YES We show the termination of the TRS R: app(app(app(f(),|0|()),|1|()),x) -> app(app(app(f(),app(s(),x)),x),x) app(app(app(f(),x),y),app(s(),z)) -> app(s(),app(app(app(f(),|0|()),|1|()),z)) app(app(map(),|fun|),nil()) -> nil() app(app(map(),|fun|),app(app(cons(),x),xs)) -> app(app(cons(),app(|fun|,x)),app(app(map(),|fun|),xs)) app(app(filter(),|fun|),nil()) -> nil() app(app(filter(),|fun|),app(app(cons(),x),xs)) -> app(app(app(app(filter2(),app(|fun|,x)),|fun|),x),xs) app(app(app(app(filter2(),true()),|fun|),x),xs) -> app(app(cons(),x),app(app(filter(),|fun|),xs)) app(app(app(app(filter2(),false()),|fun|),x),xs) -> app(app(filter(),|fun|),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(f_0(),y) -> f_1(y) app(f_1(x1),y) -> f_2(x1,y) app(f_2(x1,x2),y) -> f_3(x1,x2,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(s_0(),y) -> s_1(y) f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) map_2(|fun|,nil_0()) -> nil_0() map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) filter_2(|fun|,nil_0()) -> nil_0() filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: app#(f_2(x1,x2),y) -> f_3#(x1,x2,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: f_3#(|0|_0(),|1|_0(),x) -> f_3#(s_1(x),x,x) p6: f_3#(x,y,s_1(z)) -> f_3#(|0|_0(),|1|_0(),z) p7: map_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p8: map_2#(|fun|,cons_2(x,xs)) -> map_2#(|fun|,xs) p9: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p10: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p11: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p12: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The estimated dependency graph contains the following SCCs: {p2, p3, p4, p7, p8, p9, p10, p11, p12} {p5, p6} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: map_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p2: app#(map_1(x1),y) -> map_2#(x1,y) p3: map_2#(|fun|,cons_2(x,xs)) -> map_2#(|fun|,xs) p4: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p5: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p6: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p7: app#(filter_1(x1),y) -> filter_2#(x1,y) p8: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p9: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The set of usable rules consists of r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19, r20, r21, r22 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: map_2#_A(x1,x2) = 3 cons_2_A(x1,x2) = max{7, x2 + 4} app#_A(x1,x2) = 3 map_1_A(x1) = max{2, x1 - 5} filter2_3_A(x1,x2,x3) = 5 filter2_4#_A(x1,x2,x3,x4) = 3 false_0_A = 6 filter_2#_A(x1,x2) = 3 filter_1_A(x1) = 9 app_A(x1,x2) = max{11, x2 + 8} true_0_A = 6 cons_0_A = 1 cons_1_A(x1) = max{6, x1 - 5} f_0_A = 1 f_1_A(x1) = max{10, x1 - 5} f_2_A(x1,x2) = max{0, x2 - 5} f_3_A(x1,x2,x3) = x3 + 2 filter_0_A = 10 filter_2_A(x1,x2) = x2 + 3 filter2_0_A = 1 filter2_1_A(x1) = max{0, x1 - 5} filter2_2_A(x1,x2) = max{10, x2 - 5} filter2_4_A(x1,x2,x3,x4) = x4 + 7 map_0_A = 1 