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fixes in order lemmas and printing terms

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2020-03-23 11:18:56 -07:00
parent 4b8a063996
commit 38eca3b66a
9 changed files with 83 additions and 89 deletions
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44
src/math/lp/nla_monotone_lemmas.cpp
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@ -32,50 +32,6 @@ void monotone::monotonicity_lemma() {
monotonicity_lemma(c().emons()[v]);
}
}
void monotone::negate_abs_a_le_abs_b(lpvar a, lpvar b, bool strict) {
rational av = val(a);
rational as = rational(nla::rat_sign(av));
rational bv = val(b);
rational bs = rational(nla::rat_sign(bv));
TRACE("nla_solver", tout << "av = " << av << ", bv = " << bv << "\n";);
SASSERT(as*av <= bs*bv);
llc mod_s = strict? (llc::LE): (llc::LT);
mk_ineq(as, a, mod_s); // |a| <= 0 || |a| < 0
if (a != b) {
mk_ineq(bs, b, mod_s); // |b| <= 0 || |b| < 0
mk_ineq(as, a, -bs, b, llc::GT); // negate |aj| <= |bj|
}
}
void monotone::assert_abs_val_a_le_abs_var_b(
const monic& a,
const monic& b,
bool strict) {
lpvar aj = var(a);
lpvar bj = var(b);
rational av = val(aj);
rational as = rational(nla::rat_sign(av));
rational bv = val(bj);
rational bs = rational(nla::rat_sign(bv));
// TRACE("nla_solver", tout << "rmv = " << rmv << ", jv = " << jv << "\n";);
mk_ineq(as, aj, llc::LT); // |aj| < 0
mk_ineq(bs, bj, llc::LT); // |bj| < 0
mk_ineq(as, aj, -bs, bj, strict? llc::LT : llc::LE); // |aj| < |bj|
}
void monotone::negate_abs_a_lt_abs_b(lpvar a, lpvar b) {
rational av = val(a);
rational as = rational(nla::rat_sign(av));
rational bv = val(b);
rational bs = rational(nla::rat_sign(bv));
TRACE("nla_solver", tout << "av = " << av << ", bv = " << bv << "\n";);
SASSERT(as*av < bs*bv);
mk_ineq(as, a, llc::LT); // |aj| < 0
mk_ineq(bs, b, llc::LT); // |bj| < 0
mk_ineq(as, a, -bs, b, llc::GE); // negate |aj| < |bj|
}
void monotone::monotonicity_lemma(monic const& m) {
SASSERT(!check_monic(m));