YES Problem: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Proof: DP Processor: DPs: plus#(s(x),y) -> plus#(x,y) times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) 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)) div#(div(x,y),z) -> times#(y,z) div#(div(x,y),z) -> div#(x,times(y,z)) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) TDG Processor: DPs: plus#(s(x),y) -> plus#(x,y) times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) 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)) div#(div(x,y),z) -> times#(y,z) div#(div(x,y),z) -> div#(x,times(y,z)) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) graph: quot#(s(x),s(y),z) -> quot#(x,y,z) -> quot#(x,0(),s(z)) -> div#(x,s(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)) -> div#(div(x,y),z) -> div#(x,times(y,z)) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(div(x,y),z) -> times#(y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> div#(x,times(y,z)) -> div#(div(x,y),z) -> div#(x,times(y,z)) div#(div(x,y),z) -> div#(x,times(y,z)) -> div#(div(x,y),z) -> times#(y,z) div#(div(x,y),z) -> div#(x,times(y,z)) -> div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> times#(y,z) -> times#(s(x),y) -> plus#(y,times(x,y)) div#(div(x,y),z) -> times#(y,z) -> times#(s(x),y) -> times#(x,y) div#(x,y) -> quot#(x,y,y) -> quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) -> quot#(s(x),s(y),z) -> quot#(x,y,z) times#(s(x),y) -> times#(x,y) -> times#(s(x),y) -> plus#(y,times(x,y)) times#(s(x),y) -> times#(x,y) -> times#(s(x),y) -> times#(x,y) times#(s(x),y) -> plus#(y,times(x,y)) -> plus#(s(x),y) -> plus#(x,y) plus#(s(x),y) -> plus#(x,y) -> plus#(s(x),y) -> plus#(x,y) SCC Processor: #sccs: 3 #rules: 6 #arcs: 16/64 DPs: quot#(s(x),s(y),z) -> quot#(x,y,z) quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) div#(div(x,y),z) -> div#(x,times(y,z)) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Subterm Criterion Processor: simple projection: pi(div#) = 0 pi(quot#) = 0 problem: DPs: quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) EDG Processor: DPs: quot#(x,0(),s(z)) -> div#(x,s(z)) div#(x,y) -> quot#(x,y,y) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) graph: quot#(x,0(),s(z)) -> div#(x,s(z)) -> div#(x,y) -> quot#(x,y,y) div#(x,y) -> quot#(x,y,y) -> quot#(x,0(),s(z)) -> div#(x,s(z)) Arctic Interpretation Processor: dimension: 1 interpretation: [quot#](x0, x1, x2) = x1 + x2, [div#](x0, x1) = x1 + 0, [quot](x0, x1, x2) = 1, [div](x0, x1) = x0 + 1, [times](x0, x1) = x1 + 4, [s](x0) = 0, [plus](x0, x1) = x0 + x1 + 0, [0] = 1 orientation: quot#(x,0(),s(z)) = 1 >= 0 = div#(x,s(z)) div#(x,y) = y + 0 >= y = quot#(x,y,y) plus(x,0()) = x + 1 >= x = x plus(0(),y) = y + 1 >= y = y plus(s(x),y) = y + 0 >= 0 = s(plus(x,y)) times(0(),y) = y + 4 >= 1 = 0() times(s(0()),y) = y + 4 >= y = y times(s(x),y) = y + 4 >= y + 4 = plus(y,times(x,y)) div(0(),y) = 1 >= 1 = 0() div(x,y) = x + 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))) div(div(x,y),z) = x + 1 >= x + 1 = div(x,times(y,z)) problem: DPs: div#(x,y) -> quot#(x,y,y) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) SCC Processor: #sccs: 0 #rules: 0 #arcs: 2/1 DPs: times#(s(x),y) -> times#(x,y) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Subterm Criterion Processor: simple projection: pi(times#) = 0 problem: DPs: TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Qed DPs: plus#(s(x),y) -> plus#(x,y) TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Subterm Criterion Processor: simple projection: pi(plus#) = 0 problem: DPs: TRS: plus(x,0()) -> x plus(0(),y) -> y plus(s(x),y) -> s(plus(x,y)) times(0(),y) -> 0() times(s(0()),y) -> y times(s(x),y) -> plus(y,times(x,y)) 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))) div(div(x,y),z) -> div(x,times(y,z)) Qed