Z3 sources

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

lib/arith_bounds_tactic.h

@@ -0,0 +1,37 @@
+/*++
+Copyright (c) 2012 Microsoft Corporation
+
+Module Name:
+
+    arith_bounds_tactic.h
+
+Abstract:
+
+    Fast/rudimentary arithmetic subsumption tactic.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2012-9-6
+
+Notes:
+
+    Background: The Farkas learner in PDR generates tons 
+    of inequalities that contain redundancies.
+    It therefore needs a fast way to reduce these redundancies before
+    passing the results to routines that are more expensive.
+    The arith subsumption_strategy encapsulates a rudimentary 
+    routine for simplifying inequalities. Additional simplification
+    routines can be added here or composed with this strategy.
+
+    Note: The bound_manager subsumes some of the collection methods used
+    for assembling bounds, but it does not have a way to check for
+    subsumption of atoms. 
+
+--*/
+#ifndef _ARITH_BOUNDS_TACTIC_H_
+#define _ARITH_BOUNDS_TACTIC_H_
+#include "tactic.h"
+
+tactic * mk_arith_bounds_tactic(ast_manager & m, params_ref const & p = params_ref());
+
+#endif