*** 1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: goal(xs,ys) -> overlap(xs,ys) member(x,Nil()) -> False() member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) overlap(Nil(),ys) -> False() Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} 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(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(!EQ) = [0] p(0) = [0] p(Cons) = [1] x1 + [1] x2 + [0] p(False) = [0] p(Nil) = [0] p(S) = [1] x1 + [0] p(True) = [0] p(goal) = [4] x1 + [0] p(member) = [0] p(member[Ite][True][Ite]) = [1] x1 + [0] p(notEmpty) = [0] p(overlap) = [4] x1 + [7] p(overlap[Ite][True][Ite]) = [1] x1 + [4] x2 + [7] Following rules are strictly oriented: overlap(Nil(),ys) = [7] > [0] = False() Following rules are (at-least) weakly oriented: !EQ(0(),0()) = [0] >= [0] = True() !EQ(0(),S(y)) = [0] >= [0] = False() !EQ(S(x),0()) = [0] >= [0] = False() !EQ(S(x),S(y)) = [0] >= [0] = !EQ(x,y) goal(xs,ys) = [4] xs + [0] >= [4] xs + [7] = overlap(xs,ys) member(x,Nil()) = [0] >= [0] = False() member(x',Cons(x,xs)) = [0] >= [0] = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) member[Ite][True][Ite](False() = [0] ,x' ,Cons(x,xs)) >= [0] = member(x',xs) member[Ite][True][Ite](True() = [0] ,x ,xs) >= [0] = True() notEmpty(Cons(x,xs)) = [0] >= [0] = True() notEmpty(Nil()) = [0] >= [0] = False() overlap(Cons(x,xs),ys) = [4] x + [4] xs + [7] >= [4] x + [4] xs + [7] = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) overlap[Ite][True][Ite](False() = [4] x + [4] xs + [7] ,Cons(x,xs) ,ys) >= [4] xs + [7] = overlap(xs,ys) overlap[Ite][True][Ite](True() = [4] xs + [7] ,xs ,ys) >= [0] = True() 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: goal(xs,ys) -> overlap(xs,ys) member(x,Nil()) -> False() member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} 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(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(!EQ) = [0] p(0) = [0] p(Cons) = [4] p(False) = [0] p(Nil) = [0] p(S) = [0] p(True) = [0] p(goal) = [4] x1 + [5] p(member) = [0] p(member[Ite][True][Ite]) = [1] x1 + [1] x3 + [0] p(notEmpty) = [0] p(overlap) = [3] p(overlap[Ite][True][Ite]) = [1] x1 + [1] x2 + [0] Following rules are strictly oriented: goal(xs,ys) = [4] xs + [5] > [3] = overlap(xs,ys) Following rules are (at-least) weakly oriented: !EQ(0(),0()) = [0] >= [0] = True() !EQ(0(),S(y)) = [0] >= [0] = False() !EQ(S(x),0()) = [0] >= [0] = False() !EQ(S(x),S(y)) = [0] >= [0] = !EQ(x,y) member(x,Nil()) = [0] >= [0] = False() member(x',Cons(x,xs)) = [0] >= [4] = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) member[Ite][True][Ite](False() = [4] ,x' ,Cons(x,xs)) >= [0] = member(x',xs) member[Ite][True][Ite](True() = [1] xs + [0] ,x ,xs) >= [0] = True() notEmpty(Cons(x,xs)) = [0] >= [0] = True() notEmpty(Nil()) = [0] >= [0] = False() overlap(Cons(x,xs),ys) = [3] >= [4] = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) overlap(Nil(),ys) = [3] >= [0] = False() overlap[Ite][True][Ite](False() = [4] ,Cons(x,xs) ,ys) >= [3] = overlap(xs,ys) overlap[Ite][True][Ite](True() = [1] xs + [0] ,xs ,ys) >= [0] = True() Further, it can be verified that all rules not oriented are covered by the weightgap condition. *** 1.1.1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: member(x,Nil()) -> False() member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) goal(xs,ys) -> overlap(xs,ys) member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} 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(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(!EQ) = [2] p(0) = [0] p(Cons) = [1] x1 + [1] x2 + [0] p(False) = [1] p(Nil) = [0] p(S) = [1] x1 + [0] p(True) = [2] p(goal) = [6] x2 + [5] p(member) = [0] p(member[Ite][True][Ite]) = [1] x1 + [0] p(notEmpty) = [3] p(overlap) = [6] x2 + [2] p(overlap[Ite][True][Ite]) = [1] x1 + [6] x3 + [4] Following rules are strictly oriented: notEmpty(Cons(x,xs)) = [3] > [2] = True() notEmpty(Nil()) = [3] > [1] = False() Following rules are (at-least) weakly oriented: !EQ(0(),0()) = [2] >= [2] = True() !EQ(0(),S(y)) = [2] >= [1] = False() !EQ(S(x),0()) = [2] >= [1] = False() !EQ(S(x),S(y)) = [2] >= [2] = !EQ(x,y) goal(xs,ys) = [6] ys + [5] >= [6] ys + [2] = overlap(xs,ys) member(x,Nil()) = [0] >= [1] = False() member(x',Cons(x,xs)) = [0] >= [2] = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) member[Ite][True][Ite](False() = [1] ,x' ,Cons(x,xs)) >= [0] = member(x',xs) member[Ite][True][Ite](True() = [2] ,x ,xs) >= [2] = True() overlap(Cons(x,xs),ys) = [6] ys + [2] >= [6] ys + [4] = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) overlap(Nil(),ys) = [6] ys + [2] >= [1] = False() overlap[Ite][True][Ite](False() = [6] ys + [5] ,Cons(x,xs) ,ys) >= [6] ys + [2] = overlap(xs,ys) overlap[Ite][True][Ite](True() = [6] ys + [6] ,xs ,ys) >= [2] = True() Further, it can be verified that all rules not oriented are covered by the weightgap condition. *** 1.1.1.1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: member(x,Nil()) -> False() member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) goal(xs,ys) -> overlap(xs,ys) member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} 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(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(!EQ) = [1] p(0) = [0] p(Cons) = [1] p(False) = [1] p(Nil) = [1] p(S) = [0] p(True) = [1] p(goal) = [1] p(member) = [2] p(member[Ite][True][Ite]) = [1] x1 + [5] p(notEmpty) = [2] p(overlap) = [1] p(overlap[Ite][True][Ite]) = [1] x1 + [2] x2 + [0] Following rules are strictly oriented: member(x,Nil()) = [2] > [1] = False() Following rules are (at-least) weakly oriented: !EQ(0(),0()) = [1] >= [1] = True() !EQ(0(),S(y)) = [1] >= [1] = False() !EQ(S(x),0()) = [1] >= [1] = False() !EQ(S(x),S(y)) = [1] >= [1] = !EQ(x,y) goal(xs,ys) = [1] >= [1] = overlap(xs,ys) member(x',Cons(x,xs)) = [2] >= [6] = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) member[Ite][True][Ite](False() = [6] ,x' ,Cons(x,xs)) >= [2] = member(x',xs) member[Ite][True][Ite](True() = [6] ,x ,xs) >= [1] = True() notEmpty(Cons(x,xs)) = [2] >= [1] = True() notEmpty(Nil()) = [2] >= [1] = False() overlap(Cons(x,xs),ys) = [1] >= [4] = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) overlap(Nil(),ys) = [1] >= [1] = False() overlap[Ite][True][Ite](False() = [3] ,Cons(x,xs) ,ys) >= [1] = overlap(xs,ys) overlap[Ite][True][Ite](True() = [2] xs + [1] ,xs ,ys) >= [1] = True() Further, it can be verified that all rules not oriented are covered by the weightgap condition. *** 1.1.1.1.1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) goal(xs,ys) -> overlap(xs,ys) member(x,Nil()) -> False() member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} 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(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {} TcT has computed the following interpretation: p(!EQ) = [4] p(0) = [0] p(Cons) = [1] x1 + [1] x2 + [2] p(False) = [0] p(Nil) = [1] p(S) = [1] x1 + [4] p(True) = [2] p(goal) = [5] x1 + [1] x2 + [7] p(member) = [0] p(member[Ite][True][Ite]) = [1] x1 + [0] p(notEmpty) = [5] p(overlap) = [5] x1 + [5] p(overlap[Ite][True][Ite]) = [1] x1 + [5] x2 + [4] Following rules are strictly oriented: overlap(Cons(x,xs),ys) = [5] x + [5] xs + [15] > [5] x + [5] xs + [14] = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) Following rules are (at-least) weakly oriented: !EQ(0(),0()) = [4] >= [2] = True() !EQ(0(),S(y)) = [4] >= [0] = False() !EQ(S(x),0()) = [4] >= [0] = False() !EQ(S(x),S(y)) = [4] >= [4] = !EQ(x,y) goal(xs,ys) = [5] xs + [1] ys + [7] >= [5] xs + [5] = overlap(xs,ys) member(x,Nil()) = [0] >= [0] = False() member(x',Cons(x,xs)) = [0] >= [4] = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) member[Ite][True][Ite](False() = [0] ,x' ,Cons(x,xs)) >= [0] = member(x',xs) member[Ite][True][Ite](True() = [2] ,x ,xs) >= [2] = True() notEmpty(Cons(x,xs)) = [5] >= [2] = True() notEmpty(Nil()) = [5] >= [0] = False() overlap(Nil(),ys) = [10] >= [0] = False() overlap[Ite][True][Ite](False() = [5] x + [5] xs + [14] ,Cons(x,xs) ,ys) >= [5] xs + [5] = overlap(xs,ys) overlap[Ite][True][Ite](True() = [5] xs + [6] ,xs ,ys) >= [2] = True() Further, it can be verified that all rules not oriented are covered by the weightgap condition. *** 1.1.1.1.1.1 Progress [(O(1),O(n^2))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) goal(xs,ys) -> overlap(xs,ys) member(x,Nil()) -> False() member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} Applied Processor: NaturalPI {shape = Mixed 2, restrict = Restrict, uargs = UArgs, urules = URules, selector = Just any strict-rules, greedy = NoGreedy} Proof: We apply a polynomial interpretation of kind constructor-based(mixed(2)): The following argument positions are considered usable: uargs(member[Ite][True][Ite]) = {1}, uargs(overlap[Ite][True][Ite]) = {1} Following symbols are considered usable: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]} TcT has computed the following interpretation: p(!EQ) = 0 p(0) = 0 p(Cons) = 1 + x2 p(False) = 0 p(Nil) = 0 p(S) = 0 p(True) = 0 p(goal) = 6 + 6*x1 + 6*x1*x2 + 5*x1^2 + 6*x2 + 4*x2^2 p(member) = 2 + 3*x2 p(member[Ite][True][Ite]) = 2*x1 + 3*x3 p(notEmpty) = 6*x1 + 4*x1^2 p(overlap) = 4 + 4*x1 + 6*x1*x2 + 6*x2 p(overlap[Ite][True][Ite]) = 2*x1 + 4*x2 + 6*x2*x3 Following rules are strictly oriented: member(x',Cons(x,xs)) = 5 + 3*xs > 3 + 3*xs = member[Ite][True][Ite](!EQ(x,x') ,x' ,Cons(x,xs)) Following rules are (at-least) weakly oriented: !EQ(0(),0()) = 0 >= 0 = True() !EQ(0(),S(y)) = 0 >= 0 = False() !EQ(S(x),0()) = 0 >= 0 = False() !EQ(S(x),S(y)) = 0 >= 0 = !EQ(x,y) goal(xs,ys) = 6 + 6*xs + 6*xs*ys + 5*xs^2 + 6*ys + 4*ys^2 >= 4 + 4*xs + 6*xs*ys + 6*ys = overlap(xs,ys) member(x,Nil()) = 2 >= 0 = False() member[Ite][True][Ite](False() = 3 + 3*xs ,x' ,Cons(x,xs)) >= 2 + 3*xs = member(x',xs) member[Ite][True][Ite](True() = 3*xs ,x ,xs) >= 0 = True() notEmpty(Cons(x,xs)) = 10 + 14*xs + 4*xs^2 >= 0 = True() notEmpty(Nil()) = 0 >= 0 = False() overlap(Cons(x,xs),ys) = 8 + 4*xs + 6*xs*ys + 12*ys >= 8 + 4*xs + 6*xs*ys + 12*ys = overlap[Ite][True][Ite](member(x ,ys) ,Cons(x,xs) ,ys) overlap(Nil(),ys) = 4 + 6*ys >= 0 = False() overlap[Ite][True][Ite](False() = 4 + 4*xs + 6*xs*ys + 6*ys ,Cons(x,xs) ,ys) >= 4 + 4*xs + 6*xs*ys + 6*ys = overlap(xs,ys) overlap[Ite][True][Ite](True() = 4*xs + 6*xs*ys ,xs ,ys) >= 0 = True() *** 1.1.1.1.1.1.1 Progress [(O(1),O(1))] *** Considered Problem: Strict DP Rules: Strict TRS Rules: Weak DP Rules: Weak TRS Rules: !EQ(0(),0()) -> True() !EQ(0(),S(y)) -> False() !EQ(S(x),0()) -> False() !EQ(S(x),S(y)) -> !EQ(x,y) goal(xs,ys) -> overlap(xs,ys) member(x,Nil()) -> False() member(x',Cons(x,xs)) -> member[Ite][True][Ite](!EQ(x,x'),x',Cons(x,xs)) member[Ite][True][Ite](False(),x',Cons(x,xs)) -> member(x',xs) member[Ite][True][Ite](True(),x,xs) -> True() notEmpty(Cons(x,xs)) -> True() notEmpty(Nil()) -> False() overlap(Cons(x,xs),ys) -> overlap[Ite][True][Ite](member(x,ys),Cons(x,xs),ys) overlap(Nil(),ys) -> False() overlap[Ite][True][Ite](False(),Cons(x,xs),ys) -> overlap(xs,ys) overlap[Ite][True][Ite](True(),xs,ys) -> True() Signature: {!EQ/2,goal/2,member/2,member[Ite][True][Ite]/3,notEmpty/1,overlap/2,overlap[Ite][True][Ite]/3} / {0/0,Cons/2,False/0,Nil/0,S/1,True/0} Obligation: Innermost basic terms: {!EQ,goal,member,member[Ite][True][Ite],notEmpty,overlap,overlap[Ite][True][Ite]}/{0,Cons,False,Nil,S,True} Applied Processor: EmptyProcessor Proof: The problem is already closed. The intended complexity is O(1).