Meaning of the annotations for the proof of each method:
- local_polyh: uses a local linear ranking function for the binary unfolding with polyhedra
- local_mono: uses a local linear ranking function for the binary unfolding with monotonicity constraints
- global_affrnkfn: uses a global affine ranking function with polyhedra
- numerical: the ranking function uses numerical variables or fields
- structural: the ranking function uses reference variables or fields
- loop: the method seems to be part of a loop or recursion

All calls to these methods terminate:
                                             public List.getTail():List
                                             public List.(java.lang.Object,List):void
                                             public static Test6.main(java.lang.String[]):void
[loop,structural,local_polyh]                private static Test6.test(List,List,List):void
[loop,numerical,structural,local_polyh]      public static List.mk(int):List
[loop,structural,local_polyh]                private static Test6.rec(List,List,List):void
[loop,structural,local_polyh]                private static Test6.length(List):int

Some calls to these methods might not terminate:
  none
There are no warnings