*** 1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: f(x,c(y)) -> f(x,s(f(y,y))) f(s(x),y) -> f(x,s(c(y))) Weak DP Rules: Weak TRS Rules: Signature: {f/2} / {c/1,s/1} Obligation: Innermost basic terms: {f}/{c,s} Applied Processor: WeightGap {wgDimension = 1, wgDegree = 1, wgKind = Algebraic, wgUArgs = UArgs, wgOn = WgOnAny} Proof: The weightgap principle applies using the following nonconstant growth matrix-interpretation: We apply a matrix interpretation of kind constructor based matrix interpretation: The following argument positions are considered usable: uargs(f) = {2}, uargs(s) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(c) = [1] x1 + [10] p(f) = [1] x2 + [7] p(s) = [1] x1 + [0] Following rules are strictly oriented: f(x,c(y)) = [1] y + [17] > [1] y + [14] = f(x,s(f(y,y))) Following rules are (at-least) weakly oriented: f(s(x),y) = [1] y + [7] >= [1] y + [17] = f(x,s(c(y))) Further, it can be verified that all rules not oriented are covered by the weightgap condition. *** 1.1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: f(s(x),y) -> f(x,s(c(y))) Weak DP Rules: Weak TRS Rules: f(x,c(y)) -> f(x,s(f(y,y))) Signature: {f/2} / {c/1,s/1} Obligation: Innermost basic terms: {f}/{c,s} Applied Processor: NaturalMI {miDimension = 3, miDegree = 2, miKind = Algebraic, uargs = UArgs, urules = URules, selector = Just any strict-rules, greedy = NoGreedy} Proof: We apply a matrix interpretation of kind constructor based matrix interpretation (containing no more than 2 non-zero interpretation-entries in the diagonal of the component-wise maxima): The following argument positions are considered usable: uargs(f) = {2}, uargs(s) = {1} Following symbols are considered usable: {f} TcT has computed the following interpretation: p(c) = [1 6 0] [0] [0 0 2] x1 + [0] [0 0 1] [0] p(f) = [0 0 3] [1 6 0] [0] [0 0 1] x1 + [0 0 0] x2 + [0] [5 0 0] [1 6 0] [4] p(s) = [1 0 0] [0] [0 0 0] x1 + [0] [0 0 1] [3] Following rules are strictly oriented: f(s(x),y) = [0 0 3] [1 6 0] [9] [0 0 1] x + [0 0 0] y + [3] [5 0 0] [1 6 0] [4] > [0 0 3] [1 6 0] [0] [0 0 1] x + [0 0 0] y + [0] [5 0 0] [1 6 0] [4] = f(x,s(c(y))) Following rules are (at-least) weakly oriented: f(x,c(y)) = [0 0 3] [1 6 12] [0] [0 0 1] x + [0 0 0] y + [0] [5 0 0] [1 6 12] [4] >= [0 0 3] [1 6 3] [0] [0 0 1] x + [0 0 0] y + [0] [5 0 0] [1 6 3] [4] = f(x,s(f(y,y))) *** 1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: Weak DP Rules: Weak TRS Rules: f(x,c(y)) -> f(x,s(f(y,y))) f(s(x),y) -> f(x,s(c(y))) Signature: {f/2} / {c/1,s/1} Obligation: Innermost basic terms: {f}/{c,s} Applied Processor: EmptyProcessor Proof: The problem is already closed. The intended complexity is O(1).