diff --git a/src/test/java/UnifyTest.java b/src/test/java/UnifyTest.java
index 4f7d453..cb26981 100644
--- a/src/test/java/UnifyTest.java
+++ b/src/test/java/UnifyTest.java
@@ -674,7 +674,1427 @@ public class UnifyTest {
         UnifyResultModel urm = new UnifyResultModel(cons, finiteClosure);
         UnifyTaskModel tasks = new UnifyTaskModel();
         Set<Set<UnifyPair>> solution = unifyAlgo.unify(undConstraints, oderConstraints, finiteClosure, new NullWriter(), false, urm, tasks);
-        System.out.println(solution);
+        System.out.println(solution.size());
+    }
+
+    @Test
+    public void scalark3(){
+        UnifyType type1;
+        UnifyType type2;
+
+        //und-constraints
+        Set<UnifyPair> undConstraints = new HashSet<>();
+        //X <. E
+        type1 = new PlaceholderType("X");
+        type2 = new PlaceholderType("E");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //L =. Scalar
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Scalar");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //F <. E
+        type1 = new PlaceholderType("F");
+        type2 = new PlaceholderType("E");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //H =. Scalar
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Scalar");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <!=. java.lang.Number
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+        //G =. java.lang.Boolean
+        type1 = new PlaceholderType("G");
+        type2 = new ReferenceType("java.lang.Boolean");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. G
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("G");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //J <!=. java.lang.Number
+        type1 = new PlaceholderType("J");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+        //V <. C
+        type1 = new PlaceholderType("V");
+        type2 = new PlaceholderType("C");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //C =. A
+        type1 = new PlaceholderType("C");
+        type2 = new PlaceholderType("A");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //D <. C
+        type1 = new PlaceholderType("D");
+        type2 = new PlaceholderType("C");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+
+        //oder-constraints
+        List<Set<Constraint<UnifyPair>>> oderConstraints = new ArrayList<>();
+        Set<Constraint<UnifyPair>> constraints = new HashSet<>();
+        Constraint<UnifyPair> constraint = new Constraint<>();
+
+        //set #1
+        constraints = new HashSet<>();
+        //D =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("D");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraints.add(constraint);
+        //D =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("D");
+        type2 = new ReferenceType("java.lang.Float");
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #2
+        constraints = new HashSet<>();
+        //F =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("F");
+        type2 = new ReferenceType("java.lang.Float");
+        constraints.add(constraint);
+        //F =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("F");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #3
+        constraints = new HashSet<>();
+        //H =. ? extends Scalar
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("H");
+        type2 = new ExtendsType(new ReferenceType("Scalar"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. J
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. J
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. ? extends Vector<AJU>
+        type1 = new PlaceholderType("H");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJU"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. J
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. Vector<AJU>
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJU")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. J
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. ? extends AbstractList<AJT>
+        type1 = new PlaceholderType("H");
+        type2 = new ExtendsType(new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJT"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. J
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. Scalar
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Scalar");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. J
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. AbstractList<AJT>
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJT")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #4
+        constraints = new HashSet<>();
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //L =. Scalar
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Scalar");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. O
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AJV =. O
+        type1 = new PlaceholderType("AJV");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. AbstractList<AJV>
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJV")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Integer =. O
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. ? extends Scalar
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Scalar"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //L =. ? extends AbstractList<AJV>
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJV"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AJV =. O
+        type1 = new PlaceholderType("AJV");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. Vector<AJW>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJW")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AJW =. O
+        type1 = new PlaceholderType("AJW");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AJW =. O
+        type1 = new PlaceholderType("AJW");
+        type2 = new PlaceholderType("O");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. ? extends Vector<AJW>
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJW"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #5
+        constraints = new HashSet<>();
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //B =. ? extends Scalar
+        type1 = new PlaceholderType("B");
+        type2 = new ExtendsType(new ReferenceType("Scalar"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. S
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //AJX =. S
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AJX");
+        type2 = new PlaceholderType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //B =. AbstractList<AJX>
+        type1 = new PlaceholderType("B");
+        type2 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJX")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //AJX =. S
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AJX");
+        type2 = new PlaceholderType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //B =. ? extends AbstractList<AJX>
+        type1 = new PlaceholderType("B");
+        type2 = new ExtendsType(new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("AJX"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //B =. Vector<AJY>
+        type1 = new PlaceholderType("B");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJY")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AJY =. S
+        type1 = new PlaceholderType("AJY");
+        type2 = new PlaceholderType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AJY =. S
+        type1 = new PlaceholderType("AJY");
+        type2 = new PlaceholderType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //B =. ? extends Vector<AJY>
+        type1 = new PlaceholderType("B");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("AJY"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //E <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Integer =. S
