MAYBE
* Step 1: Failure MAYBE
  + Considered Problem:
      - Strict TRS:
          activate(X) -> X
          activate(n__incr(X)) -> incr(X)
          head(cons(X,XS)) -> X
          incr(X) -> n__incr(X)
          incr(cons(X,XS)) -> cons(s(X),n__incr(activate(XS)))
          nats() -> cons(0(),n__incr(nats()))
          odds() -> incr(pairs())
          pairs() -> cons(0(),n__incr(odds()))
          tail(cons(X,XS)) -> activate(XS)
      - Signature:
          {activate/1,head/1,incr/1,nats/0,odds/0,pairs/0,tail/1} / {0/0,cons/2,n__incr/1,s/1}
      - Obligation:
          innermost runtime complexity wrt. defined symbols {activate,head,incr,nats,odds,pairs
          ,tail} and constructors {0,cons,n__incr,s}
  + Applied Processor:
      NaturalPI {shape = Mixed 3, restrict = NoRestrict, uargs = UArgs, urules = URules, selector = Nothing}
  + Details:
      Incompatible
MAYBE