Input TRS: 1: active(f(a(),X,X)) -> mark(f(X,b(),b())) 2: active(b()) -> mark(a()) 3: mark(f(X1,X2,X3)) -> active(f(X1,mark(X2),X3)) 4: mark(a()) -> active(a()) 5: mark(b()) -> active(b()) 6: f(mark(X1),X2,X3) -> f(X1,X2,X3) 7: f(X1,mark(X2),X3) -> f(X1,X2,X3) 8: f(X1,X2,mark(X3)) -> f(X1,X2,X3) 9: f(active(X1),X2,X3) -> f(X1,X2,X3) 10: f(X1,active(X2),X3) -> f(X1,X2,X3) 11: f(X1,X2,active(X3)) -> f(X1,X2,X3) Number of strict rules: 11 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #active(b()) -> #mark(a()) #2: #f(mark(X1),X2,X3) -> #f(X1,X2,X3) #3: #f(active(X1),X2,X3) -> #f(X1,X2,X3) #4: #f(X1,X2,active(X3)) -> #f(X1,X2,X3) #5: #f(X1,mark(X2),X3) -> #f(X1,X2,X3) #6: #f(X1,active(X2),X3) -> #f(X1,X2,X3) #7: #mark(b()) -> #active(b()) #8: #mark(f(X1,X2,X3)) -> #active(f(X1,mark(X2),X3)) #9: #mark(f(X1,X2,X3)) -> #f(X1,mark(X2),X3) #10: #mark(f(X1,X2,X3)) -> #mark(X2) #11: #active(f(a(),X,X)) -> #mark(f(X,b(),b())) #12: #active(f(a(),X,X)) -> #f(X,b(),b()) #13: #f(X1,X2,mark(X3)) -> #f(X1,X2,X3) #14: #mark(a()) -> #active(a()) Number of SCCs: 2, DPs: 9, edges: 41 SCC { #8 #10 #11 } Removing DPs: Order(PosReal,>,Sum)... succeeded. a() weight: 0 b() weight: 0 f(x1,x2,x3) weight: (/ 1 2) + x1 + x2 + x3 #mark(x1) weight: x1 mark(x1) weight: x1 #f(x1,x2,x3) weight: 0 active(x1) weight: x1 #active(x1) weight: x1 Usable rules: { 1..11 } Removed DPs: #10 Number of SCCs: 2, DPs: 8, edges: 38 SCC { #8 #11 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... succeeded. a() weight: (/ 7 16) b() weight: 0 f(x1,x2,x3) weight: max{0, (/ 3 8) + x3, (/ 1 8) + x1} #mark(x1) weight: (/ 3 16) + x1 mark(x1) weight: (/ 1 16) + x1 #f(x1,x2,x3) weight: 0 active(x1) weight: (/ 1 8) + x1 #active(x1) weight: x1 Usable rules: { 6..11 } Removed DPs: #8 Number of SCCs: 1, DPs: 6, edges: 36 SCC { #2..6 #13 } Removing DPs: Order(PosReal,>,Sum)... succeeded. a() weight: 0 b() weight: 0 f(x1,x2,x3) weight: (/ 1 4) #mark(x1) weight: 0 mark(x1) weight: (/ 1 4) + x1 #f(x1,x2,x3) weight: x1 + x2 + x3 active(x1) weight: (/ 1 2) + x1 #active(x1) weight: 0 Usable rules: { } Removed DPs: #2..6 #13 Number of SCCs: 1, DPs: 0, edges: 0 YES