map_2_A(x1,x2) = max{5, x2 + 2} s_0_A = 1 s_1_A(x1) = max{0, x1 - 4} |0|_0_A = 0 |1|_0_A = 1 nil_0_A = 4 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): max/plus interpretation on natural numbers: map_2#_A(x1,x2) = max{0, x1 - 3, x2 - 26} cons_2_A(x1,x2) = max{13, x1, x2} app#_A(x1,x2) = max{0, x1 - 13, x2 - 26} map_1_A(x1) = x1 + 10 filter2_3_A(x1,x2,x3) = max{x1 - 12, x2, x3 + 12} filter2_4#_A(x1,x2,x3,x4) = max{0, x1 - 38, x2 - 13, x3 - 26, x4 - 26} false_0_A = 0 filter_2#_A(x1,x2) = max{0, x1 - 13, x2 - 26} filter_1_A(x1) = max{10, x1 + 4} app_A(x1,x2) = max{26, x1 - 11, x2 + 12} true_0_A = 2 cons_0_A = 10 cons_1_A(x1) = max{13, x1 + 12} f_0_A = 17 f_1_A(x1) = x1 + 10 f_2_A(x1,x2) = max{x1 - 1, x2 + 10} f_3_A(x1,x2,x3) = max{13, x1 - 32, x2 - 45, x3 - 45} filter_0_A = 10 filter_2_A(x1,x2) = max{21, x1 - 11, x2 + 7} filter2_0_A = 10 filter2_1_A(x1) = x1 + 10 filter2_2_A(x1,x2) = max{x1 - 1, x2 + 12} filter2_4_A(x1,x2,x3,x4) = max{21, x1 - 27, x2 - 11, x3 + 1, x4 + 7} map_0_A = 10 map_2_A(x1,x2) = max{26, x1 - 11, x2 + 12} s_0_A = 10 s_1_A(x1) = max{13, x1 - 14} |0|_0_A = 15 |1|_0_A = 28 nil_0_A = 27 map_2#!_A(x1,x2) = x1 + 6 cons_2!_A(x1,x2) = 0 app#!_A(x1,x2) = max{6, x1 - 3} map_1!_A(x1) = max{4, x1 + 2} filter2_3!_A(x1,x2,x3) = max{5, x3 + 1} filter2_4#!_A(x1,x2,x3,x4) = max{6, x2 - 3} false_0!_A = 1 filter_2#!_A(x1,x2) = max{6, x1 - 3} filter_1!_A(x1) = max{4, x1 - 3} app!_A(x1,x2) = max{26, x1 - 14, x2 + 3} true_0!_A = 0 cons_0!_A = 0 cons_1!_A(x1) = max{0, x1 - 41} f_0!_A = 1 f_1!_A(x1) = 4 f_2!_A(x1,x2) = max{25, x1 - 16, x2 - 1} f_3!_A(x1,x2,x3) = max{31, x1 - 17, x3 + 15} filter_0!_A = 5 filter_2!_A(x1,x2) = max{25, x1 + 24, x2 + 11} filter2_0!_A = 1 filter2_1!_A(x1) = max{2, x1 - 6} filter2_2!_A(x1,x2) = max{4, x1 - 5, x2 - 1} filter2_4!_A(x1,x2,x3,x4) = max{25, x1 - 1, x2 - 1, x3 - 1} map_0!_A = 1 map_2!_A(x1,x2) = max{0, x1 - 5, x2 - 28} s_0!_A = 31 s_1!_A(x1) = max{30, x1 - 1} |0|_0!_A = 32 |1|_0!_A = 29 nil_0!_A = 0 partial status: pi(map_2#) = [] pi(cons_2) = [] pi(app#) = [] pi(map_1) = [] pi(filter2_3) = [] pi(filter2_4#) = [] pi(false_0) = [] pi(filter_2#) = [] pi(filter_1) = [] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(f_3) = [] pi(filter_0) = [] pi(filter_2) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_4) = [] pi(map_0) = [] pi(map_2) = [2] pi(s_0) = [] pi(s_1) = [] pi(|0|_0) = [] pi(|1|_0) = [] pi(nil_0) = [] The following rules are removed: p2, p7 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: map_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p2: map_2#(|fun|,cons_2(x,xs)) -> map_2#(|fun|,xs) p3: app#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p4: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p5: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p6: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p7: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,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: map_2#(|fun|,cons_2(x,xs)) -> map_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The set of usable rules consists of (no rules) 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{13, x2} cons_2_A(x1,x2) = max{x1 + 5, x2 + 13} base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): max/plus interpretation on natural numbers: map_2#_A(x1,x2) = 0 cons_2_A(x1,x2) = max{9, x1 - 4, x2 - 5} map_2#!