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) -> f(x, g(x, y)) , f(0(), y) -> y , g(x, y) -> y } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We add following weak dependency pairs: Strict DPs: { f^#(s(x), y) -> c_1(f^#(x, g(x, y))) , f^#(0(), y) -> c_2() , g^#(x, y) -> c_3() } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict DPs: { f^#(s(x), y) -> c_1(f^#(x, g(x, y))) , f^#(0(), y) -> c_2() , g^#(x, y) -> c_3() } Strict Trs: { f(s(x), y) -> f(x, g(x, y)) , f(0(), y) -> y , g(x, y) -> y } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We replace rewrite rules by usable rules: Strict Usable Rules: { g(x, y) -> y } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict DPs: { f^#(s(x), y) -> c_1(f^#(x, g(x, y))) , f^#(0(), y) -> c_2() , g^#(x, y) -> c_3() } Strict Trs: { g(x, y) -> y } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) The weightgap principle applies (using the following constant growth matrix-interpretation) The following argument positions are usable: Uargs(f^#) = {2}, Uargs(c_1) = {1} TcT has computed following constructor-restricted matrix interpretation. [s](x1) = [1] x1 + [2] [g](x1, x2) = [1] x2 + [1] [0] = [2] [f^#](x1, x2) = [2] x1 + [1] x2 + [2] [c_1](x1) = [1] x1 + [1] [c_2] = [1] [g^#](x1, x2) = [1] [c_3] = [0] This order satisfies following ordering constraints: [g(x, y)] = [1] y + [1] > [1] y + [0] = [y] 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)). Weak DPs: { f^#(s(x), y) -> c_1(f^#(x, g(x, y))) , f^#(0(), y) -> c_2() , g^#(x, y) -> c_3() } Weak Trs: { g(x, y) -> y } 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. { f^#(s(x), y) -> c_1(f^#(x, g(x, y))) , f^#(0(), y) -> c_2() , g^#(x, y) -> c_3() } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak Trs: { g(x, y) -> y } 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)). Rules: Empty Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Empty rules are trivially bounded Hurray, we answered YES(O(1),O(n^1))