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diff --git a/src/sat/bsat/satVec.h b/src/sat/bsat/satVec.h
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+/**************************************************************************************************
+MiniSat -- Copyright (c) 2005, Niklas Sorensson
+http://www.cs.chalmers.se/Cs/Research/FormalMethods/MiniSat/
+
+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.
+**************************************************************************************************/
+// Modified to compile with MS Visual Studio 6.0 by Alan Mishchenko
+
+#ifndef satVec_h
+#define satVec_h
+
+#include <stdlib.h>
+
+// vector of 32-bit intergers (added for 64-bit portability)
+struct veci_t {
+    int    size;
+    int    cap;
+    int*   ptr;
+};
+typedef struct veci_t veci;
+
+static inline void veci_new (veci* v) {
+    v->size = 0;
+    v->cap  = 4;
+    v->ptr  = (int*)malloc(sizeof(int)*v->cap);
+}
+
+static inline void   veci_delete (veci* v)          { free(v->ptr);   }
+static inline int*   veci_begin  (veci* v)          { return v->ptr;  }
+static inline int    veci_size   (veci* v)          { return v->size; }
+static inline void   veci_resize (veci* v, int k)   { v->size = k;    } // only safe to shrink !!
+static inline void   veci_push   (veci* v, int e)
+{
+    if (v->size == v->cap) {
+        int newsize = v->cap * 2;//+1;
+        v->ptr = (int*)realloc(v->ptr,sizeof(int)*newsize);
+        v->cap = newsize; }
+    v->ptr[v->size++] = e;
+}
+
+
+// vector of 32- or 64-bit pointers
+struct vecp_t {
+    int    size;
+    int    cap;
+    void** ptr;
+};
+typedef struct vecp_t vecp;
+
+static inline void vecp_new (vecp* v) {
+    v->size = 0;
+    v->cap  = 4;
+    v->ptr  = (void**)malloc(sizeof(void*)*v->cap);
+}
+
+static inline void   vecp_delete (vecp* v)          { free(v->ptr);   }
+static inline void** vecp_begin  (vecp* v)          { return v->ptr;  }
+static inline int    vecp_size   (vecp* v)          { return v->size; }
+static inline void   vecp_resize (vecp* v, int   k) { v->size = k;    } // only safe to shrink !!
+static inline void   vecp_push   (vecp* v, void* e)
+{
+    if (v->size == v->cap) {
+        int newsize = v->cap * 2;//+1;
+        v->ptr = (void**)realloc(v->ptr,sizeof(void*)*newsize);
+        v->cap = newsize; }
+    v->ptr[v->size++] = e;
+}
+
+
+#endif