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("S");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //B =. Scalar
+        type1 = new PlaceholderType("B");
+        type2 = new ReferenceType("Scalar");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #6
+        constraints = new HashSet<>();
+        //S <. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("S");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //O <. java.lang.Float
+        type1 = new PlaceholderType("O");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Float =. U
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new PlaceholderType("U");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //S <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("S");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //O <. java.lang.Integer
+        type1 = new PlaceholderType("O");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Integer =. U
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("U");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #7
+        constraints = new HashSet<>();
+        //U <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("U");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //C <. java.lang.Integer
+        type1 = new PlaceholderType("C");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Integer =. V
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("V");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //C <. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("C");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //U <. java.lang.Float#
+        type1 = new PlaceholderType("U");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Float =. V
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new PlaceholderType("V");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #8
+        constraints = new HashSet<>();
+        //W =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("W");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //W =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("W");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #9
+        constraints = new HashSet<>();
+        //W <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("W");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Integer =. X
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //W <. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("W");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //E <. java.lang.Float
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Float =. X
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //FiniteClosure
+        Set<UnifyPair> fcConstraints = new HashSet<>();
+        //java.lang.Number < java.lang.Object
+        type1 = new ReferenceType("java.lang.Number");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Number < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Number");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Number
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Number");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Number
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.Number");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Object
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.constant.Constable
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.constant.Constable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Comparable<java.lang.Float>
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Float")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.constant.ConstantDesc
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.constant.ConstantDesc");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Object
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.constant.Constable
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.constant.Constable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Comparable<java.lang.Integer>
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.constant.ConstantDesc
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.constant.ConstantDesc");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Comparable<java.lang.Float> < java.lang.Object
+        type1 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Float")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<java.lang.Integer> < java.lang.Object
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<java.lang.Integer> < AbstractList<java.lang.Integer>
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("AbstractList", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar < Vector<java.lang.Integer>
+        type1 = new ReferenceType("Scalar");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.constant.ConstantDesc < java.lang.Object
+        type1 = new ReferenceType("java.lang.constant.ConstantDesc");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar < java.lang.Object
+        type1 = new ReferenceType("Scalar");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar < AbstractList<java.lang.Integer>
+        type1 = new ReferenceType("Scalar");
+        type2 = new ReferenceType("AbstractList", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<EXP> < AbstractList<EXP>
+        type1 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("EXP")));
+        type2 = new ReferenceType("AbstractList", new TypeParams(new PlaceholderType("EXP")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<EXP> < java.lang.Object
+        type1 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("EXP")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.constant.Constable < java.lang.Object
+        type1 = new ReferenceType("java.lang.constant.Constable");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.io.Serializable < java.lang.Object
+        type1 = new ReferenceType("java.io.Serializable");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //AbstractList<java.lang.Integer> < java.lang.Object
+        type1 = new ReferenceType("AbstractList", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Comparable<java.lang.Integer> < java.lang.Object
+        type1 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+
+        FiniteClosure finiteClosure = new FiniteClosure(fcConstraints, new NullWriter());
+        TypeUnify unifyAlgo = new TypeUnify();
+        ConstraintSet< Pair> cons = new ConstraintSet<>();
+        UnifyResultModelParallel urm = new UnifyResultModelParallel(cons, finiteClosure);
+        UnifyTaskModelParallel tasks = new UnifyTaskModelParallel();
+        Set<Set<UnifyPair>> solution = unifyAlgo.unify(undConstraints, oderConstraints, finiteClosure, new NullWriter(), false, urm, tasks);
+        System.out.println(solution.size());
+    }
+
+    @Test
+    public void matrixk2(){
+        UnifyType type1;
+        UnifyType type2;
+
+        //und-constraints
+        Set<UnifyPair> undConstraints = new HashSet<>();
+        //T =. BC
+        type1 = new PlaceholderType("T");
+        type2 = new PlaceholderType("BC");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. G
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("G");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //G =. java.lang.Boolean
+        type1 = new PlaceholderType("G");
+        type2 = new ReferenceType("java.lang.Boolean");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //F <. E
+        type1 = new PlaceholderType("F");
+        type2 = new PlaceholderType("E");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //E =. BJ
+        type1 = new PlaceholderType("E");
+        type2 = new PlaceholderType("BJ");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //Vector<java.lang.Integer> <. R
