YES We show the termination of the TRS R: |app'|(|app'|(minus(),x),|0|()) -> x |app'|(|app'|(minus(),|app'|(s(),x)),|app'|(s(),y)) -> |app'|(|app'|(minus(),x),y) |app'|(|app'|(minus(),|app'|(|app'|(minus(),x),y)),z) -> |app'|(|app'|(minus(),x),|app'|(|app'|(plus(),y),z)) |app'|(|app'|(quot(),|0|()),|app'|(s(),y)) -> |0|() |app'|(|app'|(quot(),|app'|(s(),x)),|app'|(s(),y)) -> |app'|(s(),|app'|(|app'|(quot(),|app'|(|app'|(minus(),x),y)),|app'|(s(),y))) |app'|(|app'|(plus(),|0|()),y) -> y |app'|(|app'|(plus(),|app'|(s(),x)),y) -> |app'|(s(),|app'|(|app'|(plus(),x),y)) |app'|(|app'|(app(),nil()),k) -> k |app'|(|app'|(app(),l),nil()) -> l |app'|(|app'|(app(),|app'|(|app'|(cons(),x),l)),k) -> |app'|(|app'|(cons(),x),|app'|(|app'|(app(),l),k)) |app'|(sum(),|app'|(|app'|(cons(),x),nil())) -> |app'|(|app'|(cons(),x),nil()) |app'|(sum(),|app'|(|app'|(cons(),x),|app'|(|app'|(cons(),y),l))) -> |app'|(sum(),|app'|(|app'|(cons(),|app'|(|app'|(plus(),x),y)),l)) |app'|(sum(),|app'|(|app'|(app(),l),|app'|(|app'|(cons(),x),|app'|(|app'|(cons(),y),k)))) -> |app'|(sum(),|app'|(|app'|(app(),l),|app'|(sum(),|app'|(|app'|(cons(),x),|app'|(|app'|(cons(),y),k))))) |app'|(|app'|(map(),f),nil()) -> nil() |app'|(|app'|(map(),f),|app'|(|app'|(cons(),x),xs)) -> |app'|(|app'|(cons(),|app'|(f,x)),|app'|(|app'|(map(),f),xs)) |app'|(|app'|(filter(),f),nil()) -> nil() |app'|(|app'|(filter(),f),|app'|(|app'|(cons(),x),xs)) -> |app'|(|app'|(|app'|(|app'|(filter2(),|app'|(f,x)),f),x),xs) |app'|(|app'|(|app'|(|app'|(filter2(),true()),f),x),xs) -> |app'|(|app'|(cons(),x),|app'|(|app'|(filter(),f),xs)) |app'|(|app'|(|app'|(|app'|(filter2(),false()),f),x),xs) -> |app'|(|app'|(filter(),f),xs) Instead we prove termination of the uncurried system: |app'|(app_0(),y) -> app_1(y) |app'|(app_1(x1),y) -> app_2(x1,y) |app'|(cons_0(),y) -> cons_1(y) |app'|(cons_1(x1),y) -> cons_2(x1,y) |app'|(filter_0(),y) -> filter_1(y) |app'|(filter_1(x1),y) -> filter_2(x1,y) |app'|(filter2_0(),y) -> filter2_1(y) |app'|(filter2_1(x1),y) -> filter2_2(x1,y) |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) |app'|(map_0(),y) -> map_1(y) |app'|(map_1(x1),y) -> map_2(x1,y) |app'|(minus_0(),y) -> minus_1(y) |app'|(minus_1(x1),y) -> minus_2(x1,y) |app'|(plus_0(),y) -> plus_1(y) |app'|(plus_1(x1),y) -> plus_2(x1,y) |app'|(quot_0(),y) -> quot_1(y) |app'|(quot_1(x1),y) -> quot_2(x1,y) |app'|(s_0(),y) -> s_1(y) |app'|(sum_0(),y) -> sum_1(y) minus_2(x,|0|_0()) -> x minus_2(s_1(x),s_1(y)) -> minus_2(x,y) minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) quot_2(|0|_0(),s_1(y)) -> |0|_0() quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) plus_2(|0|_0(),y) -> y plus_2(s_1(x),y) -> s_1(plus_2(x,y)) app_2(nil_0(),k) -> k app_2(l,nil_0()) -> l app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) map_2(f,nil_0()) -> nil_0() map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) filter_2(f,nil_0()) -> nil_0() filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: |app'|#(app_1(x1),y) -> app_2#(x1,y) p2: |app'|#(filter_1(x1),y) -> filter_2#(x1,y) p3: |app'|#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p4: |app'|#(map_1(x1),y) -> map_2#(x1,y) p5: |app'|#(minus_1(x1),y) -> minus_2#(x1,y) p6: |app'|#(plus_1(x1),y) -> plus_2#(x1,y) p7: |app'|#(quot_1(x1),y) -> quot_2#(x1,y) p8: |app'|#(sum_0(),y) -> sum_1#(y) p9: minus_2#(s_1(x),s_1(y)) -> minus_2#(x,y) p10: minus_2#(minus_2(x,y),z) -> minus_2#(x,plus_2(y,z)) p11: minus_2#(minus_2(x,y),z) -> plus_2#(y,z) p12: quot_2#(s_1(x),s_1(y)) -> quot_2#(minus_2(x,y),s_1(y)) p13: quot_2#(s_1(x),s_1(y)) -> minus_2#(x,y) p14: plus_2#(s_1(x),y) -> plus_2#(x,y) p15: app_2#(cons_2(x,l),k) -> app_2#(l,k) p16: sum_1#(cons_2(x,cons_2(y,l))) -> sum_1#(cons_2(plus_2(x,y),l)) p17: sum_1#(cons_2(x,cons_2(y,l))) -> plus_2#(x,y) p18: sum_1#(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1#(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) p19: sum_1#(app_2(l,cons_2(x,cons_2(y,k)))) -> app_2#(l,sum_1(cons_2(x,cons_2(y,k)))) p20: sum_1#(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1#(cons_2(x,cons_2(y,k))) p21: map_2#(f,cons_2(x,xs)) -> |app'|#(f,x) p22: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p23: filter_2#(f,cons_2(x,xs)) -> filter2_4#(|app'|(f,x),f,x,xs) p24: filter_2#(f,cons_2(x,xs)) -> |app'|#(f,x) p25: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) p26: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p2, p3, p4, p21, p22, p23, p24, p25, p26} {p18} {p15} {p12} {p9, p10} {p16} {p14} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: map_2#(f,cons_2(x,xs)) -> |app'|#(f,x) p2: |app'|#(map_1(x1),y) -> map_2#(x1,y) p3: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p4: |app'|#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p5: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) p6: filter_2#(f,cons_2(x,xs)) -> |app'|#(f,x) p7: |app'|#(filter_1(x1),y) -> filter_2#(x1,y) p8: filter_2#(f,cons_2(x,xs)) -> filter2_4#(|app'|(f,x),f,x,xs) p9: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: map_2#_A(x1,x2) = max{9, x2 - 39} cons_2_A(x1,x2) = max{x1 + 49, x2 + 49} |app'|#_A(x1,x2) = max{9, x2 + 2} map_1_A(x1) = max{4, x1 + 1} filter2_3_A(x1,x2,x3) = max{8, x1 + 2, x2 - 5, x3 - 5} filter2_4#_A(x1,x2,x3,x4) = max{9, x4 + 2} false_0_A = 52 filter_2#_A(x1,x2) = max{7, x2 + 1} filter_1_A(x1) = 0 |app'|_A(x1,x2) = x2 + 5 true_0_A = 6 filter_2_A(x1,x2) = 51 nil_0_A = 50 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: map_2#_A(x1,x2) = x1 + x2 cons_2_A(x1,x2) = x1 + x2 + 20 |app'|#_A(x1,x2) = x1 + x2 map_1_A(x1) = x1 + 3 filter2_3_A(x1,x2,x3) = x1 + x2 + x3 + 7 filter2_4#_A(x1,x2,x3,x4) = x2 + x4 + 3 false_0_A() = 1 filter_2#_A(x1,x2) = x1 + x2 + 3 filter_1_A(x1) = x1 + 3 |app'|_A(x1,x2) = x1 + x2 + 1 true_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 10 nil_0_A() = 42 map_2#!