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update assign to check fixed bits afterwards

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-01-15 09:18:51 -08:00
parent 42aad423c9
commit a68bbb53e4
1 changed files with 24 additions and 12 deletions
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34
src/sat/smt/polysat/viable.cpp
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@ -90,20 +90,31 @@ namespace polysat {
m_fixed_bits.init(v); m_fixed_bits.init(v);
m_explain.reset(); m_explain.reset();
init_overlaps(v); init_overlaps(v);
check_fixed_bits(v, value); bool first = true;
check_disequal_lin(v, value); while (true) {
check_equal_lin(v, value); for (auto const& [w, offset] : m_overlaps) {
for (auto const& [w, offset] : m_overlaps) { for (auto& layer : m_units[w].get_layers()) {
for (auto& layer : m_units[w].get_layers()) { entry* e = find_overlap(w, layer, value);
entry* e = find_overlap(w, layer, value); if (!e)
if (!e) continue;
continue;
m_explain.push_back({ e, value }); m_explain.push_back({ e, value });
m_explain_kind = explain_t::assignment; m_explain_kind = explain_t::assignment;
return false; return false;
}
} }
if (!first)
return true;
first = false;
if (!check_fixed_bits(v, value))
continue;
if (!check_disequal_lin(v, value))
continue;
if (!check_equal_lin(v, value))
continue;
break;
} }
return true; return true;
} }
@ -397,6 +408,7 @@ namespace polysat {
if (!intersect(v, e)) { if (!intersect(v, e)) {
display(verbose_stream()); display(verbose_stream());
display_explain(verbose_stream() << "explain\n"); display_explain(verbose_stream() << "explain\n");
UNREACHABLE();
SASSERT(false); SASSERT(false);
} }