Meaning of the annotations for the proof of each method:
- loop: the method seems to be part of a loop or recursion
- may_diverge: proved the existence of at least a diverging execution
- local_polyh: proved to terminate by using a local linear ranking function for the binary unfolding with polyhedra
- local_bds: proved to terminate by using local linear ranking functions for the binary unfolding with bounded difference shapes
- local_sct: proved to terminate via the size change termination principle with monotonicity constraints
- global_lex_aff_rnkfn: proved to terminate by using a global lexicographic affine ranking function
  * numerical: the ranking function uses numerical variables or fields
  * structural: the ranking function uses reference variables or fields

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

There is at least a diverging computation for these methods:
  none

Nothing is known about these methods:
  none

There are no warnings