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updates

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-07-26 15:31:49 +01:00
parent 8744c62fca
commit 60bb02b709
11 changed files with 120 additions and 35 deletions
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16
src/smt/theory_seq.cpp
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@ -5163,7 +5163,21 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
}
}
else if (m_util.str.is_contains(e, e1, e2)) {
if (is_true) {
expr_ref_vector disj(m);
if (m_seq_rewrite.reduce_contains(e1, e2, disj)) {
literal_vector lits;
literal lit = mk_literal(e);
lits.push_back(~lit);
for (expr* d : disj) {
lits.push_back(mk_literal(d));
}
++m_stats.m_add_axiom;
ctx.mk_th_axiom(get_id(), lits.size(), lits.c_ptr());
for (expr* d : disj) {
add_axiom(lit, ~mk_literal(d));
}
}
else if (is_true) {
expr_ref f1 = mk_skolem(m_indexof_left, e1, e2);
expr_ref f2 = mk_skolem(m_indexof_right, e1, e2);
f = mk_concat(f1, e2, f2);