Profiling results ----------------- Total cpu time observed: 73664ms (out of 73948ms) Number of samples taken: 236 (once every 312ms) (Hiding functions with self<1.0% and local<2.0%: 4 of 108 hidden) ================================================================================ Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ================================================================================ ??? [98] 100.0% [1] 73664(100.0%) 0(0.0%) run-improve47 ...rface-bugs/src/mainloop.rkt:345:0 simplify! [10] 88.8% for-loop [5] 11.2% -------------------------------------------------------------------------------- ??? [98] 100.0% [2] 73664(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [4] 100.0% -------------------------------------------------------------------------------- ??? [30] 100.0% [3] 1318(1.8%) 0(0.0%) approximate9 ...face-bugs/src/core/taylor.rkt:12:0 for-loop [6] 52.7% loop [7] 25.2% taylor [22] 22.2% -------------------------------------------------------------------------------- profile-thunk16 [2] 100.0% [4] 73664(100.0%) 0(0.0%) run ...et-7.2/share/pkgs/profile-lib/main.rkt:39:2 ??? [98] 100.0% -------------------------------------------------------------------------------- run-improve47 [1] 100.0% [5] 8248(11.2%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:364:4 run-iter! [8] 100.0% -------------------------------------------------------------------------------- approximate9 [3] 100.0% [6] 694(0.9%) 0(0.0%) for-loop ...terface-bugs/src/core/taylor.rkt:30:18 taylor [22] 100.0% -------------------------------------------------------------------------------- approximate9 [3] 100.0% [7] 332(0.5%) 0(0.0%) loop ...ix-interface-bugs/src/core/taylor.rkt:87:4 hash-ref! [9] 100.0% -------------------------------------------------------------------------------- for-loop [5] 100.0% [8] 8248(11.2%) 0(0.0%) run-iter! ...interface-bugs/src/mainloop.rkt:326:0 simplify! [10] 76.2% gen-series! [11] 16.0% finalize-iter! [13] 4.0% localize! [14] 3.9% -------------------------------------------------------------------------------- ??? [30] 25.5% loop [7] 25.5% localize-error [19] 48.9% [9] 650(0.9%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 parse-loop30 [15] 48.9% ??? [12] 25.5% taylor [22] 25.5% -------------------------------------------------------------------------------- run-iter! [8] 8.8% run-improve47 [1] 91.2% [10] 71702(97.3%) 0(0.0%) simplify! ...interface-bugs/src/mainloop.rkt:223:0 ??? [16] 100.0% -------------------------------------------------------------------------------- run-iter! [8] 100.0% [11] 1318(1.8%) 0(0.0%) gen-series! ...terface-bugs/src/mainloop.rkt:159:0 for-loop [17] 100.0% -------------------------------------------------------------------------------- hash-ref! [9] 100.0% [12] 332(0.5%) 0(0.0%) ??? ...ix-interface-bugs/src/core/taylor.rkt:68:15 ??? [30] 100.0% -------------------------------------------------------------------------------- run-iter! [8] 100.0% [13] 326(0.4%) 0(0.0%) finalize-iter! ...face-bugs/src/mainloop.rkt:277:0 ??? [86] 100.0% -------------------------------------------------------------------------------- run-iter! [8] 100.0% [14] 318(0.4%) 0(0.0%) localize! ...interface-bugs/src/mainloop.rkt:126:0 localize-error [19] 100.0% -------------------------------------------------------------------------------- hash-ref! [9] 100.0% [15] 318(0.4%) 0(0.0%) parse-loop30 ...s/racket/match/compiler.rkt:418:15 map [18] 100.0% -------------------------------------------------------------------------------- simplify! [10] 100.0% [16] 71702(97.3%) 0(0.0%) ??? ...x-interface-bugs/src/core/simplify.rkt:26:0 for-loop [20] 98.7% one-iter [24] 0.5% loop [56] 0.4% loop [23] 0.4% -------------------------------------------------------------------------------- gen-series! [11] 100.0% [17] 1318(1.8%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:166:7 taylor-alt [21] 100.0% -------------------------------------------------------------------------------- parse-loop30 [15] 31.4% taylor [22] 68.6% [18] 1012(1.4%) 0(0.0%) map ...t-7.2/collects/racket/private/map.rkt:35:13 taylor [22] 68.6% loop [56] 31.4% -------------------------------------------------------------------------------- localize! [14] 100.0% [19] 318(0.4%) 0(0.0%) localize-error ...