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treat division by 0 as non-linearity, fix #2733

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-11-24 10:52:52 -08:00
parent ca2ad66d03
commit fad4356159
1 changed files with 3 additions and 3 deletions
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6
src/smt/theory_lra.cpp
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@ -476,7 +476,7 @@ class theory_lra::imp {
internalize_eq(v, v1);
}
else if (a.is_idiv(n, n1, n2)) {
if (!a.is_numeral(n2, r)) found_not_handled(n);
if (!a.is_numeral(n2, r) || r.is_zero()) found_not_handled(n);
m_idiv_terms.push_back(n);
app * mod = a.mk_mod(n1, n2);
ctx().internalize(mod, false);
@ -486,11 +486,11 @@ class theory_lra::imp {
if (!ctx().relevancy()) mk_idiv_mod_axioms(n1, n2);
}
else if (a.is_rem(n, n1, n2)) {
if (!a.is_numeral(n2, r)) found_not_handled(n);
if (!a.is_numeral(n2, r) || r.is_zero()) found_not_handled(n);
if (!ctx().relevancy()) mk_rem_axiom(n1, n2);
}
else if (a.is_div(n, n1, n2)) {
if (!a.is_numeral(n2, r)) found_not_handled(n);
if (!a.is_numeral(n2, r) || r.is_zero()) found_not_handled(n);
if (!ctx().relevancy()) mk_div_axiom(n1, n2);
}
else if (a.is_power(n)) {