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, r4, r19 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: map_2#_A(x1,x2) = max{6, x1 + 4} cons_2_A(x1,x2) = max{6, x1 - 22, x2 - 22} app#_A(x1,x2) = x1 + 3 map_1_A(x1) = max{7, x1 + 5} filter2_3_A(x1,x2,x3) = max{x1 + 5, x2 + 8, x3 + 5} filter2_4#_A(x1,x2,x3,x4) = x2 + 7 false_0_A = 1 filter_2#_A(x1,x2) = x1 + 7 filter_1_A(x1) = max{13, x1 + 8} app_A(x1,x2) = max{21, x1 - 11} true_0_A = 1 cons_0_A = 1 cons_1_A(x1) = 2 f_1_A(x1) = max{2, x1 - 11} f_2_A(x1,x2) = max{12, x1 - 23} filter_2_A(x1,x2) = max{20, x1 - 56, x2 - 30} nil_0_A = 0 base order 2: precedence: map_1 > map_2# > app# = false_0 > filter2_4# = filter_2# = app > filter_1 = cons_0 = f_2 = filter_2 > f_1 = nil_0 > cons_2 = filter2_3 > true_0 = cons_1 partial status: pi(map_2#) = [1] pi(cons_2) = [] pi(app#) = [1] pi(map_1) = [1] pi(filter2_3) = [2, 3] pi(filter2_4#) = [2] pi(false_0) = [] pi(filter_2#) = [1] pi(filter_1) = [1] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p2 -- 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: app#(filter_1(x1),y) -> filter_2#(x1,y) p7: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p8: 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, p8} -- 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 r1, r3, r4, r6, r8, r9, r10, r14, r19 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: map_2#_A(x1,x2) = max{x1 + 8, x2 + 8} cons_2_A(x1,x2) = max{6, x1, x2 + 2} app_A(x1,x2) = max{x1 + 2, x2} cons_0_A = 6 cons_1_A(x1) = max{7, x1 - 3} f_0_A = 6 f_1_A(x1) = max{7, x1 - 3} f_2_A(x1,x2) = max{8, x1 - 4, x2 - 19} filter_0_A = 3 filter_1_A(x1) = max{2, x1 - 7} filter2_0_A = 1 filter2_1_A(x1) = max{2, x1 - 11} filter2_2_A(x1,x2) = max{3, x1 - 10, x2 - 4} filter2_3_A(x1,x2,x3) = max{4, x1 - 9, x2 - 3, x3 - 3} s_0_A = 9 s_1_A(x1) = max{10, x1 - 13} filter_2_A(x1,x2) = max{4, x1 - 5, x2 - 15} nil_0_A = 3 base order 2: precedence: map_2# = app > filter2_3 = s_1 > cons_2 = filter2_2 = s_0 = filter_2 > cons_1 = f_2 = filter_1 = filter2_1 = nil_0 > cons_0 = f_1 = filter_0 = filter2_0 > f_0 partial status: pi(map_2#) = [2] pi(cons_2) = [2] pi(app) = [1] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(s_0) = [] pi(s_1) = [] pi(filter_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: 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) p6: app#(filter_1(x1),y) -> filter_2#(x1,y) 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 r19 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: app#_A(x1,x2) = x1 + 7 filter2_3_A(x1,x2,x3) = max{16, x1 - 3, x2 + 8, x3 - 3} filter2_4#_A(x1,x2,x3,x4) = x2 + 8 true_0_A = 1 filter_2#_A(x1,x2) = x1 + 8 cons_2_A(x1,x2) = max{7, x1 - 19, x2 - 19} app_A(x1,x2) = max{15, x1 - 42} false_0_A = 17 filter_1_A(x1) = max{17, x1 + 8} filter_2_A(x1,x2) = max{18, x1 - 32, x2 - 8} nil_0_A = 0 base order 2: precedence: filter_2 > false_0 = nil_0 > cons_2 = app > app# = filter2_3 = filter_1 > filter2_4# = filter_2# > true_0 partial status: pi(app#) = [1] pi(filter2_3) = [] pi(filter2_4#) = [2] pi(true_0) = [] pi(filter_2#) = [1] pi(cons_2) = [] pi(app) = [] pi(false_0) = [] pi(filter_1) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p6 -- SCC decomposition. 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 estimated dependency graph contains the following SCCs: {p1, p2, p3, p4, p5} -- 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#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p3: filter_2#(|fun|,cons_2(x,xs)) -> app#(|fun|,x) p4: filter_2#(|fun|,cons_2(x,xs)) -> filter2_4#(app(|fun|,x),|fun|,x,xs) p5: 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, r6, r8, r12, r14, r19 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 - 14} filter2_3_A(x1,x2,x3) = max{x1 - 1, x2 + 20, x3 - 12} filter2_4#_A(x1,x2,x3,x4) = max{5, x2 - 13} false_0_A = 1 