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fix #2556, sign of of inequality is not restricted to -1, 0, 1, but can be -2, -3 etc

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-09-14 19:41:01 -04:00
parent 0c972b8bee
commit 0f20175bdd
3 changed files with 18 additions and 24 deletions
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4
src/smt/theory_seq.cpp
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@ -1962,7 +1962,7 @@ bool theory_seq::fixed_length(expr* len_e, bool is_zero) {
}
seq = mk_concat(elems.size(), elems.c_ptr());
}
TRACE("seq", tout << "Fixed: " << mk_pp(e, m) << " " << lo << "\n";);
TRACE("seq", tout << "Fixed: " << mk_bounded_pp(e, m, 2) << " " << lo << "\n";);
add_axiom(~mk_eq(len_e, m_autil.mk_numeral(lo, true), false), mk_seq_eq(seq, e));
if (!ctx.at_base_level()) {
m_trail_stack.push(push_replay(alloc(replay_fixed_length, m, len_e)));
@ -3880,7 +3880,7 @@ void theory_seq::display(std::ostream & out) const {
lower_bound(e, lo);
upper_bound(e, hi);
if (lo.is_pos() || !hi.is_minus_one()) {
out << mk_pp(e, m) << " [" << lo << ":" << hi << "]\n";
out << mk_bounded_pp(e, m, 3) << " [" << lo << ":" << hi << "]\n";
}
}