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More failed literals

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This commit is contained in:
Miguel Neves 2017-10-13 09:15:28 -07:00
parent 56d785df94
commit 4394ce96ae
2 changed files with 69 additions and 44 deletions
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18
src/sat/sat_lookahead.h
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@ -231,11 +231,19 @@ namespace sat {
// ---------------------------------------
// truth values
inline bool is_fixed(literal l) const { return m_stamp[l.var()] >= m_level; }
inline bool is_fixed_at(literal l, unsigned level) const { return m_stamp[l.var()] >= level; }
inline bool is_fixed(literal l) const { return is_fixed_at(l, m_level); }
inline bool is_undef(literal l) const { return !is_fixed(l); }
inline bool is_undef(bool_var v) const { return m_stamp[v] < m_level; }
inline bool is_false(literal l) const { return is_fixed(l) && (bool)((m_stamp[l.var()] & 0x1) ^ l.sign()); } // even iff l.sign()
inline bool is_true(literal l) const { return is_fixed(l) && !(bool)((m_stamp[l.var()] & 0x1) ^ l.sign()); }
inline bool is_false_at(literal l, unsigned level) const {
return is_fixed_at(l, level) && (bool)((m_stamp[l.var()] & 0x1) ^ l.sign());
} // even iff l.sign()
inline bool is_false(literal l) const { return is_false_at(l, m_level); }
inline bool is_true_at(literal l, unsigned level) const {
return is_fixed_at(l, level) && !(bool)((m_stamp[l.var()] & 0x1) ^ l.sign());
}
inline bool is_true(literal l) const { return is_true_at(l, m_level); }
inline void set_true(literal l) { m_stamp[l.var()] = m_level + l.sign(); }
inline void set_undef(literal l) { m_stamp[l.var()] = 0; }
void set_level(literal d, literal s) { m_stamp[d.var()] = (m_stamp[s.var()] & ~0x1) + d.sign(); }
@ -492,10 +500,6 @@ namespace sat {
void dl_disable(literal l) { m_lits[l.index()].m_double_lookahead = m_istamp_id; }
bool dl_no_overflow(unsigned base) const { return base + 2 * m_lookahead.size() * static_cast<uint64>(m_config.m_dl_max_iterations + 1) < c_fixed_truth; }
bool is_fixed_at(literal lit, unsigned level) const {
return is_fixed(lit) && (!is_false(lit) || m_stamp[lit.var()] >= level);
}
unsigned do_double(literal l, unsigned& base);
unsigned double_look(literal l, unsigned& base);
void set_conflict() { TRACE("sat", tout << "conflict\n";); m_inconsistent = true; }