MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          f(x,a(b(y))) -> f(a(b(x)),y)
          f(a(x),y) -> f(x,a(y))
          f(b(x),y) -> f(x,b(y))
      - Signature:
          {f/2} / {a/1,b/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {f} and constructors {a,b}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE