YES We show the termination of the TRS R: app(rev(),nil()) -> nil() app(rev(),app(app(cons(),x),l)) -> app(app(cons(),app(app(rev1(),x),l)),app(app(rev2(),x),l)) app(app(rev1(),|0|()),nil()) -> |0|() app(app(rev1(),app(s(),x)),nil()) -> app(s(),x) app(app(rev1(),x),app(app(cons(),y),l)) -> app(app(rev1(),y),l) app(app(rev2(),x),nil()) -> nil() app(app(rev2(),x),app(app(cons(),y),l)) -> app(rev(),app(app(cons(),x),app(app(rev2(),y),l))) 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(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(rev_0(),y) -> rev_1(y) app(rev1_0(),y) -> rev1_1(y) app(rev1_1(x1),y) -> rev1_2(x1,y) app(rev2_0(),y) -> rev2_1(y) app(rev2_1(x1),y) -> rev2_2(x1,y) app(s_0(),y) -> s_1(y) rev_1(nil_0()) -> nil_0() rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) rev1_2(|0|_0(),nil_0()) -> |0|_0() rev1_2(s_1(x),nil_0()) -> s_1(x) rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) rev2_2(x,nil_0()) -> nil_0() rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) 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#(filter_1(x1),y) -> filter_2#(x1,y) p2: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p3: app#(map_1(x1),y) -> map_2#(x1,y) p4: app#(rev_0(),y) -> rev_1#(y) p5: app#(rev1_1(x1),y) -> rev1_2#(x1,y) p6: app#(rev2_1(x1),y) -> rev2_2#(x1,y) p7: rev_1#(cons_2(x,l)) -> rev1_2#(x,l) p8: rev_1#(cons_2(x,l)) -> rev2_2#(x,l) p9: rev1_2#(x,cons_2(y,l)) -> rev1_2#(y,l) p10: rev2_2#(x,cons_2(y,l)) -> rev_1#(cons_2(x,rev2_2(y,l))) p11: rev2_2#(x,cons_2(y,l)) -> rev2_2#(y,l) p12: map_2#(f,cons_2(x,xs)) -> app#(f,x) p13: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p14: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p15: filter_2#(f,cons_2(x,xs)) -> app#(f,x) p16: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) p17: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p1, p2, p3, p12, p13, p14, p15, p16, p17} {p8, p10, p11} {p9} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: app#(filter_1(x1),y) -> filter_2#(x1,y) p2: filter_2#(f,cons_2(x,xs)) -> app#(f,x) p3: app#(map_1(x1),y) -> map_2#(x1,y) p4: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p5: map_2#(f,cons_2(x,xs)) -> app#(f,x) p6: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p7: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) 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(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r2, r5, r12, r14, r16, r17, r19, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: app#_A(x1,x2) = max{5, x1 - 7} filter_1_A(x1) = max{13, x1 + 4} filter_2#_A(x1,x2) = max{5, x1 - 7} cons_2_A(x1,x2) = max{4, x1 - 41, x2 - 41} map_1_A(x1) = x1 + 14 map_2#_A(x1,x2) = max{6, x1 - 1} filter2_3_A(x1,x2,x3) = max{18, x1 - 1, x2 + 6, x3 - 1} filter2_4#_A(x1,x2,x3,x4) = max{5, x2 - 7} false_0_A = 1 app_A(x1,x2) = max{16, x1 - 19, x2 - 19} true_0_A = 3 cons_0_A = 1 cons_1_A(x1) = max{2, x1 - 20} filter2_0_A = 18 filter2_1_A(x1) = max{15, x1 - 20} rev1_0_A = 1 rev1_1_A(x1) = max{2, x1 - 74} rev2_0_A = 2 rev2_1_A(x1) = max{3, x1 - 20} s_0_A = 5 s_1_A(x1) = max{6, x1 - 20} rev_1_A(x1) = max{15, x1 - 52} nil_0_A = 5 rev1_2_A(x1,x2) = max{3, x1 - 94, x2 - 94} |0|_0_A = 0 filter_2_A(x1,x2) = max{14, x1 - 41, x2 - 29} base order 2: precedence: cons_1 = filter2_1 > app = cons_0 = filter2_0 > map_1 = filter_2 > map_2# = false_0 = rev_1 = nil_0 > filter_1 = filter_2# = filter2_3 = filter2_4# = rev2_1 = s_1 > app# = rev2_0 = s_0 > cons_2 > true_0 = rev1_2 > rev1_1 = |0|_0 > rev1_0 partial status: pi(app#) = [] pi(filter_1) = [1] pi(filter_2#) = [] pi(cons_2) = [] pi(map_1) = [1] pi(map_2#) = [] pi(filter2_3) = [2] pi(filter2_4#) = [] pi(false_0) = [] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter_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: map_2#(f,cons_2(x,xs)) -> app#(f,x) p5: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p6: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) p7: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p8: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p1, p2, p3, p4, p5, p6, p7, p8} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: filter_2#(f,cons_2(x,xs)) -> app#(f,x) p2: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p3: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) p4: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p5: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) p6: app#(map_1(x1),y) -> map_2#(x1,y) p7: map_2#(f,cons_2(x,xs)) -> app#(f,x) p8: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r6, r7, r9, r12, r14, r16, r17, r19, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: filter_2#_A(x1,x2) = max{3, x2 + 1} cons_2_A(x1,x2) = max{26, x1 + 6, x2 + 6} app#_A(x1,x2) = x2 + 6 filter2_3_A(x1,x2,x3) = max{4, x1 - 27, x2 - 27, x3 - 27} filter2_4#_A(x1,x2,x3,x4) = max{5, x4 + 2} true_0_A = 25 app_A(x1,x2) = max{25, x1 - 10, x2 + 17} false_0_A = 18 map_1_A(x1) = max{9, x1 - 27} map_2#_A(x1,x2) = x2 + 5 cons_0_A = 9 cons_1_A(x1) = x1 + 16 filter_0_A = 1 filter_1_A(x1) = max{9, x1 - 1} filter2_0_A = 1 filter2_1_A(x1) = max{2, x1 - 1} filter2_2_A(x1,x2) = max{3, x1 - 11, x2 - 16} map_0_A = 1 rev1_0_A = 1 rev1_1_A(x1) = max{9, x1 - 24} rev2_0_A = 8 rev2_1_A(x1) = max{9, x1 - 20} s_0_A = 1 s_1_A(x1) = max{22, x1 - 1} rev_1_A(x1) = max{18, x1 - 34} nil_0_A = 7 rev1_2_A(x1,x2) = max{21, x1 - 23, x2 - 27} |0|_0_A = 0 filter_2_A(x1,x2) = max{8, x1 - 44} base order 2: precedence: app = filter_0 > filter_1 > cons_2 = filter2_3 = map_1 = s_1 = rev_1 = rev1_2 = filter_2 > true_0 = false_0 = map_2# = cons_1 = filter2_2 = map_0 = rev1_1 = s_0 > filter_2# = cons_0 = filter2_1 = rev1_0 = rev2_1 = nil_0 > app# = filter2_0 = rev2_0 = |0|_0 > filter2_4# partial status: pi(filter_2#) = [2] pi(cons_2) = [2] pi(app#) = [2] pi(filter2_3) = [] pi(filter2_4#) = [] pi(true_0) = [] pi(app) = [] pi(false_0) = [] pi(map_1) = [] pi(map_2#) = [2] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(map_0) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter_2#(f,cons_2(x,xs)) -> app#(f,x) p2: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) p3: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p4: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) p5: app#(map_1(x1),y) -> map_2#(x1,y) p6: map_2#(f,cons_2(x,xs)) -> app#(f,x) p7: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p2, p3, p4} {p5, p6, p7} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(false_0(),f,x,xs) -> filter_2#(f,xs) p2: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p3: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r2, r3, r5, r6, r7, r9, r13, r14, r16, r17, r19, r20, r21, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: filter2_4#_A(x1,x2,x3,x4) = max{x3 + 3, x4 + 3} false_0_A = 4 filter_2#_A(x1,x2) = max{2, x2 + 1} cons_2_A(x1,x2) = max{x1 + 24, x2 + 4} app_A(x1,x2) = max{8, x1 - 30, x2 + 5} true_0_A = 15 cons_1_A(x1) = x1 + 55 filter_0_A = 7 filter_1_A(x1) = max{8, x1 - 6} filter2_0_A = 29 filter2_1_A(x1) = max{7, x1 - 1} filter2_2_A(x1,x2) = max{6, x1 - 32, x2 - 1} filter2_3_A(x1,x2,x3) = max{7, x1 - 63, x2 - 32, x3 - 1} map_0_A = 6 map_1_A(x1) = max{7, x1 - 6} rev1_1_A(x1) = x1 + 30 rev1_2_A(x1,x2) = max{8, x1, x2 - 23} rev2_0_A = 1 rev2_1_A(x1) = max{0, x1 - 1} s_0_A = 7 s_1_A(x1) = max{8, x1 - 1} rev_1_A(x1) = max{8, x1} nil_0_A = 3 |0|_0_A = 0 filter_2_A(x1,x2) = max{16, x1 - 5, x2 - 18} base order 2: precedence: cons_2 > filter_2 > false_0 > filter_2# = app > filter2_4# = rev2_1 = rev_1 > filter_0 = filter2_3 = rev1_2 = s_1 > true_0 = cons_1 = filter_1 = filter2_2 = map_1 = rev1_1 = rev2_0 = s_0 = nil_0 > filter2_1 = map_0 = |0|_0 > filter2_0 partial status: pi(filter2_4#) = [] pi(false_0) = [] pi(filter_2#) = [2] pi(cons_2) = [2] pi(app) = [] pi(true_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_1) = [] pi(rev1_2) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p2: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p1, p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p2: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r6, r7, r9, r12, r14, r16, r19, r20 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: filter_2#_A(x1,x2) = max{4, x2 - 2} cons_2_A(x1,x2) = max{37, x1 + 10, x2 + 4} filter2_4#_A(x1,x2,x3,x4) = max{x3 + 7, x4 - 1} app_A(x1,x2) = max{26, x2 + 5} true_0_A = 3 cons_0_A = 0 cons_1_A(x1) = x1 filter_0_A = 0 filter_1_A(x1) = max{26, x1} filter2_0_A = 1 filter2_1_A(x1) = max{10, x1} filter2_2_A(x1,x2) = max{11, x2} filter2_3_A(x1,x2,x3) = max{12, x3} map_0_A = 1 map_1_A(x1) = max{6, x1} rev1_0_A = 1 rev1_1_A(x1) = max{26, x1} rev2_0_A = 1 rev2_1_A(x1) = max{6, x1} s_0_A = 1 