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fix for unsound results reported in #313

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-11-16 22:59:07 -08:00
parent b8e4871d9e
commit c8f09fa955
4 changed files with 54 additions and 24 deletions
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7
src/ast/ast_util.h
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@ -107,6 +107,9 @@ expr * get_clause_literal(ast_manager & m, expr * cls, unsigned idx);
Return true if num_args == 0
*/
expr * mk_and(ast_manager & m, unsigned num_args, expr * const * args);
app * mk_and(ast_manager & m, unsigned num_args, app * const * args);
inline app_ref mk_and(app_ref_vector const& args) { return app_ref(mk_and(args.get_manager(), args.size(), args.c_ptr()), args.get_manager()); }
inline expr_ref mk_and(expr_ref_vector const& args) { return expr_ref(mk_and(args.get_manager(), args.size(), args.c_ptr()), args.get_manager()); }
/**
Return (or args[0] ... args[num_args-1]) if num_args >= 2
@ -114,6 +117,10 @@ expr * mk_and(ast_manager & m, unsigned num_args, expr * const * args);
Return false if num_args == 0
*/
expr * mk_or(ast_manager & m, unsigned num_args, expr * const * args);
app * mk_or(ast_manager & m, unsigned num_args, app * const * args);
inline app_ref mk_or(app_ref_vector const& args) { return app_ref(mk_or(args.get_manager(), args.size(), args.c_ptr()), args.get_manager()); }
inline expr_ref mk_or(expr_ref_vector const& args) { return expr_ref(mk_or(args.get_manager(), args.size(), args.c_ptr()), args.get_manager()); }
/**
Return a if arg = (not a)