TIMEOUT

We are left with following problem, upon which TcT provides the
certificate TIMEOUT.

Strict Trs:
  { nats() -> adx(zeros())
  , adx(cons(X, Y)) -> incr(cons(X, adx(Y)))
  , zeros() -> cons(0(), zeros())
  , incr(cons(X, Y)) -> cons(s(X), incr(Y))
  , hd(cons(X, Y)) -> X
  , tl(cons(X, Y)) -> Y }
Obligation:
  innermost runtime complexity
Answer:
  TIMEOUT

Computation stopped due to timeout after 10.0 seconds.

Arrrr..