348 return Parser::getExpressionForNameAndType(name
, t
);
352 Expr
Smt2::mkDefineFunRec(
353 const std::string
& fname
,
354 const std::vector
<std::pair
<std::string
, Type
> >& sortedVarNames
,
356 std::vector
<Expr
>& flattenVars
)
358 std::vector
<Type
> sorts
;
359 for (const std::pair
<std::string
, CVC4::Type
>& svn
: sortedVarNames
)
361 sorts
.push_back(svn
.second
);
364 // make the flattened function type, add bound variables
365 // to flattenVars if the defined function was given a function return type.
366 Type ft
= mkFlatFunctionType(sorts
, t
, flattenVars
);
369 return mkVar(fname
, ft
, ExprManager::VAR_FLAG_NONE
, true);
372 void Smt2::pushDefineFunRecScope(
373 const std::vector
<std::pair
<std::string
, Type
> >& sortedVarNames
,
375 const std::vector
<Expr
>& flattenVars
,
377 std::vector
<Expr
>& bvs
,
380 pushScope(bindingLevel
);
382 std::vector
<Expr
> f_app
;
383 f_app
.push_back(func
);
384 // bound variables are those that are explicitly named in the preamble
385 // of the define-fun(s)-rec command, we define them here
386 for (const std::pair
<std::string
, CVC4::Type
>& svn
: sortedVarNames
)
388 Expr v
= mkBoundVar(svn
.first
, svn
.second
);
393 bvs
.insert(bvs
.end(), flattenVars
.begin(), flattenVars
.end());
395 // make the function application
398 // it has no arguments
403 func_app
= getExprManager()->mkExpr(kind::APPLY_UF
, f_app
);
409 d_logic
= LogicInfo();
410 operatorKindMap
.clear();
411 d_lastNamedTerm
= std::pair
<Expr
, std::string
>();
412 this->Parser::reset();
414 if( !strictModeEnabled() ) {
415 addTheory(Smt2::THEORY_CORE
);
419 void Smt2::resetAssertions() {
420 this->Parser::reset();
423 void Smt2::setLogic(std::string name
) {
426 // non-smt2-standard sygus logic names go here (http://sygus.seas.upenn.edu/files/sygus.pdf Section 3.2)
427 if(name
== "Arrays") {
429 }else if(name
== "Reals") {
435 if(logicIsForced()) {
436 d_logic
= getForcedLogic();
441 // if sygus is enabled, we must enable UF, datatypes, integer arithmetic and
444 // get unlocked copy, modify, copy and relock
445 LogicInfo
log(d_logic
.getUnlockedCopy());
446 log
.enableTheory(theory::THEORY_UF
);
447 log
.enableTheory(theory::THEORY_DATATYPES
);
448 log
.enableIntegers();
449 log
.enableHigherOrder();
454 // Core theory belongs to every logic
455 addTheory(THEORY_CORE
);
457 if(d_logic
.isTheoryEnabled(theory::THEORY_UF
)) {
458 addTheory(THEORY_UF
);
461 if(d_logic
.isTheoryEnabled(theory::THEORY_ARITH
)) {
462 if(d_logic
.areIntegersUsed()) {
463 if(d_logic
.areRealsUsed()) {
464 addTheory(THEORY_REALS_INTS
);
466 addTheory(THEORY_INTS
);
468 } else if(d_logic
.areRealsUsed()) {
469 addTheory(THEORY_REALS
);
473 if(d_logic
.isTheoryEnabled(theory::THEORY_ARRAY
)) {
474 addTheory(THEORY_ARRAYS
);
477 if(d_logic
.isTheoryEnabled(theory::THEORY_BV
)) {
478 addTheory(THEORY_BITVECTORS
);
481 if(d_logic
.isTheoryEnabled(theory::THEORY_DATATYPES
)) {
482 addTheory(THEORY_DATATYPES
);
485 if(d_logic
.isTheoryEnabled(theory::THEORY_SETS
)) {
486 addTheory(THEORY_SETS
);
489 if(d_logic
.isTheoryEnabled(theory::THEORY_STRINGS
)) {
490 addTheory(THEORY_STRINGS
);
493 if(d_logic
.isQuantified()) {
494 addTheory(THEORY_QUANTIFIERS
);
497 if (d_logic
.isTheoryEnabled(theory::THEORY_FP
)) {
498 addTheory(THEORY_FP
);
501 if (d_logic
.isTheoryEnabled(theory::THEORY_SEP
)) {
502 addTheory(THEORY_SEP
);
505 }/* Smt2::setLogic() */
507 void Smt2::setInfo(const std::string
& flag
, const SExpr
& sexpr
) {
511 void Smt2::setOption(const std::string
& flag
, const SExpr
& sexpr
) {
515 void Smt2::checkThatLogicIsSet() {
516 if( ! logicIsSet() ) {
517 if(strictModeEnabled()) {
518 parseError("set-logic must appear before this point.");
520 warning("No set-logic command was given before this point.");
521 warning("CVC4 will make all theories available.");
522 warning("Consider setting a stricter logic for (likely) better performance.");
523 warning("To suppress this warning in the future use (set-logic ALL).");
527 Command
* c
= new SetBenchmarkLogicCommand("ALL");
534 /* The include are managed in the lexer but called in the parser */
535 // Inspired by http://www.antlr3.org/api/C/interop.html
537 static bool newInputStream(const std::string
& filename
, pANTLR3_LEXER lexer
) {
538 Debug("parser") << "Including " << filename
<< std::endl
;
539 // Create a new input stream and take advantage of built in stream stacking
540 // in C target runtime.
