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use interface for creating unary equalities

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-08-21 15:37:43 -07:00
parent 17fc438476
commit 4092302590
1 changed files with 7 additions and 2 deletions
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9
src/smt/theory_arith_core.h
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@ -590,11 +590,16 @@ namespace smt {
m_arith_eq_adapter.mk_axioms(ensure_enode(qr), ensure_enode(dividend));
// non-linear divisors/mod have to be flattened for the non-linear solver to understand the terms.
// to ensure this use the rewriter.
// to ensure this use the rewriter. This is a hack required to fix a latent bug that affects the
// legacy arithmetic solver broadly. It is not something that the newer arithmetic solver suffers from.
qr1 = qr;
s(qr1);
if (qr != qr1) {
mk_axiom(m.mk_eq(qr, qr1), false);
expr_ref eq(m.mk_eq(qr, qr1), m);
ctx.internalize(eq, false);
literal qeq = ctx.get_literal(eq);
ctx.mark_as_relevant(qeq);
ctx.mk_th_axiom(get_id(), 1, &qeq);
m_arith_eq_adapter.mk_axioms(ensure_enode(qr), ensure_enode(qr1));
}