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missing rewrite exposed by #5498

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This commit is contained in:
Nikolaj Bjorner 2021-08-25 06:34:27 -07:00
parent 17663acf75
commit f03d756e08
1 changed files with 6 additions and 0 deletions
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6
src/ast/rewriter/array_rewriter.cpp
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@ -695,6 +695,12 @@ br_status array_rewriter::mk_eq_core(expr * lhs, expr * rhs, expr_ref & result)
if (m_util.is_const(rhs) && m_util.is_store(lhs)) {
std::swap(lhs, rhs);
}
if (m_util.is_const(lhs, v) && m_util.is_store(rhs)) {
unsigned n = to_app(rhs)->get_num_args();
result = m().mk_and(m().mk_eq(lhs, to_app(rhs)->get_arg(0)),
m().mk_eq(v, to_app(rhs)->get_arg(n - 1)));
return BR_REWRITE2;
}
if (m_util.is_const(lhs, v) && m_util.is_const(rhs, w)) {
result = m().mk_eq(v, w);
return BR_REWRITE1;