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("R");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //P <. L
+        type1 = new PlaceholderType("P");
+        type2 = new PlaceholderType("L");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //E <!=. java.lang.Number
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+        //C =. A
+        type1 = new PlaceholderType("C");
+        type2 = new PlaceholderType("A");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //M =. Matrix
+        type1 = new PlaceholderType("M");
+        type2 = new ReferenceType("Matrix");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AC <. AB
+        type1 = new PlaceholderType("AC");
+        type2 = new PlaceholderType("AB");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //Matrix <. C
+        type1 = new ReferenceType("Matrix");
+        type2 = new PlaceholderType("C");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AB =. AV
+        type1 = new PlaceholderType("AB");
+        type2 = new PlaceholderType("AV");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //X <!=. java.lang.Number
+        type1 = new PlaceholderType("X");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+        //java.lang.Boolean =. AD
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("AD");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AU <. Z
+        type1 = new PlaceholderType("AU");
+        type2 = new PlaceholderType("Z");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AD =. java.lang.Boolean
+        type1 = new PlaceholderType("AD");
+        type2 = new ReferenceType("java.lang.Boolean");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //H =. Matrix
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Matrix");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AA <. Z
+        type1 = new PlaceholderType("AA");
+        type2 = new PlaceholderType("Z");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <!=. java.lang.Number
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+        //V =. java.lang.Boolean
+        type1 = new PlaceholderType("V");
+        type2 = new ReferenceType("java.lang.Boolean");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. V
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("V");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //J <!=. java.lang.Number
+        type1 = new PlaceholderType("J");
+        type2 = new ReferenceType("java.lang.Number");
+        undConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLERNEQDOT));
+
+        //oder-constraints
+        List<Set<Constraint<UnifyPair>>> oderConstraints = new ArrayList<>();
+        Set<Constraint<UnifyPair>> constraints = new HashSet<>();
+        Constraint<UnifyPair> constraint = new Constraint<>();
+
+        //set #1
+        constraints = new HashSet<>();
+        //Matrix <. Matrix
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Matrix");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #2
+        constraints = new HashSet<>();
+        //F =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("F");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //F =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("F");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #3
+        constraints = new HashSet<>();
+        //H =. ? extends Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("H");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. J
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //H =. Vector<ALB>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ALB")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. J
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //H =. Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("H");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. J
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //H =. ? extends Vector<ALB>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("H");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ALB"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. J
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("J");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #4
+        constraints = new HashSet<>();
+        //ALC =. P
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("ALC");
+        type2 = new PlaceholderType("P");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //M =. Vector<ALC>
+        type1 = new PlaceholderType("M");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ALC")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 =  new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //Vector<java.lang.Integer> =. P
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("P");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //M =. ? extends Matrix
+        type1 = new PlaceholderType("M");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //Vector<java.lang.Integer> =. P
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("P");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //M =. Matrix
+        type1 = new PlaceholderType("M");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //ALC =. P
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("ALC");
+        type2 = new PlaceholderType("P");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //M =. ? extends Vector<ALC>
+        type1 = new PlaceholderType("M");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ALC"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //E <. java.lang.Integer
+        type1 = new PlaceholderType("E");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #5
+        constraints = new HashSet<>();
+        //Vector<ALD> <. Vector<java.lang.Integer>
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ALD")));
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #6
+        constraints = new HashSet<>();
+        //U =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("U");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //U =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("U");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #7
+        constraints = new HashSet<>();
+        //L =. ? extends Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. X
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. ? extends Vector<AMH>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("AMH"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. X
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. X
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. Vector<AMH>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("AMH")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. X
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("X");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #8
+        constraints = new HashSet<>();
+        //AA =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AA");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //AA =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AA");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #9
+        constraints = new HashSet<>();
+        //AC =. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AC");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //AC =. java.lang.Float
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AC");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #10
+        constraints = new HashSet<>();
+        //L =. ? extends Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. AF
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AF");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. ? extends Vector<ANL>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANL"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. AF
