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fix #3926

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-13 14:43:27 -07:00
parent 299a6f4aee
commit 9f42338de8
2 changed files with 61 additions and 1 deletions
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2
src/ast/rewriter/seq_rewriter.h
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@ -24,6 +24,7 @@ Notes:
#include "ast/rewriter/rewriter_types.h"
#include "util/params.h"
#include "util/lbool.h"
#include "util/sign.h"
#include "math/automata/automaton.h"
#include "math/automata/symbolic_automata.h"
@ -141,6 +142,7 @@ class seq_rewriter {
bool cannot_contain_suffix(expr* a, expr* b);
bool is_suffix(expr* s, expr* offset, expr* len);
bool sign_is_determined(expr* len, sign& s);
bool set_empty(unsigned sz, expr* const* es, bool all, expr_ref_vector& lhs, expr_ref_vector& rhs);
bool is_subsequence(unsigned n, expr* const* l, unsigned m, expr* const* r,