542 pANTLR3_INPUT_STREAM in
;
543 #ifdef CVC4_ANTLR3_OLD_INPUT_STREAM
544 in
= antlr3AsciiFileStreamNew((pANTLR3_UINT8
) filename
.c_str());
545 #else /* CVC4_ANTLR3_OLD_INPUT_STREAM */
546 in
= antlr3FileStreamNew((pANTLR3_UINT8
) filename
.c_str(), ANTLR3_ENC_8BIT
);
547 #endif /* CVC4_ANTLR3_OLD_INPUT_STREAM */
549 Debug("parser") << "Can't open " << filename
<< std::endl
;
552 // Same thing as the predefined PUSHSTREAM(in);
553 lexer
->pushCharStream(lexer
, in
);
555 //lexer->rec->state->tokenStartCharIndex = -10;
556 //lexer->emit(lexer);
558 // Note that the input stream is not closed when it EOFs, I don't bother
559 // to do it here, but it is up to you to track streams created like this
560 // and destroy them when the whole parse session is complete. Remember that you
561 // don't want to do this until all tokens have been manipulated all the way through
562 // your tree parsers etc as the token does not store the text it just refers
563 // back to the input stream and trying to get the text for it will abort if you
564 // close the input stream too early.
566 //TODO what said before
570 void Smt2::includeFile(const std::string
& filename
) {
571 // security for online version
572 if(!canIncludeFile()) {
573 parseError("include-file feature was disabled for this run.");
577 AntlrInput
* ai
= static_cast<AntlrInput
*>(getInput());
578 pANTLR3_LEXER lexer
= ai
->getAntlr3Lexer();
579 // get the name of the current stream "Does it work inside an include?"
580 const std::string inputName
= ai
->getInputStreamName();
582 // Find the directory of the current input file
584 size_t pos
= inputName
.rfind('/');
585 if(pos
!= std::string::npos
) {
586 path
= std::string(inputName
, 0, pos
+ 1);
588 path
.append(filename
);
589 if(!newInputStream(path
, lexer
)) {
590 parseError("Couldn't open include file `" + path
+ "'");
594 Expr
Smt2::mkSygusVar(const std::string
& name
, const Type
& type
, bool isPrimed
) {
595 Expr e
= mkBoundVar(name
, type
);
596 d_sygusVars
.push_back(e
);
597 d_sygusVarPrimed
[e
] = false;
599 std::stringstream ss
;
601 Expr ep
= mkBoundVar(ss
.str(), type
);
602 d_sygusVars
.push_back(ep
);
603 d_sygusVarPrimed
[ep
] = true;
608 void Smt2::mkSygusConstantsForType( const Type
& type
, std::vector
<CVC4::Expr
>& ops
) {
609 if( type
.isInteger() ){
610 ops
.push_back(getExprManager()->mkConst(Rational(0)));
611 ops
.push_back(getExprManager()->mkConst(Rational(1)));
612 }else if( type
.isBitVector() ){
613 unsigned sz
= ((BitVectorType
)type
).getSize();
614 BitVector
bval0(sz
, (unsigned int)0);
615 ops
.push_back( getExprManager()->mkConst(bval0
) );
616 BitVector
bval1(sz
, (unsigned int)1);
617 ops
.push_back( getExprManager()->mkConst(bval1
) );
618 }else if( type
.isBoolean() ){
619 ops
.push_back(getExprManager()->mkConst(true));
620 ops
.push_back(getExprManager()->mkConst(false));
625 // 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)
626 // This method may also add new elements pairwise into datatypes/sorts/ops/cnames/cargs in the case of non-flat gterms.
