YES Problem: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) Proof: DP Processor: DPs: a#(b(x1)) -> c#(b(x1)) c#(c(x1)) -> b#(x1) c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> c#(x1) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) TDG Processor: DPs: a#(b(x1)) -> c#(b(x1)) c#(c(x1)) -> b#(x1) c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> c#(x1) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(b(x1)) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> f#(x1) f#(g(x1)) -> c#(x1) -> c#(b(x1)) -> g#(x1) f#(g(x1)) -> c#(x1) -> c#(c(x1)) -> d#(b(x1)) f#(g(x1)) -> c#(x1) -> c#(c(x1)) -> b#(x1) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> b#(c(x1)) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> c#(x1) f#(g(x1)) -> a#(c(x1)) -> a#(b(x1)) -> c#(b(x1)) e#(x1) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) e#(x1) -> f#(x1) -> f#(g(x1)) -> c#(x1) e#(x1) -> b#(b(x1)) -> b#(b(x1)) -> f#(x1) e#(x1) -> b#(x1) -> b#(b(x1)) -> f#(x1) d#(x1) -> e#(x1) -> e#(x1) -> b#(b(x1)) d#(x1) -> e#(x1) -> e#(x1) -> b#(x1) d#(x1) -> e#(x1) -> e#(x1) -> f#(x1) d#(x1) -> c#(e(x1)) -> c#(b(x1)) -> g#(x1) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> d#(b(x1)) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> b#(x1) b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> c#(x1) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> c#(e(x1)) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> e#(x1) c#(c(x1)) -> b#(x1) -> b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) -> g#(f(x1)) -> e#(x1) a#(b(x1)) -> c#(b(x1)) -> c#(b(x1)) -> g#(x1) a#(b(x1)) -> c#(b(x1)) -> c#(c(x1)) -> d#(b(x1)) a#(b(x1)) -> c#(b(x1)) -> c#(c(x1)) -> b#(x1) a#(x1) -> b#(c(x1)) -> b#(b(x1)) -> f#(x1) a#(x1) -> c#(x1) -> c#(b(x1)) -> g#(x1) a#(x1) -> c#(x1) -> c#(c(x1)) -> d#(b(x1)) a#(x1) -> c#(x1) -> c#(c(x1)) -> b#(x1) Arctic Interpretation Processor: dimension: 2 interpretation: [g#](x0) = [0 0]x0 + [1], [f#](x0) = [0 0]x0 + [0], [e#](x0) = [0 0]x0 + [1], [d#](x0) = [0 0]x0 + [1], [b#](x0) = [0 0]x0 + [1], [c#](x0) = [0 0]x0 + [0], [a#](x0) = [1 0]x0 + [3], [0 -&] [1] [g](x0) = [1 1 ]x0 + [3], [0 0] [-&] [f](x0) = [0 0]x0 + [1 ], [0 0] [1] [e](x0) = [0 0]x0 + [1], [0 0] [2] [d](x0) = [1 1]x0 + [3], [0 0] [2] [c](x0) = [1 0]x0 + [3], [1 0] [3] [a](x0) = [1 0]x0 + [3], [0 0] [0] [b](x0) = [0 0]x0 + [1] orientation: a#(b(x1)) = [1 1]x1 + [3] >= [0 0]x1 + [1] = c#(b(x1)) c#(c(x1)) = [1 0]x1 + [3] >= [0 0]x1 + [1] = b#(x1) c#(c(x1)) = [1 0]x1 + [3] >= [0 0]x1 + [1] = d#(b(x1)) d#(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1] = e#(x1) d#(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1] = c#(e(x1)) b#(b(x1)) = [0 0]x1 + [1] >= [0 0]x1 + [0] = f#(x1) c#(b(x1)) = [0 0]x1 + [1] >= [0 0]x1 + [1] = g#(x1) e#(x1) = [0 0]x1 + [1] >= [0 0]x1 + [0] = f#(x1) e#(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1] = b#(x1) e#(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1] = b#(b(x1)) f#(g(x1)) = [1 1]x1 + [3] >= [0 0]x1 + [0] = c#(x1) f#(g(x1)) = [1 1]x1 + [3] >= [1 1]x1 + [3] = a#(c(x1)) g#(f(x1)) = [0 0]x1 + [1] >= [0 0]x1 + [1] = e#(x1) a#(x1) = [1 0]x1 + [3] >= [0 0]x1 + [0] = c#(x1) a#(x1) = [1 0]x1 + [3] >= [1 0]x1 + [3] = b#(c(x1)) [1 1] [3] [0 0] [2] a(b(x1)) = [1 1]x1 + [3] >= [1 1]x1 + [3] = c(b(x1)) [1 0] [3] [0 0] [2] c(c(x1)) = [1 1]x1 + [3] >= [1 1]x1 + [3] = d(b(x1)) [0 0] [2] [0 0] [2] d(x1) = [1 1]x1 + [3] >= [1 1]x1 + [3] = c(e(x1)) [0 0] [1] [0 0] [-&] b(b(x1)) = [0 0]x1 + [1] >= [0 0]x1 + [1 ] = f(x1) [0 0] [2] [0 -&] [1] c(b(x1)) = [1 1]x1 + [3] >= [1 1 ]x1 + [3] = g(x1) [0 0] [1] [0 0] [-&] e(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1 ] = f(x1) [0 0] [1] [0 0] [1] e(x1) = [0 0]x1 + [1] >= [0 0]x1 + [1] = b(b(x1)) [1 1] [3] [1 1] [3] f(g(x1)) = [1 1]x1 + [3] >= [1 1]x1 + [3] = a(c(x1)) [0 0] [1] [0 0] [1] g(f(x1)) = [1 1]x1 + [3] >= [0 0]x1 + [1] = e(x1) [1 0] [3] [1 0] [3] a(x1) = [1 0]x1 + [3] >= [1 0]x1 + [3] = b(c(x1)) problem: DPs: c#(c(x1)) -> b#(x1) c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) EDG Processor: DPs: c#(c(x1)) -> b#(x1) c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: g#(f(x1)) -> e#(x1) -> e#(x1) -> f#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> c#(x1) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> b#(c(x1)) e#(x1) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) e#(x1) -> b#(b(x1)) -> b#(b(x1)) -> f#(x1) e#(x1) -> b#(x1) -> b#(b(x1)) -> f#(x1) d#(x1) -> e#(x1) -> e#(x1) -> f#(x1) d#(x1) -> e#(x1) -> e#(x1) -> b#(x1) d#(x1) -> e#(x1) -> e#(x1) -> b#(b(x1)) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> b#(x1) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> d#(b(x1)) d#(x1) -> c#(e(x1)) -> c#(b(x1)) -> g#(x1) b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> e#(x1) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> c#(e(x1)) c#(c(x1)) -> b#(x1) -> b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) -> g#(f(x1)) -> e#(x1) a#(x1) -> b#(c(x1)) -> b#(b(x1)) -> f#(x1) a#(x1) -> c#(x1) -> c#(c(x1)) -> b#(x1) a#(x1) -> c#(x1) -> c#(c(x1)) -> d#(b(x1)) a#(x1) -> c#(x1) -> c#(b(x1)) -> g#(x1) Arctic