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fix bogus axioms

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2025-10-24 13:35:41 +02:00
parent 5079b10597
commit 4068460a0f
3 changed files with 31 additions and 9 deletions
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6
src/ast/rewriter/finite_set_axioms.cpp
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@ -230,14 +230,18 @@ void finite_set_axioms::in_range_axiom(expr* r) {
if (!u.is_range(r, lo, hi))
return;
theory_axiom* ax = alloc(theory_axiom, m, "range-bounds");
arith_util a(m);
expr_ref lo_le_hi(a.mk_le(a.mk_sub(lo, hi), a.mk_int(0)), m);
m_rewriter(lo_le_hi);
ax->clause.push_back(m.mk_not(lo_le_hi));
ax->clause.push_back(u.mk_in(lo, r));
m_add_clause(ax);
ax = alloc(theory_axiom, m, "range-bounds", r);
ax->clause.push_back(m.mk_not(lo_le_hi));
ax->clause.push_back(u.mk_in(hi, r));
m_add_clause(ax);
arith_util a(m);
ax = alloc(theory_axiom, m, "range-bounds", r);
ax->clause.push_back(m.mk_not(u.mk_in(a.mk_add(hi, a.mk_int(1)), r)));
m_add_clause(ax);