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AF");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. AF
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AF");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //L =. Vector<ANL>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANL")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Integer =. AF
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AF");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #11
+        constraints = new HashSet<>();
+        //Vector<java.lang.Integer> =. AJ
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AJ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. Matrix
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //ANM =. AJ
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("ANM");
+        type2 = new PlaceholderType("AJ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. ? extends Vector<ANM>
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANM"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //Vector<java.lang.Integer> =. AJ
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AJ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. ? extends Matrix
+        type1 = new PlaceholderType("L");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //ANM =. AJ
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("ANM");
+        type2 = new PlaceholderType("AJ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //L =. Vector<ANM>
+        type1 = new PlaceholderType("L");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANM")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #12
+        constraints = new HashSet<>();
+        //AB <. java.lang.Integer
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //Vector<java.lang.Integer> =. AN
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AN");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //B =. Matrix
+        type1 = new PlaceholderType("B");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //ANN =. AN
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("ANN");
+        type2 = new PlaceholderType("AN");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //B =. ? extends Vector<ANN>
+        type1 = new PlaceholderType("B");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANN"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //B =. Vector<ANN>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("B");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANN")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //ANN =. AN
+        type1 = new PlaceholderType("ANN");
+        type2 = new PlaceholderType("AN");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //B =. ? extends Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("B");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AB <. java.lang.Integer
+        type1 = new PlaceholderType("AB");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //Vector<java.lang.Integer> =. AN
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AN");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #13
+        constraints = new HashSet<>();
+        //Vector<java.lang.Integer> =. AR
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AR");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AN =. ? extends Matrix
+        type1 = new PlaceholderType("AN");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //T <. java.lang.Integer
+        type1 = new PlaceholderType("T");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //AN =. ? extends Vector<ANO>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AN");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANO"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //ANO =. AR
+        type1 = new PlaceholderType("ANO");
+        type2 = new PlaceholderType("AR");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //T <. java.lang.Integer
+        type1 = new PlaceholderType("T");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //AN =. Vector<ANO>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AN");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANO")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //ANO =. AR
+        type1 = new PlaceholderType("ANO");
+        type2 = new PlaceholderType("AR");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //T <. java.lang.Integer
+        type1 = new PlaceholderType("T");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //AN =. Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("AN");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //Vector<java.lang.Integer> =. AR
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new PlaceholderType("AR");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //T <. java.lang.Integer
+        type1 = new PlaceholderType("T");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #14
+        constraints = new HashSet<>();
+        //java.lang.Integer =. AT
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AT");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AJ <. java.lang.Integer
+        type1 = new PlaceholderType("AJ");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AR <. java.lang.Integer
+        type1 = new PlaceholderType("AR");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //java.lang.Float =. AT
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Float");
+        type2 =  new PlaceholderType("AT");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AR <. java.lang.Float
+        type1 = new PlaceholderType("AR");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AJ <. java.lang.Float
+        type1 = new PlaceholderType("AJ");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #15
+        constraints = new HashSet<>();
+        //java.lang.Float =. AU
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new PlaceholderType("AU");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //AT <. java.lang.Float
+        type1 = new PlaceholderType("AT");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //Z <. java.lang.Float
+        type1 = new PlaceholderType("Z");
+        type2 = new ReferenceType("java.lang.Float");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        //java.lang.Integer =. AU
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new PlaceholderType("AU");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //Z <. java.lang.Integer
+        type1 = new PlaceholderType("Z");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //AT <. java.lang.Integer
+        type1 = new PlaceholderType("AT");
+        type2 = new ReferenceType("java.lang.Integer");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #16
+        constraints = new HashSet<>();
+        //Z <. ANP
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("Z");
+        type2 = new PlaceholderType("ANP");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //R =. ? extends Vector<ANP>
+        type1 = new PlaceholderType("R");
+        type2 = new ExtendsType(new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANP"))));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. BA
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BA");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //R =. ? extends Matrix
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("R");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //Z <. Vector<java.lang.Integer>
+        type1 = new PlaceholderType("Z");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Boolean =. BA
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BA");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //Z <. ANP
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("Z");