s_1_A(x1) = max{25, x1 - 13} rev1_2_A(x1,x2) = max{x1 + 12, x2 - 38} |0|_0_A = 12 nil_0_A = 24 base order 2: precedence: filter2_4# = nil_0 > filter_2# = filter_0 = map_0 = rev1_0 = rev1_2 > app = |0|_0 > filter_1 = filter2_3 = rev1_1 = s_1 > cons_2 = filter2_2 = map_1 = s_0 > true_0 = cons_1 = filter2_1 > cons_0 = filter2_0 = rev2_1 > rev2_0 partial status: pi(filter_2#) = [] pi(cons_2) = [2] pi(filter2_4#) = [] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev1_2) = [1] pi(|0|_0) = [] pi(nil_0) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: (no SCCs) -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: app#(map_1(x1),y) -> map_2#(x1,y) p2: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p3: map_2#(f,cons_2(x,xs)) -> app#(f,x) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r2, r3, r5, r6, r7, r12, r14, r16, r17, r19, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: app#_A(x1,x2) = max{4, x1 - 3} map_1_A(x1) = x1 + 8 map_2#_A(x1,x2) = max{5, x1 - 2} cons_2_A(x1,x2) = max{6, x1 - 51, x2 - 53} app_A(x1,x2) = max{14, x1 - 11, x2 - 7} cons_0_A = 10 cons_1_A(x1) = max{1, x1 - 8} filter_0_A = 1 filter_1_A(x1) = max{2, x1 - 7} filter2_0_A = 8 filter2_1_A(x1) = max{9, x1 - 8} filter2_2_A(x1,x2) = max{10, x1 - 20, x2 - 8} filter2_3_A(x1,x2,x3) = max{12, x1 - 31, x2 - 20, x3 - 7} rev1_0_A = 1 rev1_1_A(x1) = max{2, x1 - 100} rev2_0_A = 9 rev2_1_A(x1) = max{10, x1 - 8} s_0_A = 10 s_1_A(x1) = max{14, x1 - 8} rev_1_A(x1) = max{13, x1 - 60} nil_0_A = 1 rev1_2_A(x1,x2) = max{5, x1 - 112, x2 - 114} |0|_0_A = 0 filter_2_A(x1,x2) = max{12, x1 - 55, x2 - 43} base order 2: precedence: nil_0 = filter_2 > app > filter_1 = filter2_3 = s_1 > app# = map_1 = filter_0 = filter2_2 = s_0 > map_2# = filter2_1 > cons_2 = filter2_0 = rev_1 > cons_1 = rev2_1 = rev1_2 > cons_0 = rev1_1 = rev2_0 = |0|_0 > rev1_0 partial status: pi(app#) = [] pi(map_1) = [1] pi(map_2#) = [] pi(cons_2) = [] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p3 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: app#(map_1(x1),y) -> map_2#(x1,y) p2: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r6, r7, r9, r12, r14, r16, r17, r19, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: map_2#_A(x1,x2) = x2 + 31 cons_2_A(x1,x2) = max{x1 - 29, x2 + 32} app_A(x1,x2) = max{x1 - 11, x2 + 28} cons_0_A = 10 cons_1_A(x1) = max{28, x1 - 18} filter_0_A = 22 filter_1_A(x1) = max{10, x1 - 1} filter2_0_A = 8 filter2_1_A(x1) = max{9, x1 - 1} filter2_2_A(x1,x2) = max{10, x1 - 13, x2 - 1} filter2_3_A(x1,x2,x3) = max{28, x1 - 25, x2 - 12, x3 - 29} map_0_A = 9 map_1_A(x1) = max{10, x1 - 42} rev1_0_A = 9 rev1_1_A(x1) = max{10, x1 - 73} rev2_0_A = 8 rev2_1_A(x1) = max{9, x1 - 73} s_0_A = 12 s_1_A(x1) = max{13, x1 - 1} rev_1_A(x1) = max{10, x1 - 55} nil_0_A = 9 rev1_2_A(x1,x2) = max{7, x1 - 85, x2 - 56} |0|_0_A = 0 filter_2_A(x1,x2) = max{27, x2 - 50} base