add tactic to recognize small discrete domains and convert them into bit-vectors

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/tactic/arith/eq2bv_tactic.h

@@ -0,0 +1,34 @@
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+Module Name:
+
+    eq2bv_tactic.h
+
+Abstract:
+
+    Extract integer variables that are used as finite domain indicators.
+    The integer variables can only occur in equalities.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2015-8-19
+
+Notes:
+
+--*/
+#ifndef EQ2BV_TACTIC_H_
+#define EQ2BV_TACTIC_H_
+
+#include"params.h"
+class ast_manager;
+class tactic;
+
+tactic * mk_eq2bv_tactic(ast_manager & m);
+
+/*
+    ADD_TACTIC("eq2bv", "convert integer variables used as finite domain elements to bit-vectors.", "mk_eq2bv_tactic(m)")
+*/
+
+
+#endif