_A(x1,x2) = 0 cons_2!_A(x1,x2) = max{4, x1 - 33, x2 - 68} partial status: pi(map_2#) = [2] pi(cons_2) = [1] 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#(filter2_3(x1,x2,x3),y) -> filter2_4#(x1,x2,x3,y) p2: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p3: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p4: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p5: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The set of usable rules consists of r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15, r16, r17, r18, r19, r20, r21, r22 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: app#_A(x1,x2) = 0 filter2_3_A(x1,x2,x3) = max{11, x3 - 7} filter2_4#_A(x1,x2,x3,x4) = 0 true_0_A = 8 filter_2#_A(x1,x2) = 0 cons_2_A(x1,x2) = max{9, x2 + 4} app_A(x1,x2) = max{11, x2 + 7} false_0_A = 8 cons_0_A = 1 cons_1_A(x1) = max{0, x1 - 7} f_0_A = 1 f_1_A(x1) = max{11, x1 - 7} f_2_A(x1,x2) = max{0, x2 - 7} f_3_A(x1,x2,x3) = 8 filter_0_A = 1 filter_1_A(x1) = x1 + 6 filter_2_A(x1,x2) = max{5, x2} filter2_0_A = 12 filter2_1_A(x1) = 11 filter2_2_A(x1,x2) = max{0, x2 - 7} filter2_4_A(x1,x2,x3,x4) = max{9, x4 + 4} map_0_A = 1 map_1_A(x1) = max{0, x1 - 7} map_2_A(x1,x2) = max{2, x2 + 1} s_0_A = 1 s_1_A(x1) = max{0, x1 - 10} |0|_0_A = 0 |1|_0_A = 9 nil_0_A = 6 base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): max/plus interpretation on natural numbers: app#_A(x1,x2) = max{0, x1 - 37, x2 - 34} filter2_3_A(x1,x2,x3) = max{x1 - 8, x2 + 4, x3 + 11} filter2_4#_A(x1,x2,x3,x4) = max{0, x1 - 45, x2 - 33, x3 - 34, x4 - 38} true_0_A = 44 filter_2#_A(x1,x2) = max{0, x1 - 33, x2 - 38} cons_2_A(x1,x2) = max{17, x1 + 4, x2} app_A(x1,x2) = max{25, x1 - 7, x2 + 11} false_0_A = 44 cons_0_A = 6 cons_1_A(x1) = x1 + 11 f_0_A = 6 f_1_A(x1) = max{12, x1 + 6} f_2_A(x1,x2) = max{x1 - 1, x2 + 6} f_3_A(x1,x2,x3) = max{x1 - 13, x2 - 13, x3 + 10} filter_0_A = 6 filter_1_A(x1) = x1 + 6 filter_2_A(x1,x2) = max{25, x2} filter2_0_A = 6 filter2_1_A(x1) = max{12, x1 + 6} filter2_2_A(x1,x2) = max{x1 - 1, x2 + 11} filter2_4_A(x1,x2,x3,x4) = max{25, x3 + 4, x4} map_0_A = 45 map_1_A(x1) = max{38, x1 + 6} map_2_A(x1,x2) = max{31, x1 - 3, x2 + 11} s_0_A = 31 s_1_A(x1) = max{25, x1 - 11} |0|_0_A = 12 |1|_0_A = 26 nil_0_A = 32 app#!_A(x1,x2) = max{17, x1 - 3, x2 - 1} filter2_3!_A(x1,x2,x3) = max{0, x1 - 48, x2 - 36} filter2_4#!_A(x1,x2,x3,x4) = max{16, x1 - 26, x2 - 3, x3 + 1, x4 - 2} true_0!_A = 1 filter_2#!_A(x1,x2) = max{18, x1 - 3, x2 - 2} cons_2!_A(x1,x2) = max{0, x1 - 26, x2 - 30} app!_A(x1,x2) = max{19, x1 - 46, x2 - 28} false_0!_A = 1 cons_0!_A = 1 cons_1!_A(x1) = max{0, x1 - 27} f_0!