WORST_CASE(?,O(n^1)) * Step 1: NaturalMI WORST_CASE(?,O(n^1)) + Considered Problem: - Strict TRS: a__f(X) -> f(X) a__f(f(a())) -> a__f(g(f(a()))) mark(a()) -> a() mark(f(X)) -> a__f(X) mark(g(X)) -> g(mark(X)) - Signature: {a__f/1,mark/1} / {a/0,f/1,g/1} - Obligation: innermost runtime complexity wrt. defined symbols {a__f,mark} and constructors {a,f,g} + 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(g) = {1} Following symbols are considered usable: {a__f,mark} TcT has computed the following interpretation: p(a) = [0] [0] p(a__f) = [0 8] x1 + [2] [0 8] [2] p(f) = [0 2] x1 + [1] [0 0] [2] p(g) = [1 0] x1 + [2] [0 0] [0] p(mark) = [ 5 0] x1 + [10] [12 2] [0] Following rules are strictly oriented: a__f(X) = [0 8] X + [2] [0 8] [2] > [0 2] X + [1] [0 0] [2] = f(X) a__f(f(a())) = [18] [18] > [2] [2] = a__f(g(f(a()))) mark(a()) = [10] [0] > [0] [0] = a() mark(f(X)) = [0 10] X + [15] [0 24] [16] > [0 8] X + [2] [0 8] [2] = a__f(X) mark(g(X)) = [ 5 0] X + [20] [12 0] [24] > [5 0] X + [12] [0 0] [0] = g(mark(X)) Following rules are (at-least) weakly oriented: WORST_CASE(?,O(n^1))