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/********************* */
/** smt_engine.cpp
** Original author: mdeters
** Major contributors: dejan
** Minor contributors (to current version): taking
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.
**
**/
#include "smt/smt_engine.h"
#include "expr/command.h"
#include "expr/node_builder.h"
#include "util/output.h"
#include "util/exception.h"
#include "util/options.h"
#include "prop/prop_engine.h"
using namespace CVC4::prop;
namespace CVC4 {
SmtEngine::SmtEngine(ExprManager* em, const Options* opts) throw() :
d_assertions(),
d_publicEm(em),
d_nm(em->getNodeManager()),
d_opts(opts)
{
d_de = new DecisionEngine();
d_te = new TheoryEngine();
d_prop = new PropEngine(opts, d_de, d_te);
}
SmtEngine::~SmtEngine() {
delete d_prop;
delete d_te;
delete d_de;
}
void SmtEngine::doCommand(Command* c) {
NodeManagerScope nms(d_nm);
c->invoke(this);
}
Node SmtEngine::preprocess(const Node& e) {
return e;
}
void SmtEngine::processAssertionList() {
for(unsigned i = 0; i < d_assertions.size(); ++i) {
d_prop->assertFormula(d_assertions[i]);
}
d_assertions.clear();
}
Result SmtEngine::check() {
Debug("smt") << "SMT check()" << std::endl;
processAssertionList();
return d_prop->solve();
}
Result SmtEngine::quickCheck() {
Debug("smt") << "SMT quickCheck()" << std::endl;
processAssertionList();
return Result(Result::VALIDITY_UNKNOWN);
}
void SmtEngine::addFormula(const Node& e) {
Debug("smt") << "push_back assertion " << e << std::endl;
d_assertions.push_back(e);
}
Result SmtEngine::checkSat(const BoolExpr& e) {
Debug("smt") << "SMT checkSat(" << e << ")" << std::endl;
NodeManagerScope nms(d_nm);
Node node_e = preprocess(e.getNode());
addFormula(node_e);
Result r = check().asSatisfiabilityResult();
Debug("smt") << "SMT checkSat(" << e << ") ==> " << r << std::endl;
return r;
}
Result SmtEngine::query(const BoolExpr& e) {
Debug("smt") << "SMT query(" << e << ")" << std::endl;
NodeManagerScope nms(d_nm);
Node node_e = preprocess(d_nm->mkNode(NOT, e.getNode()));
addFormula(node_e);
Result r = check().asValidityResult();
Debug("smt") << "SMT query(" << e << ") ==> " << r << std::endl;
return r;
}
Result SmtEngine::assertFormula(const BoolExpr& e) {
Debug("smt") << "SMT assertFormula(" << e << ")" << std::endl;
NodeManagerScope nms(d_nm);
Node node_e = preprocess(e.getNode());
addFormula(node_e);
return quickCheck().asValidityResult();
}
Expr SmtEngine::simplify(const Expr& e) {
Debug("smt") << "SMT simplify(" << e << ")" << std::endl;
Expr simplify(const Expr& e);
Unimplemented();
}
}/* CVC4 namespace */
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