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/********************* */
/*! \file arith_static_learner.h
** \verbatim
** Top contributors (to current version):
** Tim King, Dejan Jovanovic, Mathias Preiner
** This file is part of the CVC4 project.
** Copyright (c) 2009-2021 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 CVC5__THEORY__ARITH__ARITH_STATIC_LEARNER_H
#define CVC5__THEORY__ARITH__ARITH_STATIC_LEARNER_H
#include "context/cdhashmap.h"
#include "theory/arith/arith_utilities.h"
#include "theory/arith/delta_rational.h"
#include "util/statistics_registry.h"
namespace cvc5 {
namespace context {
class Context;
}
namespace theory {
namespace arith {
class ArithStaticLearner {
private:
/**
* Map from a node to it's minimum and maximum.
*/
typedef context::CDHashMap<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 */
} // namespace arith
} // namespace theory
} // namespace cvc5
#endif /* CVC5__THEORY__ARITH__ARITH_STATIC_LEARNER_H */
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