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/****************************************************************************** |
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* Top contributors (to current version): |
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* Caleb Donovick, 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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* Remove rewrite rules, apply pre-skolemization to existential quantifiers. |
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* |
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* Calls the quantifier rewriter, removing rewrite rules and applying |
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* pre-skolemization to existential quantifiers |
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*/ |
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#include "preprocessing/passes/quantifiers_preprocess.h" |
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#include "base/output.h" |
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#include "preprocessing/assertion_pipeline.h" |
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#include "theory/quantifiers/quantifiers_rewriter.h" |
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#include "theory/rewriter.h" |
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namespace cvc5 { |
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namespace preprocessing { |
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namespace passes { |
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using namespace std; |
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using namespace cvc5::theory; |
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QuantifiersPreprocess::QuantifiersPreprocess(PreprocessingPassContext* preprocContext) |
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: PreprocessingPass(preprocContext, "quantifiers-preprocess"){}; |
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PreprocessingPassResult QuantifiersPreprocess::applyInternal( |
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AssertionPipeline* assertionsToPreprocess) |
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{ |
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size_t size = assertionsToPreprocess->size(); |
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for (size_t i = 0; i < size; ++i) |
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{ |
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Node prev = (*assertionsToPreprocess)[i]; |
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TrustNode trn = quantifiers::QuantifiersRewriter::preprocess(prev); |
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if (!trn.isNull()) |
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{ |
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Node next = trn.getNode(); |
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assertionsToPreprocess->replace(i, Rewriter::rewrite(next)); |
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Trace("quantifiers-preprocess") << "*** Pre-skolemize " << prev << endl; |
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Trace("quantifiers-preprocess") |
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<< " ...got " << (*assertionsToPreprocess)[i] << endl; |
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} |
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} |
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return PreprocessingPassResult::NO_CONFLICT; |
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} |
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} // namespace passes |
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} // namespace preprocessing |
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} // namespace cvc5 |