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/********************* */
/*! \file theory_preprocess.cpp
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds, Mathias Preiner, Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
** in the top-level source directory and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief The TheoryPreprocess preprocessing pass
**
** Calls Theory::preprocess(...) on every assertion of the formula.
**/
#include "preprocessing/passes/theory_preprocess.h"
#include "options/smt_options.h"
#include "preprocessing/assertion_pipeline.h"
#include "preprocessing/preprocessing_pass_context.h"
#include "proof/proof_manager.h"
#include "prop/prop_engine.h"
#include "theory/rewriter.h"
#include "theory/theory_engine.h"
namespace cvc5 {
namespace preprocessing {
namespace passes {
using namespace cvc5::theory;
TheoryPreprocess::TheoryPreprocess(PreprocessingPassContext* preprocContext)
: PreprocessingPass(preprocContext, "theory-preprocess"){};
PreprocessingPassResult TheoryPreprocess::applyInternal(
AssertionPipeline* assertions)
{
d_preprocContext->spendResource(ResourceManager::Resource::PreprocessStep);
IteSkolemMap& imap = assertions->getIteSkolemMap();
prop::PropEngine* propEngine = d_preprocContext->getPropEngine();
// Remove all of the ITE occurrences and normalize
for (unsigned i = 0, size = assertions->size(); i < size; ++i)
{
Node assertion = (*assertions)[i];
std::vector<theory::TrustNode> newAsserts;
std::vector<Node> newSkolems;
TrustNode trn = propEngine->preprocess(assertion, newAsserts, newSkolems);
if (!trn.isNull())
{
// process
assertions->replaceTrusted(i, trn);
}
Assert(newSkolems.size() == newAsserts.size());
for (unsigned j = 0, nnasserts = newAsserts.size(); j < nnasserts; j++)
{
imap[assertions->size()] = newSkolems[j];
assertions->pushBackTrusted(newAsserts[j]);
// new assertions have a dependence on the node (old pf architecture)
if (options::unsatCores())
{
ProofManager::currentPM()->addDependence(newAsserts[j].getProven(),
assertion);
}
}
}
return PreprocessingPassResult::NO_CONFLICT;
}
} // namespace passes
} // namespace preprocessing
} // namespace cvc5
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