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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 proof generator utility. |
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*/ |
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#include "proof/proof_generator.h" |
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#include <sstream> |
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#include "options/smt_options.h" |
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#include "proof/proof.h" |
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#include "proof/proof_node.h" |
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#include "proof/proof_node_algorithm.h" |
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namespace cvc5 { |
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std::ostream& operator<<(std::ostream& out, CDPOverwrite opol) |
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{ |
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switch (opol) |
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{ |
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case CDPOverwrite::ALWAYS: out << "ALWAYS"; break; |
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case CDPOverwrite::ASSUME_ONLY: out << "ASSUME_ONLY"; break; |
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case CDPOverwrite::NEVER: out << "NEVER"; break; |
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default: out << "CDPOverwrite:unknown"; break; |
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} |
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return out; |
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} |
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ProofGenerator::ProofGenerator() {} |
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ProofGenerator::~ProofGenerator() {} |
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std::shared_ptr<ProofNode> ProofGenerator::getProofFor(Node f) |
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{ |
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Unreachable() << "ProofGenerator::getProofFor: " << identify() |
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<< " has no implementation" << std::endl; |
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return nullptr; |
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} |
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bool ProofGenerator::addProofTo(Node f, |
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CDProof* pf, |
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CDPOverwrite opolicy, |
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bool doCopy) |
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{ |
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Trace("pfgen") << "ProofGenerator::addProofTo: " << f << "..." << std::endl; |
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Assert(pf != nullptr); |
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// plug in the proof provided by the generator, if it exists |
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std::shared_ptr<ProofNode> apf = getProofFor(f); |
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if (apf != nullptr) |
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{ |
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Trace("pfgen") << "...got proof " << *apf.get() << std::endl; |
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if (pf->addProof(apf, opolicy, doCopy)) |
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{ |
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Trace("pfgen") << "...success!" << std::endl; |
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return true; |
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} |
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Trace("pfgen") << "...failed to add proof" << std::endl; |
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} |
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else |
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{ |
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Trace("pfgen") << "...failed, no proof" << std::endl; |
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Assert(false) << "Failed to get proof from generator for fact " << f; |
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} |
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return false; |
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} |
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} // namespace cvc5 |