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fix #2962

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-10 11:43:13 -08:00
parent 26eb23c05b
commit f1abc71c35
11 changed files with 71 additions and 68 deletions
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8
src/smt/theory_lra.cpp
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@ -1088,6 +1088,13 @@ public:
if (is_arith(n1) && is_arith(n2) && n1 != n2) {
m_arith_eq_adapter.mk_axioms(n1, n2);
}
// internalization of ite expressions produces equalities of the form
// (= x (ite c x y)) and (= y (ite c x y))
// this step ensures that a shared enode is attached
// with the ite expression.
else if (m.is_ite(lhs) || m.is_ite(rhs)) {
m_arith_eq_adapter.mk_axioms(n1, n2);
}
}
void assign_eh(bool_var v, bool is_true) {
@ -1134,6 +1141,7 @@ public:
}
void apply_sort_cnstr(enode* n, sort*) {
TRACE("arith", tout << "sort constraint: " << mk_pp(n->get_owner(), m) << "\n";);
if (!th.is_attached_to_var(n)) {
theory_var v = mk_var(n->get_owner(), false);
register_theory_var_in_lar_solver(v);