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add filter to detect circumventing the default semantics of bit-vector division with the use of the sat-based bit-vector solver. Provides a way to fix issue #190

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-08-24 16:27:07 -07:00
parent ee5f1ad6b6
commit ef7915858b
3 changed files with 8 additions and 0 deletions
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src/tactic/probe.cpp
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@ -23,6 +23,7 @@ Revision History:
#include"arith_decl_plugin.h"
#include"bv_decl_plugin.h"
#include"goal_util.h"
#include"bv_rewriter.h"
class memory_probe : public probe {
public:
@ -303,6 +304,8 @@ public:
class is_qfbv_probe : public probe {
public:
virtual result operator()(goal const & g) {
bv_rewriter rw(g.m());
if (!rw.hi_div0()) return false;
return !test<is_non_qfbv_predicate>(g);
}
};