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set proper explain_kind in case of full interval

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This commit is contained in:
Jakob Rath 2024-05-14 19:11:05 +02:00
parent 47d93037f7
commit 962edfd03c
1 changed files with 6 additions and 2 deletions
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8
src/sat/smt/polysat/viable.cpp
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@ -122,6 +122,7 @@ namespace polysat {
}
find_t viable::find_viable(pvar v, rational& lo) {
// verbose_stream() << "find_viable v" << v << "\n";
m_explain.reset();
m_var = v;
m_num_bits = c.size(v);
@ -551,6 +552,7 @@ namespace polysat {
auto last = m_explain.back();
unsigned bw = last.e->bit_width;
if (last.e->interval.is_full()) {
// this may happen if full interval is created from check_equal_lin or check_disequal_lin
m_explain.reset();
m_explain.push_back(last);
return true;
@ -656,7 +658,7 @@ namespace polysat {
};
if (last.e->interval.is_full()) {
SASSERT(m_explain_kind == explain_t::none);
VERIFY(m_explain_kind == explain_t::none || m_explain_kind == explain_t::conflict);
explain_entry(last.e);
SASSERT(m_explain.size() == 1);
unmark();
@ -1571,7 +1573,7 @@ v0[20] := 1048561 v0 [20*v1 + 21 ; 20*v1 + 1[ := [5;-15[ src -20 <= 20*v1 + -1*
return find_t::multiple;
}
// verbose_stream() << "v" << v << " " << sc << " " << ne->interval << "\n";
// verbose_stream() << "add_unitary v" << v << " " << sc << " " << ne->interval << "\n"; display_one(verbose_stream() << " ", ne) << "\n";
TRACE("bv", tout << "v" << v << " " << sc << " " << ne->interval << "\n"; display_one(tout, ne) << "\n");
if (ne->interval.is_currently_empty()) {
@ -1674,6 +1676,7 @@ v0[20] := 1048561 v0 [20*v1 + 21 ; 20*v1 + 1[ := [5;-15[ src -20 <= 20*v1 + -1*
else {
ne->interval = eval_interval::full();
ne->coeff = 1;
m_explain_kind = explain_t::none;
m_explain.reset();
m_explain.push_back({ ne, rational::zero() });
m_fixed_bits.reset();
@ -1693,6 +1696,7 @@ v0[20] := 1048561 v0 [20*v1 + 21 ; 20*v1 + 1[ := [5;-15[ src -20 <= 20*v1 + -1*
intersect(v, ne);
}
if (ne->interval.is_full()) {
m_explain_kind = explain_t::none;
m_explain.reset();
m_explain.push_back({ ne, rational::zero() });
m_fixed_bits.reset();