src/preprocessing/passes/miplib_trick.h

   1 /*********************                                                        */
   2 /*! \file miplib_trick.h
   3  ** \verbatim
   4  ** Top contributors (to current version):
   5  **   Mathias Preiner
   6  ** This file is part of the CVC4 project.
   7  ** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
   8  ** in the top-level source directory and their institutional affiliations.
   9  ** All rights reserved.  See the file COPYING in the top-level source
  10  ** directory for licensing information.\endverbatim
  11  **
  12  ** \brief The MIPLIB trick preprocessing pass
  13  **
  14  **/
  15
  16 #include "cvc4_private.h"
  17
  18 #ifndef CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H
  19 #define CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H
  20
  21 #include "expr/node.h"
  22 #include "preprocessing/preprocessing_pass.h"
  23
  24 namespace CVC4 {
  25 namespace preprocessing {
  26 namespace passes {
  27
  28 class MipLibTrick : public PreprocessingPass, public NodeManagerListener
  29 {
  30  public:
  31   MipLibTrick(PreprocessingPassContext* preprocContext);
  32   ~MipLibTrick();
  33
  34   // NodeManagerListener callbacks to collect d_boolVars.
  35   void nmNotifyNewVar(TNode n) override;
  36   void nmNotifyNewSkolem(TNode n,
  37                          const std::string& comment,
  38                          uint32_t flags) override;
  39
  40  protected:
  41   PreprocessingPassResult applyInternal(
  42       AssertionPipeline* assertionsToPreprocess) override;
  43
  44  private:
  45   struct Statistics
  46   {
  47     /** number of assertions removed by miplib pass */
  48     IntStat d_numMiplibAssertionsRemoved;
  49     Statistics();
  50     ~Statistics();
  51   };
  52
  53   Statistics d_statistics;
  54
  55   std::vector<Node> d_boolVars;
  56 };
  57
  58 }  // namespace passes
  59 }  // namespace preprocessing
  60 }  // namespace CVC4
  61
  62 #endif /* CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H */