filter_2#_A(x1,x2) = max{5, x1 - 13} cons_2_A(x1,x2) = max{3, x1 - 40, x2 - 56} app_A(x1,x2) = max{23, x1 - 25, x2 - 13} true_0_A = 1 cons_0_A = 1 cons_1_A(x1) = max{2, x1 - 14} f_0_A = 21 f_1_A(x1) = max{22, x1 - 31} f_2_A(x1,x2) = max{23, x1 - 56, x2 - 14} filter_0_A = 20 filter_1_A(x1) = max{21, x1 - 14} filter2_0_A = 22 filter2_1_A(x1) = max{23, x1 - 13} map_0_A = 15 map_1_A(x1) = max{16, x1 - 39} s_0_A = 21 s_1_A(x1) = max{22, x1 - 19} filter_2_A(x1,x2) = max{22, x1 - 104, x2 - 14} nil_0_A = 0 base order 2: precedence: app# = app = f_0 > filter2_4# = filter_2# = s_1 > cons_2 = map_1 = s_0 = filter_2 > filter2_3 = false_0 = true_0 = cons_1 = f_2 = filter_1 = map_0 = nil_0 > cons_0 = f_1 = filter_0 = filter2_0 > filter2_1 partial status: pi(app#) = [] pi(filter2_3) = [2] pi(filter2_4#) = [] pi(false_0) = [] pi(filter_2#) = [] pi(cons_2) = [] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(map_0) = [] pi(map_1) = [] pi(s_0) = [] pi(s_1) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p3 -- SCC decomposition. 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#(false_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#(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} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(false_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#(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, r6, r8, r12, r14, r19 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 + 17, x4 + 17} false_0_A = 31 filter_2#_A(x1,x2) = x2 + 16 cons_2_A(x1,x2) = max{25, x1 + 18, x2 + 18} app_A(x1,x2) = max{x1 - 5, x2 + 29} true_0_A = 33 cons_0_A = 4 cons_1_A(x1) = max{29, x1 + 24} f_0_A = 1 f_1_A(x1) = max{3, x1 - 19} f_2_A(x1,x2) = max{4, x1 - 24, x2 - 85} filter_0_A = 1 filter_1_A(x1) = max{4, x1 - 19} filter2_0_A = 2 filter2_1_A(x1) = max{3, x1 - 1} map_0_A = 3 map_1_A(x1) = max{4, x1 - 1} s_0_A = 4 s_1_A(x1) = max{28, x1 - 28} filter_2_A(x1,x2) = 30 nil_0_A = 16 base order 2: precedence: app = cons_0 > cons_2 = s_1 > filter2_4# = true_0 = cons_1 = filter2_1 = map_1 = s_0 > filter_2# = f_2 = filter2_0 = map_0 > false_0 = f_1 > f_0 = filter_0 = filter_2 > filter_1 = nil_0 partial status: pi(filter2_4#) = [] pi(false_0) = [] pi(filter_2#) = [2] pi(cons_2) = [2] pi(app) = [2] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(map_0) = [] pi(map_1) = [] pi(s_0) = [] pi(s_1) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p2 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: filter2_4#(false_0(),|fun|,x,xs) -> filter_2#(|fun|,xs) p2: 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: (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 r1, r2, r3, r4, r6, r9, r12, r19 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: max/plus interpretation on natural numbers: f_3#_A(x1,x2,x3) = max{x1 + 147, x2 + 116, x3 + 180} |0|_0_A = 146 |1|_0_A = 81 s_1_A(x1) = max{114, x1 + 16} app_A(x1,x2) = max{4, x1 - 6, x2 - 18} cons_0_A = 1 cons_1_A(x1) = max{2, x1 - 19} cons_2_A(x1,x2) = max{3, x1 - 26, x2 - 32} f_0_A = 3 f_1_A(x1) = max{4, x1 - 18} f_2_A(x1,x2) = max{3, x1 - 25, x2 - 19} filter_0_A = 1 filter_1_A(x1) = max{2, x1 - 19} filter2_1_A(x1) = x1 + 8 filter2_2_A(x1,x2) = max{1, x1 - 7} map_0_A = 7 map_1_A(x1) = 3 filter_2_A(x1,x2) = max{30, x1 - 5, x2 + 9} nil_0_A = 46 base order 2: precedence: |1|_0 > f_3# > s_1 = filter2_1 = filter_2 > app = map_0 = nil_0 > |0|_0 = cons_0 = cons_2 = f_2 = filter_1 = filter2_2 = map_1 > cons_1 = f_1 = filter_0 > f_0 partial status: pi(f_3#) = [] pi(|0|_0) = [] pi(|1|_0) = [] pi(s_1) = [1] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(cons_2) = [] pi(f_0) = [] pi(f_1) = [] pi(f_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_1) = [1] pi(filter2_2) = [] pi(map_0) = [] pi(map_1) = [] pi(filter_2) = [2] pi(nil_0) = [] 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)