_A(x1,x2) = x2 + 2 cons_2!_A(x1,x2) = x1 + x2 + 5 |app'|#!_A(x1,x2) = x2 + 22 map_1!_A(x1) = 1 filter2_3!_A(x1,x2,x3) = 15 filter2_4#!_A(x1,x2,x3,x4) = x4 + 4 false_0!_A() = 18 filter_2#!_A(x1,x2) = x2 + 3 filter_1!_A(x1) = 0 |app'|!_A(x1,x2) = x2 + 18 true_0!_A() = 18 filter_2!_A(x1,x2) = 17 nil_0!_A() = 0 partial status: pi(map_2#) = [] pi(cons_2) = [2] pi(|app'|#) = [] pi(map_1) = [1] pi(filter2_3) = [1] pi(filter2_4#) = [] pi(false_0) = [] pi(filter_2#) = [2] pi(filter_1) = [] pi(|app'|) = [] pi(true_0) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p1, p2, p3, p4, p5, p6, p7, p8, p9 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: sum_1#(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1#(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r20, r25, r26, r27, r28, r29, r30, r31, r32, r33 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: sum_1#_A(x1) = max{18, x1} app_2_A(x1,x2) = max{x1 + 28, x2 + 20} cons_2_A(x1,x2) = max{x1 + 9, x2} sum_1_A(x1) = max{8, x1} |app'|_A(x1,x2) = max{18, x1 + 2, x2 + 14} sum_0_A = 1 quot_2_A(x1,x2) = max{13, x1 - 15, x2 - 30} s_1_A(x1) = 0 minus_2_A(x1,x2) = x1 plus_2_A(x1,x2) = max{x1 - 16, x2} |0|_0_A = 0 nil_0_A = 17 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: sum_1#_A(x1) = 0 app_2_A(x1,x2) = x1 + x2 cons_2_A(x1,x2) = x2 + 8 sum_1_A(x1) = 14 |app'|_A(x1,x2) = x1 + 1 sum_0_A() = 13 quot_2_A(x1,x2) = x2 + 5 s_1_A(x1) = 7 minus_2_A(x1,x2) = x2 + 5 plus_2_A(x1,x2) = x1 + x2 + 5 |0|_0_A() = 13 nil_0_A() = 6 sum_1#!_A(x1) = x1 app_2!_A(x1,x2) = x1 + x2 + 18 cons_2!_A(x1,x2) = x2 + 17 sum_1!_A(x1) = 24 |app'|!_A(x1,x2) = x2 + 13 sum_0!_A() = 0 quot_2!_A(x1,x2) = x1 + 3 s_1!_A(x1) = 9 minus_2!_A(x1,x2) = 11 plus_2!_A(x1,x2) = 26 |0|_0!_A() = 0 nil_0!_A() = 15 partial status: pi(sum_1#) = [1] pi(app_2) = [2] pi(cons_2) = [] pi(sum_1) = [] pi(|app'|) = [1] pi(sum_0) = [] pi(quot_2) = [] pi(s_1) = [] pi(minus_2) = [1] pi(plus_2) = [2] pi(|0|_0) = [] pi(nil_0) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: app_2#(cons_2(x,l),k) -> app_2#(l,k) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: app_2#_A(x1,x2) = max{50, x2 - 1} cons_2_A(x1,x2) = max{49, x1 - 106, x2 - 20} filter_2_A(x1,x2) = max{43, x1 + 21, x2 + 21} nil_0_A = 69 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: app_2#_A(x1,x2) = x1 cons_2_A(x1,x2) = x1 + x2 + 5 filter_2_A(x1,x2) = x1 + x2 + 10 nil_0_A() = 15 app_2#!_A(x1,x2) = x1 + 12 cons_2!_A(x1,x2) = x1 + x2 + 11 filter_2!_A(x1,x2) = x1 + 18 nil_0!