Input TRS: 1: active(f(g(X),Y)) -> mark(f(X,f(g(X),Y))) 2: mark(f(X1,X2)) -> active(f(mark(X1),X2)) 3: mark(g(X)) -> active(g(mark(X))) 4: f(mark(X1),X2) -> f(X1,X2) 5: f(X1,mark(X2)) -> f(X1,X2) 6: f(active(X1),X2) -> f(X1,X2) 7: f(X1,active(X2)) -> f(X1,X2) 8: g(mark(X)) -> g(X) 9: g(active(X)) -> g(X) Number of strict rules: 9 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #mark(f(X1,X2)) -> #active(f(mark(X1),X2)) #2: #mark(f(X1,X2)) -> #f(mark(X1),X2) #3: #mark(f(X1,X2)) -> #mark(X1) #4: #f(active(X1),X2) -> #f(X1,X2) #5: #g(active(X)) -> #g(X) #6: #f(X1,active(X2)) -> #f(X1,X2) #7: #f(X1,mark(X2)) -> #f(X1,X2) #8: #mark(g(X)) -> #active(g(mark(X))) #9: #mark(g(X)) -> #g(mark(X)) #10: #mark(g(X)) -> #mark(X) #11: #active(f(g(X),Y)) -> #mark(f(X,f(g(X),Y))) #12: #active(f(g(X),Y)) -> #f(X,f(g(X),Y)) #13: #g(mark(X)) -> #g(X) #14: #f(mark(X1),X2) -> #f(X1,X2) Number of SCCs: 3, DPs: 10, edges: 29 SCC { #5 #13 } Removing DPs: Order(PosReal,>,Sum)... succeeded. f(x1,x2) weight: 0 #mark(x1) weight: 0 mark(x1) weight: (/ 1 2) + x1 #f(x1,x2) weight: 0 #g(x1) weight: x1 active(x1) weight: (/ 1 2) + x1 #active(x1) weight: 0 g(x1) weight: 0 Usable rules: { } Removed DPs: #5 #13 Number of SCCs: 2, DPs: 8, edges: 25 SCC { #4 #6 #7 #14 } Removing DPs: Order(PosReal,>,Sum)... succeeded. f(x1,x2) weight: 0 #mark(x1) weight: 0 mark(x1) weight: (/ 1 2) + x1 #f(x1,x2) weight: x1 #g(x1) weight: 0 active(x1) weight: (/ 1 2) + x1 #active(x1) weight: 0 g(x1) weight: 0 Usable rules: { } Removed DPs: #4 #14 Number of SCCs: 2, DPs: 6, edges: 13 SCC { #6 #7 } Removing DPs: Order(PosReal,>,Sum)... succeeded. f(x1,x2) weight: 0 #mark(x1) weight: 0 mark(x1) weight: (/ 1 2) + x1 #f(x1,x2) weight: x2 #g(x1) weight: 0 active(x1) weight: (/ 1 2) + x1 #active(x1) weight: 0 g(x1) weight: 0 Usable rules: { } Removed DPs: #6 #7 Number of SCCs: 1, DPs: 4, edges: 9 SCC { #1 #3 #10 #11 } Removing DPs: Order(PosReal,>,Sum)... succeeded. f(x1,x2) weight: (/ 1 8) + x1 #mark(x1) weight: (/ 1 4) + x1 mark(x1) weight: (/ 1 8) + x1 #f(x1,x2) weight: 0 #g(x1) weight: 0 active(x1) weight: x1 #active(x1) weight: x1 g(x1) weight: (/ 3 8) + x1 Usable rules: { 1..9 } Removed DPs: #1 #3 #10 #11 Number of SCCs: 1, DPs: 0, edges: 0 YES