MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      Rules:
        0. f0(A,B,C) -> f4(D,1 + D,B) True                                      (1,1)
        1. f4(A,B,C) -> f4(D,1 + D,B) [1 + A + -1*B >= 0 && -1 + -1*A + B >= 0] (?,1)
      Signature:
        {(f0,3);(f4,3)}
      Flow Graph:
        [0->{1},1->{1}]
      
  + Applied Processor:
      Failing "Open problems left."
  + Details:
      Open problems left.
MAYBE