627 void Smt2::processSygusGTerm( CVC4::SygusGTerm
& sgt
, int index
,
628 std::vector
< CVC4::Datatype
>& datatypes
,
629 std::vector
< CVC4::Type
>& sorts
,
630 std::vector
< std::vector
<CVC4::Expr
> >& ops
,
631 std::vector
< std::vector
<std::string
> >& cnames
,
632 std::vector
< std::vector
< std::vector
< CVC4::Type
> > >& cargs
,
633 std::vector
< bool >& allow_const
,
634 std::vector
< std::vector
< std::string
> >& unresolved_gterm_sym
,
635 std::vector
<CVC4::Expr
>& sygus_vars
,
636 std::map
< CVC4::Type
, CVC4::Type
>& sygus_to_builtin
, std::map
< CVC4::Type
, CVC4::Expr
>& sygus_to_builtin_expr
,
637 CVC4::Type
& ret
, bool isNested
){
638 if( sgt
.d_gterm_type
==SygusGTerm::gterm_op
|| sgt
.d_gterm_type
==SygusGTerm::gterm_let
){
639 Debug("parser-sygus") << "Add " << sgt
.d_expr
<< " to datatype " << index
<< std::endl
;
641 Kind newKind
= kind::UNDEFINED_KIND
;
642 //convert to UMINUS if one child of MINUS
643 if( sgt
.d_children
.size()==1 && sgt
.d_expr
==getExprManager()->operatorOf(kind::MINUS
) ){
644 oldKind
= kind::MINUS
;
645 newKind
= kind::UMINUS
;
648 //convert to IFF if boolean EQUAL
649 if( sgt.d_expr==getExprManager()->operatorOf(kind::EQUAL) ){
650 Type ctn = sgt.d_children[0].d_type;
651 std::map< CVC4::Type, CVC4::Type >::iterator it = sygus_to_builtin.find( ctn );
652 if( it != sygus_to_builtin.end() && it->second.isBoolean() ){
653 oldKind = kind::EQUAL;
658 if( newKind
!=kind::UNDEFINED_KIND
){
659 Expr newExpr
= getExprManager()->operatorOf(newKind
);
660 Debug("parser-sygus") << "Replace " << sgt
.d_expr
<< " with " << newExpr
<< std::endl
;
661 sgt
.d_expr
= newExpr
;
662 std::string oldName
= kind::kindToString(oldKind
);
663 std::string newName
= kind::kindToString(newKind
);
665 if((pos
= sgt
.d_name
.find(oldName
, pos
)) != std::string::npos
){
666 sgt
.d_name
.replace(pos
, oldName
.length(), newName
);
669 ops
[index
].push_back( sgt
.d_expr
);
670 cnames
[index
].push_back( sgt
.d_name
);
671 cargs
[index
].push_back( std::vector
< CVC4::Type
>() );
672 for( unsigned i
=0; i
<sgt
.d_children
.size(); i
++ ){
673 std::stringstream ss
;
674 ss
<< datatypes
[index
].getName() << "_" << ops
[index
].size() << "_arg_" << i
;
675 std::string sub_dname
= ss
.str();
676 //add datatype for child
678 pushSygusDatatypeDef( null_type
, sub_dname
, datatypes
, sorts
, ops
, cnames
, cargs
, allow_const
, unresolved_gterm_sym
);
679 int sub_dt_index
= datatypes
.size()-1;
682 processSygusGTerm( sgt
.d_children
[i
], sub_dt_index
, datatypes
, sorts
, ops
, cnames
, cargs
, allow_const
, unresolved_gterm_sym
,
683 sygus_vars
, sygus_to_builtin
, sygus_to_builtin_expr
, sub_ret
, true );
684 //process the nested gterm (either pop the last datatype, or flatten the argument)
685 Type tt
= processSygusNestedGTerm( sub_dt_index
, sub_dname
, datatypes
, sorts
, ops
, cnames
, cargs
, allow_const
, unresolved_gterm_sym
,
686 sygus_to_builtin
, sygus_to_builtin_expr
, sub_ret
);
687 cargs
[index
].back().push_back(tt
);
689 //if let, must create operator
690 if( sgt
.d_gterm_type
==SygusGTerm::gterm_let
){
691 processSygusLetConstructor( sgt
.d_let_vars
, index
, datatypes
, sorts
, ops
, cnames
, cargs
,
692 sygus_vars
, sygus_to_builtin
, sygus_to_builtin_expr
);
694 }else if( sgt
.d_gterm_type
==SygusGTerm::gterm_constant
){
695 if( sgt
.getNumChildren()!=0 ){
696 parseError("Bad syntax for Sygus Constant.");
698 std::vector
< Expr
> consts
;
699 mkSygusConstantsForType( sgt
.d_type
, consts
);
700 Debug("parser-sygus") << "...made " << consts
.size() << " constants." << std::endl
;
701 for( unsigned i
=0; i
<consts
.size(); i
++ ){
702 std::stringstream ss
;
704 Debug("parser-sygus") << "...add for constant " << ss
.str() << std::endl
;
705 ops
[index
].push_back( consts
[i
] );
706 cnames
[index
].push_back( ss
.str() );
707 cargs
[index
].push_back( std::vector
< CVC4::Type
>() );
709 allow_const
[index
] = true;
710 }else if( sgt
.d_gterm_type
==SygusGTerm::gterm_variable
|| sgt
.d_gterm_type
==SygusGTerm::gterm_input_variable
){
711 if( sgt
.getNumChildren()!=0 ){
712 parseError("Bad syntax for Sygus Variable.");
714 Debug("parser-sygus") << "...process " << sygus_vars
.size() << " variables." << std::endl
;
715 for( unsigned i
=0; i
<sygus_vars
.size(); i
++ ){
716 if( sygus_vars
[i
].getType()==sgt
.d_type
){
717 std::stringstream ss
;
719 Debug("parser-sygus") << "...add for variable " << ss
.str() << std::endl
;
720 ops
[index
].push_back( sygus_vars
[i
] );
721 cnames
[index
].push_back( ss
.str() );
722 cargs
[index
].push_back( std::vector
< CVC4::Type
>() );
725 }else if( sgt
.d_gterm_type
==SygusGTerm::gterm_nested_sort
){
727 }else if( sgt
.d_gterm_type
==SygusGTerm::gterm_unresolved
){
729 if( isUnresolvedType(sgt
.d_name
) ){
730 ret
= getSort(sgt
.d_name
);
732 //nested, unresolved symbol...fail
733 std::stringstream ss
;
734 ss
<< "Cannot handle nested unresolved symbol " << sgt
.d_name
<< std::endl
;
735 parseError(ss
.str());
738 //will resolve when adding constructors
739 unresolved_gterm_sym
[index
].push_back(sgt
.d_name
);
741 }else if( sgt
.d_gterm_type
==SygusGTerm::gterm_ignore
){
746 bool Smt2::pushSygusDatatypeDef( Type t
, std::string
& dname
,
747 std::vector
< CVC4::Datatype
>& datatypes
,
748 std::vector
< CVC4::Type
>& sorts
,
749 std::vector
< std::vector
<CVC4::Expr
> >& ops
,
750 std::vector
< std::vector
<std::string
> >& cnames
,
751 std::vector
< std::vector
< std::vector
< CVC4::Type
> > >& cargs
,
752 std::vector
< bool >& allow_const
,
753 std::vector
< std::vector
< std::string
> >& unresolved_gterm_sym
){
755 datatypes
.push_back(Datatype(dname
));
756 ops
.push_back(std::vector
<Expr
>());
757 cnames
.push_back(std::vector
<std::string
>());
758 cargs
.push_back(std::vector
<std::vector
<CVC4::Type
> >());
759 allow_const
.push_back(false);
760 unresolved_gterm_sym
.push_back(std::vector
< std::string
>());
764 bool Smt2::popSygusDatatypeDef( std::vector
< CVC4::Datatype
>& datatypes
,
765 std::vector
< CVC4::Type
>& sorts
,
766 std::vector
< std::vector
<CVC4::Expr
> >& ops
,
767 std::vector
< std::vector
<std::string
> >& cnames
,
768 std::vector
< std::vector
< std::vector
< CVC4::Type
> > >& cargs
,
769 std::vector
< bool >& allow_const
,
770 std::vector
< std::vector
< std::string
> >& unresolved_gterm_sym
){
772 datatypes
.pop_back();
776 allow_const
.pop_back();
777 unresolved_gterm_sym
.pop_back();
781 Type
Smt2::processSygusNestedGTerm( int sub_dt_index
, std::string
& sub_dname
, std::vector
< CVC4::Datatype
>& datatypes
,
782 std::vector
< CVC4::Type
>& sorts
,
783 std::vector
< std::vector
<CVC4::Expr
> >& ops
,
784 std::vector
< std::vector
<std::string
> >& cnames
,
785 std::vector
< std::vector
< std::vector
< CVC4::Type
> > >& cargs
,
786 std::vector
< bool >& allow_const
,
787 std::vector
< std::vector
< std::string
> >& unresolved_gterm_sym
,
788 std::map
< CVC4::Type
, CVC4::Type
>& sygus_to_builtin
,
789 std::map
< CVC4::Type
, CVC4::Expr
>& sygus_to_builtin_expr
, Type sub_ret
) {
791 Debug("parser-sygus") << "Argument is ";
793 //then, it is the datatype we constructed, which should have a single constructor
794 t
= mkUnresolvedType(sub_dname
);
795 Debug("parser-sygus") << "inline flattening of (auxiliary, local) datatype " << t
<< std::endl
;
796 Debug("parser-sygus") << ": to compute type, construct ground term witnessing the grammar, #cons=" << cargs
[sub_dt_index
].size() << std::endl
;
797 if( cargs
[sub_dt_index
].empty() ){
798 parseError(std::string("Internal error : datatype for nested gterm does not have a constructor."));
800 Expr sop
= ops
[sub_dt_index
][0];
802 if( sop
.getKind() != kind::BUILTIN
&& ( sop
.isConst() || cargs
[sub_dt_index
][0].empty() ) ){
803 curr_t
= sop
.getType();
804 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
;
805 sygus_to_builtin_expr
[t
] = sop
;
806 //store that term sop has dedicated sygus type t
807 if( d_sygus_bound_var_type
.find( sop
)==d_sygus_bound_var_type
.end() ){
808 d_sygus_bound_var_type
[sop
] = t
;
811 std::vector
< Expr
> children
;
812 if( sop
.getKind() != kind::BUILTIN
){
813 children
.push_back( sop
);
815 for( unsigned i
=0; i
<cargs
[sub_dt_index
][0].size(); i
++ ){
816 std::map
< CVC4::Type
, CVC4::Expr
>::iterator it
= sygus_to_builtin_expr
.find( cargs
[sub_dt_index
][0][i
] );
817 if( it
==sygus_to_builtin_expr
.end() ){
818 if( sygus_to_builtin
.find( cargs
[sub_dt_index
][0][i
] )==sygus_to_builtin
.end() ){
819 std::stringstream ss
;
820 ss
<< "Missing builtin type for type " << cargs
[sub_dt_index
][0][i
] << "!" << std::endl
;
821 ss
<< "Builtin types are currently : " << std::endl
;
822 for( std::map
< CVC4::Type
, CVC4::Type
>::iterator itb
= sygus_to_builtin
.begin(); itb
!= sygus_to_builtin
.end(); ++itb
){
823 ss
<< " " << itb
->first
<< " -> " << itb
->second
<< std::endl
;
825 parseError(ss
.str());
827 Type bt
= sygus_to_builtin
[cargs
[sub_dt_index
][0][i
]];
828 Debug("parser-sygus") << ": child " << i
<< " introduce type elem for " << cargs
[sub_dt_index
][0][i
] << " " << bt
<< std::endl
;
829 std::stringstream ss
;
830 ss
<< t
<< "_x_" << i
;
831 Expr bv
= mkBoundVar(ss
.str(), bt
);
832 children
.push_back( bv
);
833 d_sygus_bound_var_type
[bv
] = cargs
[sub_dt_index
][0][i
];
835 Debug("parser-sygus") << ": child " << i
<< " existing sygus to builtin expr : " << it
->second
<< std::endl
;
836 children
.push_back( it
->second
);
839 Kind sk
= sop
.getKind() != kind::BUILTIN
? kind::APPLY
: getExprManager()->operatorToKind(sop
);
840 Debug("parser-sygus") << ": operator " << sop
<< " with " << sop
.getKind() << " " << sk
<< std::endl
;
841 Expr e
= getExprManager()->mkExpr( sk
, children
);
842 Debug("parser-sygus") << ": constructed " << e
<< ", which has type " << e
.getType() << std::endl
;
843 curr_t
= e
.getType();
844 sygus_to_builtin_expr
[t
] = e
;
846 sorts
[sub_dt_index
] = curr_t
;
847 sygus_to_builtin
[t
] = curr_t
;
849 Debug("parser-sygus") << "simple argument " << t
<< std::endl
;
850 Debug("parser-sygus") << "...removing " << datatypes
.back().getName() << std::endl
;
851 //otherwise, datatype was unecessary
852 //pop argument datatype definition
853 popSygusDatatypeDef( datatypes
, sorts
, ops
, cnames
, cargs
, allow_const
, unresolved_gterm_sym
);
858 void Smt2::processSygusLetConstructor( std::vector
< CVC4::Expr
>& let_vars
,
860 std::vector
< CVC4::Datatype
>& datatypes
,
861 std::vector
< CVC4::Type
>& sorts
,
862 std::vector
< std::vector
<CVC4::Expr
> >& ops
,
863 std::vector
< std::vector
<std::string
> >& cnames
,
864 std::vector
< std::vector
< std::vector
< CVC4::Type
> > >& cargs
,
865 std::vector
<CVC4::Expr
>& sygus_vars
,
866 std::map
< CVC4::Type
, CVC4::Type
>& sygus_to_builtin
,
867 std::map
< CVC4::Type
, CVC4::Expr
>& sygus_to_builtin_expr
) {
868 std::vector
< CVC4::Expr
> let_define_args
;
870 int dindex
= cargs
[index
].size()-1;
871 Debug("parser-sygus") << "Process let constructor for datatype " << datatypes
[index
].getName() << ", #subtypes = " << cargs
[index
][dindex
].size() << std::endl
;
872 for( unsigned i
=0; i
<cargs
[index
][dindex
].size(); i
++ ){
873 Debug("parser-sygus") << " " << i
<< " : " << cargs
[index
][dindex
][i
] << std::endl
;
874 if( i
+1==cargs
[index
][dindex
].size() ){
875 std::map
< CVC4::Type
, CVC4::Expr
>::iterator it
= sygus_to_builtin_expr
.find( cargs
[index
][dindex
][i
] );
876 if( it
!=sygus_to_builtin_expr
.end() ){
877 let_body
= it
->second
;
879 std::stringstream ss
;
880 ss
<< datatypes
[index
].getName() << "_body";
881 let_body
= mkBoundVar(ss
.str(), sygus_to_builtin
[cargs
[index
][dindex
][i
]]);
882 d_sygus_bound_var_type
[let_body
] = cargs
[index
][dindex
][i
];
886 Debug("parser-sygus") << std::endl
;
887 Debug("parser-sygus") << "Body is " << let_body
<< std::endl
;
888 Debug("parser-sygus") << "# let vars = " << let_vars
.size() << std::endl
;
889 for( unsigned i
=0; i
<let_vars
.size(); i
++ ){
890 Debug("parser-sygus") << " let var " << i
<< " : " << let_vars
[i
