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