-bugs/src/core/localize.rkt:64:0 hash-ref! [9] 100.0% -------------------------------------------------------------------------------- ??? [16] 100.0% [20] 70752(96.0%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:35:2 one-iter [24] 100.0% -------------------------------------------------------------------------------- for-loop [17] 100.0% [21] 1318(1.8%) 0(0.0%) taylor-alt ...nterface-bugs/src/mainloop.rkt:145:0 for-loop [25] 100.0% -------------------------------------------------------------------------------- approximate9 [3] 5.5% map [18] 20.1% for-loop [6] 20.1% hash-ref! [9] 25.2% taylor [22] 29.1% [22] 1318(1.8%) 366(0.5%) taylor ...interface-bugs/src/core/taylor.rkt:170:0 taylor [22] 29.1% debug-print [82] 25.2% map [18] 20.1% loop [56] 6.2% ??? [27] 5.5% -------------------------------------------------------------------------------- ??? [16] 100.0% [23] 300(0.4%) 0(0.0%) loop ...nterface-bugs/src/core/extraction.rkt:25:2 for-loop [26] 100.0% -------------------------------------------------------------------------------- ??? [16] 0.5% for-loop [20] 99.5% [24] 71100(96.5%) 0(0.0%) one-iter ...erface-bugs/src/core/simplify.rkt:72:0 for-loop [28] 74.0% find-matches [29] 23.8% for-loop [31] 1.4% for-loop [32] 0.8% -------------------------------------------------------------------------------- taylor-alt [21] 100.0% [25] 1318(1.8%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:151:6 ??? [30] 100.0% -------------------------------------------------------------------------------- loop [23] 100.0% [26] 300(0.4%) 0(0.0%) for-loop ...face-bugs/src/core/extraction.rkt:29:4 for-loop [33] 100.0% -------------------------------------------------------------------------------- taylor [22] 100.0% [27] 292(0.4%) 0(0.0%) ??? ...face-bugs/src/function-definitions.rkt:46:2 ??? [30] 100.0% -------------------------------------------------------------------------------- one-iter [24] 100.0% [28] 52604(71.4%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:74:2 for-loop [34] 100.0% -------------------------------------------------------------------------------- one-iter [24] 100.0% [29] 16936(23.0%) 0(0.0%) find-matches ...ce-bugs/src/core/simplify.rkt:62:0 for-loop [35] 100.0% -------------------------------------------------------------------------------- ??? [30] 5.5% ??? [27] 5.5% ??? [12] 8.4% location-do [36] 40.3% for-loop [25] 40.3% [30] 1318(1.8%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:360:33 location-do [36] 40.3% approximate9 [3] 40.3% hash-ref! [9] 8.4% ??? [30] 5.5% ??? [38] 5.5% -------------------------------------------------------------------------------- one-iter [24] 100.0% [31] 960(1.3%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:84:2 update-leader! [47] 100.0% -------------------------------------------------------------------------------- one-iter [24] 100.0% [32] 600(0.8%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:81:2 set-precompute! [37] 100.0% -------------------------------------------------------------------------------- for-loop [26] 100.0% [33] 300(0.4%) 300(0.4%) for-loop ...ace-bugs/src/core/extraction.rkt:37:16 -------------------------------------------------------------------------------- for-loop [28] 100.0% [34] 52604(71.4%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:77:4 merge-egraph-nodes! [39] 53.7% dedup-children! [55] 34.4% pattern-substitute [41] 9.4% mk-enode-rec! [42] 2.4% -------------------------------------------------------------------------------- for-loop [35] 50.0% find-matches [29] 50.0% [35] 16936(23.0%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:64:8 for-loop [35] 50.0% match-e [40] 50.0% -------------------------------------------------------------------------------- location-do [36] 48.5% ??? [30] 51.5% [36] 1318(1.8%) 0(0.0%) location-do ...nterface-bugs/src/programs.rkt:64:0 ??? [30] 51.5% location-do [36] 48.5% -------------------------------------------------------------------------------- for-loop [32] 100.0% [37] 600(0.8%) 0(0.0%) set-precompute! ...bugs/src/core/simplify.rkt:88:0 for-loop [43] 100.0% -------------------------------------------------------------------------------- ??? [30] 100.0% [38] 292(0.4%) 0(0.0%) ??? ...x-interface-bugs/src/core/matcher.rkt:66:17 for-loop [44] 100.0% -------------------------------------------------------------------------------- merge-egraph-nodes! [39] 1.9% for-loop [48] 2.8% for-loop [34] 95.3% [39] 28268(38.4%) 