MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          ack(0(),y) -> s(y)
          ack(s(x),y) -> f(x,x)
          ack(s(x),0()) -> ack(x,s(0()))
          ack(s(x),s(y)) -> ack(x,ack(s(x),y))
          f(x,y) -> ack(x,y)
          f(x,s(y)) -> f(y,x)
          f(s(x),y) -> f(x,s(x))
      - Signature:
          {ack/2,f/2} / {0/0,s/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {ack,f} and constructors {0,s}
  + Applied Processor:
      MI {miKind = Automaton Nothing, miDimension = 3, miUArgs = NoUArgs, miURules = NoURules, miSelector = Nothing}
  + Details:
      Incompatible
MAYBE