WORST_CASE(?,O(n^1)) * Step 1: NaturalMI WORST_CASE(?,O(n^1)) + Considered Problem: - Strict TRS: b(x,b(z,y)) -> f(b(f(f(z)),c(x,z,y))) b(y,z) -> z f(c(a(),z,x)) -> b(a(),z) - Signature: {b/2,f/1} / {a/0,c/3} - Obligation: innermost runtime complexity wrt. defined symbols {b,f} and constructors {a,c} + Applied Processor: NaturalMI {miDimension = 2, miDegree = 1, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Nothing} + Details: We apply a matrix interpretation of kind constructor based matrix interpretation (containing no more than 1 non-zero interpretation-entries in the diagonal of the component-wise maxima): The following argument positions are considered usable: uargs(b) = {1}, uargs(f) = {1} Following symbols are considered usable: {b,f} TcT has computed the following interpretation: p(a) = [0] [0] p(b) = [4 1] x1 + [1 1] x2 + [2] [3 0] [2 2] [3] p(c) = [1 1] x2 + [1 1] x3 + [3] [0 0] [0 0] [1] p(f) = [1 0] x1 + [0] [2 0] [0] Following rules are strictly oriented: b(x,b(z,y)) = [4 1] x + [3 3] y + [ 7 1] z + [7] [3 0] [6 6] [14 2] [13] > [1 1] y + [ 7 1] z + [6] [2 2] [14 2] [12] = f(b(f(f(z)),c(x,z,y))) b(y,z) = [4 1] y + [1 1] z + [2] [3 0] [2 2] [3] > [1 0] z + [0] [0 1] [0] = z f(c(a(),z,x)) = [1 1] x + [1 1] z + [3] [2 2] [2 2] [6] > [1 1] z + [2] [2 2] [3] = b(a(),z) Following rules are (at-least) weakly oriented: WORST_CASE(?,O(n^1))