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