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fix 6800

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-08-17 15:18:22 -07:00
parent 50717fb655
commit 51df7b75ce
2 changed files with 3 additions and 1 deletions
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2
src/ast/rewriter/seq_axioms.cpp
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@ -538,6 +538,8 @@ namespace seq {
expr_ref t_eq_empty = mk_eq_empty(t);
expr_ref xsy = mk_concat(x, s, y);
verbose_stream() << s << " " << t << "\n";
// add_clause(~mk_eq(t, s), i_eq_0);
add_clause(cnt, i_eq_m1);
add_clause(~t_eq_empty, s_eq_empty, i_eq_m1);
add_clause(~s_eq_empty, mk_eq(i, mk_len(t)));

2
src/math/lp/int_solver.cpp
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@ -31,7 +31,7 @@ namespace lp {
lra.remove_fixed_vars_from_base();
lp_assert(lia.is_feasible());
for (unsigned j : lra.r_basis())
if (!lra.get_value(j).is_int())
if (!lra.get_value(j).is_int() && lra.column_is_int(j))
patch_basic_column(j);
if (!lia.has_inf_int()) {
lia.settings().stats().m_patches_success++;