This code was accidentally deleted from the SAT solver (effectively disabling restarts!)

src/sat/bsat/satSolver.c

@@ -1660,6 +1660,13 @@ static lbool sat_solver_search(sat_solver* s, ABC_INT64_T nof_conflicts)
             int next;
 
             // Reached bound on number of conflicts:
+            if ((nof_conflicts >= 0 && conflictC >= nof_conflicts) || (s->nRuntimeLimit && (s->stats.conflicts & 63) == 0 && Abc_Clock() > s->nRuntimeLimit)){
+                s->progress_estimate = sat_solver_progress(s);
+                sat_solver_canceluntil(s,s->root_level);
+                veci_delete(&learnt_clause);
+                return l_Undef; }
+
+            // Reached bound on number of conflicts:
             if ( (s->nConfLimit && s->stats.conflicts > s->nConfLimit) ||
                  (s->nInsLimit  && s->stats.propagations > s->nInsLimit) )
             {