] << " " << let_vars
[i
].getType() << std::endl
;
891 let_define_args
.push_back( let_vars
[i
] );
894 Debug("parser-sygus") << "index = " << index << ", start index = " << start_index << ", #Current datatypes = " << datatypes.size() << std::endl;
895 for( unsigned i=start_index; i<datatypes.size(); i++ ){
896 Debug("parser-sygus") << " datatype " << i << " : " << datatypes[i].getName() << ", #cons = " << cargs[i].size() << std::endl;
897 if( !cargs[i].empty() ){
898 Debug("parser-sygus") << " operator 0 is " << ops[i][0] << std::endl;
899 Debug("parser-sygus") << " cons 0 has " << cargs[i][0].size() << " sub fields." << std::endl;
900 for( unsigned j=0; j<cargs[i][0].size(); j++ ){
901 Type bt = sygus_to_builtin[cargs[i][0][j]];
902 Debug("parser-sygus") << " cons 0, selector " << j << " : " << cargs[i][0][j] << " " << bt << std::endl;
907 //last argument is the return, pop
908 cargs
[index
][dindex
].pop_back();
909 collectSygusLetArgs( let_body
, cargs
[index
][dindex
], let_define_args
);
911 Debug("parser-sygus") << "Make define-fun with " << cargs
[index
][dindex
].size() << " arguments..." << std::endl
;
912 std::vector
<CVC4::Type
> fsorts
;
913 for( unsigned i
=0; i
<cargs
[index
][dindex
].size(); i
++ ){
914 Debug("parser-sygus") << " " << i
<< " : " << let_define_args
[i
] << " " << let_define_args
[i
].getType() << " " << cargs
[index
][dindex
][i
] << std::endl
;
915 fsorts
.push_back(let_define_args
[i
].getType());
918 Type ft
= getExprManager()->mkFunctionType(fsorts
, let_body
.getType());
919 std::stringstream ss
;
920 ss
<< datatypes
[index
].getName() << "_let";
921 Expr let_func
= mkFunction(ss
.str(), ft
, ExprManager::VAR_FLAG_DEFINED
);
922 d_sygus_defined_funs
.push_back( let_func
);
923 preemptCommand( new DefineFunctionCommand(ss
.str(), let_func
, let_define_args
, let_body
) );
925 ops
[index
].pop_back();
926 ops
[index
].push_back( let_func
);
927 cnames
[index
].pop_back();
928 cnames
[index
].push_back(ss
.str());
930 //mark function as let constructor
931 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() );
932 d_sygus_let_func_to_body
[let_func
] = let_body
;
933 d_sygus_let_func_to_num_input_vars
[let_func
] = let_vars
.size();
937 void Smt2::collectSygusLetArgs( CVC4::Expr e
, std::vector
< CVC4::Type
>& sygusArgs
, std::vector
< CVC4::Expr
>& builtinArgs
) {
938 if( e
.getKind()==kind::BOUND_VARIABLE
){
939 if( std::find( builtinArgs
.begin(), builtinArgs
.end(), e
)==builtinArgs
.end() ){
940 builtinArgs
.push_back( e
);
941 sygusArgs
.push_back( d_sygus_bound_var_type
[e
] );
942 if( d_sygus_bound_var_type
[e
].isNull() ){
943 std::stringstream ss
;
944 ss
<< "While constructing body of let gterm, can't map " << e
<< " to sygus type." << std::endl
;
945 parseError(ss
.str());
949 for( unsigned i
=0; i
<e
.getNumChildren(); i
++ ){
950 collectSygusLetArgs( e
[i
], sygusArgs
, builtinArgs
);
955 void Smt2::setSygusStartIndex( std::string
& fun
, int startIndex
,
956 std::vector
< CVC4::Datatype
>& datatypes
,
957 std::vector
< CVC4::Type
>& sorts
,
958 std::vector
< std::vector
<CVC4::Expr
> >& ops
) {
960 CVC4::Datatype tmp_dt
= datatypes
[0];
961 Type tmp_sort
= sorts
[0];
962 std::vector
< Expr
> tmp_ops
;
963 tmp_ops
.insert( tmp_ops
.end(), ops
[0].begin(), ops
[0].end() );
964 datatypes
[0] = datatypes
[startIndex
];
965 sorts
[0] = sorts
[startIndex
];
967 ops
[0].insert( ops
[0].end(), ops
[startIndex
].begin(), ops
[startIndex
].end() );
968 datatypes
[startIndex
] = tmp_dt
;
969 sorts
[startIndex
] = tmp_sort
;
970 ops
[startIndex
].clear();
971 ops
[startIndex
].insert( ops
[startIndex
].begin(), tmp_ops
.begin(), tmp_ops
.end() );
972 }else if( startIndex
<0 ){
973 std::stringstream ss
;
974 ss
<< "warning: no symbol named Start for synth-fun " << fun
<< std::endl
;
979 void Smt2::mkSygusDatatype( CVC4::Datatype
& dt
, std::vector
<CVC4::Expr
>& ops
,
980 std::vector
<std::string
>& cnames
, std::vector
< std::vector
< CVC4::Type
> >& cargs
,
981 std::vector
<std::string
