YES We show the termination of the TRS R: app(app(times(),x),|0|()) -> |0|() app(app(times(),x),app(s(),y)) -> app(app(plus(),app(app(times(),x),y)),x) app(app(plus(),x),|0|()) -> x app(app(plus(),|0|()),x) -> x app(app(plus(),x),app(s(),y)) -> app(s(),app(app(plus(),x),y)) app(app(plus(),app(s(),x)),y) -> app(s(),app(app(plus(),x),y)) 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(plus_0(),y) -> plus_1(y) app(plus_1(x1),y) -> plus_2(x1,y) app(s_0(),y) -> s_1(y) app(times_0(),y) -> times_1(y) app(times_1(x1),y) -> times_2(x1,y) times_2(x,|0|_0()) -> |0|_0() times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) plus_2(x,|0|_0()) -> x plus_2(|0|_0(),x) -> x plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) plus_2(s_1(x),y) -> s_1(plus_2(x,y)) 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#(plus_1(x1),y) -> plus_2#(x1,y) p5: app#(times_1(x1),y) -> times_2#(x1,y) p6: times_2#(x,s_1(y)) -> plus_2#(times_2(x,y),x) p7: times_2#(x,s_1(y)) -> times_2#(x,y) p8: plus_2#(x,s_1(y)) -> plus_2#(x,y) p9: plus_2#(s_1(x),y) -> plus_2#(x,y) p10: map_2#(f,cons_2(x,xs)) -> app#(f,x) p11: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) p12: filter_2#(f,cons_2(x,xs)) -> filter2_4#(app(f,x),f,x,xs) p13: filter_2#(f,cons_2(x,xs)) -> app#(f,x) p14: filter2_4#(true_0(),f,x,xs) -> filter_2#(f,xs) p15: 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p1, p2, p3, p10, p11, p12, p13, p14, p15} {p7} {p8, 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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, r11, r13, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: app#_A(x1,x2) = x1 + x2 + 7 filter_1_A(x1) = x1 + 10 filter_2#_A(x1,x2) = x1 + x2 + 9 cons_2_A(x1,x2) = x1 + x2 + 6 map_1_A(x1) = x1 + 2 map_2#_A(x1,x2) = x1 + x2 + 7 filter2_3_A(x1,x2,x3) = x1 + x2 + x3 + 4 filter2_4#_A(x1,x2,x3,x4) = x2 + x4 + 10 false_0_A() = 1 app_A(x1,x2) = x1 + x2 + 14 true_0_A() = 1 cons_0_A() = 1 cons_1_A(x1) = x1 + 7 filter_0_A() = 1 filter2_0_A() = 1 filter2_1_A(x1) = x1 + 2 filter2_2_A(x1,x2) = x1 + x2 + 3 map_0_A() = 1 plus_0_A() = 1 plus_1_A(x1) = x1 + 2 s_0_A() = 1 s_1_A(x1) = x1 + 3 times_0_A() = 2 times_1_A(x1) = x1 + 1 plus_2_A(x1,x2) = x2 + 6 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 11 nil_0_A() = 1 base order 2: precedence: app# > filter2_4# > filter_2# = filter_2 > app > cons_2 = plus_2 > filter_1 = map_2# = false_0 = true_0 = cons_1 = plus_1 = s_1 = nil_0 > map_1 = filter2_3 = cons_0 = filter_0 = plus_0 = s_0 > filter2_2 = map_0 = times_1 = |0|_0 > filter2_1 = times_0 > filter2_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) = [3] pi(filter2_4#) = [] pi(false_0) = [] pi(app) = [] pi(true_0) = [] pi(cons_0) = [] pi(cons_1) = [1] pi(filter_0) = [] pi(filter2_0) = [] pi(filter2_1) = [1] pi(filter2_2) = [1, 2] pi(map_0) = [] pi(plus_0) = [] pi(plus_1) = [1] pi(s_0) = [] pi(s_1) = [1] pi(times_0) = [] pi(times_1) = [1] pi(plus_2) = [] pi(|0|_0) = [] pi(filter_2) = [] pi(nil_0) = [] 