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: { p(f(f(x))) -> q(f(g(x))) , p(g(g(x))) -> q(g(f(x))) , q(f(f(x))) -> p(f(g(x))) , q(g(g(x))) -> p(g(f(x))) } 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: { p(g(g(x))) -> q(g(f(x))) , q(g(g(x))) -> p(g(f(x))) } 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)). [p](x1) = [2 2] x1 + [0] [0 0] [0] [f](x1) = [1 0] x1 + [0] [0 0] [0] [q](x1) = [2 2] x1 + [0] [0 0] [0] [g](x1) = [1 0] x1 + [0] [0 1] [1] This order satisfies the following ordering constraints: [p(f(f(x)))] = [2 0] x + [0] [0 0] [0] >= [2 0] x + [0] [0 0] [0] = [q(f(g(x)))] [p(g(g(x)))] = [2 2] x + [4] [0 0] [0] > [2 0] x + [2] [0 0] [0] = [q(g(f(x)))] [q(f(f(x)))] = [2 0] x + [0] [0 0] [0] >= [2 0] x + [0] [0 0] [0] = [p(f(g(x)))] [q(g(g(x)))] = [2 2] x + [4] [0 0] [0] > [2 0] x + [2] [0 0] [0] = [p(g(f(x)))] 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: { p(f(f(x))) -> q(f(g(x))) , q(f(f(x))) -> p(f(g(x))) } Weak Trs: { p(g(g(x))) -> q(g(f(x))) , q(g(g(x))) -> p(g(f(x))) } 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: { p(f(f(x))) -> q(f(g(x))) , q(f(f(x))) -> p(f(g(x))) } 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)). [p](x1) = [2 1] x1 + [0] [0 0] [0] [f](x1) = [1 0] x1 + [1] [0 0] [0] [q](x1) = [2 1] x1 + [0] [0 0] [0] [g](x1) = [1 0] x1 + [0] [0 1] [2] This order satisfies the following ordering constraints: [p(f(f(x)))] = [2 0] x + [4] [0 0] [0] > [2 0] x + [2] [0 0] [0] = [q(f(g(x)))] [p(g(g(x)))] = [2 1] x + [4] [0 0] [0] >= [2 0] x + [4] [0 0] [0] = [q(g(f(x)))] [q(f(f(x)))] = [2 0] x + [4] [0 0] [0] > [2 0] x + [2] [0 0] [0] = [p(f(g(x)))] [q(g(g(x)))] = [2 1] x + [4] [0 0] [0] >= [2 0] x + [4] [0 0] [0] = [p(g(f(x)))] 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: { p(f(f(x))) -> q(f(g(x))) , p(g(g(x))) -> q(g(f(x))) , q(f(f(x))) -> p(f(g(x))) , q(g(g(x))) -> p(g(f(x))) } Obligation: innermost runtime complexity Answer: YES(O(1),O(1)) Empty rules are trivially bounded Hurray, we answered YES(O(1),O(n^1))