We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict Trs: { f(c(a(), z, x)) -> b(a(), z) , b(y, z) -> z , b(x, b(z, y)) -> f(b(f(f(z)), c(x, z, y))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Arguments of following rules are not normal-forms: { b(x, b(z, y)) -> f(b(f(f(z)), c(x, z, y))) } All above mentioned rules can be savely removed. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Strict Trs: { f(c(a(), z, x)) -> b(a(), z) , b(y, z) -> z } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) We add the following weak dependency pairs: Strict DPs: { f^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , b^#(y, z) -> c_2() } 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: { f^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , b^#(y, z) -> c_2() } Strict Trs: { f(c(a(), z, x)) -> b(a(), z) , b(y, z) -> z } 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: { f^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , b^#(y, z) -> c_2() } 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: Uargs(c_1) = {1} TcT has computed the following constructor-restricted matrix interpretation. [c](x1, x2, x3) = [0] [0] [a] = [0] [0] [f^#](x1) = [0] [0] [c_1](x1) = [1 0] x1 + [0] [0 1] [2] [b^#](x1, x2) = [1] [0] [c_2] = [0] [0] The order satisfies the following ordering constraints: [f^#(c(a(), z, x))] = [0] [0] ? [1] [2] = [c_1(b^#(a(), z))] [b^#(y, z)] = [1] [0] > [0] [0] = [c_2()] 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^#(c(a(), z, x)) -> c_1(b^#(a(), z)) } Weak DPs: { b^#(y, z) -> 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^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , 2: b^#(y, z) -> c_2() } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak DPs: { f^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , b^#(y, z) -> c_2() } 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^#(c(a(), z, x)) -> c_1(b^#(a(), z)) , b^#(y, z) -> c_2() } 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))