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propagate has-length over map/mapi

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This commit is contained in:
Nikolaj Bjorner 2022-07-12 20:50:28 -07:00
parent 8900db527f
commit 7d0c789af0
1 changed files with 16 additions and 17 deletions
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33
src/smt/theory_seq.cpp
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@ -2783,30 +2783,29 @@ bool theory_seq::get_length(expr* e, rational& val) {
todo.push_back(e1);
todo.push_back(e2);
}
else if (m_util.str.is_unit(c)) {
else if (m_util.str.is_unit(c))
val += rational(1);
}
else if (m_util.str.is_empty(c)) {
else if (m_util.str.is_empty(c))
continue;
}
else if (m_util.str.is_string(c, s)) {
else if (m_util.str.is_map(c, e1, e2))
todo.push_back(e2);
else if (m_util.str.is_mapi(c, e1, e2, c))
todo.push_back(c);
else if (m_util.str.is_string(c, s))
val += rational(s.length());
}
else if (!has_length(c)) {
len = mk_len(c);
else
continue;
len = mk_len(c);
if (!has_length(c)) {
add_axiom(mk_literal(m_autil.mk_ge(len, m_autil.mk_int(0))));
TRACE("seq", tout << "literal has no length " << mk_pp(c, m) << "\n";);
return false;
}
else {
len = mk_len(c);
if (m_arith_value.get_value(len, val1) && !val1.is_neg()) {
val += val1;
}
else {
TRACE("seq", tout << "length has not been internalized " << mk_pp(c, m) << "\n";);
return false;
}
else if (m_arith_value.get_value(len, val1) && !val1.is_neg())
val += val1;
else {
TRACE("seq", tout << "length has not been internalized " << mk_pp(c, m) << "\n";);
return false;
}
}
CTRACE("seq", !val.is_int(), tout << "length is not an integer\n";);