MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          ++(x,nil()) -> x
          ++(++(x,y),z) -> ++(x,++(y,z))
          ++(.(x,y),z) -> .(x,++(y,z))
          ++(nil(),y) -> y
      - Signature:
          {++/2} / {./2,nil/0}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {++} and constructors {.,nil}
  + Applied Processor:
      Ara {heuristics_ = NoHeuristics, minDegree = 1, maxDegree = 3, araTimeout = 60, araFindStrictRules = Nothing, araSmtSolver = MiniSMT}
  + Details:
      The input can not be schown compatible.
MAYBE