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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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* Implementation of expression miner manager. |
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*/ |
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#include "theory/quantifiers/expr_miner_manager.h" |
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#include "options/quantifiers_options.h" |
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#include "smt/env.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace quantifiers { |
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ExpressionMinerManager::ExpressionMinerManager(Env& env) |
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: EnvObj(env), |
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d_doRewSynth(false), |
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d_doQueryGen(false), |
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d_doFilterLogicalStrength(false), |
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d_use_sygus_type(false), |
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d_tds(nullptr), |
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d_crd(env, |
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options::sygusRewSynthCheck(), |
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options::sygusRewSynthAccel(), |
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false), |
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d_qg(env), |
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d_sols(env), |
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d_sampler(env) |
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{ |
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} |
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void ExpressionMinerManager::initialize(const std::vector<Node>& vars, |
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TypeNode tn, |
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unsigned nsamples, |
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bool unique_type_ids) |
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{ |
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d_doRewSynth = false; |
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d_doQueryGen = false; |
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d_doFilterLogicalStrength = false; |
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d_sygus_fun = Node::null(); |
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d_use_sygus_type = false; |
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d_tds = nullptr; |
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// initialize the sampler |
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d_sampler.initialize(tn, vars, nsamples, unique_type_ids); |
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} |
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void ExpressionMinerManager::initializeSygus(TermDbSygus* tds, |
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Node f, |
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unsigned nsamples, |
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bool useSygusType) |
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{ |
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d_doRewSynth = false; |
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d_doQueryGen = false; |
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d_doFilterLogicalStrength = false; |
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d_sygus_fun = f; |
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d_use_sygus_type = useSygusType; |
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d_tds = tds; |
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// initialize the sampler |
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d_sampler.initializeSygus(d_tds, f, nsamples, useSygusType); |
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} |
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void ExpressionMinerManager::enableRewriteRuleSynth() |
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{ |
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if (d_doRewSynth) |
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{ |
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// already enabled |
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return; |
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} |
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d_doRewSynth = true; |
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std::vector<Node> vars; |
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d_sampler.getVariables(vars); |
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// initialize the candidate rewrite database |
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if (!d_sygus_fun.isNull()) |
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{ |
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Assert(d_tds != nullptr); |
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d_crd.initializeSygus(vars, d_tds, d_sygus_fun, &d_sampler); |
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} |
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else |
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{ |
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d_crd.initialize(vars, &d_sampler); |
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} |
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d_crd.enableExtendedRewriter(); |
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d_crd.setSilent(false); |
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} |
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void ExpressionMinerManager::enableQueryGeneration(unsigned deqThresh) |
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{ |
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if (d_doQueryGen) |
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{ |
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// already enabled |
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return; |
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} |
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d_doQueryGen = true; |
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std::vector<Node> vars; |
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d_sampler.getVariables(vars); |
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// must also enable rewrite rule synthesis |
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if (!d_doRewSynth) |
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{ |
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// initialize the candidate rewrite database, in silent mode |
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enableRewriteRuleSynth(); |
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d_crd.setSilent(true); |
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} |
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// initialize the query generator |
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d_qg.initialize(vars, &d_sampler); |
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d_qg.setThreshold(deqThresh); |
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} |
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void ExpressionMinerManager::enableFilterWeakSolutions() |
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{ |
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d_doFilterLogicalStrength = true; |
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std::vector<Node> vars; |
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d_sampler.getVariables(vars); |
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d_sols.initialize(vars, &d_sampler); |
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d_sols.setLogicallyStrong(true); |
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} |
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void ExpressionMinerManager::enableFilterStrongSolutions() |
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{ |
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d_doFilterLogicalStrength = true; |
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std::vector<Node> vars; |
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d_sampler.getVariables(vars); |
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d_sols.initialize(vars, &d_sampler); |
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d_sols.setLogicallyStrong(false); |
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} |
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bool ExpressionMinerManager::addTerm(Node sol, |
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std::ostream& out, |
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bool& rew_print) |
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{ |
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// set the builtin version |
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Node solb = sol; |
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if (d_use_sygus_type) |
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{ |
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solb = d_tds->sygusToBuiltin(sol); |
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} |
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// add to the candidate rewrite rule database |
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bool ret = true; |
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if (d_doRewSynth) |
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{ |
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Node rsol = d_crd.addTerm(sol, options::sygusRewSynthRec(), out, rew_print); |
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ret = (sol == rsol); |
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} |
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// a unique term, let's try the query generator |
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if (ret && d_doQueryGen) |
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{ |
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d_qg.addTerm(solb, out); |
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} |
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// filter based on logical strength |
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if (ret && d_doFilterLogicalStrength) |
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{ |
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ret = d_sols.addTerm(solb, out); |
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} |
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return ret; |
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} |
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bool ExpressionMinerManager::addTerm(Node sol, std::ostream& out) |
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{ |
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bool rew_print = false; |
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return addTerm(sol, out, rew_print); |
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} |
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} // namespace quantifiers |
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} // namespace theory |
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} // namespace cvc5 |