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/********************* */
/*! \file theory_arith.h
** \verbatim
** Top contributors (to current version):
** Tim King, Morgan Deters, Dejan Jovanovic
** This file is part of the CVC4 project.
** Copyright (c) 2009-2017 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Arithmetic theory.
** Arithmetic theory.
**/
#include "cvc4_private.h"
#pragma once
#include "theory/theory.h"
#include "expr/node.h"
#include "theory/arith/theory_arith_private_forward.h"
namespace CVC4 {
namespace theory {
namespace arith {
/**
* Implementation of QF_LRA.
* Based upon:
* http://research.microsoft.com/en-us/um/people/leonardo/cav06.pdf
*/
class TheoryArith : public Theory {
private:
friend class TheoryArithPrivate;
TheoryArithPrivate* d_internal;
TimerStat d_ppRewriteTimer;
public:
TheoryArith(context::Context* c, context::UserContext* u, OutputChannel& out,
Valuation valuation, const LogicInfo& logicInfo);
virtual ~TheoryArith();
/**
* Does non-context dependent setup for a node connected to a theory.
*/
void preRegisterTerm(TNode n) override;
Node expandDefinition(LogicRequest& logicRequest, Node node) override;
void setMasterEqualityEngine(eq::EqualityEngine* eq) override;
void check(Effort e) override;
bool needsCheckLastEffort() override;
void propagate(Effort e) override;
Node explain(TNode n) override;
bool getCurrentSubstitution(int effort,
std::vector<Node>& vars,
std::vector<Node>& subs,
std::map<Node, std::vector<Node> >& exp) override;
bool isExtfReduced(int effort,
Node n,
Node on,
std::vector<Node>& exp) override;
bool collectModelInfo(TheoryModel* m) override;
void shutdown() override {}
void presolve() override;
void notifyRestart() override;
PPAssertStatus ppAssert(TNode in, SubstitutionMap& outSubstitutions) override;
Node ppRewrite(TNode atom) override;
void ppStaticLearn(TNode in, NodeBuilder<>& learned) override;
std::string identify() const override { return std::string("TheoryArith"); }
EqualityStatus getEqualityStatus(TNode a, TNode b) override;
void addSharedTerm(TNode n) override;
Node getModelValue(TNode var) override;
std::pair<bool, Node> entailmentCheck(
TNode lit,
const EntailmentCheckParameters* params,
EntailmentCheckSideEffects* out) override;
};/* class TheoryArith */
}/* CVC4::theory::arith namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
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