YES Problem: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) Proof: DP Processor: DPs: b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) b#(b(y,z),c(a(),a(),a())) -> f#(c(z,y,z)) c#(y,x,f(z)) -> b#(z,x) c#(y,x,f(z)) -> f#(b(z,x)) c#(y,x,f(z)) -> b#(f(b(z,x)),z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) TDG Processor: DPs: b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) b#(b(y,z),c(a(),a(),a())) -> f#(c(z,y,z)) c#(y,x,f(z)) -> b#(z,x) c#(y,x,f(z)) -> f#(b(z,x)) c#(y,x,f(z)) -> b#(f(b(z,x)),z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) graph: c#(y,x,f(z)) -> b#(f(b(z,x)),z) -> b#(b(y,z),c(a(),a(),a())) -> f#(c(z,y,z)) c#(y,x,f(z)) -> b#(f(b(z,x)),z) -> b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) c#(y,x,f(z)) -> b#(z,x) -> b#(b(y,z),c(a(),a(),a())) -> f#(c(z,y,z)) c#(y,x,f(z)) -> b#(z,x) -> b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) -> c#(y,x,f(z)) -> b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) -> c#(y,x,f(z)) -> f#(b(z,x)) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) -> c#(y,x,f(z)) -> b#(z,x) SCC Processor: #sccs: 1 #rules: 3 #arcs: 7/25 DPs: c#(y,x,f(z)) -> b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) c#(y,x,f(z)) -> b#(z,x) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) Arctic Interpretation Processor: dimension: 1 usable rules: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) interpretation: [c#](x0, x1, x2) = x0 + 1x1 + 1x2, [b#](x0, x1) = x0, [f](x0) = x0 + 1, [c](x0, x1, x2) = 2x1 + 2x2, [a] = 0, [b](x0, x1) = 1x0 + 1x1 + 0 orientation: c#(y,x,f(z)) = 1x + y + 1z + 2 >= 1x + 1z + 1 = b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) = 1y + 1z + 0 >= 1y + 1z = c#(z,y,z) c#(y,x,f(z)) = 1x + y + 1z + 2 >= z = b#(z,x) b(b(y,z),c(a(),a(),a())) = 2y + 2z + 3 >= 2y + 2z + 1 = f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) = 3x + 3y + 2z + 2 >= z = z c(y,x,f(z)) = 2x + 2z + 3 >= 2x + 2z + 2 = b(f(b(z,x)),z) problem: DPs: c#(y,x,f(z)) -> b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) Restore Modifier: DPs: c#(y,x,f(z)) -> b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) Arctic Interpretation Processor: dimension: 1 usable rules: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) interpretation: [c#](x0, x1, x2) = x0 + 1x1 + 2x2 + 0, [b#](x0, x1) = x0 + 0, [f](x0) = -3x0 + 0, [c](x0, x1, x2) = x0 + 3x1 + 5x2 + 0, [a] = 0, [b](x0, x1) = 1x0 + 2x1 + -5 orientation: c#(y,x,f(z)) = 1x + y + -1z + 2 >= -1x + -2z + 0 = b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) = 1y + 2z + 0 >= 1y + 2z + 0 = c#(z,y,z) b(b(y,z),c(a(),a(),a())) = 2y + 3z + 7 >= y + 2z + 0 = f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) = 2x + 4y + z + 0 >= z = z c(y,x,f(z)) = 3x + y + 2z + 5 >= x + 2z + 1 = b(f(b(z,x)),z) problem: DPs: b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) Restore Modifier: DPs: b#(b(y,z),c(a(),a(),a())) -> c#(z,y,z) TRS: b(b(y,z),c(a(),a(),a())) -> f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) -> z c(y,x,f(z)) -> b(f(b(z,x)),z) SCC Processor: #sccs: 0 #rules: 0 #arcs: 4/1