Profiling results ----------------- Total cpu time observed: 11852ms (out of 12152ms) Number of samples taken: 51 (once every 232ms) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= ??? [40] 100.0% [1] 11650(98.3%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [9] 100.0% ----------------------------------------------------------------------- ??? [40] 100.0% [2] 6700(56.5%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [10] 74.4% finalize-table! [12] 22.6% get-final-combination [18] 3.0% ----------------------------------------------------------------------- loop [77] 4.7% ??? [40] 95.3% [3] 4268(36.0%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [11] 75.5% for-loop [13] 24.5% ----------------------------------------------------------------------- loop [77] 100.0% [4] 638(5.4%) 0(0.0%) completely-simplify-alt ...erbie/src/glue.rkt:87:0 simplify-expr [11] 100.0% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [5] 480(4.0%) 0(0.0%) parse-loop12 ...s/racket/match/compiler.rkt:410:15 loop [77] 77.1% loop [15] 22.9% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [6] 460(3.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:322:33 for-loop [14] 100.0% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [7] 220(1.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [17] 100.0% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [8] 220(1.9%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:295:23 for-loop [16] 100.0% ----------------------------------------------------------------------- profile-thunk14 [1] 100.0% [9] 11650(98.3%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [40] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [10] 4982(42.0%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [19] 100.0% ----------------------------------------------------------------------- completely-simplify-alt [4] 16.5% simplify [3] 83.5% [11] 3860(32.6%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [20] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [12] 1516(12.8%) 0(0.0%) finalize-table! ...k/herbie/src/mainloop.rkt:264:0 post-process [21] 100.0% ----------------------------------------------------------------------- simplify [3] 100.0% [13] 1046(8.8%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [20] 100.0% ----------------------------------------------------------------------- ??? [6] 100.0% [14] 460(3.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:324:46 hash-ref! [88] 76.1% simplify [22] 23.9% ----------------------------------------------------------------------- parse-loop12 [5] 1.4% loop [15] 98.6% [15] 220(1.9%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:37:19 loop [15] 98.6% ->flonum [23] 1.4% ----------------------------------------------------------------------- ??? [8] 100.0% [16] 220(1.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:298:27 hash-ref! [88] 100.0% ----------------------------------------------------------------------- ??? [7] 100.0% [17] 220(1.9%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [88] 100.0% ----------------------------------------------------------------------- run-improve58 [2] 100.0% [18] 202(1.7%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 extract-alt [24] 100.0% ----------------------------------------------------------------------- for-loop [10] 100.0% [19] 4982(42.0%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [26] 81.6% localize-error [29] 5.2% gen-rewrites! [30] 4.6% choose-best-alt! [31] 4.4% finalize-iter! [32] 4.2% ----------------------------------------------------------------------- for-loop [13] 21.3% simplify-expr [11] 78.7% [20] 4906(41.4%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [25] 100.0% ----------------------------------------------------------------------- finalize-table! [12] 100.0% [21] 1516(12.8%) 0(0.0%) post-process .../ztatlock/herbie/src/glue.rkt:95:0 for-loop [28] 43.4% loop [77] 42.1% localize-error [29] 14.5% ----------------------------------------------------------------------- for-loop [14] 47.8% hash-ref! [88] 52.2% [22] 460(3.9%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 f6 [27] 52.2% debug-print [84] 47.8% ----------------------------------------------------------------------- loop [15] 100.0% [23] 220(1.9%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [105] 100.0% ----------------------------------------------------------------------- get-final-combination [18] 100.0% [24] 202(1.7%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [77] 100.0% ----------------------------------------------------------------------- iterate-egraph!5 [20] 100.0% [25] 4906(41.4%) 0(0.0%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [34] 64.4% loop [35] 31.6% apply-match [41] 4.1% ----------------------------------------------------------------------- run-iter! [19] 100.0% [26] 4066(34.3%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [33] 100.0% ----------------------------------------------------------------------- f6 [27] 18.9% simplify [22] 34.4% hash-ref! [88] 46.7% [27] 698(5.9%) 0(0.0%) f6 ...et/collects/racket/match/compiler.rkt:499:40 