_A() = 36 partial status: pi(app_2#) = [] pi(cons_2) = [] pi(filter_2) = [1, 2] pi(nil_0) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: quot_2#(s_1(x),s_1(y)) -> quot_2#(minus_2(x,y),s_1(y)) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r21, r22, r23, r26, r27, r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: quot_2#_A(x1,x2) = x2 + 22 s_1_A(x1) = max{20, x1} minus_2_A(x1,x2) = max{109, x1 + 9} |0|_0_A = 19 plus_2_A(x1,x2) = x2 + 20 filter_2_A(x1,x2) = max{61, x1 + 16, x2 + 20} nil_0_A = 17 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: quot_2#_A(x1,x2) = x1 s_1_A(x1) = x1 + 6 minus_2_A(x1,x2) = x1 + 5 |0|_0_A() = 6 plus_2_A(x1,x2) = x1 + x2 + 5 filter_2_A(x1,x2) = x2 + 10 nil_0_A() = 6 quot_2#!_A(x1,x2) = x1 + 11 s_1!_A(x1) = 15 minus_2!_A(x1,x2) = x2 + 16 |0|_0!_A() = 9 plus_2!_A(x1,x2) = x1 + 27 filter_2!_A(x1,x2) = x1 + x2 + 2 nil_0!_A() = 10 partial status: pi(quot_2#) = [] pi(s_1) = [] pi(minus_2) = [1] pi(|0|_0) = [] pi(plus_2) = [2] pi(filter_2) = [1, 2] pi(nil_0) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: minus_2#(s_1(x),s_1(y)) -> minus_2#(x,y) p2: minus_2#(minus_2(x,y),z) -> minus_2#(x,plus_2(y,z)) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r26, r27, r29, r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: minus_2#_A(x1,x2) = 1 s_1_A(x1) = max{9, x1 - 30} minus_2_A(x1,x2) = max{2, x1 - 30} plus_2_A(x1,x2) = x2 + 10 |0|_0_A = 8 app_2_A(x1,x2) = max{x1 + 29, x2 - 4} nil_0_A = 0 filter_2_A(x1,x2) = max{57, x2 - 3} base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: minus_2#_A(x1,x2) = x1 + x2 s_1_A(x1) = x1 + 3 minus_2_A(x1,x2) = x1 + x2 + 11 plus_2_A(x1,x2) = x1 + x2 + 11 |0|_0_A() = 1 app_2_A(x1,x2) = x1 + 9 nil_0_A() = 11 filter_2_A(x1,x2) = x2 + 10 minus_2#!_A(x1,x2) = x1 + 19 s_1!_A(x1) = x1 + 19 minus_2!_A(x1,x2) = x1 + x2 + 18 plus_2!_A(x1,x2) = 29 |0|_0!_A() = 18 app_2!_A(x1,x2) = x1 + 15 nil_0!_A() = 0 filter_2!_A(x1,x2) = x2 + 2 partial status: pi(minus_2#) = [] pi(s_1) = [] pi(minus_2) = [] pi(plus_2) = [] pi(|0|_0) = [] pi(app_2) = [1] pi(nil_0) = [] pi(filter_2) = [] The following rules are removed: p1, p2 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: sum_1#(cons_2(x,cons_2(y,l))) -> sum_1#(cons_2(plus_2(x,y),l)) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r25, r26, r27, r28, r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: sum_1#_A(x1) = max{40, x1 + 12} cons_2_A(x1,x2) = max{27, x1 - 30, x2 + 19} plus_2_A(x1,x2) = max{75, x1 - 35, x2 + 6} quot_2_A(x1,x2) = max{31, x1 + 3, x2 - 1} s_1_A(x1) = 34 minus_2_A(x1,x2) = 30 |0|_0_A = 32 app_2_A(x1,x2) = max{x1 + 70, x2 + 23} nil_0_A = 1 filter_2_A(x1,x2) = 2 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: sum_1#_A(x1) = x1 cons_2_A(x1,x2) = x1 + x2 + 10 plus_2_A(x1,x2) = x1 + x2 + 5 quot_2_A(x1,x2) = x2 + 5 s_1_A(x1) = 7 minus_2_A(x1,x2) = x2 + 6 |0|_0_A() = 13 app_2_A(x1,x2) = x2 + 5 nil_0_A() = 8 filter_2_A(x1,x2) = x1 + x2 sum_1#!_A(x1) = 24 cons_2!_A(x1,x2) = x1 + 23 plus_2!_A(x1,x2) = 32 quot_2!_A(x1,x2) = 22 s_1!_A(x1) = 23 minus_2!_A(x1,x2) = x1 + x2 + 25 |0|_0!_A() = 24 app_2!_A(x1,x2) = x1 + x2 + 2 nil_0!_A() = 20 filter_2!