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compress elimination stack representation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-17 21:28:48 -07:00
parent e0e7836c12
commit 8811d78415
3 changed files with 108 additions and 54 deletions
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12
src/sat/sat_model_converter.h
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@ -39,18 +39,20 @@ namespace sat {
class model_converter {
public:
typedef svector<std::pair<unsigned, literal>> elim_stackv;
class elim_stack {
unsigned m_refcount;
literal_vector m_stack;
elim_stackv m_stack;
public:
elim_stack(literal_vector const& stack):
elim_stack(elim_stackv const& stack):
m_refcount(0),
m_stack(stack) {
}
~elim_stack() { }
void inc_ref() { ++m_refcount; }
void dec_ref() { if (0 == --m_refcount) dealloc(this); }
literal_vector const& stack() const { return m_stack; }
elim_stackv const& stack() const { return m_stack; }
};
enum kind { ELIM_VAR = 0, BLOCK_LIT };
@ -74,7 +76,7 @@ namespace sat {
private:
vector<entry> m_entries;
void process_stack(model & m, literal_vector const& stack) const;
void process_stack(model & m, literal_vector const& clause, elim_stackv const& stack) const;
public:
model_converter();
@ -86,7 +88,7 @@ namespace sat {
void insert(entry & e, clause const & c);
void insert(entry & e, literal l1, literal l2);
void insert(entry & e, clause_wrapper const & c);
void insert(entry & c, literal_vector const& covered_clause, literal_vector const& elim_stack);
void insert(entry & c, literal_vector const& covered_clause, elim_stackv const& elim_stack);
bool empty() const { return m_entries.empty(); }