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more rewrites for emptiness

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2020-05-22 09:56:08 -07:00
parent 5d6be3f17f
commit 82fb7573d7
2 changed files with 71 additions and 1 deletions
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2
src/ast/rewriter/seq_rewriter.h
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@ -178,6 +178,8 @@ class seq_rewriter {
br_status mk_re_loop(func_decl* f, unsigned num_args, expr* const* args, expr_ref& result);
br_status mk_re_range(expr* lo, expr* hi, expr_ref& result);
br_status lift_ite(func_decl* f, unsigned n, expr* const* args, expr_ref& result);
br_status reduce_re_eq(expr* a, expr* b, expr_ref& result);
br_status reduce_re_is_empty(expr* r, expr_ref& result);
br_status mk_bool_app_helper(bool is_and, unsigned n, expr* const* args, expr_ref& result);