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fix drat for units learned from binary clause resolution

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2019-01-12 00:12:20 -08:00
parent 63d480fd92
commit 836f156d54
6 changed files with 76 additions and 59 deletions
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src/sat/sat_clause.h
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@ -68,6 +68,7 @@ namespace sat {
bool is_learned() const { return m_learned; }
void set_learned(bool l) { SASSERT(is_learned() != l); m_learned = l; }
void shrink(unsigned num_lits);
void restore(unsigned num_lits);
bool strengthened() const { return m_strengthened; }
void mark_strengthened() { m_strengthened = true; update_approx(); }
void unmark_strengthened() { m_strengthened = false; }