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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, r11, r13, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: filter_2#_A(x1,x2) = x1 + x2 + 3 cons_2_A(x1,x2) = x1 + x2 + 3 app#_A(x1,x2) = x1 + x2 + 4 filter2_3_A(x1,x2,x3) = x1 + x2 + x3 + 4 filter2_4#_A(x1,x2,x3,x4) = x2 + x4 + 5 true_0_A() = 1 app_A(x1,x2) = x1 + x2 + 4 false_0_A() = 1 map_1_A(x1) = x1 + 2 map_2#_A(x1,x2) = x1 + x2 + 4 cons_0_A() = 1 cons_1_A(x1) = x1 + 2 filter_0_A() = 1 filter_1_A(x1) = x1 + 2 filter2_0_A() = 1 filter2_1_A(x1) = x1 + 2 filter2_2_A(x1,x2) = x1 + x2 + 3 map_0_A() = 1 plus_0_A() = 1 plus_1_A(x1) = x1 + 2 s_0_A() = 4 s_1_A(x1) = x1 + 5 times_0_A() = 6 times_1_A(x1) = x1 + 5 plus_2_A(x1,x2) = x2 + 3 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 3 nil_0_A() = 1 base order 2: precedence: map_2# > app# > filter2_4# = filter_2 > filter_2# = filter_1 > app = false_0 = filter_0 = times_0 = nil_0 > cons_2 = filter2_3 = map_1 = times_1 = plus_2 > true_0 = cons_1 = filter2_2 = map_0 = plus_1 = s_1 > cons_0 = filter2_1 = plus_0 = s_0 > filter2_0 = |0|_0 partial status: pi(filter_2#) = [2] pi(cons_2) = [2] pi(app#) = [2] pi(filter2_3) = [3] pi(filter2_4#) = [4] pi(true_0) = [] pi(app) = [2] pi(false_0) = [] pi(map_1) = [1] pi(map_2#) = [] pi(cons_0) = [] pi(cons_1) = [1] pi(filter_0) = [] pi(filter_1) = [1] pi(filter2_0) = [] pi(filter2_1) = [1] pi(filter2_2) = [2] pi(map_0) = [] pi(plus_0) = [] pi(plus_1) = [1] pi(s_0) = [] pi(s_1) = [1] pi(times_0) = [] pi(times_1) = [1] pi(plus_2) = [] pi(|0|_0) = [] pi(filter_2) = [2] pi(nil_0) = [] The following rules are removed: p1 -- 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(),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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p5, p6, p7} {p2, p3, p4} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: map_2#(f,cons_2(x,xs)) -> app#(f,x) p2: app#(map_1(x1),y) -> map_2#(x1,y) p3: map_2#(f,cons_2(x,xs)) -> map_2#(f,xs) 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r3, r5, r6, r7, r11, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: map_2#_A(x1,x2) = x1 + x2 + 6 cons_2_A(x1,x2) = x1 + x2 + 5 app#_A(x1,x2) = x1 + x2 + 6 map_1_A(x1) = x1 + 5 app_A(x1,x2) = 4 filter_0_A() = 2 filter_1_A(x1) = 1 filter2_0_A() = 4 filter2_1_A(x1) = 3 filter2_2_A(x1,x2) = 2 filter2_3_A(x1,x2,x3) = 1 plus_0_A() = 2 plus_1_A(x1) = 1 times_0_A() = 2 times_1_A(x1) = 1 plus_2_A(x1,x2) = x2 + 12 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 5 nil_0_A() = 1 base order 2: precedence: app# > map_2# = plus_2 = filter_2 > cons_2 = map_1 = app = filter_0 = filter2_0 = plus_0 = times_0 = |0|_0 > filter_1 = filter2_2 = plus_1 = times_1 = nil_0 > filter2_1 = filter2_3 partial status: pi(map_2#) = [] pi(cons_2) = [] pi(app#) = [] pi(map_1) = [1] pi(app) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(filter2_3) = [] pi(plus_0) = [] pi(plus_1) = [] pi(times_0) = [] pi(times_1) = [] pi(plus_2) = [2] pi(|0|_0) = [] pi(filter_2) = [] pi(nil_0) = [] The