>& unresolved_gterm_sym
,
982 std::map
< CVC4::Type
, CVC4::Type
>& sygus_to_builtin
) {
983 Debug("parser-sygus") << "Making sygus datatype " << dt
.getName() << std::endl
;
984 Debug("parser-sygus") << " add constructors..." << std::endl
;
986 Debug("parser-sygus") << "SMT2 sygus parser : Making constructors for sygus datatype " << dt
.getName() << std::endl
;
987 Debug("parser-sygus") << " add constructors..." << std::endl
;
988 for (unsigned i
= 0, size
= cnames
.size(); i
< size
; i
++)
991 bool is_dup_op
= false;
992 for (unsigned j
= 0; j
< i
; j
++)
994 if( ops
[i
]==ops
[j
] ){
996 if( cargs
[i
].size()==cargs
[j
].size() ){
998 for( unsigned k
=0; k
<cargs
[i
].size(); k
++ ){
999 if( cargs
[i
][k
]!=cargs
[j
][k
] ){
1010 Debug("parser-sygus") << "SYGUS CONS " << i
<< " : ";
1012 Debug("parser-sygus") << "--> Duplicate gterm : " << ops
[i
] << std::endl
;
1013 ops
.erase( ops
.begin() + i
, ops
.begin() + i
+ 1 );
1014 cnames
.erase( cnames
.begin() + i
, cnames
.begin() + i
+ 1 );
1015 cargs
.erase( cargs
.begin() + i
, cargs
.begin() + i
+ 1 );
1020 std::shared_ptr
<SygusPrintCallback
> spc
;
1023 Debug("parser-sygus") << "--> Duplicate gterm operator : " << ops
[i
]
1025 // make into define-fun
1026 std::vector
<Type
> ltypes
;
1027 for (unsigned j
= 0, size
= cargs
[i
].size(); j
< size
; j
++)
1029 ltypes
.push_back(sygus_to_builtin
[cargs
[i
][j
]]);
1031 std::vector
<Expr
> largs
;
1032 Expr lbvl
= makeSygusBoundVarList(dt
, i
, ltypes
, largs
);
1034 // make the let_body
1035 std::vector
<Expr
> children
;
1036 if (ops
[i
].getKind() != kind::BUILTIN
)
1038 children
.push_back(ops
[i
]);
1040 children
.insert(children
.end(), largs
.begin(), largs
.end());
1041 Kind sk
= ops
[i
].getKind() != kind::BUILTIN
1043 : getExprManager()->operatorToKind(ops
[i
]);
1044 Expr body
= getExprManager()->mkExpr(sk
, children
);
1045 // replace by lambda
1046 ops
[i
] = getExprManager()->mkExpr(kind::LAMBDA
, lbvl
, body
);
1047 Debug("parser-sygus") << " ...replace op : " << ops
[i
] << std::endl
;
1048 // callback prints as the expression
1049 spc
= std::make_shared
<printer::SygusExprPrintCallback
>(body
, largs
);
1053 std::map
<Expr
, Expr
>::iterator it
=
1054 d_sygus_let_func_to_body
.find(ops
[i
]);
1055 if (it
!= d_sygus_let_func_to_body
.end())
1057 Debug("parser-sygus") << "--> Let expression " << ops
[i
] << std::endl
;
1058 Expr let_body
= it
->second
;
1059 std::vector
<Expr
> let_args
= d_sygus_let_func_to_vars
[ops
[i
]];
1060 unsigned let_num_input_args
=
1061 d_sygus_let_func_to_num_input_vars
[ops
[i
]];
1062 // the operator is just the body for the arguments
1063 std::vector
<Type
> ltypes
;
1064 for (unsigned j
= 0, size
= let_args
.size(); j
< size
; j
++)
1066 ltypes
.push_back(let_args
[j
].getType());
1068 std::vector
<Expr
> largs
;
1069 Expr lbvl
= makeSygusBoundVarList(dt
, i
, ltypes
, largs
);
1070 Expr sbody
= let_body
.substitute(let_args
, largs
);
1071 ops
[i
] = getExprManager()->mkExpr(kind::LAMBDA
, lbvl
, sbody
);
1072 Debug("parser-sygus") << " ...replace op : " << ops
[i
] << std::endl
;
1073 // callback prints as a let expression
1074 spc
= std::make_shared
<printer::SygusLetExprPrintCallback
>(
1075 let_body
, let_args
, let_num_input_args
);
1077 else if (ops
[i
].getType().isBitVector() && ops
[i
].isConst())
1079 Debug("parser-sygus") << "--> Bit-vector constant " << ops
[i
] << " ("
1080 << cnames
[i
] << ")" << std::endl
;
1081 // Since there are multiple output formats for bit-vectors and
1082 // we are required by sygus standards to print in the exact input
1083 // format given by the user, we use a print callback to custom print
1085 spc
= std::make_shared
<printer::SygusNamedPrintCallback
>(cnames
[i
]);
1087 else if (isDefinedFunction(ops
[i
]))
1089 Debug("parser-sygus") << "--> Defined function " << ops
[i
]
1091 // turn f into (lammbda (x) (f x))
1092 // in a degenerate case, ops[i] may be a defined constant,
1093 // in which case we do not replace by a lambda.
