MAYBE

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

Strict Trs:
  { lt(x, 0()) -> false()
  , lt(0(), s(x)) -> true()
  , lt(s(x), s(y)) -> lt(x, y)
  , fac(x) -> help(x, 0())
  , help(x, c) -> if(lt(c, x), x, c)
  , if(true(), x, c) -> times(s(c), help(x, s(c)))
  , if(false(), x, c) -> s(0()) }
Obligation:
  innermost runtime complexity
Answer:
  MAYBE

The input cannot be shown compatible

Arrrr..