YES(O(1),O(n^1)) We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict Trs: { f(s(x), y, y) -> f(y, x, s(x)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We use the processor 'matrix interpretation of dimension 1' to orient following rules strictly. Trs: { f(s(x), y, y) -> f(y, x, s(x)) } The induced complexity on above rules (modulo remaining rules) is YES(?,O(n^1)) . These rules are moved into the corresponding weak component(s). Sub-proof: ---------- TcT has computed the following constructor-based matrix interpretation satisfying not(EDA). [f](x1, x2, x3) = [2] x1 + [1] x2 + [1] x3 + [0] [s](x1) = [1] x1 + [2] This order satisfies the following ordering constraints: [f(s(x), y, y)] = [2] x + [2] y + [4] > [2] x + [2] y + [2] = [f(y, x, s(x))] We return to the main proof. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak Trs: { f(s(x), y, y) -> f(y, x, s(x)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Empty rules are trivially bounded Hurray, we answered YES(O(1),O(n^1))