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chain viables

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-01-03 20:22:01 -08:00
parent 1cdefa81b7
commit f805130c0b
3 changed files with 35 additions and 25 deletions
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13
src/ast/rewriter/arith_rewriter.cpp
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@ -546,6 +546,12 @@ br_status arith_rewriter::mk_le_ge_eq_core(expr * arg1, expr * arg2, op_kind kin
}
}
expr* x, * y;
if (kind == EQ && is_zero(arg2) && m_util.is_mul(arg1, x, y)) {
result = m.mk_or(m.mk_eq(x, arg2), m.mk_eq(y, arg2));
return BR_REWRITE2;
}
#define ANUM_LE_GE_EQ() { \
switch (kind) { \
case LE: result = am.le(v1, v2) ? m.mk_true() : m.mk_false(); return BR_DONE; \
@ -1293,7 +1299,12 @@ br_status arith_rewriter::mk_mod_core(expr * arg1, expr * arg2, expr_ref & resul
expr* x, *y;
if (is_num2 && v2.is_pos() && m_util.is_mul(arg1, x, y) && m_util.is_numeral(x, v1, is_int) && divides(v1, v2)) {
result = m_util.mk_mul(x, m_util.mk_mod(y, m_util.mk_int(v2/v1)));
return BR_REWRITE1;
return BR_REWRITE2;
}
if (is_num2 && v2 == 2 && m_util.is_mul(arg1, x, y)) {
result = m_util.mk_mul(m_util.mk_mod(x, m_util.mk_int(2)), m_util.mk_mod(y, m_util.mk_int(2)));
return BR_REWRITE2;
}
return BR_FAILED;