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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* Pool-based instantiation strategy |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__THEORY__QUANTIFIERS__INST_STRATEGY_POOL_H |
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#define CVC5__THEORY__QUANTIFIERS__INST_STRATEGY_POOL_H |
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#include "smt/env_obj.h" |
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#include "theory/quantifiers/quant_module.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace quantifiers { |
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/** |
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* Pool-based instantiation. This implements a strategy for instantiating |
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* quantifiers based on user-provided pool annotations. |
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* |
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* When check is invoked, this strategy considers each |
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* INST_POOL annotation on quantified formulas. For each annotation, it |
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* instantiates the associated quantified formula with the Cartesian |
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* product of terms currently in the pool, using efficient techniques for |
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* enumerating over tuples of terms, as implemented in the term tuple |
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* enumerator utilities (see quantifiers/term_tuple_enumerator.h). |
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*/ |
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class InstStrategyPool : public QuantifiersModule |
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{ |
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public: |
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InstStrategyPool(Env& env, |
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QuantifiersState& qs, |
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QuantifiersInferenceManager& qim, |
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QuantifiersRegistry& qr, |
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TermRegistry& tr); |
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~InstStrategyPool() {} |
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/** Presolve */ |
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void presolve() override; |
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/** Needs check. */ |
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bool needsCheck(Theory::Effort e) override; |
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/** Reset round. */ |
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void reset_round(Theory::Effort e) override; |
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/** Register quantified formula q */ |
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void registerQuantifier(Node q) override; |
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/** Check. |
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* Adds instantiations for all currently asserted |
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* quantified formulas via calls to process(...) |
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*/ |
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void check(Theory::Effort e, QEffort quant_e) override; |
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/** Identify. */ |
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std::string identify() const override; |
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private: |
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/** Process quantified formula with user pool */ |
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bool process(Node q, Node p, uint64_t& addedLemmas); |
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/** Map from quantified formulas to user pools */ |
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std::map<Node, std::vector<Node> > d_userPools; |
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}; |
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} // namespace quantifiers |
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} // namespace theory |
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} // namespace cvc5 |
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#endif |