Rebuilt random solver.

org.sat4j.core/src/main/java/org/sat4j/minisat/SolverFactory.java

@@ -46,6 +46,7 @@ import org.sat4j.minisat.learning.PercentLengthLearning;
 import org.sat4j.minisat.orders.PhaseCachingAutoEraseStrategy;
 import org.sat4j.minisat.orders.RSATLastLearnedClausesPhaseSelectionStrategy;
 import org.sat4j.minisat.orders.RSATPhaseSelectionStrategy;
+import org.sat4j.minisat.orders.RandomLiteralSelectionStrategy;
 import org.sat4j.minisat.orders.RandomWalkDecorator;
 import org.sat4j.minisat.orders.VarOrderHeap;
 import org.sat4j.minisat.restarts.ArminRestarts;
@@ -177,6 +178,23 @@ public final class SolverFactory extends ASolverFactory<ISolver> {
         return solver;
     }
 
+    /**
+     * 
+     * @since 2.3.6
+     */
+    public static ICDCL<DataStructureFactory> newRandomSolver() {
+        MiniSATLearning<DataStructureFactory> learning = new MiniSATLearning<DataStructureFactory>();
+        Solver<DataStructureFactory> solver = new Solver<DataStructureFactory>(
+                learning, new MixedDataStructureDanielWL(),
+                new RandomWalkDecorator(
+                        new VarOrderHeap(new RandomLiteralSelectionStrategy()),
+                        1.0),
+                new NoRestarts());
+        // solver.setSearchParams(new SearchParams(1.1, 100));
+        solver.setSimplifier(solver.EXPENSIVE_SIMPLIFICATION);
+        return solver;
+    }
+
     /**
      * @since 2.2
      */