map [71] 46.7% make-keyword-procedure [38] 34.4% f6 [27] 18.9% ----------------------------------------------------------------------- post-process [21] 100.0% [28] 658(5.6%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:119:17 append-map [36] 100.0% ----------------------------------------------------------------------- post-process [21] 45.8% run-iter! [19] 54.2% [29] 480(4.0%) 0(0.0%) localize-error ...erbie/src/core/localize.rkt:47:0 hash-ref! [88] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [30] 228(1.9%) 0(0.0%) gen-rewrites! ...ock/herbie/src/mainloop.rkt:148:0 for-loop [39] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [31] 220(1.9%) 0(0.0%) choose-best-alt! .../herbie/src/mainloop.rkt:120:0 ??? [37] 100.0% ----------------------------------------------------------------------- run-iter! [19] 100.0% [32] 208(1.8%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [37] 100.0% ----------------------------------------------------------------------- simplify! [26] 100.0% [33] 4066(34.3%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [40] 100.0% ----------------------------------------------------------------------- for-loop [34] 50.0% one-iter [25] 50.0% [34] 3158(26.6%) 646(5.5%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [34] 50.0% match-e [47] 39.8% ----------------------------------------------------------------------- one-iter [25] 100.0% [35] 1548(13.1%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [41] 100.0% ----------------------------------------------------------------------- for-loop [28] 100.0% [36] 658(5.6%) 0(0.0%) append-map ...acket/collects/racket/list.rkt:565:2 taylor-alt [42] 100.0% ----------------------------------------------------------------------- finalize-iter! [32] 48.6% choose-best-alt! [31] 51.4% [37] 428(3.6%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 atab-pick-alt8 [44] 51.4% for-loop [45] 48.6% ----------------------------------------------------------------------- f6 [27] 100.0% [38] 240(2.0%) 240(2.0%) make-keyword-procedure ...ket/private/kw.rkt:216:4 ----------------------------------------------------------------------- gen-rewrites! [30] 100.0% [39] 228(1.9%) 0(0.0%) for-loop ...tatlock/herbie/src/mainloop.rkt:153:11 ??? [43] 100.0% ----------------------------------------------------------------------- for-loop [33] 11.7% run [9] 43.7% [40] 11852(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 43.7% run-improve58 [2] 22.8% loop [46] 21.7% simplify [3] 11.7% ----------------------------------------------------------------------- one-iter [25] 11.4% loop [35] 88.6% [41] 1748(14.7%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 match-e [47] 49.3% merge-egraph-nodes! [49] 37.0% loop! [57] 13.7% ----------------------------------------------------------------------- append-map [36] 100.0% [42] 658(5.6%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [48] 100.0% ----------------------------------------------------------------------- for-loop [39] 100.0% [43] 228(1.9%) 0(0.0%) ??? /home/ztatlock/herbie/src/alternative.rkt:90:0 rewriter [50] 100.0% ----------------------------------------------------------------------- ??? [37] 100.0% [44] 220(1.9%) 0(0.0%) atab-pick-alt8 ...rbie/src/core/alt-table.rkt:54:0 ??? [51] 100.0% ----------------------------------------------------------------------- ??? [37] 100.0% [45] 208(1.8%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [52] 100.0% ----------------------------------------------------------------------- ??? [40] 100.0% [46] 5152(43.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [62] 54.3% loop [53] 45.7% ----------------------------------------------------------------------- for-loop [64] 13.9% apply-match [41] 16.0% for-loop [34] 70.1% [47] 3374(28.5%) 2130(18.0%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [54] 32.3% for-loop [64] 9.0% constant? [59] 2.2% ----------------------------------------------------------------------- taylor-alt [42] 100.0% [48] 658(5.6%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [55] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 15.6% apply-match [41] 84.4% [49] 646(5.5%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 update-leader! [56] 53.1% loop! [57] 31.3% merge-egraph-nodes! [49] 15.6% ----------------------------------------------------------------------- ??? [43] 100.0% [50] 228(1.9%) 0(0.0%) rewriter ...lock/herbie/src/core/matcher.rkt:123:2 for-loop [58] 100.0% ----------------------------------------------------------------------- atab-pick-alt8 [44] 100.0% [51] 220(1.9%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:369:33 best-alt [60] 100.0% ----------------------------------------------------------------------- for-loop [45] 100.0% [52] 208(1.8%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [61] 100.0% ----------------------------------------------------------------------- loop [46] 100.0% [53] 2354(19.9%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [63] 72.0% make-exacts* [62] 28.0% ----------------------------------------------------------------------- match-e [47] 100.0% [54] 1284(10.8%) 602(5.1%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [64] 43.8% loop [77] 17.1% ----------------------------------------------------------------------- location-do [55] 24.3% for-loop [48] 75.7% [55] 658(5.6%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 approximate9 [65] 75.7% location-do [55] 24.3% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 100.0% [56] 444(3.7%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [66] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [49] 45.7% apply-match [41] 54.3% [57] 442(3.7%) 0(0.0%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 custom-set-union [67] 100.0% ----------------------------------------------------------------------- rewriter [50] 100.0% [58] 228(1.9%) 0(0.0%) for-loop ...ock/herbie/src/core/matcher.rkt:126:10 matcher [68] 100.0% ----------------------------------------------------------------------- match-e [47] 100.0% [59] 220(1.9%) 220(1.9%) constant? ...ck/herbie/src/syntax/syntax.rkt:221:0 ----------------------------------------------------------------------- ??? [51] 100.0% [60] 220(1.9%) 0(0.0%) best-alt /home/ztatlock/herbie/src/glue.rkt:79:0 argmins [69] 100.0% ----------------------------------------------------------------------- atab-add-altn [52] 100.0% [61] 208(1.8%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 for-loop [70] 100.0% ----------------------------------------------------------------------- loop [53] 19.1% loop [46] 80.9% [62] 3458(29.2%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 map [71] 54.4% loop [77] 45.6% ----------------------------------------------------------------------- loop [53] 100.0% [63] 1694(14.3%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [71] 100.0% ----------------------------------------------------------------------- match-e [47] 37.8% for-loop [54] 62.2% [64] 1064(9.0%) 202(1.7%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [47] 81.0% ----------------------------------------------------------------------- location-do [55] 100.0% [65] 658(5.6%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 loop [72] 100.0% ----------------------------------------------------------------------- update-leader! [56] 100.0% [66] 444(3.7%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [73] 100.0% ----------------------------------------------------------------------- loop! [57] 100.0% [67] 442(3.7%) 0(0.0%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [74] 100.0% ----------------------------------------------------------------------- for-loop [58] 100.0% [68] 228(1.9%) 0(0.0%) matcher ...tlock/herbie/src/core/matcher.rkt:159:2 for-loop [75] 100.0% ----------------------------------------------------------------------- best-alt [60] 100.0% [69] 220(1.9%) 0(0.0%) argmins /home/ztatlock/herbie/src/common.rkt:85:0 composed [76] 100.0% ----------------------------------------------------------------------- best-and-tied-at-points [61] 100.0% [70] 208(1.8%) 208(1.8%) for-loop ...k/herbie/src/core/alt-table.rkt:124:16 ----------------------------------------------------------------------- f6 [27] 11.4% loop [63] 42.0% make-exacts* [62] 46.7% [71] 4034(34.0%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [77] 88.6% ??? [82] 6.4% taylor [81] 4.9% ----------------------------------------------------------------------- approximate9 [65] 100.0% [72] 658(5.6%) 0(0.0%) loop ...e/ztatlock/herbie/src/core/taylor.rkt:82:4 hash-ref! [88] 100.0% ----------------------------------------------------------------------- for-loop [66] 100.0% [73] 444(3.7%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [78] 100.0% ----------------------------------------------------------------------- custom-set-union [67] 100.0% [74] 442(3.7%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [79] 100.0% ----------------------------------------------------------------------- matcher [68] 100.0% [75] 228(1.9%) 228(1.9%) for-loop ...lock/herbie/src/core/matcher.rkt:143:6 ----------------------------------------------------------------------- argmins [69] 100.0% [76] 220(1.9%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [80] 100.0% ----------------------------------------------------------------------- make-exacts* [62] 0.0% for-loop [54] 0.3% map [71] 0.9% post-process [21] 1.6% extract-alt [24] 3.1% parse-loop12 [5] 7.4% loop [77] 86.7% [77] 6472(54.6%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [77] 86.7% ??? [82] 7.4% simplify [3] 3.1% completely-simplify-alt [4] 1.6% ??? [87] 0.9% curried [85] 0.3% ----------------------------------------------------------------------- for-loop [73] 100.0% [78] 444(3.7%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [83] 100.0% ----------------------------------------------------------------------- for-loop [74] 100.0% [79] 442(3.7%) 442(3.7%) for-loop ...cts/racket/private/set-types.rkt:178:5 ----------------------------------------------------------------------- composed [76] 100.0% [80] 220(1.9%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [86] 