alt/base_virtual_type_self_alt4.nit:44,9: Type Error: expected `A[Int]`, got `Float`.
alt/base_virtual_type_self_alt4.nit:45,7--12: Type Error: expected `Float`, got `A[Int]`.
alt/base_virtual_type_self_alt4.nit:47,7--12: Type Error: expected `Float`, got `A[A[Int]]`.