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