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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, Morgan Deters, Mathias Preiner |
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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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* E-matching instantiation strategies. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__INST_STRATEGY_E_MATCHING_H |
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#define CVC5__INST_STRATEGY_E_MATCHING_H |
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#include "theory/quantifiers/ematching/inst_strategy.h" |
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#include "theory/quantifiers/ematching/trigger.h" |
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#include "theory/quantifiers/quant_relevance.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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* This class is responsible for instantiating quantifiers based on |
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* automatically generated triggers. It selects pattern terms, generates |
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* and manages triggers, and uses a strategy for processing them. |
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*/ |
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class InstStrategyAutoGenTriggers : public InstStrategy |
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{ |
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public: |
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enum |
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{ |
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RELEVANCE_NONE, |
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RELEVANCE_DEFAULT, |
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}; |
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private: |
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/** trigger generation strategy */ |
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options::TriggerSelMode d_tr_strategy; |
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/** regeneration */ |
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bool d_regenerate; |
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int d_regenerate_frequency; |
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/** (single,multi) triggers for each quantifier */ |
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std::map<Node, std::map<inst::Trigger*, bool> > d_auto_gen_trigger[2]; |
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std::map<Node, int> d_counter; |
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/** single, multi triggers for each quantifier */ |
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std::map<Node, std::vector<Node> > d_patTerms[2]; |
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std::map<Node, std::map<Node, bool> > d_patReqPol; |
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/** information about triggers */ |
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std::map<Node, bool> d_is_single_trigger; |
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std::map<Node, bool> d_single_trigger_gen; |
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std::map<Node, bool> d_made_multi_trigger; |
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// processed trigger this round |
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std::map<Node, std::map<inst::Trigger*, bool> > d_processed_trigger; |
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// instantiation no patterns |
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std::map<Node, std::vector<Node> > d_user_no_gen; |
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// number of trigger variables per quantifier |
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std::map<Node, unsigned> d_num_trigger_vars; |
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std::map<Node, Node> d_vc_partition[2]; |
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std::map<Node, Node> d_pat_to_mpat; |
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private: |
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/** process functions */ |
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void processResetInstantiationRound(Theory::Effort effort) override; |
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/** Process */ |
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InstStrategyStatus process(Node q, Theory::Effort effort, int e) override; |
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/** |
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* Generate triggers for quantified formula q. |
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*/ |
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void generateTriggers(Node q); |
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/** |
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* Generate pattern terms for quantified formula q. |
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*/ |
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bool generatePatternTerms(Node q); |
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void addPatternToPool(Node q, Node pat, unsigned num_fv, Node mpat); |
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void addTrigger(inst::Trigger* tr, Node f); |
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/** has user patterns */ |
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bool hasUserPatterns(Node q); |
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/** has user patterns */ |
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std::map<Node, bool> d_hasUserPatterns; |
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public: |
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InstStrategyAutoGenTriggers(inst::TriggerDatabase& td, |
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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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QuantRelevance* qrlv); |
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~InstStrategyAutoGenTriggers() {} |
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/** get auto-generated trigger */ |
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inst::Trigger* getAutoGenTrigger(Node q); |
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/** identify */ |
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std::string identify() const override |
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{ |
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return std::string("AutoGenTriggers"); |
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} |
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/** add pattern */ |
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void addUserNoPattern(Node q, Node pat); |
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private: |
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/** |
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* Pointer to the module that computes relevance of quantifiers, which is |
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* owned by the instantiation engine that owns this class. |
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*/ |
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QuantRelevance* d_quant_rel; |
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}; /* class InstStrategyAutoGenTriggers */ |
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} |
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} // namespace theory |
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} // namespace cvc5 |
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#endif |