Problem: f(h(x),y) -> h(f(y,f(x,h(f(a(),a()))))) Proof: Unfolding Processor: loop length: 6 terms: f(h(h(x964)),h(h(x1300))) h(f(h(h(x1300)),f(h(x964),h(f(a(),a()))))) h(h(f(f(h(x964),h(f(a(),a()))),f(h(x1300),h(f(a(),a())))))) h(h(f(h(f(h(f(a(),a())),f(x964,h(f(a(),a()))))),f(h(x1300),h(f(a(),a())))))) h(h(f(h(h(f(f(x964,h(f(a(),a()))),f(f(a(),a()),h(f(a(),a())))))),f(h(x1300),h(f(a(),a())))))) h(h(f(h(h(f(f(x964,h(f(a(),a()))),f(f(a(),a()),h(f(a(),a())))))),h ( f ( h(f(a(),a())), f (x1300,h(f(a(),a())))))))) context: h(h([])) substitution: x964 -> f(f(x964,h(f(a(),a()))),f(f(a(),a()),h(f(a(),a())))) x1300 -> f(f(x1300,h(f(a(),a()))),f(f(a(),a()),h(f(a(),a())))) Qed