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bug fixes, prepare for retaining blocked clauses

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-19 22:19:05 -07:00
parent 636f740b1a
commit 76eed064eb
16 changed files with 333 additions and 234 deletions
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4
src/sat/sat_clause.h
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@ -46,6 +46,7 @@ namespace sat {
unsigned m_used:1;
unsigned m_frozen:1;
unsigned m_reinit_stack:1;
unsigned m_blocked;
unsigned m_inact_rounds:8;
unsigned m_glue:8;
unsigned m_psm:8; // transient field used during gc
@ -86,6 +87,9 @@ namespace sat {
unsigned inact_rounds() const { return m_inact_rounds; }
bool frozen() const { return m_frozen; }
void freeze() { SASSERT(is_learned()); SASSERT(!frozen()); m_frozen = true; }
bool is_blocked() const { return m_blocked; }
void block() { SASSERT(!m_blocked); SASSERT(!is_learned()); m_blocked = true; }
void unblock() { SASSERT(m_blocked); SASSERT(!is_learned()); m_blocked = false; }
void unfreeze() { SASSERT(is_learned()); SASSERT(frozen()); m_frozen = false; }
static var_approx_set approx(unsigned num, literal const * lits);
void set_glue(unsigned glue) { m_glue = glue > 255 ? 255 : glue; }