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: [b#](x0, x1) = x0 + x1, [a] = 0, [f](x0) = x0 + 0, [c#](x0, x1, x2) = x0 + 2x1 + 2x2, [b](x0, x1) = 2x0 + 2x1 + 2, [c](x0, x1, x2) = 4x1 + 4x2 orientation: c#(y,x,f(z)) = 2x + y + 2z + 2 >= 2x + 2z + 2 = b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) = 2y + 2z + 4 >= 2y + 2z = c#(z,y,z) c#(y,x,f(z)) = 2x + y + 2z + 2 >= x + z = b#(z,x) b(b(y,z),c(a(),a(),a())) = 4y + 4z + 6 >= 4y + 4z + 0 = f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) = 6x + 6y + 4z + 4 >= z = z c(y,x,f(z)) = 4x + 4z + 4 >= 4x + 4z + 4 = 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: [b#](x0, x1) = 1x0 + x1 + 2, [a] = 0, [f](x0) = -2x0 + 0, [c#](x0, x1, x2) = x0 + 1x1 + 2x2 + 3, [b](x0, x1) = 1x0 + 2x1 + 2, [c](x0, x1, x2) = 5x0 + 1x1 + 4x2 + 0 orientation: c#(y,x,f(z)) = 1x + y + z + 3 >= 1x + z + 2 = b#(f(b(z,x)),z) b#(b(y,z),c(a(),a(),a())) = 2y + 3z + 5 >= 1y + 2z + 3 = c#(z,y,z) b(b(y,z),c(a(),a(),a())) = 2y + 3z + 7 >= -1y + 3z + 0 = f(c(z,y,z)) f(b(b(a(),z),c(a(),x,y))) = 1x + 4y + 1z + 5 >= z = z c(y,x,f(z)) = 1x + 5y + 2z + 4 >= 1x + 2z + 2 = b(f(b(z,x)),z) problem: DPs: 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) Restore Modifier: DPs: 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) SCC Processor: #sccs: 0 #rules: 0 #arcs: 4/1