TRS: { gt(0(), y) -> false(), gt(s(x), 0()) -> true(), gt(s(x), s(y)) -> gt(x, y), plus(0(), y) -> y, plus(s(x), y) -> s(plus(x, y)), double(0()) -> 0(), double(s(x)) -> s(s(double(x))), average(x, y) -> aver(plus(x, y), 0()), aver(sum, z) -> if(gt(sum, double(z)), sum, z), if(true(), sum, z) -> aver(sum, s(z)), if(false(), sum, z) -> z} Fail