TRS:
 {       le(s(x), 0()) -> false(),
            le(0(), y) -> true(),
        le(s(x), s(y)) -> le(x, y),
           double(0()) -> 0(),
          double(s(x)) -> s(s(double(x))),
              log(0()) -> logError(),
             log(s(x)) -> loop(s(x), s(0()), 0()),
      loop(x, s(y), z) -> if(le(x, s(y)), x, s(y), z),
   if(true(), x, y, z) -> z,
  if(false(), x, y, z) -> loop(x, double(y), s(z))}
 Fail