TRS:
 {      pred(s(x)) -> x,
     minus(x, 0()) -> x,
    minus(x, s(y)) -> pred(minus(x, y)),
   quot(0(), s(y)) -> 0(),
  quot(s(x), s(y)) -> s(quot(minus(x, y), s(y))),
       log(s(0())) -> 0(),
      log(s(s(x))) -> s(log(s(quot(x, s(s(0()))))))}
 Fail