+        type2 = new PlaceholderType("ANP");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //R =. Vector<ANP>
+        type1 = new PlaceholderType("R");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANP")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. BA
+        type1 =  new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BA");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //Z <. Vector<java.lang.Integer>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("Z");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Boolean =. BA
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BA");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //R =. Matrix
+        type1 = new PlaceholderType("R");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //set #17
+        constraints = new HashSet<>();
+        //R <. Vector<java.lang.Integer>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("R");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //C =. ? extends Matrix
+        type1 = new PlaceholderType("C");
+        type2 = new ExtendsType(new ReferenceType("Matrix"));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //java.lang.Boolean =. BH
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BH");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Boolean =. BH
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BH");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //R <. ANQ
+        type1 = new PlaceholderType("R");
+        type2 = new PlaceholderType("ANQ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //C =. Vector<ANQ>
+        type1 = new PlaceholderType("C");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANQ")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //R <. Vector<java.lang.Integer>
+        constraint = new Constraint<>();
+        type1 = new PlaceholderType("R");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        //java.lang.Boolean =. BH
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BH");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //C =. Matrix
+        type1 = new PlaceholderType("C");
+        type2 = new ReferenceType("Matrix");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        constraints.add(constraint);
+        //java.lang.Boolean =. BH
+        constraint = new Constraint<>();
+        type1 = new ReferenceType("java.lang.Boolean");
+        type2 = new PlaceholderType("BH");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //C =. ? extends Vector<ANQ>
+        type1 = new PlaceholderType("C");
+        type2 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("ANQ")));
+        constraint.add(new UnifyPair(type1, type2, PairOperator.EQUALSDOT));
+        //R <. ANQ
+        type1 = new PlaceholderType("R");
+        type2 = new PlaceholderType("ANQ");
+        constraint.add(new UnifyPair(type1, type2, PairOperator.SMALLERDOT));
+        constraints.add(constraint);
+        oderConstraints.add(constraints);
+
+        //FiniteClosure
+        Set<UnifyPair> fcConstraints = new HashSet<>();
+        //java.lang.Number < java.lang.Object
+        type1 = new ReferenceType("java.lang.Number");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Number < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Number");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Number
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.Number");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Number
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Number");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Object
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.constant.Constable
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.constant.Constable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.constant.ConstantDesc
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.constant.ConstantDesc");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Integer < java.lang.Comparable<java.lang.Integer>
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Object
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.constant.Constable
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.constant.Constable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.io.Serializable
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.io.Serializable");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.Comparable<java.lang.Float>
+        type1 = new ReferenceType("java.lang.Integer");
+        type2 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Float")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Float < java.lang.constant.ConstantDesc
+        type1 = new ReferenceType("java.lang.Float");
+        type2 = new ReferenceType("java.lang.constant.ConstantDesc");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<FAU> < java.lang.Object
+        type1 = new ReferenceType("Vector", new TypeParams(new PlaceholderType("FAU")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar<FCV> < java.lang.Object
+        type1 = new ReferenceType("Scalar", new TypeParams(new PlaceholderType("FCV")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar<FCV> < Vector<java.lang.Integer>
+        type1 = new ReferenceType("Scalar", new TypeParams(new PlaceholderType("FCV")));
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Comparable<java.lang.Float> < java.lang.Object
+        type1 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Float")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<java.lang.Integer> < java.lang.Object
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Scalar<FCV> < Vector<java.lang.Integer>
+        type1 = new ReferenceType("Scalar", new TypeParams(new PlaceholderType("FCV")));
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.constant.ConstantDesc < java.lang.Object
+        type1 = new ReferenceType("java.lang.constant.ConstantDesc");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.constant.Constable < java.lang.Object
+        type1 = new ReferenceType("java.lang.constant.Constable");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.io.Serializable < java.lang.Object
+        type1 = new ReferenceType("java.io.Serializable");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Vector<Vector<java.lang.Integer>> < java.lang.Object
+        type1 = new ReferenceType("Vector", new TypeParams(new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")))));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Matrix < Vector<Vector<java.lang.Integer>>
+        type1 = new ReferenceType("Matrix");
+        type2 = new ReferenceType("Vector", new TypeParams(new ReferenceType("Vector", new TypeParams(new ReferenceType("java.lang.Integer")))));
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //Matrix < java.lang.Object
+        type1 = new ReferenceType("Matrix");
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+        //java.lang.Comparable<java.lang.Integer> < java.lang.Object
+        type1 = new ReferenceType("java.lang.Comparable", new TypeParams(new ReferenceType("java.lang.Integer")));
+        type2 = new ReferenceType("java.lang.Object");
+        fcConstraints.add(new UnifyPair(type1, type2, PairOperator.SMALLER));
+
+        FiniteClosure finiteClosure = new FiniteClosure(fcConstraints, new NullWriter());
+        TypeUnify unifyAlgo = new TypeUnify();
+        ConstraintSet< Pair> cons = new ConstraintSet<>();
+        UnifyResultModelParallel urm = new UnifyResultModelParallel(cons, finiteClosure);
+        UnifyTaskModelParallel tasks = new UnifyTaskModelParallel();
+        Set<Set<UnifyPair>> solution = unifyAlgo.unify(undConstraints, oderConstraints, finiteClosure, new NullWriter(), false, urm, tasks);
         System.out.println(solution.size());
     }
 }