MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          din(der(der(X))) -> u41(din(der(X)),X)
          din(der(plus(X,Y))) -> u21(din(der(X)),X,Y)
          din(der(times(X,Y))) -> u31(din(der(X)),X,Y)
          u21(dout(DX),X,Y) -> u22(din(der(Y)),X,Y,DX)
          u22(dout(DY),X,Y,DX) -> dout(plus(DX,DY))
          u31(dout(DX),X,Y) -> u32(din(der(Y)),X,Y,DX)
          u32(dout(DY),X,Y,DX) -> dout(plus(times(X,DY),times(Y,DX)))
          u41(dout(DX),X) -> u42(din(der(DX)),X,DX)
          u42(dout(DDX),X,DX) -> dout(DDX)
      - Signature:
          {din/1,u21/3,u22/4,u31/3,u32/4,u41/2,u42/3} / {der/1,dout/1,plus/2,times/2}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {din,u21,u22,u31,u32,u41,u42} and constructors {der,dout
          ,plus,times}
  + Applied Processor:
      MI {miKind = Automaton Nothing, miDimension = 3, miUArgs = NoUArgs, miURules = NoURules, miSelector = Nothing}
  + Details:
      Incompatible
MAYBE