0(0.0%) merge-egraph-nodes! ...s/src/core/egraph.rkt:145:0 loop! [45] 77.3% update-leader! [47] 14.5% for-loop [48] 4.0% dedup-children! [55] 2.4% merge-egraph-nodes! [39] 1.9% -------------------------------------------------------------------------------- for-loop [57] 33.0% for-loop [35] 67.0% [40] 16936(23.0%) 3100(4.2%) match-e ...interface-bugs/src/core/ematch.rkt:39:0 for-loop [46] 81.8% ??? [86] 3.0% variable? [49] 2.1% constant? [53] 0.9% -------------------------------------------------------------------------------- pattern-substitute [41] 32.8% for-loop [34] 67.2% [41] 4962(6.7%) 1494(2.0%) pattern-substitute ...gs/src/core/matcher.rkt:46:0 pattern-substitute [41] 32.8% do-curry [61] 13.7% return/no-unsupplied [103] 9.6% ??? [86] 8.0% ??? [50] 6.7% variable? [49] 5.1% -------------------------------------------------------------------------------- loop [56] 11.8% for-loop [34] 88.2% [42] 1266(1.7%) 298(0.4%) mk-enode-rec! ...ce-bugs/src/core/egraph.rkt:117:0 hash-has-key? [51] 49.9% loop [56] 38.3% -------------------------------------------------------------------------------- set-precompute! [37] 100.0% [43] 600(0.8%) 300(0.4%) for-loop ...erface-bugs/src/core/simplify.rkt:90:2 setfindf [52] 50.0% -------------------------------------------------------------------------------- ??? [38] 100.0% [44] 292(0.4%) 0(0.0%) for-loop ...terface-bugs/src/core/matcher.rkt:42:9 for-loop [54] 100.0% -------------------------------------------------------------------------------- loop [56] 25.9% merge-egraph-nodes! [39] 74.1% [45] 22532(30.6%) 6028(8.2%) loop! ...x-interface-bugs/src/core/enode.rkt:194:2 custom-set-union [58] 44.8% loop [56] 31.3% set [60] 8.5% update-en-expr [93] 2.1% -------------------------------------------------------------------------------- match-e [40] 100.0% [46] 16012(21.7%) 6192(8.4%) for-loop ...terface-bugs/src/core/ematch.rkt:52:11 for-loop [57] 52.1% loop [56] 7.7% do-curry [61] 4.9% procedure-reduce-keyword-arity-mask [63] 2.9% foldl [72] 2.9% step [71] 0.9% -------------------------------------------------------------------------------- for-loop [31] 17.9% merge-egraph-nodes! [39] 82.1% [47] 5370(7.3%) 0(0.0%) update-leader! ...e-bugs/src/core/egraph.rkt:213:0 for-loop [59] 100.0% -------------------------------------------------------------------------------- merge-egraph-nodes! [39] 100.0% [48] 1912(2.6%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:199:4 merge-egraph-nodes! [39] 82.7% dedup-children! [55] 17.3% -------------------------------------------------------------------------------- pattern-substitute [41] 40.2% match-e [40] 59.8% [49] 1504(2.0%) 0(0.0%) variable? ...face-bugs/src/syntax/syntax.rkt:729:0 ??? [86] 80.1% value? [64] 19.9% -------------------------------------------------------------------------------- pattern-substitute [41] 100.0% [50] 662(0.9%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:772:8 dict? [62] 100.0% -------------------------------------------------------------------------------- mk-enode-rec! [42] 100.0% [51] 632(0.9%) 632(0.9%) hash-has-key? ...ket/private/more-scheme.rkt:371:2 -------------------------------------------------------------------------------- for-loop [43] 100.0% [52] 300(0.4%) 300(0.4%) setfindf ...ix-interface-bugs/src/common.rkt:142:0 -------------------------------------------------------------------------------- match-e [40] 100.0% [53] 300(0.4%) 0(0.0%) constant? ...face-bugs/src/syntax/syntax.rkt:726:0 value? [64] 100.0% -------------------------------------------------------------------------------- for-loop [44] 100.0% [54] 292(0.4%) 0(0.0%) for-loop ...terface-bugs/src/core/matcher.rkt:27:9 fallback-update [65] 100.0% -------------------------------------------------------------------------------- for-loop [48] 1.7% merge-egraph-nodes! [39] 5.1% for-loop [34] 93.2% [55] 19434(26.4%) 0(0.0%) dedup-children! ...e-bugs/src/core/enode.rkt:202:0 loop [66] 51.2% loop [67] 48.8% -------------------------------------------------------------------------------- ??? [16] 1.9% map [18] 2.0% taylor [22] 2.1% for-loop [46] 2.8% mk-enode-rec! [42] 4.0% loop! [45] 24.5% loop [56] 62.7% [56] 15708(21.3%) 1498(2.0%) loop ...