100.0% ----------------------------------------------------------------------- map [71] 100.0% [81] 198(1.7%) 0(0.0%) taylor ...tatlock/herbie/src/core/taylor.rkt:157:0 debug-print [84] 100.0% ----------------------------------------------------------------------- map [71] 18.1% loop [77] 81.9% [82] 480(4.0%) 0(0.0%) ??? ...ket/collects/racket/private/list.rkt:323:18 hash-ref! [88] 100.0% ----------------------------------------------------------------------- hash-update! [78] 100.0% [83] 444(3.7%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [89] 100.0% ----------------------------------------------------------------------- taylor [81] 47.4% simplify [22] 52.6% [84] 418(3.5%) 0(0.0%) debug-print ...ztatlock/herbie/src/debug.rkt:107:0 for-loop [90] 100.0% ----------------------------------------------------------------------- loop [77] 100.0% [85] 220(1.9%) 220(1.9%) curried ...cket/collects/racket/function.rkt:71:18 ----------------------------------------------------------------------- errors [80] 100.0% [86] 220(1.9%) 0(0.0%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [87] 100.0% ----------------------------------------------------------------------- for-loop [86] 4.1% loop [77] 95.9% [87] 5372(45.3%) 220(1.9%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [91] 54.7% real->bigfloat [92] 35.9% ??? [104] 5.2% ----------------------------------------------------------------------- for-loop [17] 3.2% for-loop [16] 3.2% for-loop [14] 10.3% ??? [93] 10.3% ??? [94] 11.9% localize-error [29] 15.4% loop [72] 19.0% ??? [82] 26.8% [88] 1138(9.6%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 parse-loop12 [5] 30.8% f6 [27] 14.4% ??? [6] 13.5% ??? [94] 11.9% ??? [93] 10.3% simplify [22] 7.0% ??? [95] 5.7% ??? [8] 3.2% ??? [7] 3.2% ----------------------------------------------------------------------- ??? [83] 100.0% [89] 444(3.7%) 444(3.7%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ----------------------------------------------------------------------- debug-print [84] 100.0% [90] 418(3.5%) 418(3.5%) for-loop /home/ztatlock/herbie/src/debug.rkt:113:2 ----------------------------------------------------------------------- ??? [87] 100.0% [91] 2940(24.8%) 244(2.1%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [96] 64.3% ...higher-order.rkt:373:33 [97] 27.4% ----------------------------------------------------------------------- ??? [87] 100.0% [92] 1930(16.3%) 1410(11.9%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [103] 26.9% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [93] 460(3.9%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:42:15 hash-ref! [88] 100.0% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [94] 418(3.5%) 0(0.0%) ??? ...e/ztatlock/herbie/src/core/taylor.rkt:63:15 hash-ref! [88] 100.0% ----------------------------------------------------------------------- hash-ref! [88] 100.0% [95] 260(2.2%) 0(0.0%) ??? ...ztatlock/herbie/src/core/localize.rkt:22:13 repeat [98] 100.0% ----------------------------------------------------------------------- ??? [91] 100.0% [96] 1890(15.9%) 226(1.9%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfadd [99] 53.0% bfneg [101] 24.3% ??? [105] 10.7% ----------------------------------------------------------------------- ??? [91] 100.0% [97] 806(6.8%) 280(2.4%) ...higher-order.rkt:373:33 (unknown source) ??? [100] 65.3% ----------------------------------------------------------------------- ??? [95] 100.0% [98] 260(2.2%) 0(0.0%) repeat ...atlock/herbie/src/core/localize.rkt:13:0 for-loop [102] 100.0% ----------------------------------------------------------------------- ??? [96] 100.0% [99] 1002(8.5%) 780(6.6%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [103] 22.2% ----------------------------------------------------------------------- ...higher-order.rkt:373:33 [97]100.0% [100] 526(4.4%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [104] 100.0% ----------------------------------------------------------------------- ??? [96] 100.0% [101] 460(3.9%) 248(2.1%) bfneg ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ??? [103] 46.1% ----------------------------------------------------------------------- repeat [98] 100.0% [102] 260(2.2%) 260(2.2%) for-loop ...lock/herbie/src/core/localize.rkt:14:2 ----------------------------------------------------------------------- bfneg [101] 22.2% bfadd [99] 23.3% real->bigfloat [92] 54.5% [103] 954(8.0%) 954(8.0%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ----------------------------------------------------------------------- ??? [87] 34.9% ??? [100] 65.1% [104] 808(6.8%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [105] 100.0% ----------------------------------------------------------------------- ??? [96] 16.4% ->flonum [23] 17.9% ??? [104] 65.7% [105] 1230(10.4%) 780(6.6%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [106] 36.6% ----------------------------------------------------------------------- ??? [105] 100.0% [106] 450(3.8%) 450(3.8%) ??? ...llects/racket/contract/combinator.rkt:178:4 -----------------------------------------------------------------------