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fix some argument-evaluation non-determinism, and mark the rest

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-10-28 18:01:44 -07:00
parent efd5d04af5
commit 51f6dfeb83
62 changed files with 765 additions and 120 deletions
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2
src/ast/rewriter/fpa_rewriter.cpp
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@ -494,6 +494,7 @@ br_status fpa_rewriter::mk_lt(expr * arg1, expr * arg2, expr_ref & result) {
}
if (m_util.is_ninf(arg1)) {
// -oo < arg2 --> not(arg2 = -oo) and not(arg2 = NaN)
//non-deterministic order no change: too complex
result = m().mk_and(m().mk_not(m().mk_eq(arg2, arg1)), mk_neq_nan(arg2));
return BR_REWRITE3;
}
@ -509,6 +510,7 @@ br_status fpa_rewriter::mk_lt(expr * arg1, expr * arg2, expr_ref & result) {
}
if (m_util.is_pinf(arg2)) {
// arg1 < +oo --> not(arg1 = +oo) and not(arg1 = NaN)
//non-deterministic order no change: too complex
result = m().mk_and(m().mk_not(m().mk_eq(arg1, arg2)), mk_neq_nan(arg1));
return BR_REWRITE3;
}