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/******************************************************************************
* Top contributors (to current version):
* Mathias Preiner, Morgan Deters, Andrew Reynolds
*
* This file is part of the cvc5 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.
* ****************************************************************************
*
* The MIPLIB trick preprocessing pass.
*/
#include "cvc5_private.h"
#ifndef CVC5__PREPROCESSING__PASSES__MIPLIB_TRICK_H
#define CVC5__PREPROCESSING__PASSES__MIPLIB_TRICK_H
#include "expr/node.h"
#include "preprocessing/preprocessing_pass.h"
namespace cvc5 {
namespace preprocessing {
namespace passes {
class MipLibTrick : public PreprocessingPass, public NodeManagerListener
{
public:
MipLibTrick(PreprocessingPassContext* preprocContext);
~MipLibTrick();
// NodeManagerListener callbacks to collect d_boolVars.
void nmNotifyNewVar(TNode n) override;
void nmNotifyNewSkolem(TNode n,
const std::string& comment,
uint32_t flags) override;
protected:
PreprocessingPassResult applyInternal(
AssertionPipeline* assertionsToPreprocess) override;
private:
struct Statistics
{
/** number of assertions removed by miplib pass */
IntStat d_numMiplibAssertionsRemoved;
Statistics(StatisticsRegistry& reg);
};
size_t removeFromConjunction(
Node& n, const std::unordered_set<unsigned long>& toRemove);
Statistics d_statistics;
std::vector<Node> d_boolVars;
};
} // namespace passes
} // namespace preprocessing
} // namespace cvc5
#endif /* CVC5__PREPROCESSING__PASSES__MIPLIB_TRICK_H */
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