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remove option look_for_0_witness

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-08-07 09:01:49 -10:00 • committed by Lev Nachmanson
parent 0306eff692
commit 839594ac12
4 changed files with 19 additions and 23 deletions
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34
src/nlsat/nlsat_interval_set.cpp
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@ -703,7 +703,7 @@ namespace nlsat {
}
void interval_set_manager::pick_in_complement(interval_set const * s, bool is_int, anum & w, bool randomize, bool look_for_zero) {
void interval_set_manager::pick_in_complement(interval_set const * s, bool is_int, anum & w, bool randomize) {
SASSERT(!is_full(s));
if (s == nullptr) {
m_am.set(w, 0);
@ -711,24 +711,24 @@ namespace nlsat {
}
unsigned n = 0;
unsigned num = num_intervals(s);
if (look_for_zero) {
scoped_anum zero(m_am);
m_am.set(zero, 0);
bool available = true;
for (unsigned i = 0; i < num; ++i) {
int sgn = compare_interval_with_zero(s->m_intervals[i], zero, m_am);
if (sgn == 0) {
available = false;
break;
}
if (sgn > 0)
break;
}
if (available) {
m_am.set(w, 0);
return ;
// try to assign w to zero first to simplify the polynomials
scoped_anum zero(m_am);
m_am.set(zero, 0);
bool available = true;
for (unsigned i = 0; i < num; ++i) {
int sgn = compare_interval_with_zero(s->m_intervals[i], zero, m_am);
if (sgn == 0) {
available = false;
break;
}
if (sgn > 0)
break;
}
if (available) {
m_am.set(w, 0);
return ;
}
// cannot assign w to zero
if (!s->m_intervals[num-1].m_upper_inf) {
// upper is not oo
n++;