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fix #1365. Filter MBQI instantiations for as-array terms that lead the array theory to return unknown and therefore block further instantiations. as-array terms are at this point almost always created from internal model values so quantifier instantiations with these have little value, other than instantiations of other paraameters that may indepdendently help

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2017-11-23 11:17:41 -08:00
parent c5f231acdf
commit 357b4b20fd
4 changed files with 10 additions and 16 deletions
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src/smt/smt_model_checker.h
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@ -22,6 +22,7 @@ Revision History:
#define SMT_MODEL_CHECKER_H_
#include "ast/ast.h"
#include "ast/array_decl_plugin.h"
#include "util/obj_hashtable.h"
#include "smt/params/qi_params.h"
#include "smt/params/smt_params.h"
@ -39,6 +40,7 @@ namespace smt {
class model_checker {
ast_manager & m; // _manager;
qi_params const & m_params;
array_util m_autil;
// copy of smt_params for auxiliary context.
// the idea is to use a different configuration for the aux context (e.g., disable relevancy)
scoped_ptr<smt_params> m_fparams;