YES Problem: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) Proof: DP Processor: DPs: div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) TRS: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) EDG Processor: DPs: div#(x,y) -> quot#(x,y,y) quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) TRS: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) graph: quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(x,0(),s(z)) -> div#(x,s(z)) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(x,y) -> quot#(x,y,y) div#(x,y) -> quot#(x,y,y) -> quot#(s(x),s(y),z) -> quot#(x,y,z) div#(x,y) -> quot#(x,y,y) -> quot#(x,0(),s(z)) -> div#(x,s(z)) Subterm Criterion Processor: simple projection: pi(div#) = 0 pi(quot#) = 0 problem: DPs: div#(x,y) -> quot#(x,y,y) quot#(x,0(),s(z)) -> div#(x,s(z)) TRS: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) Matrix Interpretation Processor: dimension: 1 interpretation: [quot#](x0, x1, x2) = x1, [div#](x0, x1) = x1, [s](x0) = 0, [quot](x0, x1, x2) = 1, [div](x0, x1) = 1, [0] = 1 orientation: div#(x,y) = y >= y = quot#(x,y,y) quot#(x,0(),s(z)) = 1 >= 0 = div#(x,s(z)) div(0(),y) = 1 >= 1 = 0() div(x,y) = 1 >= 1 = quot(x,y,y) quot(0(),s(y),z) = 1 >= 1 = 0() quot(s(x),s(y),z) = 1 >= 1 = quot(x,y,z) quot(x,0(),s(z)) = 1 >= 0 = s(div(x,s(z))) problem: DPs: div#(x,y) -> quot#(x,y,y) TRS: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) Matrix Interpretation Processor: dimension: 1 interpretation: [quot#](x0, x1, x2) = 0, [div#](x0, x1) = 1, [s](x0) = 0, [quot](x0, x1, x2) = 0, [div](x0, x1) = 0, [0] = 0 orientation: div#(x,y) = 1 >= 0 = quot#(x,y,y) div(0(),y) = 0 >= 0 = 0() div(x,y) = 0 >= 0 = quot(x,y,y) quot(0(),s(y),z) = 0 >= 0 = 0() quot(s(x),s(y),z) = 0 >= 0 = quot(x,y,z) quot(x,0(),s(z)) = 0 >= 0 = s(div(x,s(z))) problem: DPs: TRS: div(0(),y) -> 0() div(x,y) -> quot(x,y,y) quot(0(),s(y),z) -> 0() quot(s(x),s(y),z) -> quot(x,y,z) quot(x,0(),s(z)) -> s(div(x,s(z))) Qed