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fix #4794

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This commit is contained in:
Nikolaj Bjorner 2020-12-02 12:24:35 -08:00
parent 9156e355d8
commit 12198d13ac
10 changed files with 42 additions and 28 deletions
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15
src/smt/seq_regex.cpp
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@ -278,12 +278,15 @@ namespace smt {
return;
}
update_state_graph(r);
if (m_state_graph.is_dead(get_state_id(r))) {
STRACE("seq_regex_brief", tout << "(dead) ";);
th.add_axiom(~lit);
return;
auto info = re().get_info(r);
if (info.interpreted) {
update_state_graph(r);
if (m_state_graph.is_dead(get_state_id(r))) {
STRACE("seq_regex_brief", tout << "(dead) ";);
th.add_axiom(~lit);
return;
}
}
if (block_unfolding(lit, idx)) {