order 2: precedence: s_1 > rev1_2 > app = filter2_0 = filter2_3 = rev2_0 = s_0 = filter_2 > cons_2 = cons_1 = filter_1 = filter2_2 = rev1_1 > map_2# = cons_0 = filter_0 = filter2_1 = map_1 = rev1_0 = nil_0 > map_0 = |0|_0 > rev2_1 = rev_1 partial status: pi(map_2#) = [2] pi(cons_2) = [] pi(app) = [2] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_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: rev2_2#(x,cons_2(y,l)) -> rev_1#(cons_2(x,rev2_2(y,l))) p2: rev_1#(cons_2(x,l)) -> rev2_2#(x,l) p3: rev2_2#(x,cons_2(y,l)) -> rev2_2#(y,l) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r2, r3, r5, r6, r7, r9, r12, r14, r16, r17, r18, r19, r20, r21, r22, r23, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: rev2_2#_A(x1,x2) = max{9, x2 + 4} cons_2_A(x1,x2) = max{14, x2 + 11} rev_1#_A(x1) = max{10, x1 - 6} rev2_2_A(x1,x2) = max{3, x2} app_A(x1,x2) = max{45, x1 - 15, x2 + 31} cons_0_A = 1 cons_1_A(x1) = x1 + 30 filter_0_A = 14 filter_1_A(x1) = max{13, x1 - 49} filter2_0_A = 11 filter2_1_A(x1) = max{12, x1 - 1} filter2_2_A(x1,x2) = max{13, x1 - 17, x2 - 1} filter2_3_A(x1,x2,x3) = max{14, x1 - 33, x2 - 17, x3 - 1} map_0_A = 14 map_1_A(x1) = max{32, x1 - 16} rev1_0_A = 1 rev1_1_A(x1) = max{0, x1 - 1} rev2_0_A = 1 rev2_1_A(x1) = max{2, x1 - 1} s_0_A = 1 s_1_A(x1) = 0 rev_1_A(x1) = max{2, x1} nil_0_A = 0 rev1_2_A(x1,x2) = max{10, x2} |0|_0_A = 0 filter_2_A(x1,x2) = max{32, x1 - 65, x2 - 15} base order 2: precedence: s_1 = nil_0 > filter_2 > rev2_2# = app > cons_2 = filter_1 = filter2_3 = map_1 = rev2_0 = s_0 = rev_1 > rev_1# = rev2_2 = cons_1 = filter_0 = filter2_2 = map_0 = rev1_2 > cons_0 = filter2_1 = rev1_1 = rev2_1 = |0|_0 > filter2_0 = rev1_0 partial status: pi(rev2_2#) = [2] pi(cons_2) = [] pi(rev_1#) = [] pi(rev2_2) = [2] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [2] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: rev_1#(cons_2(x,l)) -> rev2_2#(x,l) p2: rev2_2#(x,cons_2(y,l)) -> rev2_2#(y,l) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p2} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: rev2_2#(x,cons_2(y,l)) -> rev2_2#(y,l) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r9, r12, r14, r16, r17, r19, r22, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: rev2_2#_A(x1,x2) = max{x1 + 8, x2 + 3} cons_2_A(x1,x2) = max{19, x1 + 8, x2 + 3} app_A(x1,x2) = max{23, x2 - 9} cons_0_A = 1 cons_1_A(x1) = max{2, x1 - 14} filter_0_A = 1 filter_1_A(x1) = max{22, x1 - 14} filter2_0_A = 1 filter2_1_A(x1) = max{2, x1 - 14} map_0_A = 1 map_1_A(x1) = max{2, x1 - 14} rev1_0_A = 1 rev1_1_A(x1) = max{2, x1 - 14} rev2_0_A = 1 rev2_1_A(x1) = max{2, x1 - 14} s_0_A = 1 s_1_A(x1) = max{16, x1 - 10} rev_1_A(x1) = max{17, x1 - 22} nil_0_A = 15 rev1_2_A(x1,x2) = max{16, x1 - 22, x2 - 30} |0|_0_A = 0 rev2_2_A(x1,x2) = max{18, x1 - 13, x2 - 21} filter_2_A(x1,x2) = max{21, x1 + 14, x2 - 18} base order 2: precedence: app = filter_2 > filter_1 = map_1 = s_1 = rev_1 > cons_2 = filter_0 = map_0 = s_0 > rev2_2# = cons_1 = rev1_2 = rev2_2 > cons_0 = rev1_1 = rev2_1 = nil_0 > filter2_1 = rev1_0 = rev2_0 = |0|_0 > filter2_0 partial status: pi(rev2_2#) = [2] pi(cons_2) = [2] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_0) = [] pi(rev2_2) = [] 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: rev1_2#(x,cons_2(y,l)) -> rev1_2#(y,l) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(filter_0(),y) -> filter_1(y) r4: app(filter_1(x1),y) -> filter_2(x1,y) r5: app(filter2_0(),y) -> filter2_1(y) r6: app(filter2_1(x1),y) -> filter2_2(x1,y) r7: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r8: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r9: app(map_0(),y) -> map_1(y) r10: app(map_1(x1),y) -> map_2(x1,y) r11: app(rev_0(),y) -> rev_1(y) r12: app(rev1_0(),y) -> rev1_1(y) r13: app(rev1_1(x1),y) -> rev1_2(x1,y) r14: app(rev2_0(),y) -> rev2_1(y) r15: app(rev2_1(x1),y) -> rev2_2(x1,y) r16: app(s_0(),y) -> s_1(y) r17: rev_1(nil_0()) -> nil_0() r18: rev_1(cons_2(x,l)) -> cons_2(rev1_2(x,l),rev2_2(x,l)) r19: rev1_2(|0|_0(),nil_0()) -> |0|_0() r20: rev1_2(s_1(x),nil_0()) -> s_1(x) r21: rev1_2(x,cons_2(y,l)) -> rev1_2(y,l) r22: rev2_2(x,nil_0()) -> nil_0() r23: rev2_2(x,cons_2(y,l)) -> rev_1(cons_2(x,rev2_2(y,l))) r24: map_2(f,nil_0()) -> nil_0() r25: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r26: filter_2(f,nil_0()) -> nil_0() r27: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r28: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r29: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r9, r12, r14, r16, r17, r19, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: rev1_2#_A(x1,x2) = max{x1 + 6, x2 + 1} cons_2_A(x1,x2) = max{22, x1 + 7, x2 + 6} app_A(x1,x2) = max{12, x2 - 14} cons_0_A = 1 cons_1_A(x1) = max{2, x1 - 15} filter_0_A = 1 filter_1_A(x1) = max{2, x1 - 15} filter2_0_A = 2 filter2_1_A(x1) = max{1, x1 - 15} map_0_A = 1 map_1_A(x1) = max{2, x1 - 15} rev1_0_A = 1 rev1_1_A(x1) = max{2, x1 - 15} rev2_0_A = 1 rev2_1_A(x1) = max{12, x1 - 15} s_0_A = 1 s_1_A(x1) = max{11, x1 - 15} rev_1_A(x1) = max{23, x1} nil_0_A = 8 rev1_2_A(x1,x2) = max{10, x1 - 16, x2 - 23} |0|_0_A = 0 filter_2_A(x1,x2) = max{9, x1 - 14, x2 - 9} base order 2: precedence: rev_1 > cons_2 > rev1_2# = app = nil_0 = filter_2 > cons_1 = filter_1 = filter2_1 = map_1 = rev2_1 = s_1 > cons_0 = filter_0 = filter2_0 = map_0 = rev2_0 = s_0 = rev1_2 > rev1_1 = |0|_0 > rev1_0 partial status: pi(rev1_2#) = [2] pi(cons_2) = [2] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(map_0) = [] pi(map_1) = [] pi(rev1_0) = [] pi(rev1_1) = [] pi(rev2_0) = [] pi(rev2_1) = [] pi(s_0) = [] pi(s_1) = [] pi(rev_1) = [] pi(nil_0) = [] pi(rev1_2) = [] pi(|0|_0) = [] pi(filter_2) = [] The following rules are removed: p1 Then no dependency pair remains.