Interpretation Processor: dimension: 2 interpretation: [g#](x0) = [2 2]x0 + [2], [f#](x0) = [0 0]x0, [e#](x0) = [0 2]x0 + [0], [d#](x0) = [2 2]x0 + [2], [b#](x0) = [0 0]x0 + [0], [c#](x0) = [0 2]x0, [a#](x0) = [0 2]x0 + [0], [2 2] [2] [g](x0) = [0 0]x0 + [0], [0 -&] [0] [f](x0) = [0 0 ]x0 + [0], [0 -&] [0] [e](x0) = [0 0 ]x0 + [0], [2 2] [2] [d](x0) = [0 0]x0 + [0], [0 2] [-&] [c](x0) = [0 0]x0 + [0 ], [0 2] [0] [a](x0) = [0 2]x0 + [2], [0 -&] [0] [b](x0) = [0 0 ]x0 + [0] orientation: c#(c(x1)) = [2 2]x1 + [2] >= [0 0]x1 + [0] = b#(x1) c#(c(x1)) = [2 2]x1 + [2] >= [2 2]x1 + [2] = d#(b(x1)) d#(x1) = [2 2]x1 + [2] >= [0 2]x1 + [0] = e#(x1) d#(x1) = [2 2]x1 + [2] >= [2 2]x1 + [2] = c#(e(x1)) b#(b(x1)) = [0 0]x1 + [0] >= [0 0]x1 = f#(x1) c#(b(x1)) = [2 2]x1 + [2] >= [2 2]x1 + [2] = g#(x1) e#(x1) = [0 2]x1 + [0] >= [0 0]x1 = f#(x1) e#(x1) = [0 2]x1 + [0] >= [0 0]x1 + [0] = b#(x1) e#(x1) = [0 2]x1 + [0] >= [0 0]x1 + [0] = b#(b(x1)) f#(g(x1)) = [2 2]x1 + [2] >= [2 2]x1 + [2] = a#(c(x1)) g#(f(x1)) = [2 2]x1 + [2] >= [0 2]x1 + [0] = e#(x1) a#(x1) = [0 2]x1 + [0] >= [0 2]x1 = c#(x1) a#(x1) = [0 2]x1 + [0] >= [0 2]x1 + [0] = b#(c(x1)) [2 2] [2] [2 2] [2] a(b(x1)) = [2 2]x1 + [2] >= [0 0]x1 + [0] = c(b(x1)) [2 2] [2] [2 2] [2] c(c(x1)) = [0 2]x1 + [0] >= [0 0]x1 + [0] = d(b(x1)) [2 2] [2] [2 2] [2] d(x1) = [0 0]x1 + [0] >= [0 0]x1 + [0] = c(e(x1)) [0 -&] [0] [0 -&] [0] b(b(x1)) = [0 0 ]x1 + [0] >= [0 0 ]x1 + [0] = f(x1) [2 2] [2] [2 2] [2] c(b(x1)) = [0 0]x1 + [0] >= [0 0]x1 + [0] = g(x1) [0 -&] [0] [0 -&] [0] e(x1) = [0 0 ]x1 + [0] >= [0 0 ]x1 + [0] = f(x1) [0 -&] [0] [0 -&] [0] e(x1) = [0 0 ]x1 + [0] >= [0 0 ]x1 + [0] = b(b(x1)) [2 2] [2] [2 2] [2] f(g(x1)) = [2 2]x1 + [2] >= [2 2]x1 + [2] = a(c(x1)) [2 2] [2] [0 -&] [0] g(f(x1)) = [0 0]x1 + [0] >= [0 0 ]x1 + [0] = e(x1) [0 2] [0] [0 2] [0] a(x1) = [0 2]x1 + [2] >= [0 2]x1 + [0] = b(c(x1)) problem: DPs: c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) EDG Processor: DPs: c#(c(x1)) -> d#(b(x1)) d#(x1) -> e#(x1) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) c#(b(x1)) -> g#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(b(x1)) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> f#(x1) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> b#(c(x1)) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> c#(x1) e#(x1) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) e#(x1) -> b#(b(x1)) -> b#(b(x1)) -> f#(x1) e#(x1) -> b#(x1) -> b#(b(x1)) -> f#(x1) d#(x1) -> e#(x1