Z3 sources

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

lib/unit_subsumption_tactic.h

@@ -0,0 +1,30 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    unit_subsumption_tactic.h
+
+Abstract:
+
+    Simplify goal using subsumption based on unit propagation.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2012-9-6
+
+Notes:
+
+    Background: PDR generates several clauses that subsume each-other.
+    Simplify a goal assuming it is a conjunction of clauses.
+    Subsumed clauses are simplified by using unit-propagation 
+    It uses the smt_context for the solver.
+
+--*/
+#ifndef _UNIT_SUBSUMPTION_TACTIC_H_
+#define _UNIT_SUBSUMPTION_TACTIC_H_
+#include "tactic.h"
+
+tactic * mk_unit_subsumption_tactic(ast_manager & m, params_ref const & p = params_ref());
+
+#endif