Proof-logging in the updated solver.

src/aig/fra/fraCec.c

@@ -105,8 +105,8 @@ int Fra_FraigSat( Aig_Man_t * pMan, ABC_INT64_T nConfLimit, ABC_INT64_T nInsLimi
         // simplify the problem
         clk = clock();
         status = sat_solver2_simplify(pSat);
-        printf( "Simplified the problem to %d variables and %d clauses. ", sat_solver2_nvars(pSat), sat_solver2_nclauses(pSat) );
-        ABC_PRT( "Time", clock() - clk );
+//        printf( "Simplified the problem to %d variables and %d clauses. ", sat_solver2_nvars(pSat), sat_solver2_nclauses(pSat) );
+//        ABC_PRT( "Time", clock() - clk );
         if ( status == 0 )
         {
             Vec_IntFree( vCiIds );

src/sat/bsat/satSolver.h

@@ -113,8 +113,8 @@ extern void *      sat_solver_store_release( sat_solver * s );
 //=================================================================================================
 // Solver representation:
 
-//struct clause_t;
-//typedef struct clause_t clause;
+struct clause_t;
+typedef struct clause_t clause;
 
 struct sat_solver_t
 {

src/sat/bsat/satSolver2.h

@@ -32,7 +32,7 @@ OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWA
 
 ABC_NAMESPACE_HEADER_START
 
-
+//#define USE_FLOAT_ACTIVITY
 
 //=================================================================================================
 // Public interface:
@@ -70,9 +70,6 @@ extern void *      sat_solver2_store_release( sat_solver2 * s );
 //=================================================================================================
 // Solver representation:
 
-//struct clause_t;
-//typedef struct clause_t clause;
-
 struct varinfo_t;
 typedef struct varinfo_t varinfo;
 
@@ -91,21 +88,26 @@ struct sat_solver2_t
     int           verbosity;     // Verbosity level. 0=silent, 1=some progress report, 2=everything
     int           fNotUseRandom; // do not allow random decisions with a fixed probability
 //    int           fSkipSimplify; // set to one to skip simplification of the clause database
+    int           fProofLogging; // enable proof-logging
 
     // clauses
+    veci          clauses;       // clause memory
+    veci*         wlists;        // watcher lists (for each literal)
     int           iLearnt;       // the first learnt clause 
     int           iLast;         // the last learnt clause 
-    veci*         wlists;        // watcher lists (for each literal)
-
-    // clause memory
-    int *         pMemArray;
-    int           nMemAlloc;
-    int           nMemSize;
 
     // activities
+#ifdef USE_FLOAT_ACTIVITY
+    double        var_inc;       // Amount to bump next variable with.
+    double        var_decay;     // INVERSE decay factor for variable activity: stores 1/decay. 
+    float         cla_inc;       // Amount to bump next clause with.
+    float         cla_decay;     // INVERSE decay factor for clause activity: stores 1/decay.
+    double*       activity;      // A heuristic measurement of the activity of a variable.
+#else
     int           var_inc;       // Amount to bump next variable with.
     int           cla_inc;       // Amount to bump next clause with.
     unsigned*     activity;      // A heuristic measurement of the activity of a variable.
+#endif
     veci          claActs;       // clause activities
     veci          claProofs;     // clause proofs
 
@@ -123,6 +125,15 @@ struct sat_solver2_t
     veci          model;         // If problem is solved, this vector contains the model (contains: lbool).
     veci          conf_final;    // If problem is unsatisfiable (possibly under assumptions),
                                  // this vector represent the final conflict clause expressed in the assumptions.
+    veci          mark_levels;   // temporary storage for labeled levels
+    veci          min_lit_order; // ordering of removable literals
+    veci          min_step_order;// ordering of resolution steps
+
+    // proof logging
+    veci          proof_clas;    // sequence of proof clauses
+    veci          proof_vars;    // sequence of proof variables 
+    int           iStartChain;   // beginning of the chain
+
     // statistics
     stats_t       stats;
     ABC_INT64_T   nConfLimit;    // external limit on the number of conflicts

src/sat/bsat/satUtil.c

@@ -169,16 +169,15 @@ void Sat_SolverPrintStats( FILE * pFile, sat_solver * p )
   SeeAlso     []
 
 ***********************************************************************/
-void Sat_Solver2PrintStats( FILE * pFile, sat_solver2 * p )
+void Sat_Solver2PrintStats( FILE * pFile, sat_solver2 * s )
 {
-//    printf( "calls         : %10d (%d)\n", (int)p->nCalls, (int)p->nCalls2 );
-    printf( "starts        : %10d\n", (int)p->stats.starts );
-    printf( "conflicts     : %10d\n", (int)p->stats.conflicts );
-    printf( "decisions     : %10d\n", (int)p->stats.decisions );
-    printf( "propagations  : %10d\n", (int)p->stats.propagations );
-//    printf( "inspects      : %10d\n", (int)p->stats.inspects );
-//    printf( "inspects2     : %10d\n", (int)p->stats.inspects2 );
-    printf( "memory        : %10d\n", p->nMemSize );
+    printf( "starts        : %10d\n", (int)s->stats.starts );
+    printf( "conflicts     : %10d\n", (int)s->stats.conflicts );
+    printf( "decisions     : %10d\n", (int)s->stats.decisions );
+    printf( "propagations  : %10d\n", (int)s->stats.propagations );
+//    printf( "inspects      : %10d\n", (int)s->stats.inspects );
+//    printf( "inspects2     : %10d\n", (int)s->stats.inspects2 );
+    printf( "memory        : %10d\n", veci_size(&s->clauses) );
 }
 
 /**Function*************************************************************

src/sat/bsat/satVec.h

@@ -44,7 +44,8 @@ static inline void veci_new (veci* v) {
 static inline void   veci_delete (veci* v)          { ABC_FREE(v->ptr);   }
 static inline int*   veci_begin  (veci* v)          { return v->ptr;  }
 static inline int    veci_size   (veci* v)          { return v->size; }
-static inline void   veci_resize (veci* v, int k)   { v->size = k;    } // only safe to shrink !!
+static inline void   veci_resize (veci* v, int k)   { assert(k <= v->size); v->size = k;         } // only safe to shrink !!
+static inline int    veci_pop    (veci* v)          { assert(v->size); return v->ptr[--v->size]; }
 static inline void   veci_push   (veci* v, int e)
 {
     if (v->size == v->cap) {
@@ -82,7 +83,7 @@ static inline void vecp_new (vecp* v) {
 static inline void   vecp_delete (vecp* v)          { ABC_FREE(v->ptr);   }
 static inline void** vecp_begin  (vecp* v)          { return v->ptr;  }
 static inline int    vecp_size   (vecp* v)          { return v->size; }
-static inline void   vecp_resize (vecp* v, int   k) { v->size = k;    } // only safe to shrink !!
+static inline void   vecp_resize (vecp* v, int   k) { assert(k <= v->size); v->size = k;    } // only safe to shrink !!
 static inline void   vecp_push   (vecp* v, void* e)
 {
     if (v->size == v->cap) {
@@ -143,9 +144,6 @@ struct stats_t
 };
 typedef struct stats_t stats_t;
 
-struct clause_t;
-typedef struct clause_t clause;
-
 ABC_NAMESPACE_HEADER_END
 
 #endif