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experimenting with alternative prefix encodings

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-02-24 08:55:22 -08:00
parent 8c68aed69e
commit 5679fb5d6b
2 changed files with 41 additions and 7 deletions
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src/smt/theory_seq.h
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@ -441,7 +441,7 @@ namespace smt {
void add_at_axiom(expr* n);
void add_in_re_axiom(expr* n);
literal mk_literal(expr* n);
literal mk_eq_empty(expr* n);
literal mk_eq_empty(expr* n, bool phase = true);
literal mk_seq_eq(expr* a, expr* b);
void tightest_prefix(expr* s, expr* x, literal lit, literal lit2 = null_literal);
expr_ref mk_sub(expr* a, expr* b);
@ -489,6 +489,7 @@ namespace smt {
bool add_suffix2suffix(expr* e, bool& change);
bool add_contains2contains(expr* e, bool& change);
void propagate_not_prefix(expr* e);
void propagate_not_prefix2(expr* e);
void propagate_not_suffix(expr* e);
void ensure_nth(literal lit, expr* s, expr* idx);
bool canonizes(bool sign, expr* e);