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tune axioms for derivatives

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-25 12:41:30 -07:00
parent 97b480ded3
commit 4e01d5b5c1
8 changed files with 207 additions and 65 deletions
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10
src/smt/theory_seq.cpp
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@ -1535,7 +1535,8 @@ bool theory_seq::internalize_term(app* term) {
return true;
}
if (ctx.get_fparams().m_seq_use_derivatives && m_util.str.is_in_re(term)) {
if (ctx.get_fparams().m_seq_use_derivatives &&
(m_util.str.is_in_re(term) || m_sk.is_accept(term))) {
bool_var bv = ctx.mk_bool_var(term);
ctx.set_var_theory(bv, get_id());
ctx.mark_as_relevant(bv);
@ -3053,7 +3054,12 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
}
else if (is_accept(e)) {
if (is_true) {
propagate_accept(lit, e);
if (ctx.get_fparams().m_seq_use_derivatives) {
m_regex.propagate_accept(lit);
}
else {
propagate_accept(lit, e);
}
}
}
else if (m_sk.is_step(e)) {