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+/*********************                                                        */
+/*! \file miplib_trick.h
+ ** \verbatim
+ ** Top contributors (to current version):
+ **   Mathias Preiner
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2018 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 MIPLIB trick preprocessing pass
+ **
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H
+#define __CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H
+
+#include "preprocessing/preprocessing_pass.h"
+#include "preprocessing/preprocessing_pass_context.h"
+
+namespace CVC4 {
+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, uint32_t flags) 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();
+    ~Statistics();
+  };
+
+  Statistics d_statistics;
+
+  std::vector<Node> d_boolVars;
+};
+
+}  // namespace passes
+}  // namespace preprocessing
+}  // namespace CVC4
+
+#endif /* __CVC4__PREPROCESSING__PASSES__MIPLIB_TRICK_H */