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diff --git a/cryptominisat5/cryptominisat-5.6.3/src/completedetachreattacher.h b/cryptominisat5/cryptominisat-5.6.3/src/completedetachreattacher.h
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+/******************************************
+Copyright (c) 2016, Mate Soos
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+***********************************************/
+
+#ifndef __COMPLETE_DETACH_REATTACHER__
+#define __COMPLETE_DETACH_REATTACHER__
+
+#include "constants.h"
+#include "watched.h"
+#include "watcharray.h"
+
+namespace CMSat {
+
+class Solver;
+class Clause;
+
+/**
+@brief Helper class to completely detaches all(or only non-native) clauses
+
+Used in classes that (may) do a lot of clause-changning, in which case
+detaching&reattaching of clauses would be neccessary to do
+individually, which is \b very slow
+
+A main use-case is the following:
+-# detach all clauses
+-# play around with all clauses as desired. Cannot call solver.propagate() here
+-# attach again
+*/
+class CompleteDetachReatacher
+{
+    public:
+        explicit CompleteDetachReatacher(Solver* solver);
+        bool reattachLongs(bool removeStatsFrist = false);
+        void detach_nonbins_nontris();
+        void reattachLongsNoClean();
+
+    private:
+        void attachClauses(vector<ClOffset>& cs);
+        void cleanAndAttachClauses(
+            vector<ClOffset>& cs
+            , bool removeStatsFrist
+        );
+        bool clean_clause(Clause* cl);
+
+        class ClausesStay {
+            public:
+                ClausesStay() :
+                    redBins(0)
+                    , irredBins(0)
+                {}
+
+                ClausesStay& operator+=(const ClausesStay& other) {
+                    redBins += other.redBins;
+                    irredBins += other.irredBins;
+                    return *this;
+                }
+
+                uint64_t redBins;
+                uint64_t irredBins;
+        };
+        ClausesStay clearWatchNotBinNotTri(watch_subarray ws);
+
+        Solver* solver;
+};
+
+} //end namespace
+
+#endif //__COMPLETE_DETACH_REATTACHER__