YES Problem: app(app(map(),f),nil()) -> nil() app(app(map(),f),app(app(cons(),x),xs)) -> app(app(cons(),app(f,x)),app(app(map(),f),xs)) app(app(minus(),x),0()) -> x app(app(minus(),app(s(),x)),app(s(),y)) -> app(app(minus(),app(p(),app(s(),x))),app(p(),app(s(),y))) app(p(),app(s(),x)) -> x app(app(div(),0()),app(s(),y)) -> 0() app(app(div(),app(s(),x)),app(s(),y)) -> app(s(),app(app(div(),app(app(minus(),x),y)),app(s(),y))) Proof: Uncurry Processor: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) DP Processor: DPs: map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) map{2,#}(f,cons2(x,xs)) -> app#(f,x) minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(y)) minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(x)) minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) app#(map1(x4),x5) -> map{2,#}(x4,x5) app#(minus1(x4),x5) -> minus{2,#}(x4,x5) app#(p(),x5) -> p{1,#}(x5) app#(div1(x4),x5) -> div{2,#}(x4,x5) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) TDG Processor: DPs: map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) map{2,#}(f,cons2(x,xs)) -> app#(f,x) minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(y)) minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(x)) minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) app#(map1(x4),x5) -> map{2,#}(x4,x5) app#(minus1(x4),x5) -> minus{2,#}(x4,x5) app#(p(),x5) -> p{1,#}(x5) app#(div1(x4),x5) -> div{2,#}(x4,x5) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) graph: div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) -> div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) -> div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) -> minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(x)) div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(y)) minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) -> minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(x)) minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(y)) app#(div1(x4),x5) -> div{2,#}(x4,x5) -> div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) app#(div1(x4),x5) -> div{2,#}(x4,x5) -> div{2,#}(s1(x),s1(y)) -> minus{2,#}(x,y) app#(minus1(x4),x5) -> minus{2,#}(x4,x5) -> minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) app#(minus1(x4),x5) -> minus{2,#}(x4,x5) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(x)) app#(minus1(x4),x5) -> minus{2,#}(x4,x5) -> minus{2,#}(s1(x),s1(y)) -> p{1,#}(s1(y)) app#(map1(x4),x5) -> map{2,#}(x4,x5) -> map{2,#}(f,cons2(x,xs)) -> app#(f,x) app#(map1(x4),x5) -> map{2,#}(x4,x5) -> map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) map{2,#}(f,cons2(x,xs)) -> app#(f,x) -> app#(div1(x4),x5) -> div{2,#}(x4,x5) map{2,#}(f,cons2(x,xs)) -> app#(f,x) -> app#(p(),x5) -> p{1,#}(x5) map{2,#}(f,cons2(x,xs)) -> app#(f,x) -> app#(minus1(x4),x5) -> minus{2,#}(x4,x5) map{2,#}(f,cons2(x,xs)) -> app#(f,x) -> app#(map1(x4),x5) -> map{2,#}(x4,x5) map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) -> map{2,#}(f,cons2(x,xs)) -> app#(f,x) map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) -> map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) SCC Processor: #sccs: 3 #rules: 5 #arcs: 21/121 DPs: app#(map1(x4),x5) -> map{2,#}(x4,x5) map{2,#}(f,cons2(x,xs)) -> map{2,#}(f,xs) map{2,#}(f,cons2(x,xs)) -> app#(f,x) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) Subterm Criterion Processor: simple projection: pi(map{2,#}) = 1 pi(app#) = 1 problem: DPs: app#(map1(x4),x5) -> map{2,#}(x4,x5) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) SCC Processor: #sccs: 0 #rules: 0 #arcs: 5/1 DPs: div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) Usable Rule Processor: DPs: div{2,#}(s1(x),s1(y)) -> div{2,#}(minus2(x,y),s1(y)) TRS: minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x Arctic Interpretation Processor: dimension: 1 usable rules: minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x interpretation: [div{2,#}](x0, x1) = x0 + 0, [p1](x0) = -2x0 + 1, [s1](x0) = 4x0 + 1, [minus2](x0, x1) = 3x0, [0] = 3 orientation: div{2,#}(s1(x),s1(y)) = 4x + 1 >= 3x + 0 = div{2,#}(minus2(x,y),s1(y)) minus2(x,0()) = 3x >= x = x minus2(s1(x),s1(y)) = 7x + 4 >= 5x + 4 = minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) = 2x + 1 >= x = x problem: DPs: TRS: minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x Qed DPs: minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) TRS: map2(f,nil()) -> nil() map2(f,cons2(x,xs)) -> cons2(app(f,x),map2(f,xs)) minus2(x,0()) -> x minus2(s1(x),s1(y)) -> minus2(p1(s1(x)),p1(s1(y))) p1(s1(x)) -> x div2(0(),s1(y)) -> 0() div2(s1(x),s1(y)) -> s1(div2(minus2(x,y),s1(y))) app(map1(x4),x5) -> map2(x4,x5) app(map(),x5) -> map1(x5) app(cons1(x4),x5) -> cons2(x4,x5) app(cons(),x5) -> cons1(x5) app(minus1(x4),x5) -> minus2(x4,x5) app(minus(),x5) -> minus1(x5) app(s(),x5) -> s1(x5) app(p(),x5) -> p1(x5) app(div1(x4),x5) -> div2(x4,x5) app(div(),x5) -> div1(x5) Usable Rule Processor: DPs: minus{2,#}(s1(x),s1(y)) -> minus{2,#}(p1(s1(x)),p1(s1(y))) TRS: p1(s1(x)) -> x Semantic Labeling Processor: dimension: 2 usable rules: interpretation: [0 1] [p1](x0) = [0 1]x0, [1 1] [1] [s1](x0) = [1 1]x0 + [0] labeled: minus{2,#} s1 usable (for model): minus{2,#} s1 p1 argument filtering: pi(s1) = 0 pi(p1) = 0 pi(minus{2,#}) = [] precedence: minus{2,#} ~ p1 ~ s1 problem: DPs: TRS: p1(s1(x)) -> x Qed