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(c(X, s(Y))) -> f(c(s(X), Y)) , g(c(s(X), Y)) -> f(c(X, s(Y))) } 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. Trs: { g(c(s(X), Y)) -> f(c(X, s(Y))) } The induced complexity on above rules (modulo remaining rules) is YES(?,O(n^1)) . These rules are moved into the corresponding weak component(s). Sub-proof: ---------- TcT has computed the following constructor-based matrix interpretation satisfying not(EDA). [f](x1) = [1] x1 + [0] [c](x1, x2) = [1] x1 + [1] x2 + [0] [s](x1) = [1] x1 + [0] [g](x1) = [2] x1 + [3] This order satisfies the following ordering constraints: [f(c(X, s(Y)))] = [1] X + [1] Y + [0] >= [1] X + [1] Y + [0] = [f(c(s(X), Y))] [g(c(s(X), Y))] = [2] X + [2] Y + [3] > [1] X + [1] Y + [0] = [f(c(X, s(Y)))] We return to the main proof. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(n^1)). Strict Trs: { f(c(X, s(Y))) -> f(c(s(X), Y)) } Weak Trs: { g(c(s(X), Y)) -> f(c(X, s(Y))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(n^1)) We use the processor 'matrix interpretation of dimension 2' to orient following rules strictly. Trs: { f(c(X, s(Y))) -> f(c(s(X), Y)) } The induced complexity on above rules (modulo remaining rules) is YES(?,O(n^1)) . These rules are moved into the corresponding weak component(s). Sub-proof: ---------- TcT has computed the following constructor-based matrix interpretation satisfying not(EDA) and not(IDA(1)). [f](x1) = [1 1] x1 + [0] [0 0] [0] [c](x1, x2) = [1 0] x1 + [1 0] x2 + [0] [0 0] [0 1] [0] [s](x1) = [1 0] x1 + [0] [0 1] [1] [g](x1) = [1 1] x1 + [3] [0 0] [3] This order satisfies the following ordering constraints: [f(c(X, s(Y)))] = [1 0] X + [1 1] Y + [1] [0 0] [0 0] [0] > [1 0] X + [1 1] Y + [0] [0 0] [0 0] [0] = [f(c(s(X), Y))] [g(c(s(X), Y))] = [1 0] X + [1 1] Y + [3] [0 0] [0 0] [3] > [1 0] X + [1 1] Y + [1] [0 0] [0 0] [0] = [f(c(X, s(Y)))] We return to the main proof. We are left with following problem, upon which TcT provides the certificate YES(O(1),O(1)). Weak Trs: { f(c(X, s(Y))) -> f(c(s(X), Y)) , g(c(s(X), Y)) -> f(c(X, s(Y))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Empty rules are trivially bounded Hurray, we answered YES(O(1),O(n^1))