_A(x1,x2) = 25 partial status: pi(sum_1#) = [1] pi(cons_2) = [2] pi(plus_2) = [] pi(quot_2) = [1] pi(s_1) = [] pi(minus_2) = [] pi(|0|_0) = [] pi(app_2) = [] pi(nil_0) = [] pi(filter_2) = [] The following rules are removed: p1 Then no dependency pair remains. -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: plus_2#(s_1(x),y) -> plus_2#(x,y) and R consists of: r1: |app'|(app_0(),y) -> app_1(y) r2: |app'|(app_1(x1),y) -> app_2(x1,y) r3: |app'|(cons_0(),y) -> cons_1(y) r4: |app'|(cons_1(x1),y) -> cons_2(x1,y) r5: |app'|(filter_0(),y) -> filter_1(y) r6: |app'|(filter_1(x1),y) -> filter_2(x1,y) r7: |app'|(filter2_0(),y) -> filter2_1(y) r8: |app'|(filter2_1(x1),y) -> filter2_2(x1,y) r9: |app'|(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r10: |app'|(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r11: |app'|(map_0(),y) -> map_1(y) r12: |app'|(map_1(x1),y) -> map_2(x1,y) r13: |app'|(minus_0(),y) -> minus_1(y) r14: |app'|(minus_1(x1),y) -> minus_2(x1,y) r15: |app'|(plus_0(),y) -> plus_1(y) r16: |app'|(plus_1(x1),y) -> plus_2(x1,y) r17: |app'|(quot_0(),y) -> quot_1(y) r18: |app'|(quot_1(x1),y) -> quot_2(x1,y) r19: |app'|(s_0(),y) -> s_1(y) r20: |app'|(sum_0(),y) -> sum_1(y) r21: minus_2(x,|0|_0()) -> x r22: minus_2(s_1(x),s_1(y)) -> minus_2(x,y) r23: minus_2(minus_2(x,y),z) -> minus_2(x,plus_2(y,z)) r24: quot_2(|0|_0(),s_1(y)) -> |0|_0() r25: quot_2(s_1(x),s_1(y)) -> s_1(quot_2(minus_2(x,y),s_1(y))) r26: plus_2(|0|_0(),y) -> y r27: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r28: app_2(nil_0(),k) -> k r29: app_2(l,nil_0()) -> l r30: app_2(cons_2(x,l),k) -> cons_2(x,app_2(l,k)) r31: sum_1(cons_2(x,nil_0())) -> cons_2(x,nil_0()) r32: sum_1(cons_2(x,cons_2(y,l))) -> sum_1(cons_2(plus_2(x,y),l)) r33: sum_1(app_2(l,cons_2(x,cons_2(y,k)))) -> sum_1(app_2(l,sum_1(cons_2(x,cons_2(y,k))))) r34: map_2(f,nil_0()) -> nil_0() r35: map_2(f,cons_2(x,xs)) -> cons_2(|app'|(f,x),map_2(f,xs)) r36: filter_2(f,nil_0()) -> nil_0() r37: filter_2(f,cons_2(x,xs)) -> filter2_4(|app'|(f,x),f,x,xs) r38: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r39: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r30, r31, r36 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: plus_2#_A(x1,x2) = max{14, x1 - 34} s_1_A(x1) = x1 + 33 app_2_A(x1,x2) = max{26, x1 - 12, x2 + 9} cons_2_A(x1,x2) = 10 sum_1_A(x1) = max{18, x1} nil_0_A = 11 filter_2_A(x1,x2) = max{22, x1 + 21, x2 - 12} base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: plus_2#_A(x1,x2) = x1 s_1_A(x1) = x1 + 3 app_2_A(x1,x2) = x1 + 5 cons_2_A(x1,x2) = x1 + 10 sum_1_A(x1) = x1 + 3 nil_0_A() = 6 filter_2_A(x1,x2) = x2 + 10 plus_2#!_A(x1,x2) = x1 s_1!_A(x1) = 23 app_2!_A(x1,x2) = x1 + x2 + 1 cons_2!_A(x1,x2) = 12 sum_1!_A(x1) = 12 nil_0!_A() = 13 filter_2!_A(x1,x2) = x2 + 25 partial status: pi(plus_2#) = [] pi(s_1) = [] pi(app_2) = [2] pi(cons_2) = [] pi(sum_1) = [] pi(nil_0) = [] pi(filter_2) = [] The following rules are removed: p1 Then no dependency pair remains.