MAYBE We are left with following problem, upon which TcT provides the certificate MAYBE. Strict Trs: { f(h(x), y) -> h(f(y, f(x, h(f(a(), a()))))) } Obligation: innermost runtime complexity Answer: MAYBE We add following dependency tuples: Strict DPs: { f^#(h(x), y) -> c_1(f^#(y, f(x, h(f(a(), a())))), f^#(x, h(f(a(), a()))), f^#(a(), a())) } and mark the set of starting terms. We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { f^#(h(x), y) -> c_1(f^#(y, f(x, h(f(a(), a())))), f^#(x, h(f(a(), a()))), f^#(a(), a())) } Weak Trs: { f(h(x), y) -> h(f(y, f(x, h(f(a(), a()))))) } Obligation: innermost runtime complexity Answer: MAYBE Due to missing edges in the dependency-graph, the right-hand sides of following rules could be simplified: { f^#(h(x), y) -> c_1(f^#(y, f(x, h(f(a(), a())))), f^#(x, h(f(a(), a()))), f^#(a(), a())) } We are left with following problem, upon which TcT provides the certificate MAYBE. Strict DPs: { f^#(h(x), y) -> c_1(f^#(y, f(x, h(f(a(), a())))), f^#(x, h(f(a(), a())))) } Weak Trs: { f(h(x), y) -> h(f(y, f(x, h(f(a(), a()))))) } Obligation: innermost runtime complexity Answer: MAYBE The input cannot be shown compatible Arrrr..