-7.2/collects/racket/private/map.rkt:40:19 loop [56] 62.7% loop! [45] 22.0% step [71] 2.5% ??? [74] 2.1% simplify [75] 2.1% ??? [76] 2.0% mk-enode-rec! [42] 1.9% foldl [72] 0.2% -------------------------------------------------------------------------------- for-loop [46] 100.0% [57] 11074(15.0%) 0(0.0%) for-loop ...terface-bugs/src/core/ematch.rkt:58:37 match-e [40] 94.6% ??? [73] 5.4% -------------------------------------------------------------------------------- loop! [45] 100.0% [58] 10538(14.3%) 3646(4.9%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [68] 53.8% for-loop [70] 11.6% -------------------------------------------------------------------------------- update-leader! [47] 100.0% [59] 5370(7.3%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:218:6 hash-update! [78] 52.5% for-loop [69] 47.5% -------------------------------------------------------------------------------- loop! [45] 100.0% [60] 3808(5.2%) 3808(5.2%) set ...collects/racket/private/set-types.rkt:981:0 -------------------------------------------------------------------------------- pattern-substitute [41] 41.9% for-loop [46] 58.1% [61] 1620(2.2%) 1620(2.2%) do-curry ...-7.2/collects/racket/function.rkt:71:2 -------------------------------------------------------------------------------- ??? [50] 100.0% [62] 662(0.9%) 662(0.9%) dict? ...ollects/racket/private/generic.rkt:146:11 -------------------------------------------------------------------------------- for-loop [46] 100.0% [63] 628(0.9%) 628(0.9%) procedure-reduce-keyword-arity-mask ....rkt:1562:4 -------------------------------------------------------------------------------- constant? [53] 50.0% variable? [49] 50.0% [64] 600(0.8%) 600(0.8%) value? ...interface-bugs/src/syntax/types.rkt:18:0 -------------------------------------------------------------------------------- for-loop [54] 100.0% [65] 292(0.4%) 292(0.4%) fallback-update ...s/racket/private/dict.rkt:115:2 -------------------------------------------------------------------------------- dedup-children! [55] 18.8% loop [66] 81.2% [66] 9948(13.5%) 600(0.8%) loop ...racket-7.2/collects/racket/list.rkt:417:34 loop [66] 81.2% loop [77] 10.2% member [80] 7.7% -------------------------------------------------------------------------------- dedup-children! [55] 12.1% loop [67] 87.9% [67] 9486(12.9%) 9486(12.9%) loop ...racket-7.2/collects/racket/list.rkt:434:17 loop [67] 87.9% -------------------------------------------------------------------------------- custom-set-union [58] 100.0% [68] 5666(7.7%) 918(1.2%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [79] 83.8% -------------------------------------------------------------------------------- for-loop [59] 100.0% [69] 2552(3.5%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:219:8 hash-update! [78] 100.0% -------------------------------------------------------------------------------- custom-set-union [58] 100.0% [70] 1226(1.7%) 1226(1.7%) for-loop ...cts/racket/private/set-types.rkt:152:2 -------------------------------------------------------------------------------- for-loop [46] 31.9% loop [56] 68.1% [71] 934(1.3%) 934(1.3%) step ...ket-7.2/collects/racket/function.rkt:145:9 -------------------------------------------------------------------------------- loop [56] 32.8% for-loop [46] 67.2% [72] 920(1.2%) 0(0.0%) foldl ....2/collects/racket/private/list.rkt:229:4 merge2 [81] 100.0% -------------------------------------------------------------------------------- for-loop [57] 100.0% [73] 598(0.8%) 300(0.4%) ??? ...fix-interface-bugs/src/core/ematch.rkt:43:5 for-loop [84] 49.8% -------------------------------------------------------------------------------- loop [56] 100.0% [74] 336(0.5%) 336(0.5%) ??? ...cket-7.2/collects/racket/function.rkt:93:12 -------------------------------------------------------------------------------- loop [56] 100.0% [75] 328(0.4%) 0(0.0%) simplify ...nterface-bugs/src/core/reduce.rkt:16:0 debug-print [82] 100.0% -------------------------------------------------------------------------------- loop [56] 100.0% [76] 318(0.4%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:39:12 bfadd [83] 100.0% -------------------------------------------------------------------------------- loop [66] 100.0% [77] 6546(8.9%) 6546(8.9%) loop (unknown source) -------------------------------------------------------------------------------- for-loop [69] 47.5% for-loop [59] 52.5% [78] 5370(7.3%) 0(0.0%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [85] 100.0% -------------------------------------------------------------------------------- for-loop [68] 100.0% [79] 4748(6.4%) 4748(6.4%) for-loop ...cts/racket/private/set-types.rkt:178:5 -------------------------------------------------------------------------------- loop [66] 100.0% [80] 2802(3.8%) 2802(3.8%) member (unknown source) -------------------------------------------------------------------------------- foldl [72] 100.0% [81] 920(1.2%) 920(1.2%) merge2 ...