1094 if (ops
[i
].getType().isFunction())
1096 std::vector
<Type
> ftypes
=
1097 static_cast<FunctionType
>(ops
[i
].getType()).getArgTypes();
1098 std::vector
<Expr
> largs
;
1099 Expr lbvl
= makeSygusBoundVarList(dt
, i
, ftypes
, largs
);
1100 largs
.insert(largs
.begin(), ops
[i
]);
1101 Expr body
= getExprManager()->mkExpr(kind::APPLY
, largs
);
1102 ops
[i
] = getExprManager()->mkExpr(kind::LAMBDA
, lbvl
, body
);
1103 Debug("parser-sygus") << " ...replace op : " << ops
[i
]
1108 ops
[i
] = getExprManager()->mkExpr(kind::APPLY
, ops
[i
]);
1109 Debug("parser-sygus") << " ...replace op : " << ops
[i
]
1112 // keep a callback to say it should be printed with the defined name
1113 spc
= std::make_shared
<printer::SygusNamedPrintCallback
>(cnames
[i
]);
1117 Debug("parser-sygus") << "--> Default case " << ops
[i
] << std::endl
;
1120 // must rename to avoid duplication
1121 std::stringstream ss
;
1122 ss
<< dt
.getName() << "_" << i
<< "_" << cnames
[i
];
1123 cnames
[i
] = ss
.str();
1124 // add the sygus constructor
1125 dt
.addSygusConstructor(ops
[i
], cnames
[i
], cargs
[i
], spc
);
1129 Debug("parser-sygus") << " add constructors for unresolved symbols..." << std::endl
;
1130 if( !unresolved_gterm_sym
.empty() ){
1131 std::vector
< Type
> types
;
1132 Debug("parser-sygus") << "...resolve " << unresolved_gterm_sym
.size() << " symbols..." << std::endl
;
1133 for( unsigned i
=0; i
<unresolved_gterm_sym
.size(); i
++ ){
1134 Debug("parser-sygus") << " resolve : " << unresolved_gterm_sym
[i
] << std::endl
;
1135 if( isUnresolvedType(unresolved_gterm_sym
[i
]) ){
1136 Debug("parser-sygus") << " it is an unresolved type." << std::endl
;
1137 Type t
= getSort(unresolved_gterm_sym
[i
]);
1138 if( std::find( types
.begin(), types
.end(), t
)==types
.end() ){
1139 types
.push_back( t
);
1141 Type bt
= dt
.getSygusType();
1142 Debug("parser-sygus") << ": make identity function for " << bt
<< ", argument type " << t
<< std::endl
;
1144 std::stringstream ss
;
1146 Expr var
= mkBoundVar(ss
.str(), bt
);
1147 std::vector
<Expr
> lchildren
;
1148 lchildren
.push_back(
1149 getExprManager()->mkExpr(kind::BOUND_VAR_LIST
, var
));
1150 lchildren
.push_back(var
);
1151 Expr id_op
= getExprManager()->mkExpr(kind::LAMBDA
, lchildren
);
1153 // empty sygus callback (should not be printed)
1154 std::shared_ptr
<SygusPrintCallback
> sepc
=
1155 std::make_shared
<printer::SygusEmptyPrintCallback
>();
1157 //make the sygus argument list
1158 std::vector
< Type
> id_carg
;
1159 id_carg
.push_back( t
);
1160 dt
.addSygusConstructor(id_op
, unresolved_gterm_sym
[i
], id_carg
, sepc
);
1163 ops
.push_back( id_op
);
1166 Debug("parser-sygus") << " ignore. (likely a free let variable)" << std::endl
;
1172 Expr
Smt2::makeSygusBoundVarList(Datatype
& dt
,
1174 const std::vector
<Type
>& ltypes
,
1175 std::vector
<Expr
>& lvars
)
1177 for (unsigned j
= 0, size
= ltypes
.size(); j
< size
; j
++)
1179 std::stringstream ss
;
1180 ss
<< dt
.getName() << "_x_" << i
<< "_" << j
;
1181 Expr v
= mkBoundVar(ss
.str(), ltypes
[j
]);
1184 return getExprManager()->mkExpr(kind::BOUND_VAR_LIST
, lvars
);
1187 const void Smt2::getSygusPrimedVars( std::vector
<Expr
>& vars
, bool isPrimed
) {
1188 for( unsigned i
=0; i
<d_sygusVars
.size(); i
++ ){
1189 Expr v
= d_sygusVars
[i
];
1190 std::map
< Expr
, bool >::iterator it
= d_sygusVarPrimed
.find( v
);
1191 if( it
!=d_sygusVarPrimed
.end() ){
1192 if( it
->second
==isPrimed
){
1193 vars
.push_back( v
);
1196 //should never happen
1201 const void Smt2::addSygusFunSymbol( Type t
, Expr synth_fun
){
1202 // When constructing the synthesis conjecture, we quantify on the
1203 // (higher-order) bound variable synth_fun.
1204 d_sygusFunSymbols
.push_back(synth_fun
);
1206 // Variable "sfproxy" carries the type, which may be a SyGuS datatype
1207 // that corresponds to syntactic restrictions.
1208 Expr sym
= mkBoundVar("sfproxy", t
);
1209 std::vector
< Expr
> attr_value
;
1210 attr_value
.push_back(sym
);
1212 new SetUserAttributeCommand("sygus-synth-grammar", synth_fun
, attr_value
);
1213 cattr
->setMuted(true);
1214 preemptCommand(cattr
);
1217 }/* CVC4::parser namespace */
1218 }/* CVC4 namespace */