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: { :(z, +(x, f(y))) -> :(g(z, y), +(x, a())) , :(:(x, y), z) -> :(x, :(y, z)) , :(+(x, y), z) -> +(:(x, z), :(y, z)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We add the following dependency tuples: Strict DPs: { :^#(z, +(x, f(y))) -> c_1(:^#(g(z, y), +(x, a()))) , :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) , :^#(+(x, y), z) -> c_3(:^#(x, z), :^#(y, z)) } 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: { :^#(z, +(x, f(y))) -> c_1(:^#(g(z, y), +(x, a()))) , :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) , :^#(+(x, y), z) -> c_3(:^#(x, z), :^#(y, z)) } Weak Trs: { :(z, +(x, f(y))) -> :(g(z, y), +(x, a())) , :(:(x, y), z) -> :(x, :(y, z)) , :(+(x, y), z) -> +(:(x, z), :(y, z)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We estimate the number of application of {1} by applications of Pre({1}) = {2,3}. Here rules are labeled as follows: DPs: { 1: :^#(z, +(x, f(y))) -> c_1(:^#(g(z, y), +(x, a()))) , 2: :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) , 3: :^#(+(x, y), z) -> c_3(:^#(x, z), :^#(y, z)) } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict DPs: { :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) , :^#(+(x, y), z) -> c_3(:^#(x, z), :^#(y, z)) } Weak DPs: { :^#(z, +(x, f(y))) -> c_1(:^#(g(z, y), +(x, a()))) } Weak Trs: { :(z, +(x, f(y))) -> :(g(z, y), +(x, a())) , :(:(x, y), z) -> :(x, :(y, z)) , :(+(x, y), z) -> +(:(x, z), :(y, z)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed. { :^#(z, +(x, f(y))) -> c_1(:^#(g(z, y), +(x, a()))) } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict DPs: { :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) , :^#(+(x, y), z) -> c_3(:^#(x, z), :^#(y, z)) } Weak Trs: { :(z, +(x, f(y))) -> :(g(z, y), +(x, a())) , :(:(x, y), z) -> :(x, :(y, z)) , :(+(x, y), z) -> +(:(x, z), :(y, z)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) Due to missing edges in the dependency-graph, the right-hand sides of following rules could be simplified: { :^#(:(x, y), z) -> c_2(:^#(x, :(y, z)), :^#(y, z)) } We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict DPs: { :^#(:(x, y), z) -> c_1(:^#(y, z)) , :^#(+(x, y), z) -> c_2(:^#(x, z), :^#(y, z)) } Weak Trs: { :(z, +(x, f(y))) -> :(g(z, y), +(x, a())) , :(:(x, y), z) -> :(x, :(y, z)) , :(+(x, y), z) -> +(:(x, z), :(y, z)) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^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(n^1)). Strict DPs: { :^#(:(x, y), z) -> c_1(:^#(y, z)) , :^#(+(x, y), z) -> c_2(:^#(x, z), :^#(y, z)) } 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. DPs: { 1: :^#(:(x, y), z) -> c_1(:^#(y, z)) , 2: :^#(+(x, y), z) -> c_2(:^#(x, z), :^#(y, z)) } Sub-proof: ---------- The following argument positions are usable: Uargs(c_1) = {1}, Uargs(c_2) = {1, 2} TcT has computed the following constructor-based matrix interpretation satisfying not(EDA). [:](x1, x2) = [7] x1 + [4] x2 + [4] [+](x1, x2) = [1] x1 + [1] x2 + [4] [f](x1) = [1] x1 + [0] [g](x1, x2) = [1] x1 + [1] x2 + [0] [a] = [0] [:^#](x1, x2) = [2] x1 + [0] [c_1](x1) = [7] x1 + [0] [c_2](x1, x2) = [7] x1 + [7] x2 + [0] [c_3](x1, x2) = [7] x1 + [7] x2 + [0] [c] = [0] [c_1](x1) = [1] x1 + [1] [c_2](x1, x2) = [1] x1 + [1] x2 + [3] The following symbols are considered usable {:^#} The order satisfies the following ordering constraints: [:^#(:(x, y), z)] = [14] x + [8] y + [8] > [2] y + [1] = [c_1(:^#(y, z))] [:^#(+(x, y), z)] = [2] x + [2] y + [8] > [2] x + [2] y + [3] = [c_2(:^#(x, z), :^#(y, z))] The strictly oriented rules are moved into the weak component. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak DPs: { :^#(:(x, y), z) -> c_1(:^#(y, z)) , :^#(+(x, y), z) -> c_2(:^#(x, z), :^#(y, z)) } 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. { :^#(:(x, y), z) -> c_1(:^#(y, z)) , :^#(+(x, y), z) -> c_2(:^#(x, z), :^#(y, z)) } 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))