) -> e#(x1) -> b#(b(x1)) d#(x1) -> e#(x1) -> e#(x1) -> b#(x1) d#(x1) -> e#(x1) -> e#(x1) -> f#(x1) d#(x1) -> c#(e(x1)) -> c#(b(x1)) -> g#(x1) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> d#(b(x1)) b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> c#(e(x1)) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> e#(x1) c#(b(x1)) -> g#(x1) -> g#(f(x1)) -> e#(x1) a#(x1) -> b#(c(x1)) -> b#(b(x1)) -> f#(x1) a#(x1) -> c#(x1) -> c#(b(x1)) -> g#(x1) a#(x1) -> c#(x1) -> c#(c(x1)) -> d#(b(x1)) Arctic Interpretation Processor: dimension: 2 interpretation: [g#](x0) = [0 0]x0, [f#](x0) = [0 0]x0, [e#](x0) = [0 0]x0, [d#](x0) = [1 1]x0, [b#](x0) = [0 0]x0, [c#](x0) = [0 1]x0, [a#](x0) = [0 1]x0 + [0], [1 1 ] [0 ] [g](x0) = [0 -&]x0 + [-&], [0 0] [f](x0) = [0 0]x0, [0 0] [e](x0) = [0 0]x0, [1 1] [0 ] [d](x0) = [0 0]x0 + [-&], [0 1] [0 ] [c](x0) = [0 0]x0 + [-&], [0 1] [0] [a](x0) = [0 1]x0 + [0], [0 0] [b](x0) = [0 0]x0 orientation: c#(c(x1)) = [1 1]x1 + [0] >= [1 1]x1 = d#(b(x1)) d#(x1) = [1 1]x1 >= [0 0]x1 = e#(x1) d#(x1) = [1 1]x1 >= [1 1]x1 = c#(e(x1)) b#(b(x1)) = [0 0]x1 >= [0 0]x1 = f#(x1) c#(b(x1)) = [1 1]x1 >= [0 0]x1 = g#(x1) e#(x1) = [0 0]x1 >= [0 0]x1 = f#(x1) e#(x1) = [0 0]x1 >= [0 0]x1 = b#(x1) e#(x1) = [0 0]x1 >= [0 0]x1 = b#(b(x1)) f#(g(x1)) = [1 1]x1 + [0] >= [1 1]x1 + [0] = a#(c(x1)) g#(f(x1)) = [0 0]x1 >= [0 0]x1 = e#(x1) a#(x1) = [0 1]x1 + [0] >= [0 1]x1 = c#(x1) a#(x1) = [0 1]x1 + [0] >= [0 1]x1 + [0] = b#(c(x1)) [1 1] [0] [1 1] [0 ] a(b(x1)) = [1 1]x1 + [0] >= [0 0]x1 + [-&] = c(b(x1)) [1 1] [0] [1 1] [0 ] c(c(x1)) = [0 1]x1 + [0] >= [0 0]x1 + [-&] = d(b(x1)) [1 1] [0 ] [1 1] [0 ] d(x1) = [0 0]x1 + [-&] >= [0 0]x1 + [-&] = c(e(x1)) [0 0] [0 0] b(b(x1)) = [0 0]x1 >= [0 0]x1 = f(x1) [1 1] [0 ] [1 1 ] [0 ] c(b(x1)) = [0 0]x1 + [-&] >= [0 -&]x1 + [-&] = g(x1) [0 0] [0 0] e(x1) = [0 0]x1 >= [0 0]x1 = f(x1) [0 0] [0 0] e(x1) = [0 0]x1 >= [0 0]x1 = b(b(x1)) [1 1] [0] [1 1] [0] f(g(x1)) = [1 1]x1 + [0] >= [1 1]x1 + [0] = a(c(x1)) [1 1] [0 ] [0 0] g(f(x1)) = [0 0]x1 + [-&] >= [0 0]x1 = e(x1) [0 1] [0] [0 1] [0] a(x1) = [0 1]x1 + [0] >= [0 1]x1 + [0] = b(c(x1)) problem: DPs: c#(c(x1)) -> d#(b(x1)) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) EDG Processor: DPs: c#(c(x1)) -> d#(b(x1)) d#(x1) -> c#(e(x1)) b#(b(x1)) -> f#(x1) e#(x1) -> f#(x1) e#(x1) -> b#(x1) e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) g#(f(x1)) -> e#(x1) a#(x1) -> c#(x1) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: