Input TRS: 1: app(f(),a()) -> app(f(),b()) 2: app(g(),b()) -> app(g(),a()) 3: app(app(map(),fun),nil()) -> nil() 4: app(app(map(),fun),app(app(cons(),x),xs)) -> app(app(cons(),app(fun,x)),app(app(map(),fun),xs)) 5: app(app(filter(),fun),nil()) -> nil() 6: app(app(filter(),fun),app(app(cons(),x),xs)) -> app(app(app(app(filter2(),app(fun,x)),fun),x),xs) 7: app(app(app(app(filter2(),true()),fun),x),xs) -> app(app(cons(),x),app(app(filter(),fun),xs)) 8: app(app(app(app(filter2(),false()),fun),x),xs) -> app(app(filter(),fun),xs) Number of strict rules: 8 Direct Order(PosReal,>,Poly) ... failed. Freezing app 1: app❆1_f(a()) -> app❆1_f(b()) 2: app❆1_g(b()) -> app❆1_g(a()) 3: app❆2_map(fun,nil()) -> nil() 4: app❆2_map(fun,app❆2_cons(x,xs)) -> app❆2_cons(app(fun,x),app❆2_map(fun,xs)) 5: app❆2_filter(fun,nil()) -> nil() 6: app❆2_filter(fun,app❆2_cons(x,xs)) -> app❆4_filter2(app(fun,x),fun,x,xs) 7: app❆4_filter2(true(),fun,x,xs) -> app❆2_cons(x,app❆2_filter(fun,xs)) 8: app❆4_filter2(false(),fun,x,xs) -> app❆2_filter(fun,xs) 9: app(cons(),_1) ->= app❆1_cons(_1) 10: app(app❆1_cons(_1),_2) ->= app❆2_cons(_1,_2) 11: app(filter(),_1) ->= app❆1_filter(_1) 12: app(app❆1_filter(_1),_2) ->= app❆2_filter(_1,_2) 13: app(map(),_1) ->= app❆1_map(_1) 14: app(app❆1_map(_1),_2) ->= app❆2_map(_1,_2) 15: app(g(),_1) ->= app❆1_g(_1) 16: app(f(),_1) ->= app❆1_f(_1) 17: app(filter2(),_1) ->= app❆1_filter2(_1) 18: app(app❆1_filter2(_1),_2) ->= app❆2_filter2(_1,_2) 19: app(app❆2_filter2(_1,_2),_3) ->= app❆3_filter2(_1,_2,_3) 20: app(app❆3_filter2(_1,_2,_3),_4) ->= app❆4_filter2(_1,_2,_3,_4) Number of strict rules: 8 Direct Order(PosReal,>,Poly) ... failed. Dependency Pairs: #1: #app❆1_g(b()) -> #app❆1_g(a()) #2: #app❆2_filter(fun,app❆2_cons(x,xs)) -> #app❆4_filter2(app(fun,x),fun,x,xs) #3: #app❆2_filter(fun,app❆2_cons(x,xs)) -> #app(fun,x) #4: #app(app❆1_filter(_1),_2) ->? #app❆2_filter(_1,_2) #5: #app(app❆1_map(_1),_2) ->? #app❆2_map(_1,_2) #6: #app(app❆3_filter2(_1,_2,_3),_4) ->? #app❆4_filter2(_1,_2,_3,_4) #7: #app❆4_filter2(true(),fun,x,xs) -> #app❆2_filter(fun,xs) #8: #app(f(),_1) ->? #app❆1_f(_1) #9: #app❆1_f(a()) -> #app❆1_f(b()) #10: #app❆4_filter2(false(),fun,x,xs) -> #app❆2_filter(fun,xs) #11: #app(g(),_1) ->? #app❆1_g(_1) #12: #app❆2_map(fun,app❆2_cons(x,xs)) -> #app(fun,x) #13: #app❆2_map(fun,app❆2_cons(x,xs)) -> #app❆2_map(fun,xs) Number of SCCs: 1, DPs: 8, edges: 15 SCC { #3..7 #10 #12 #13 } Removing DPs: Order(PosReal,>,Sum)... succeeded. a() weight: 0 #app❆2_map(x1,x2) weight: (/ 1 4) + x2 app❆1_map(x1) weight: (/ 1 4) b() weight: 0 app❆4_filter2(x1,x2,x3,x4) weight: 0 #app❆1_g(x1) weight: 0 app❆2_map(x1,x2) weight: 0 false() weight: 0 true() weight: 0 f() weight: 0 filter2() weight: 0 app❆2_filter(x1,x2) weight: 0 app❆1_f(x1) weight: 0 nil() weight: 0 app❆1_filter(x1) weight: (/ 1 4) #app(x1,x2) weight: (/ 1 2) + x2 map() weight: 0 #app❆4_filter2(x1,x2,x3,x4) weight: (/ 1 4) + x4 app❆2_filter2(x1,x2) weight: 0 #app❆2_filter(x1,x2) weight: x2 cons() weight: 0 app❆2_cons(x1,x2) weight: (/ 3 4) + x1 + x2 #app❆1_f(x1) weight: 0 filter() weight: 0 app❆1_g(x1) weight: 0 app❆1_filter2(x1) weight: 0 app❆1_cons(x1) weight: 0 app❆3_filter2(x1,x2,x3) weight: (/ 1 4) g() weight: 0 app(x1,x2) weight: 0 Usable rules: { } Removed DPs: #3..7 #10 #12 #13 Number of SCCs: 0, DPs: 0, edges: 0 YES