Input TRS: 1: active(zeros()) -> mark(cons(0(),zeros())) 2: active(tail(cons(X,XS))) -> mark(XS) 3: active(cons(X1,X2)) -> cons(active(X1),X2) 4: active(tail(X)) -> tail(active(X)) 5: cons(mark(X1),X2) -> mark(cons(X1,X2)) 6: tail(mark(X)) -> mark(tail(X)) 7: proper(zeros()) -> ok(zeros()) 8: proper(cons(X1,X2)) -> cons(proper(X1),proper(X2)) 9: proper(0()) -> ok(0()) 10: proper(tail(X)) -> tail(proper(X)) 11: cons(ok(X1),ok(X2)) -> ok(cons(X1,X2)) 12: tail(ok(X)) -> ok(tail(X)) 13: top(mark(X)) -> top(proper(X)) 14: top(ok(X)) -> top(active(X)) Number of strict rules: 14 Direct Order(PosReal,>,Poly) ... removes: 2 top(x1) weight: 2 * x1 zeros() weight: 0 tail(x1) weight: 18458 + x1 proper(x1) weight: x1 ok(x1) weight: x1 0() weight: 0 mark(x1) weight: x1 active(x1) weight: x1 cons(x1,x2) weight: x1 + x2 Number of strict rules: 13 Direct Order(PosReal,>,Poly) ... failed. Freezing ... failed. Dependency Pairs: #1: #tail(mark(X)) -> #tail(X) #2: #top(mark(X)) -> #top(proper(X)) #3: #top(mark(X)) -> #proper(X) #4: #cons(ok(X1),ok(X2)) -> #cons(X1,X2) #5: #tail(ok(X)) -> #tail(X) #6: #top(ok(X)) -> #top(active(X)) #7: #top(ok(X)) -> #active(X) #8: #proper(tail(X)) -> #tail(proper(X)) #9: #proper(tail(X)) -> #proper(X) #10: #cons(mark(X1),X2) -> #cons(X1,X2) #11: #active(cons(X1,X2)) -> #cons(active(X1),X2) #12: #active(cons(X1,X2)) -> #active(X1) #13: #active(zeros()) -> #cons(0(),zeros()) #14: #proper(cons(X1,X2)) -> #cons(proper(X1),proper(X2)) #15: #proper(cons(X1,X2)) -> #proper(X1) #16: #proper(cons(X1,X2)) -> #proper(X2) #17: #active(tail(X)) -> #tail(active(X)) #18: #active(tail(X)) -> #active(X) Number of SCCs: 5, DPs: 11, edges: 25 SCC { #1 #5 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: 0 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: 0 proper(x1) weight: 0 ok(x1) weight: (/ 1 2) + x1 0() weight: 0 #tail(x1) weight: x1 mark(x1) weight: (/ 1 2) + x1 #proper(x1) weight: 0 active(x1) weight: 0 cons(x1,x2) weight: 0 #active(x1) weight: 0 Usable rules: { } Removed DPs: #1 #5 Number of SCCs: 4, DPs: 9, edges: 21 SCC { #12 #18 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: 0 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: (/ 1 2) + x1 proper(x1) weight: 0 ok(x1) weight: (/ 1 2) 0() weight: 0 #tail(x1) weight: 0 mark(x1) weight: (/ 1 2) #proper(x1) weight: 0 active(x1) weight: 0 cons(x1,x2) weight: (/ 1 2) + x1 #active(x1) weight: x1 Usable rules: { } Removed DPs: #12 #18 Number of SCCs: 3, DPs: 7, edges: 17 SCC { #2 #6 } Removing DPs: Order(PosReal,>,Sum)... Order(PosReal,>,Max)... succeeded. #cons(x1,x2) weight: 0 top(x1) weight: 0 #top(x1) weight: x1 zeros() weight: (/ 1 2) tail(x1) weight: (/ 1 8) + x1 proper(x1) weight: (/ 1 4) + x1 ok(x1) weight: (/ 1 4) + x1 0() weight: (/ 1 8) #tail(x1) weight: 0 mark(x1) weight: (/ 3 8) + x1 #proper(x1) weight: 0 active(x1) weight: (/ 1 8) + x1 cons(x1,x2) weight: max{0, (/ 1 8) + x1} #active(x1) weight: 0 Usable rules: { 1 3..12 } Removed DPs: #2 #6 Number of SCCs: 2, DPs: 5, edges: 13 SCC { #4 #10 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: x2 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: (/ 1 4) + x1 proper(x1) weight: (/ 1 4) ok(x1) weight: (/ 1 2) + x1 0() weight: 0 #tail(x1) weight: 0 mark(x1) weight: (/ 3 4) #proper(x1) weight: 0 active(x1) weight: (/ 1 4) + x1 cons(x1,x2) weight: (/ 1 2) #active(x1) weight: 0 Usable rules: { } Removed DPs: #4 Number of SCCs: 2, DPs: 4, edges: 10 SCC { #10 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: x1 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: (/ 1 4) + x1 proper(x1) weight: (/ 1 4) ok(x1) weight: (/ 1 2) + x1 0() weight: 0 #tail(x1) weight: 0 mark(x1) weight: (/ 1 2) + x1 #proper(x1) weight: 0 active(x1) weight: (/ 1 4) + x1 cons(x1,x2) weight: 0 #active(x1) weight: 0 Usable rules: { } Removed DPs: #10 Number of SCCs: 1, DPs: 3, edges: 9 SCC { #9 #15 #16 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: 0 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: (/ 1 2) + x1 proper(x1) weight: 0 ok(x1) weight: 0 0() weight: 0 #tail(x1) weight: 0 mark(x1) weight: (/ 1 2) + x1 #proper(x1) weight: x1 active(x1) weight: (/ 1 2) + x1 cons(x1,x2) weight: x1 + x2 #active(x1) weight: 0 Usable rules: { } Removed DPs: #9 Number of SCCs: 2, DPs: 2, edges: 4 SCC { #15 #16 } Removing DPs: Order(PosReal,>,Sum)... succeeded. #cons(x1,x2) weight: 0 top(x1) weight: 0 #top(x1) weight: 0 zeros() weight: 0 tail(x1) weight: (/ 1 4) + x1 proper(x1) weight: 0 ok(x1) weight: 0 0() weight: 0 #tail(x1) weight: 0 mark(x1) weight: (/ 1 4) + x1 #proper(x1) weight: x1 active(x1) weight: (/ 1 2) + x1 cons(x1,x2) weight: (/ 1 4) + x1 + x2 #active(x1) weight: 0 Usable rules: { } Removed DPs: #15 #16 Number of SCCs: 1, DPs: 0, edges: 0 YES