g#(f(x1)) -> e#(x1) -> e#(x1) -> f#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(x1) g#(f(x1)) -> e#(x1) -> e#(x1) -> b#(b(x1)) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> c#(x1) f#(g(x1)) -> a#(c(x1)) -> a#(x1) -> b#(c(x1)) e#(x1) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) e#(x1) -> b#(b(x1)) -> b#(b(x1)) -> f#(x1) e#(x1) -> b#(x1) -> b#(b(x1)) -> f#(x1) d#(x1) -> c#(e(x1)) -> c#(c(x1)) -> d#(b(x1)) b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) c#(c(x1)) -> d#(b(x1)) -> d#(x1) -> c#(e(x1)) a#(x1) -> b#(c(x1)) -> b#(b(x1)) -> f#(x1) a#(x1) -> c#(x1) -> c#(c(x1)) -> d#(b(x1)) SCC Processor: #sccs: 2 #rules: 5 #arcs: 13/100 DPs: b#(b(x1)) -> f#(x1) f#(g(x1)) -> a#(c(x1)) a#(x1) -> b#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) Arctic Interpretation Processor: dimension: 3 interpretation: [f#](x0) = [1 0 -&]x0, [b#](x0) = [-& -& 0 ]x0 + [0], [a#](x0) = [0 1 0]x0 + [1], [1 0 0 ] [1 ] [g](x0) = [-& 0 -&]x0 + [1 ] [0 -& 0 ] [-&], [0 -& -&] [-&] [f](x0) = [1 0 -&]x0 + [-&] [1 -& 0 ] [1 ], [0 0 -&] [0] [e](x0) = [1 0 -&]x0 + [1] [1 -& 0 ] [1], [1 0 0 ] [1] [d](x0) = [1 1 0 ]x0 + [1] [1 0 -&] [1], [0 0 0 ] [0] [c](x0) = [1 -& 0 ]x0 + [1] [-& 0 -&] [0], [0 0 0] [1] [a](x0) = [0 1 0]x0 + [1] [1 1 1] [1], [0 -& -&] [-&] [b](x0) = [0 -& 0 ]x0 + [0 ] [1 0 -&] [1 ] orientation: b#(b(x1)) = [1 0 -&]x1 + [1] >= [1 0 -&]x1 = f#(x1) f#(g(x1)) = [2 1 1]x1 + [2] >= [2 0 1]x1 + [2] = a#(c(x1)) a#(x1) = [0 1 0]x1 + [1] >= [-& 0 -&]x1 + [0] = b#(c(x1)) [1 0 0] [1] [1 0 0 ] [1] a(b(x1)) = [1 0 1]x1 + [1] >= [1 0 -&]x1 + [1] = c(b(x1)) [2 1 1] [2] [0 -& 0 ] [0] [1 0 0 ] [1] [1 0 0 ] [1] c(c(x1)) = [1 1 1 ]x1 + [1] >= [1 0 1 ]x1 + [1] = d(b(x1)) [1 -& 0 ] [1] [1 -& 0 ] [1] [1 0 0 ] [1] [1 0 0 ] [1] d(x1) = [1 1 0 ]x1 + [1] >= [1 1 0 ]x1 + [1] = c(e(x1)) [1 0 -&] [1] [1 0 -&] [1] [0 -& -&] [-&] [0 -& -&] [-&] b(b(x1)) = [1 0 -&]x1 + [1 ] >= [1 0 -&]x1 + [-&] = f(x1) [1 -& 0 ] [1 ] [1 -& 0 ] [1 ] [1 0 0 ] [1] [1 0 0 ] [1 ] c(b(x1)) = [1 0 -&]x1 + [1] >= [-& 0 -&]x1 + [1 ] = g(x1) [0 -& 0 ] [0] [0 -& 0 ] [-&] [0 0 -&] [0] [0 -& -&] [-&] e(x1) = [1 0 -&]x1 + [1] >= [1 0 -&]x1 + [-&] = f(x1) [1 -& 0 ] [1] [1 -& 0 ] [1 ] [0 0 -&] [0] [0 -& -&] [-&] e(x1) = [1 0 -&]x1 + [1] >= [1 0 -&]x1 + [1 ] = b(b(x1)) [1 -& 0 ] [1] [1 -& 0 ] [1 ] [1 0 0] [1] [1 0 0] [1] f(g(x1)) = [2 1 1]x1 + [2] >= [2 0 1]x1 + [2] = a(c(x1)) [2 1 1] [2] [2 1 1] [2] [1 0 0 ] [1] [0 0 -&] [0] g(f(x1)) = [1 0 -&]x1 + [1] >= [1 0 -&]x1 + [1] = e(x1) [1 -& 0 ] [1] [1 -& 0 ] [1] [0 0 0] [1] [0 0 0] [0] a(x1) = [0 1 0]x1 + [1] >= [0 0 0]x1 + [0] = b(c(x1)) [1 1 1] [1] [1 1 1] [1] problem: DPs: b#(b(x1)) -> f#(x1) f#(g(x1)) -> a#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) EDG Processor: DPs: b#(b(x1)) -> f#(x1) f#(g(x1)) -> a#(c(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: b#(b(x1)) -> f#(x1) -> f#(g(x1)) -> a#(c(x1)) SCC Processor: #sccs: 0 #rules: 0 #arcs: 1/4 DPs: c#(c(x1)) -> d#(b(x1)) d#(x1) -> c#(e(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) Arctic Interpretation Processor: dimension: 3 interpretation: [d#](x0) = [0 0 0]x0 + [0], [c#](x0) = [0 0 0]x0 + [0], [-& 1 -&] [0 ] [g](x0) = [-& 1 1 ]x0 + [1 ] [-& 0 0 ] [-&], [-& 0 0 ] [0 ] [f](x0) = [-& 0 0 ]x0 + [-&] [-& 0 0 ] [0 ], [-& 0 0 ] [0] [e](x0) = [-& 0 0 ]x0 + [0] [-& 0 0 ] [0], [0 1 1] [1] [d](x0) = [1 1 1]x0 + [1] [0 0 0] [0], [0 1 1 ] [1 ] [c](x0) = [-& 0 1 ]x0 + [-&] [-& 0 0 ] [0 ], [-& 0 1 ] [0] [a](x0) = [-& 0 1 ]x0 + [0] [-& 0 1 ] [0], [-& 0 0 ] [0 ] [b](x0) = [-& 0 0 ]x0 + [-&] [-& 0 0 ] [0 ] orientation: c#(c(x1)) = [0 1 1]x1 + [1] >= [-& 0 0 ]x1 + [0] = d#(b(x1)) d#(x1) = [0 0 0]x1 + [0] >= [-& 0 0 ]x1 + [0] = c#(e(x1)) [-& 1 1 ] [1] [-& 1 1 ] [1] a(b(x1)) = [-& 1 1 ]x1 + [1] >= [-& 1 1 ]x1 + [1] = c(b(x1)) [-& 1 1 ] [1] [-& 0 0 ] [0] [0 1 2 ] [1] [-& 1 1 ] [1] c(c(x1)) = [-& 1 1 ]x1 + [1] >= [-& 1 1 ]x1 + [1] = d(b(x1)) [-& 0 1 ] [0] [-& 0 0 ] [0] [0 1 1] [1] [-& 1 1 ] [1] d(x1) = [1 1 1]x1 + [1] >= [-& 1 1 ]x1 + [1] = c(e(x1)) [0 0 0] [0] [-& 0 0 ] [0] [-& 0 0 ] [0] [-& 0 0 ] [0 ] b(b(x1)) = [-& 0 0 ]x1 + [0] >= [-& 0 0 ]x1 + [-&] = f(x1) [-& 0 0 ] [0] [-& 0 0 ] [0 ] [-& 1 1 ] [1] [-& 1 -&] [0 ] c(b(x1)) = [-& 1 1 ]x1 + [1] >= [-& 1 1 ]x1 + [1 ] = g(x1) [-& 0 0 ] [0] [-& 0 0 ] [-&] [-& 0 0 ] [0] [-& 0 0 ] [0 ] e(x1) = [-& 0 0 ]x1 + [0] >= [-& 0 0 ]x1 + [-&] = f(x1) [-& 0 0 ] [0] [-& 0 0 ] [0 ] [-& 0 0 ] [0] [-& 0 0 ] [0] e(x1) = [-& 0 0 ]x1 + [0] >= [-& 0 0 ]x1 + [0] = b(b(x1)) [-& 0 0 ] [0] [-& 0 0 ] [0] [-& 1 1 ] [1] [-& 1 1 ] [1] f(g(x1)) = [-& 1 1 ]x1 + [1] >= [-& 1 1 ]x1 + [1] = a(c(x1)) [-& 1 1 ] [1] [-& 1 1 ] [1] [-& 1 1 ] [0] [-& 0 0 ] [0] g(f(x1)) = [-& 1 1 ]x1 + [1] >= [-& 0 0 ]x1 + [0] = e(x1) [-& 0 0 ] [0] [-& 0 0 ] [0] [-& 0 1 ] [0] [-& 0 1 ] [0] a(x1) = [-& 0 1 ]x1 + [0] >= [-& 0 1 ]x1 + [0] = b(c(x1)) [-& 0 1 ] [0] [-& 0 1 ] [0] problem: DPs: d#(x1) -> c#(e(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) EDG Processor: DPs: d#(x1) -> c#(e(x1)) TRS: a(b(x1)) -> c(b(x1)) c(c(x1)) -> d(b(x1)) d(x1) -> c(e(x1)) b(b(x1)) -> f(x1) c(b(x1)) -> g(x1) e(x1) -> f(x1) e(x1) -> b(b(x1)) f(g(x1)) -> a(c(x1)) g(f(x1)) -> e(x1) a(x1) -> b(c(x1)) graph: Qed