test002.idr:1:6:Universe inconsistency.
        Working on: ./test002.idr.z
        Old domain: (6,6)
        New domain: (6,5)
        Involved constraints: 
                ConstraintFC {uconstraint = ./test002.idr.z <= ./test002.idr.a1, ufc = test002.idr:1:6}
                ConstraintFC {uconstraint = ./test002.idr.y < ./test002.idr.z, ufc = test002.idr:1:6}
                ConstraintFC {uconstraint = ./test002.idr.z <= ./test002.idr.a1, ufc = test002.idr:1:6}