*** 1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) c(c(c(y))) -> c(c(a(y,0()))) Weak DP Rules: Weak TRS Rules: Signature: {c/1} / {0/0,a/2} Obligation: Innermost basic terms: {c}/{0,a} Applied Processor: InnermostRuleRemoval Proof: Arguments of following rules are not normal-forms. c(c(c(y))) -> c(c(a(y,0()))) All above mentioned rules can be savely removed. *** 1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Weak DP Rules: Weak TRS Rules: Signature: {c/1} / {0/0,a/2} Obligation: Innermost basic terms: {c}/{0,a} Applied Processor: DependencyPairs {dpKind_ = DT} Proof: We add the following dependency tuples: Strict DPs c#(y) -> c_1() c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) Weak DPs and mark the set of starting terms. *** 1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: c#(y) -> c_1() c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) Strict TRS Rules: Weak DP Rules: Weak TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Signature: {c/1,c#/1} / {0/0,a/2,c_1/0,c_2/3} Obligation: Innermost basic terms: {c#}/{0,a} Applied Processor: PredecessorEstimation {onSelection = all simple predecessor estimation selector} Proof: We estimate the number of application of {1} by application of Pre({1}) = {2}. Here rules are labelled as follows: 1: c#(y) -> c_1() 2: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))) ,c#(c(0())) ,c#(0())) *** 1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) Strict TRS Rules: Weak DP Rules: c#(y) -> c_1() Weak TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Signature: {c/1,c#/1} / {0/0,a/2,c_1/0,c_2/3} Obligation: Innermost basic terms: {c#}/{0,a} Applied Processor: RemoveWeakSuffixes Proof: Consider the dependency graph 1:S:c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) -->_3 c#(y) -> c_1():2 -->_2 c#(y) -> c_1():2 -->_1 c#(y) -> c_1():2 -->_2 c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())):1 -->_1 c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())):1 2:W:c#(y) -> c_1() The following weak DPs constitute a sub-graph of the DG that is closed under successors. The DPs are removed. 2: c#(y) -> c_1() *** 1.1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) Strict TRS Rules: Weak DP Rules: Weak TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Signature: {c/1,c#/1} / {0/0,a/2,c_1/0,c_2/3} Obligation: Innermost basic terms: {c#}/{0,a} Applied Processor: SimplifyRHS Proof: Consider the dependency graph 1:S:c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())) -->_2 c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())):1 -->_1 c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0())),c#(0())):1 Due to missing edges in the depndency graph, the right-hand sides of following rules could be simplified: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0()))) *** 1.1.1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0()))) Strict TRS Rules: Weak DP Rules: Weak TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Signature: {c/1,c#/1} / {0/0,a/2,c_1/0,c_2/2} Obligation: Innermost basic terms: {c#}/{0,a} Applied Processor: NaturalMI {miDimension = 1, miDegree = 0, 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 0 non-zero interpretation-entries in the diagonal of the component-wise maxima): The following argument positions are considered usable: uargs(c_2) = {1,2} Following symbols are considered usable: {c,c#} TcT has computed the following interpretation: p(0) = [0] p(a) = [12] p(c) = [2] x1 + [1] p(c#) = [2] x1 + [6] p(c_1) = [0] p(c_2) = [1] x1 + [1] x2 + [4] Following rules are strictly oriented: c#(a(a(0(),x),y)) = [30] > [24] = c_2(c#(c(c(0()))),c#(c(0()))) Following rules are (at-least) weakly oriented: c(y) = [2] y + [1] >= [1] y + [0] = y c(a(a(0(),x),y)) = [25] >= [12] = a(c(c(c(0()))),y) *** 1.1.1.1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: Weak DP Rules: c#(a(a(0(),x),y)) -> c_2(c#(c(c(0()))),c#(c(0()))) Weak TRS Rules: c(y) -> y c(a(a(0(),x),y)) -> a(c(c(c(0()))),y) Signature: {c/1,c#/1} / {0/0,a/2,c_1/0,c_2/2} Obligation: Innermost basic terms: {c#}/{0,a} Applied Processor: EmptyProcessor Proof: The problem is already closed. The intended complexity is O(1).