MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          *(x,0()) -> 0()
          *(x,s(y)) -> +(x,*(x,y))
          +(0(),y) -> y
          +(s(x),y) -> s(+(x,y))
          -(x,0()) -> x
          -(s(x),s(y)) -> -(x,y)
          f(s(x)) -> f(-(*(s(s(x)),s(s(x))),+(*(s(x),s(s(x))),s(s(0())))))
          twice(0()) -> 0()
          twice(s(x)) -> s(s(twice(x)))
      - Signature:
          {*/2,+/2,-/2,f/1,twice/1} / {0/0,s/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {*,+,-,f,twice} and constructors {0,s}
  + Applied Processor:
      NaturalMI {miDimension = 3, miDegree = 3, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE