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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-11-08 05:08:57 -08:00
parent e1bc9cc0bb
commit 57c40e480b
8 changed files with 120 additions and 96 deletions
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11
src/math/polysat/boolean.h
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@ -32,6 +32,8 @@ namespace polysat {
var_queue m_free_vars; // free Boolean variables
vector<ptr_vector<clause>> m_watch; // watch list for literals into clauses
void assign(sat::literal lit, unsigned lvl, clause* reason, clause* lemma, unsigned dep = null_dependency);
public:
bool_var_manager(): m_free_vars(m_activity) {}
@ -56,9 +58,7 @@ namespace polysat {
clause* reason(sat::bool_var var) const { SASSERT(is_assigned(var)); return m_reason[var]; }
clause* lemma(sat::bool_var var) const { SASSERT(is_decision(var)); return m_lemma[var]; }
ptr_vector<clause>& watch(sat::literal lit) { return m_watch[lit.index()]; }
unsigned_vector& activity() { return m_activity; }
bool can_decide() const { return !m_free_vars.empty(); }
@ -69,7 +69,10 @@ namespace polysat {
void dec_activity(sat::literal lit) { m_activity[lit.var()] /= 2; }
/// Set the given literal to true
void assign(sat::literal lit, unsigned lvl, clause* reason, clause* lemma, unsigned dep = null_dependency);
void propagate(sat::literal lit, unsigned lvl, clause& reason);
void decide(sat::literal lit, unsigned lvl, clause* lemma);
void eval(sat::literal lit, unsigned lvl);
void asserted(sat::literal lit, unsigned lvl, unsigned dep);
void unassign(sat::literal lit);
std::ostream& display(std::ostream& out) const;