YES(?,O(n^1)) 1003.60/297.02 YES(?,O(n^1)) 1003.60/297.02 1003.60/297.02 We are left with following problem, upon which TcT provides the 1003.60/297.02 certificate YES(?,O(n^1)). 1003.60/297.02 1003.60/297.02 Strict Trs: 1003.60/297.02 { f(f(a(), x), y) -> f(y, f(x, f(a(), f(h(a()), a())))) } 1003.60/297.02 Obligation: 1003.60/297.02 derivational complexity 1003.60/297.02 Answer: 1003.60/297.02 YES(?,O(n^1)) 1003.60/297.02 1003.60/297.02 The problem is match-bounded by 2. The enriched problem is 1003.60/297.02 compatible with the following automaton. 1003.60/297.02 { f_0(1, 1) -> 1 1003.60/297.02 , f_1(1, 2) -> 1 1003.60/297.02 , f_1(1, 3) -> 2 1003.60/297.02 , f_1(2, 2) -> 1 1003.60/297.02 , f_1(2, 3) -> 2 1003.60/297.02 , f_1(3, 2) -> 2 1003.60/297.02 , f_1(3, 3) -> 2 1003.60/297.02 , f_1(4, 5) -> 3 1003.60/297.02 , f_1(6, 7) -> 5 1003.60/297.02 , f_1(9, 2) -> 2 1003.60/297.02 , f_2(2, 9) -> 2 1003.60/297.02 , f_2(3, 9) -> 2 1003.60/297.02 , f_2(5, 10) -> 9 1003.60/297.02 , f_2(9, 9) -> 2 1003.60/297.02 , f_2(11, 12) -> 10 1003.60/297.02 , f_2(13, 14) -> 12 1003.60/297.02 , a_0() -> 1 1003.60/297.02 , a_1() -> 4 1003.60/297.02 , a_1() -> 7 1003.60/297.02 , a_1() -> 8 1003.60/297.02 , a_2() -> 11 1003.60/297.02 , a_2() -> 14 1003.60/297.02 , a_2() -> 15 1003.60/297.02 , h_0(1) -> 1 1003.60/297.02 , h_1(8) -> 6 1003.60/297.02 , h_2(15) -> 13 } 1003.60/297.02 1003.60/297.02 Hurray, we answered YES(?,O(n^1)) 1003.71/297.13 EOF