_A = 1 f_1!_A(x1) = max{2, x1 - 41} f_2!_A(x1,x2) = max{1, x1 - 40, x2 - 80} f_3!_A(x1,x2,x3) = max{13, x1 - 53, x2 - 80, x3 - 29} filter_0!_A = 1 filter_1!_A(x1) = 4 filter_2!_A(x1,x2) = max{5, x1 - 41, x2 - 29} filter2_0!_A = 20 filter2_1!_A(x1) = 19 filter2_2!_A(x1,x2) = max{1, x1 - 49, x2 - 37} filter2_4!_A(x1,x2,x3,x4) = max{0, x3 - 26, x4 - 30} map_0!_A = 1 map_1!_A(x1) = max{2, x1 - 34} map_2!_A(x1,x2) = max{1, x1 - 33, x2 - 19} s_0!_A = 1 s_1!_A(x1) = max{12, x1 - 2} |0|_0!_A = 11 |1|_0!_A = 14 nil_0!_A = 4 partial status: pi(app#) = [] pi(filter2_3) = [] pi(filter2_4#) = [] pi(true_0) = [] pi(filter_2#) = [] pi(cons_2) = [] pi(app) = [2] pi(false_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(f_3) = [] pi(filter_0) = [] pi(filter_1) = [1] pi(filter_2) = [2] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_4) = [] pi(map_0) = [] pi(map_1) = [] pi(map_2) = [2] pi(s_0) = [] pi(s_1) = [] pi(|0|_0) = [] pi(|1|_0) = [] pi(nil_0) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p2: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p3: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p4: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The estimated dependency graph contains the following SCCs: {p1, p2, p3} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p2: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p3: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The set of usable rules consists of r1, r3, r4, r6, r9, r10, r12, r17, r19 Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: filter2_4#_A(x1,x2,x3,x4) = x4 true_0_A = 21 filter_2#_A(x1,x2) = x2 cons_2_A(x1,x2) = max{x1 - 9, x2} app_A(x1,x2) = max{12, x1 - 6, x2} false_0_A = 14 cons_0_A = 1 cons_1_A(x1) = max{5, x1 - 1} f_0_A = 3 f_1_A(x1) = max{4, x1 - 1} f_2_A(x1,x2) = max{5, x1 - 8, x2 - 1} filter_0_A = 1 filter_1_A(x1) = max{7, x1 - 1} filter2_1_A(x1) = max{32, x1 - 1} filter2_2_A(x1,x2) = max{25, x1 - 8, x2 - 1} filter2_3_A(x1,x2,x3) = max{19, x1 - 14, x2 - 7, x3 - 3} map_0_A = 1 map_1_A(x1) = max{2, x1} map_2_A(x1,x2) = max{3, x1 - 5, x2} nil_0_A = 4 filter_2_A(x1,x2) = max{22, x1 - 26, x2} base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): max/plus interpretation on natural numbers: filter2_4#_A(x1,x2,x3,x4) = max{15, x2 - 1, x3 - 13, x4 + 2} true_0_A = 38 filter_2#_A(x1,x2) = max{15, x1 - 1, x2 + 2} cons_2_A(x1,x2) = max{12, x1 - 15, x2} app_A(x1,x2) = max{14, x1 - 12, x2 + 1} false_0_A = 38 cons_0_A = 2 cons_1_A(x1) = max{2, x1 - 35} f_0_A = 2 f_1_A(x1) = max{2, x1 + 1} f_2_A(x1,x2) = max{2, x1 - 17, x2 - 33} filter_0_A = 2 filter_1_A(x1) = max{2, x1 + 1} filter2_1_A(x1) = max{11, x1 + 9} filter2_2_A(x1,x2) = max{2, x1 - 3, x2 + 1} filter2_3_A(x1,x2,x3) = max{x1 - 15, x2 - 11, x3 + 1} map_0_A = 2 map_1_A(x1) = max{2, x1 - 15} map_2_A(x1,x2) = max{14, x1 - 27, x2 + 1} nil_0_A = 15 filter_2_A(x1,x2) = max{14, x1 - 39, x2 + 1} filter2_4#!_A(x1,x2,x3,x4) = x2 + 3 true_0!_A = 1 filter_2#!_A(x1,x2) = x1 + 3 cons_2!