MAYBE
Time: 0.000505
TRS:
 {f a() -> f a(),
    a() -> b()}
 DP:
  DP:
   {f# a() -> f# a()}
  TRS:
  {f a() -> f a(),
     a() -> b()}
  EDG:
   {(f# a() -> f# a(), f# a() -> f# a())}
   STATUS:
    arrows: 0.000000
    SCCS (1):
     Scc:
      {f# a() -> f# a()}
     
     SCC (1):
      Strict:
       {f# a() -> f# a()}
      Weak:
      {f a() -> f a(),
         a() -> b()}
      Open