MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          sum(cons(0(),x),y) -> sum(x,y)
          sum(cons(s(n),x),cons(m,y)) -> sum(cons(n,x),cons(s(m),y))
          sum(nil(),y) -> y
          weight(cons(n,cons(m,x))) -> weight(sum(cons(n,cons(m,x)),cons(0(),x)))
          weight(cons(n,nil())) -> n
      - Signature:
          {sum/2,weight/1} / {0/0,cons/2,nil/0,s/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {sum,weight} and constructors {0,cons,nil,s}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE