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fix #3709

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-03 13:53:09 -07:00
parent b642686dca
commit a839017cc6
1 changed files with 4 additions and 3 deletions
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7
src/smt/theory_dense_diff_logic_def.h
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@ -927,8 +927,8 @@ namespace smt {
for (unsigned i = 0; i < num_nodes; ++i) {
enode * n = get_enode(i);
if (m_autil.is_zero(n->get_owner())) {
S.set_lower(v, mpq_inf(mpq(0), mpq(0)));
S.set_upper(v, mpq_inf(mpq(0), mpq(0)));
S.set_lower(i, mpq_inf(mpq(0), mpq(0)));
S.set_upper(i, mpq_inf(mpq(0), mpq(0)));
break;
}
}
@ -949,7 +949,8 @@ namespace smt {
vars[2] = base_var;
S.add_row(base_var, 3, vars.c_ptr(), coeffs.c_ptr());
// t - s <= w
// t - s - b = 0, b >= w
// =>
// t - s - b = 0, b <= w
numeral const& w = e.m_offset;
rational fin = w.get_rational().to_rational();
rational inf = w.get_infinitesimal().to_rational();