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/********************* */
/*! \file theory_quantifiers.h
** \verbatim
** Original author: ajreynol
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 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.\endverbatim
**
** \brief Theory of quantifiers.
**
** Theory of quantifiers.
**/
#include "cvc4_private.h"
#ifndef __CVC4__THEORY__QUANTIFIERS__THEORY_QUANTIFIERS_H
#define __CVC4__THEORY__QUANTIFIERS__THEORY_QUANTIFIERS_H
#include "theory/theory.h"
#include "util/hash.h"
#include "util/stats.h"
#include <ext/hash_set>
#include <iostream>
#include <map>
namespace CVC4 {
class TheoryEngine;
namespace theory {
namespace quantifiers {
class ModelEngine;
class InstantiationEngine;
class TheoryQuantifiers : public Theory {
private:
typedef context::CDHashMap< Node, bool, NodeHashFunction > BoolMap;
/** quantifiers that have been skolemized */
std::map< Node, bool > d_skolemized;
/** number of instantiations */
int d_numInstantiations;
int d_baseDecLevel;
/** number of restarts */
int d_numRestarts;
KEEP_STATISTIC(TimerStat, d_theoryTime, "theory::quantifiers::theoryTime");
public:
TheoryQuantifiers(context::Context* c, context::UserContext* u, OutputChannel& out, Valuation valuation, const LogicInfo& logicInfo, QuantifiersEngine* qe);
~TheoryQuantifiers();
void addSharedTerm(TNode t);
void notifyEq(TNode lhs, TNode rhs);
void preRegisterTerm(TNode n);
void presolve();
void check(Effort e);
void propagate(Effort level);
Node getValue(TNode n);
void collectModelInfo( TheoryModel* m );
void shutdown() { }
std::string identify() const { return std::string("TheoryQuantifiers"); }
bool flipDecision();
private:
void assertUniversal( Node n );
void assertExistential( Node n );
bool restart();
public:
void performCheck(Effort e);
};/* class TheoryQuantifiers */
}/* CVC4::theory::quantifiers namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif /* __CVC4__THEORY__QUANTIFIERS__THEORY_QUANTIFIERS_H */
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