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/****************************************************************************** |
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* Top contributors (to current version): |
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* Mudathir Mohamed, Andrew Reynolds, Gereon Kremer |
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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 inference information utility. |
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*/ |
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#include "theory/bags/infer_info.h" |
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#include "theory/bags/inference_manager.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace bags { |
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InferInfo::InferInfo(TheoryInferenceManager* im, InferenceId id) |
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: TheoryInference(id), d_im(im) |
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{ |
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} |
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TrustNode InferInfo::processLemma(LemmaProperty& p) |
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{ |
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NodeManager* nm = NodeManager::currentNM(); |
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Node pnode = nm->mkAnd(d_premises); |
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Node lemma = nm->mkNode(kind::IMPLIES, pnode, d_conclusion); |
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// send lemmas corresponding to the skolems introduced |
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for (const auto& pair : d_skolems) |
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{ |
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Node n = pair.first.eqNode(pair.second); |
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TrustNode trustedLemma = TrustNode::mkTrustLemma(n, nullptr); |
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d_im->trustedLemma(trustedLemma, getId(), p); |
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} |
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Trace("bags::InferInfo::process") << (*this) << std::endl; |
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return TrustNode::mkTrustLemma(lemma, nullptr); |
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} |
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bool InferInfo::isTrivial() const |
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{ |
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Assert(!d_conclusion.isNull()); |
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return d_conclusion.isConst() && d_conclusion.getConst<bool>(); |
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} |
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bool InferInfo::isConflict() const |
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{ |
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Assert(!d_conclusion.isNull()); |
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return d_conclusion.isConst() && !d_conclusion.getConst<bool>(); |
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} |
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bool InferInfo::isFact() const |
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{ |
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Assert(!d_conclusion.isNull()); |
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TNode atom = |
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d_conclusion.getKind() == kind::NOT ? d_conclusion[0] : d_conclusion; |
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return !atom.isConst() && atom.getKind() != kind::OR; |
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} |
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std::ostream& operator<<(std::ostream& out, const InferInfo& ii) |
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{ |
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out << "(infer :id " << ii.getId() << std::endl; |
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out << ":conclusion " << ii.d_conclusion << std::endl; |
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if (!ii.d_premises.empty()) |
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{ |
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out << " :premise (" << ii.d_premises << ")" << std::endl; |
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} |
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out << ":skolems " << ii.d_skolems << std::endl; |
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out << ")"; |
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return out; |
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} |
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} // namespace bags |
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} // namespace theory |
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} // namespace cvc5 |