MAYBE

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

Strict Trs:
  { half(0()) -> 0()
  , half(s(0())) -> 0()
  , half(s(s(x))) -> s(half(x))
  , le(0(), y) -> true()
  , le(s(x), 0()) -> false()
  , le(s(x), s(y)) -> le(x, y)
  , inc(0()) -> 0()
  , inc(s(x)) -> s(inc(x))
  , log(x) -> log2(x, 0())
  , log2(x, y) -> if(le(x, s(0())), x, inc(y))
  , if(true(), x, s(y)) -> y
  , if(false(), x, y) -> log2(half(x), y) }
Obligation:
  innermost runtime complexity
Answer:
  MAYBE

The input cannot be shown compatible

Arrrr..