MAYBE

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

Strict Trs:
  { plus(x, y) -> if(isZero(x), y, s(plus(p(x), y)))
  , if(true(), x, y) -> x
  , if(false(), x, y) -> y
  , isZero(s(x)) -> false()
  , isZero(0()) -> true()
  , p(s(x)) -> x }
Obligation:
  innermost runtime complexity
Answer:
  MAYBE

The input cannot be shown compatible

Arrrr..