TIMEOUT

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

Strict Trs:
  { +(0(), y) -> y
  , +(s(x), y) -> s(+(x, y))
  , *(x, 0()) -> 0()
  , *(x, s(y)) -> +(x, *(x, y))
  , twice(0()) -> 0()
  , twice(s(x)) -> s(s(twice(x)))
  , -(x, 0()) -> x
  , -(s(x), s(y)) -> -(x, y)
  , f(s(x)) ->
    f(-(*(s(s(x)), s(s(x))), +(*(s(x), s(s(x))), s(s(0()))))) }
Obligation:
  innermost runtime complexity
Answer:
  TIMEOUT

Computation stopped due to timeout after 10.0 seconds.

Arrrr..