We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict Trs: { g(x, y) -> x , g(x, y) -> y , f(s(x), y, y) -> f(y, x, s(x)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) We add the following weak dependency pairs: Strict DPs: { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() , f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict DPs: { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() , f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } Strict Trs: { g(x, y) -> x , g(x, y) -> y , f(s(x), y, y) -> f(y, x, s(x)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) No rule is usable, rules are removed from the input problem. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict DPs: { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() , f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) The weightgap principle applies (using the following constant growth matrix-interpretation) The following argument positions are usable: none TcT has computed the following constructor-restricted matrix interpretation. [s](x1) = [0] [0] [g^#](x1, x2) = [2] [0] [c_1] = [0] [0] [c_2] = [0] [0] [f^#](x1, x2, x3) = [0] [0] [c_3](x1) = [0] [0] The order satisfies the following ordering constraints: [g^#(x, y)] = [2] [0] > [0] [0] = [c_1()] [g^#(x, y)] = [2] [0] > [0] [0] = [c_2()] [f^#(s(x), y, y)] = [0] [0] >= [0] [0] = [c_3(f^#(y, x, s(x)))] Further, it can be verified that all rules not oriented are covered by the weightgap condition. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict DPs: { f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } Weak DPs: { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) We estimate the number of application of {1} by applications of Pre({1}) = {}. Here rules are labeled as follows: DPs: { 1: f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) , 2: g^#(x, y) -> c_1() , 3: g^#(x, y) -> c_2() } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak DPs: { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() , f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed. { g^#(x, y) -> c_1() , g^#(x, y) -> c_2() , f^#(s(x), y, y) -> c_3(f^#(y, x, s(x))) } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Rules: Empty Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Empty rules are trivially bounded Hurray, we answered YES(O(1),O(1))