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/******************************************************************************
* Top contributors (to current version):
* Andrew Reynolds, Morgan Deters, Mathias Preiner
*
* This file is part of the cvc5 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.
* ****************************************************************************
*
* quantifier relevance
*/
#include "cvc5_private.h"
#ifndef CVC5__THEORY__QUANT_RELEVANCE_H
#define CVC5__THEORY__QUANT_RELEVANCE_H
#include <map>
#include "theory/quantifiers/quant_util.h"
namespace cvc5 {
namespace theory {
namespace quantifiers {
/** QuantRelevance
*
* This class is used for implementing SinE-style heuristics
* (e.g. see Hoder et al. CADE 2011)
* This is enabled by the option --relevant-triggers.
*/
class QuantRelevance : public QuantifiersUtil
{
public:
/** constructor
* cr is whether relevance is computed by this class.
* if this is false, then all calls to getRelevance
* return -1.
*/
QuantRelevance(Env& env);
~QuantRelevance() {}
/** reset */
bool reset(Theory::Effort e) override { return true; }
/** register quantifier */
void registerQuantifier(Node q) override;
/** identify */
std::string identify() const override { return "QuantRelevance"; }
/** get number of quantifiers for symbol s */
size_t getNumQuantifiersForSymbol(Node s) const;
private:
/** map from quantifiers to symbols they contain */
std::map<Node, std::vector<Node> > d_syms;
/** map from symbols to quantifiers */
std::map<Node, std::vector<Node> > d_syms_quants;
/** relevance for quantifiers and symbols */
std::map<Node, int> d_relevance;
/** compute symbols */
void computeSymbols(Node n, std::vector<Node>& syms);
};
} // namespace quantifiers
} // namespace theory
} // namespace cvc5
#endif /* CVC5__THEORY__QUANT_RELEVANCE_H */
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