following rules are removed: p1 -- 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: map_2#_A(x1,x2) = x2 cons_2_A(x1,x2) = x2 + 1 plus_2_A(x1,x2) = x2 + 2 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 2 nil_0_A() = 1 base order 2: precedence: cons_2 = |0|_0 > map_2# = filter_2 > plus_2 = nil_0 partial status: pi(map_2#) = [2] pi(cons_2) = [] pi(plus_2) = [2] pi(|0|_0) = [] pi(filter_2) = [1] 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: filter2_4#(true_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#(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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, r11, r13, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: filter2_4#_A(x1,x2,x3,x4) = x4 + 3 true_0_A() = 1 filter_2#_A(x1,x2) = x2 + 2 cons_2_A(x1,x2) = x1 + x2 + 4 app_A(x1,x2) = x1 + x2 + 7 false_0_A() = 1 cons_0_A() = 1 cons_1_A(x1) = x1 + 2 filter_0_A() = 1 filter_1_A(x1) = x1 + 2 filter2_0_A() = 1 filter2_1_A(x1) = x1 + 2 filter2_2_A(x1,x2) = x1 + x2 + 3 filter2_3_A(x1,x2,x3) = x1 + x2 + x3 + 4 map_0_A() = 1 map_1_A(x1) = x1 + 2 plus_0_A() = 1 plus_1_A(x1) = x1 + 2 s_0_A() = 1 s_1_A(x1) = x1 + 4 times_0_A() = 1 times_1_A(x1) = x1 + 2 plus_2_A(x1,x2) = x2 + 3 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 4 nil_0_A() = 1 base order 2: precedence: filter2_3 > filter2_2 = filter_2 > app = nil_0 > cons_2 = filter_1 = filter2_1 = map_1 > filter2_4# = cons_1 = filter_0 = filter2_0 = map_0 = s_1 = times_1 = plus_2 = |0|_0 > filter_2# = cons_0 = plus_1 = s_0 = times_0 > true_0 = false_0 = plus_0 partial status: pi(filter2_4#) = [] pi(true_0) = [] pi(filter_2#) = [] pi(cons_2) = [2] pi(app) = [2] pi(false_0) = [] pi(cons_0) = [] pi(cons_1) = [1] pi(filter_0) = [] pi(filter_1) = [1] pi(filter2_0) = [] pi(filter2_1) = [1] pi(filter2_2) = [2] pi(filter2_3) = [3] pi(map_0) = [] pi(map_1) = [1] pi(plus_0) = [] pi(plus_1) = [1] pi(s_0) = [] pi(s_1) = [1] pi(times_0) = [] pi(times_1) = [1] pi(plus_2) = [] pi(|0|_0) = [] pi(filter_2) = [1] pi(nil_0) = [] 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#(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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#(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r2, r3, r5, r6, r9, r11, r13, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: filter_2#_A(x1,x2) = x1 + x2 + 2 cons_2_A(x1,x2) = x1 + x2 + 2 filter2_4#_A(x1,x2,x3,x4) = x2 + x4 + 3 app_A(x1,x2) = x1 + x2 + 6 false_0_A() = 3 cons_0_A() = 1 cons_1_A(x1) = x1 + 3 filter_0_A() = 1 filter_1_A(x1) = x1 + 2 filter2_0_A() = 1 filter2_1_A(x1) = x1 + 2 filter2_2_A(x1,x2) = x1 + 1 map_0_A() = 1 map_1_A(x1) = x1 + 2 plus_0_A() = 1 plus_1_A(x1) = x1 + 2 s_0_A() = 1 s_1_A(x1) = x1 + 3 times_0_A() = 2 times_1_A(x1) = 1 plus_2_A(x1,x2) = x2 + 6 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 5 nil_0_A() = 1 base order 2: precedence: filter2_1 > filter2_2 = filter_2 > app > filter_2# = times_0 > filter2_4# = false_0 = filter_1 = filter2_0 = map_1 = plus_1 = times_1 = plus_2 = |0|_0 = nil_0 > cons_2 = filter_0 = map_0 = plus_0 = s_1 > cons_1 = s_0 > cons_0 partial status: pi(filter_2#) = [1] pi(cons_2) = [1] pi(filter2_4#) = [] pi(app) = [1] pi(false_0) = [] pi(cons_0) = [] pi(cons_1) = [1] pi(filter_0) = [] pi(filter_1) = [1] pi(filter2_0) = [] pi(filter2_1) = [1] pi(filter2_2) = [1] pi(map_0) = [] pi(map_1) = [1] pi(plus_0) = [] pi(plus_1) = [1] pi(s_0) = [] pi(s_1) = [1] pi(times_0) = [] pi(times_1) = [] pi(plus_2) = [] pi(|0|_0) = [] pi(filter_2) = [2] 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#(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: 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: times_2#(x,s_1(y)) -> times_2#(x,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(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r6, r9, r11, r13, r14, r19, r24 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: times_2#_A(x1,x2) = x2 s_1_A(x1) = x1 + 3 app_A(x1,x2) = x2 + 5 cons_0_A() = 5 cons_1_A(x1) = 4 filter_0_A() = 2 filter_1_A(x1) = 1 filter2_0_A() = 1 filter2_1_A(x1) = x1 + 2 filter2_2_A(x1,x2) = x2 + 4 map_0_A() = 2 map_1_A(x1) = 1 plus_0_A() = 2 plus_1_A(x1) = 1 s_0_A() = 1 times_0_A() = 2 times_1_A(x1) = 1 plus_2_A(x1,x2) = x2 + 2 |0|_0_A() = 1 filter_2_A(x1,x2) = x1 + x2 + 6 nil_0_A() = 1 base order 2: precedence: cons_0 > cons_1 > app = filter_0 = map_0 = plus_0 = times_0 > filter2_2 = filter_2 > filter_1 = filter2_1 = map_1 = times_1 = plus_2 = |0|_0 = nil_0 > s_1 = filter2_0 = plus_1 > times_2# = s_0 partial status: pi(times_2#) = [] pi(s_1) = [1] pi(app) = [2] pi(cons_0) = [] pi(cons_1) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [1] pi(filter2_2) = [2] pi(map_0) = [] pi(map_1) = [] pi(plus_0) = [] pi(plus_1) = [] pi(s_0) = [] pi(times_0) = [] pi(times_1) = [] pi(plus_2) = [] pi(|0|_0) = [] 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: plus_2#(x,s_1(y)) -> plus_2#(x,y) p2: plus_2#(s_1(x),y) -> plus_2#(x,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(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r2, r3, r5, r6, r9, r11, r13, r14, r19, r23, r24, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: plus_2#_A(x1,x2) = x1 + x2 s_1_A(x1) = x1 + 4 app_A(x1,x2) = x2 + 5 cons_0_A() = 1 cons_1_A(x1) = 2 cons_2_A(x1,x2) = 1 filter_0_A() = 2 filter_1_A(x1) = 1 filter2_0_A() = 2 filter2_1_A(x1) = 1 filter2_2_A(x1,x2) = 2 map_0_A() = 2 map_1_A(x1) = 1 plus_0_A() = 2 plus_1_A(x1) = 1 s_0_A() = 1 times_0_A() = 1 times_1_A(x1) = 2 plus_2_A(x1,x2) = x2 + 2 |0|_0_A() = 1 map_2_A(x1,x2) = x1 + x2 + 3 filter_2_A(x1,x2) = x1 + x2 + 3 nil_0_A() = 1 filter2_4_A(x1,x2,x3,x4) = x2 + x3 + x4 + 7 true_0_A() = 2 base order 2: precedence: plus_2# = s_0 = plus_2 > s_1 = filter_0 = times_0 = filter_2 > cons_1 = |0|_0 = true_0 > app = cons_0 = cons_2 = filter2_0 = filter2_2 = map_0 = plus_0 = map_2 = filter2_4 > filter_1 = filter2_1 = map_1 = plus_1 = times_1 = nil_0 partial status: pi(plus_2#) = [] pi(s_1) = [] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [] pi(cons_2) = [] pi(filter_0) = [] pi(filter_1) = [] pi(filter2_0) = [] pi(filter2_1) = [] pi(filter2_2) = [] pi(map_0) = [] pi(map_1) = [] pi(plus_0) = [] pi(plus_1) = [] pi(s_0) = [] pi(times_0) = [] pi(times_1) = [] pi(plus_2) = [] pi(|0|_0) = [] pi(map_2) = [1] pi(filter_2) = [2] pi(nil_0) = [] pi(filter2_4) = [3] pi(true_0) = [] The following rules are removed: p1 -- SCC decomposition. Consider the dependency pair problem (P, R), where P consists of p1: plus_2#(s_1(x),y) -> plus_2#(x,y) and R consists of: r1: app(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The estimated dependency graph contains the following SCCs: {p1} -- Reduction pair. Consider the dependency pair problem (P, R), where P consists of p1: plus_2#(s_1(x),y) -> plus_2#(x,y) and R consists of: r1: app(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(plus_0(),y) -> plus_1(y) r12: app(plus_1(x1),y) -> plus_2(x1,y) r13: app(s_0(),y) -> s_1(y) r14: app(times_0(),y) -> times_1(y) r15: app(times_1(x1),y) -> times_2(x1,y) r16: times_2(x,|0|_0()) -> |0|_0() r17: times_2(x,s_1(y)) -> plus_2(times_2(x,y),x) r18: plus_2(x,|0|_0()) -> x r19: plus_2(|0|_0(),x) -> x r20: plus_2(x,s_1(y)) -> s_1(plus_2(x,y)) r21: plus_2(s_1(x),y) -> s_1(plus_2(x,y)) r22: map_2(f,nil_0()) -> nil_0() r23: map_2(f,cons_2(x,xs)) -> cons_2(app(f,x),map_2(f,xs)) r24: filter_2(f,nil_0()) -> nil_0() r25: filter_2(f,cons_2(x,xs)) -> filter2_4(app(f,x),f,x,xs) r26: filter2_4(true_0(),f,x,xs) -> cons_2(x,filter_2(f,xs)) r27: filter2_4(false_0(),f,x,xs) -> filter_2(f,xs) The set of usable rules consists of r1, r3, r5, r6, r7, r9, r11, r13, r14, r19, r24, r26 Take the reduction pair: generalized weighted path order (>=MG, >MG) base order 1: matrix interpretation with standard point-wise order: carrier: N^1 order: standard order interpretations: plus_2#_A(x1,x2) = x1 + x2 + 4 s_1_A(x1) = x1 + 3 app_A(x1,x2) = x2 + 4 cons_0_A() = 1 cons_1_A(x1) = x1 + 2 filter_0_A() = 4 filter_1_A(x1) = 3 filter2_0_A() = 3 filter2_1_A(x1) = 2 filter2_2_A(x1,x2) = 1 filter2_3_A(x1,x2,x3) = 2 map_0_A() = 2 map_1_A(x1) = 1 plus_0_A() = 2 plus_1_A(x1) = 1 s_0_A() = 1 times_0_A() = 3 times_1_A(x1) = 2 plus_2_A(x1,x2) = x2 + 2 |0|_0_A() = 1 filter_2_A(x1,x2) = 2 nil_0_A() = 1 filter2_4_A(x1,x2,x3,x4) = x2 + x3 + x4 + 6 true_0_A() = 3 cons_2_A(x1,x2) = x1 + 5 base order 2: precedence: map_0 > plus_2# = cons_1 = filter_0 = filter2_3 = map_1 = plus_0 = times_0 = filter2_4 = cons_2 > cons_0 = filter_1 = true_0 > filter_2 > app = filter2_0 = filter2_2 = s_0 = nil_0 > s_1 = filter2_1 > plus_2 > plus_1 > times_1 = |0|_0 partial status: pi(plus_2#) = [2] pi(s_1) = [1] pi(app) = [] pi(cons_0) = [] pi(cons_1) = [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(plus_0) = [] pi(plus_1) = [] pi(s_0) = [] pi(times_0) = [] pi(times_1) = [] pi(plus_2) = [] pi(|0|_0) = [] pi(filter_2) = [] pi(nil_0) = [] pi(filter2_4) = [] pi(true_0) = [] pi(cons_2) = [1] The following rules are removed: p1 Then no dependency pair remains.