_A(x1,x2) = max{4, x1 - 37, x2 - 50} app!_A(x1,x2) = max{6, x1 - 3, x2 - 20} false_0!_A = 1 cons_0!_A = 8 cons_1!_A(x1) = max{7, x1 - 38} f_0!_A = 1 f_1!_A(x1) = max{2, x1 - 20} f_2!_A(x1,x2) = max{3, x1 - 20, x2 - 66} filter_0!_A = 1 filter_1!_A(x1) = max{7, x1 - 21} filter2_1!_A(x1) = max{0, x1 - 21} filter2_2!_A(x1,x2) = max{7, x2 - 21} filter2_3!_A(x1,x2,x3) = max{0, x1 - 7, x2 - 3, x3 - 36} map_0!_A = 1 map_1!_A(x1) = max{2, x1 - 21} map_2!_A(x1,x2) = max{5, x1 - 4, x2 - 20} nil_0!_A = 4 filter_2!_A(x1,x2) = x2 + 16 partial status: pi(filter2_4#) = [4] pi(true_0) = [] pi(filter_2#) = [2] pi(cons_2) = [2] pi(app) = [2] pi(false_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(map_0) = [] pi(map_1) = [] pi(map_2) = [] pi(nil_0) = [] pi(filter_2) = [2] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(true_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p2: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,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: f_3#(|0|_0(),|1|_0(),x) -> f_3#(s_1(x),x,x) p2: f_3#(x,y,s_1(z)) -> f_3#(|0|_0(),|1|_0(),z) and R consists of: r1: app(cons_0(),y) -> cons_1(y) r2: app(cons_1(x1),y) -> cons_2(x1,y) r3: app(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The set of usable rules consists of (no rules) Take the reduction pair: generalized weighted path order (>=MG, >G) base order 1: max/plus interpretation on natural numbers: f_3#_A(x1,x2,x3) = 23 |0|_0_A = 22 |1|_0_A = 22 s_1_A(x1) = max{24, x1 - 33} base order 2: marked-algebra reduction triple (>=A, >=A!, >A!): max/plus interpretation on natural numbers: f_3#_A(x1,x2,x3) = max{0, x1 - 51, x2 - 32, x3 - 32} |0|_0_A = 50 |1|_0_A = 31 s_1_A(x1) = max{30, x1 + 19} f_3#!_A(x1,x2,x3) = max{1, x3 - 28} |0|_0!_A = 3 |1|_0!_A = 3 s_1!_A(x1) = max{5, x1 - 27} partial status: pi(f_3#) = [] pi(|0|_0) = [] pi(|1|_0) = [] pi(s_1) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: f_3#(|0|_0(),|1|_0(),x) -> f_3#(s_1(x),x,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(f_0(),y) -> f_1(y) r4: app(f_1(x1),y) -> f_2(x1,y) r5: app(f_2(x1,x2),y) -> f_3(x1,x2,y) r6: app(filter_0(),y) -> filter_1(y) r7: app(filter_1(x1),y) -> filter_2(x1,y) r8: app(filter2_0(),y) -> filter2_1(y) r9: app(filter2_1(x1),y) -> filter2_2(x1,y) r10: app(filter2_2(x1,x2),y) -> filter2_3(x1,x2,y) r11: app(filter2_3(x1,x2,x3),y) -> filter2_4(x1,x2,x3,y) r12: app(map_0(),y) -> map_1(y) r13: app(map_1(x1),y) -> map_2(x1,y) r14: app(s_0(),y) -> s_1(y) r15: f_3(|0|_0(),|1|_0(),x) -> f_3(s_1(x),x,x) r16: f_3(x,y,s_1(z)) -> s_1(f_3(|0|_0(),|1|_0(),z)) r17: map_2(|fun|,nil_0()) -> nil_0() r18: map_2(|fun|,cons_2(x,xs)) -> cons_2(app(|fun|,x),map_2(|fun|,xs)) r19: filter_2(|fun|,nil_0()) -> nil_0() r20: filter_2(|fun|,cons_2(x,xs)) -> filter2_4(app(|fun|,x),|fun|,x,xs) r21: filter2_4(true_0(),|fun|,x,xs) -> cons_2(x,filter_2(|fun|,xs)) r22: filter2_4(false_0(),|fun|,x,xs) -> filter_2(|fun|,xs) The estimated dependency graph contains the following SCCs: (no SCCs)