MAYBE
* Step 1: AddSinks MAYBE
    + Considered Problem:
        Rules:
          0. f3(A,B) -> f0(2,B)      True     (1,1)
          1. f0(A,B) -> f0(1 + A,C)  [C >= 1] (?,1)
          2. f0(A,B) -> f0(-1 + A,C) [0 >= C] (?,1)
        Signature:
          {(f0,2);(f3,2)}
        Flow Graph:
          [0->{1,2},1->{1,2},2->{1,2}]
        
    + Applied Processor:
        AddSinks
    + Details:
        ()
* Step 2: Failure MAYBE
  + Considered Problem:
      Rules:
        0. f3(A,B) -> f0(2,B)        True     (1,1)
        1. f0(A,B) -> f0(1 + A,C)    [C >= 1] (?,1)
        2. f0(A,B) -> f0(-1 + A,C)   [0 >= C] (?,1)
        3. f0(A,B) -> exitus616(A,B) True     (?,1)
      Signature:
        {(exitus616,2);(f0,2);(f3,2)}
      Flow Graph:
        [0->{1,2,3},1->{1,2,3},2->{1,2,3},3->{}]
      
  + Applied Processor:
      LooptreeTransformer
  + Details:
      We construct a looptree:
        P: [0,1,2,3]
        |
        `- p:[1,2] c: []
MAYBE