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/********************* */
/*! \file arith_static_learner.h
** \verbatim
** Top contributors (to current version):
** Tim King, Morgan Deters, Dejan Jovanovic
** This file is part of the CVC4 project.
** Copyright (c) 2009-2016 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 [[ Add one-line brief description here ]]
**
** [[ Add lengthier description here ]]
** \todo document this file
**/
#include "cvc4_private.h"
#ifndef __CVC4__THEORY__ARITH__ARITH_STATIC_LEARNER_H
#define __CVC4__THEORY__ARITH__ARITH_STATIC_LEARNER_H
#include <set>
#include "context/cdtrail_hashmap.h"
#include "context/context.h"
#include "theory/arith/arith_utilities.h"
#include "util/statistics_registry.h"
namespace CVC4 {
namespace theory {
namespace arith {
class ArithStaticLearner {
private:
/**
* Map from a node to it's minimum and maximum.
*/
typedef context::CDTrailHashMap<Node, DeltaRational, NodeHashFunction> CDNodeToMinMaxMap;
CDNodeToMinMaxMap d_minMap;
CDNodeToMinMaxMap d_maxMap;
public:
ArithStaticLearner(context::Context* userContext);
~ArithStaticLearner();
void staticLearning(TNode n, NodeBuilder<>& learned);
void addBound(TNode n);
private:
void process(TNode n, NodeBuilder<>& learned, const TNodeSet& defTrue);
void iteMinMax(TNode n, NodeBuilder<>& learned);
void iteConstant(TNode n, NodeBuilder<>& learned);
/** These fields are designed to be accessible to ArithStaticLearner methods. */
class Statistics {
public:
IntStat d_iteMinMaxApplications;
IntStat d_iteConstantApplications;
Statistics();
~Statistics();
};
Statistics d_statistics;
};/* class ArithStaticLearner */
}/* CVC4::theory::arith namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif /* __CVC4__THEORY__ARITH__ARITH_STATIC_LEARNER_H */
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