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updates to simplifier

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-23 01:00:06 -04:00
parent 42749e7b22
commit ee6cfb8eef
9 changed files with 365 additions and 291 deletions
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6
src/sat/sat_model_converter.cpp
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@ -50,6 +50,7 @@ namespace sat {
}
if (!sat) {
m[lit.var()] = lit.sign() ? l_false : l_true;
// if (lit.var() == 258007) std::cout << "flip " << lit << " " << m[lit.var()] << " @ " << i << " of " << c << " from overall size " << sz << "\n";
}
}
}
@ -69,10 +70,10 @@ namespace sat {
for (literal l : it->m_clauses) {
if (l == null_literal) {
// end of clause
if (!sat) {
elim_stack* s = it->m_elim_stack[index];
if (!sat) {
m[it->var()] = var_sign ? l_false : l_true;
}
elim_stack* s = it->m_elim_stack[index];
if (s) {
process_stack(m, clause, s->stack());
}
@ -94,6 +95,7 @@ namespace sat {
else if (!sat && v != it->var() && m[v] == l_undef) {
// clause can be satisfied by assigning v.
m[v] = sign ? l_false : l_true;
// if (v == 258007) std::cout << "set undef " << v << " to " << m[v] << " in " << clause << "\n";
sat = true;
}
}