MAYBE

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

Strict Trs:
  { D(t()) -> 1()
  , D(constant()) -> 0()
  , D(+(x, y)) -> +(D(x), D(y))
  , D(*(x, y)) -> +(*(y, D(x)), *(x, D(y)))
  , D(-(x, y)) -> -(D(x), D(y))
  , D(minus(x)) -> minus(D(x))
  , D(div(x, y)) -> -(div(D(x), y), div(*(x, D(y)), pow(y, 2())))
  , D(pow(x, y)) ->
    +(*(*(y, pow(x, -(y, 1()))), D(x)), *(*(pow(x, y), ln(x)), D(y)))
  , D(ln(x)) -> div(D(x), x) }
Obligation:
  innermost runtime complexity
Answer:
  MAYBE

The input cannot be shown compatible

Arrrr..