-interface-bugs/src/core/ematch.rkt:24:0 -------------------------------------------------------------------------------- simplify [75] 49.7% taylor [22] 50.3% [82] 660(0.9%) 0(0.0%) debug-print ...-interface-bugs/src/debug.rkt:110:0 for-loop [87] 50.3% ??? [88] 49.7% -------------------------------------------------------------------------------- ??? [76] 100.0% [83] 318(0.4%) 0(0.0%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:821:4 ??? [89] 100.0% -------------------------------------------------------------------------------- ??? [73] 100.0% [84] 298(0.4%) 0(0.0%) for-loop ...nterface-bugs/src/core/ematch.rkt:44:7 ??? [86] 100.0% -------------------------------------------------------------------------------- hash-update! [78] 100.0% [85] 5370(7.3%) 300(0.4%) ??? ...x-interface-bugs/src/core/egraph.rkt:221:24 for-loop [90] 94.4% -------------------------------------------------------------------------------- for-loop [84] 7.5% finalize-iter! [13] 8.2% pattern-substitute [41] 22.7% variable? [49] 30.5% match-e [40] 31.1% [86] 3954(5.4%) 3628(4.9%) ??? ...contract/private/arrow-val-first.rkt:390:18 for-loop [92] 8.2% -------------------------------------------------------------------------------- debug-print [82] 100.0% [87] 332(0.5%) 332(0.5%) for-loop ...fix-interface-bugs/src/debug.rkt:116:2 -------------------------------------------------------------------------------- debug-print [82] 100.0% [88] 328(0.4%) 0(0.0%) ??? .../contract/private/arrow-val-first.rkt:430:3 mk-call [91] 100.0% -------------------------------------------------------------------------------- bfadd [83] 100.0% [89] 318(0.4%) 318(0.4%) ??? /opt/racket-7.2/collects/ffi/unsafe.rkt:905:4 -------------------------------------------------------------------------------- ??? [85] 100.0% [90] 5070(6.9%) 4764(6.5%) for-loop ...erface-bugs/src/core/egraph.rkt:222:26 update-en-expr [93] 6.0% -------------------------------------------------------------------------------- ??? [88] 100.0% [91] 328(0.4%) 0(0.0%) mk-call ...tract/private/arrow-val-first.rkt:433:5 loop [94] 100.0% -------------------------------------------------------------------------------- ??? [86] 100.0% [92] 326(0.4%) 0(0.0%) for-loop ...rface-bugs/src/core/alt-table.rkt:55:2 errors [95] 100.0% -------------------------------------------------------------------------------- for-loop [90] 24.2% loop! [45] 75.8% [93] 1266(1.7%) 1266(1.7%) update-en-expr ...e-bugs/src/core/egraph.rkt:207:0 -------------------------------------------------------------------------------- mk-call [91] 100.0% [94] 328(0.4%) 0(0.0%) loop ...contract/private/arrow-val-first.rkt:437:8 ??? [96] 100.0% -------------------------------------------------------------------------------- for-loop [92] 100.0% [95] 326(0.4%) 0(0.0%) errors .../fix-interface-bugs/src/points.rkt:216:0 for-loop [97] 100.0% -------------------------------------------------------------------------------- loop [94] 100.0% [96] 328(0.4%) 0(0.0%) ??? ...ects/racket/contract/private/prop.rkt:541:4 ??? [99] 100.0% -------------------------------------------------------------------------------- errors [95] 100.0% [97] 326(0.4%) 0(0.0%) for-loop ...ix-interface-bugs/src/points.rkt:218:2 ??? [98] 100.0% -------------------------------------------------------------------------------- for-loop [97] 0.1% run [4] 49.9% [98] 73664(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [2] 49.9% run-improve47 [1] 49.9% ??? [100] 0.1% -------------------------------------------------------------------------------- ??? [96] 100.0% [99] 328(0.4%) 328(0.4%) ??? ...ects/racket/contract/private/list.rkt:681:0 -------------------------------------------------------------------------------- ??? [98] 100.0% [100] 326(0.4%) 0(0.0%) ??? ...e/fix-interface-bugs/src/programs.rkt:115:2 ??? [101] 100.0% -------------------------------------------------------------------------------- ??? [100] 100.0% [101] 326(0.4%) 0(0.0%) ??? ...t-7.2/collects/racket/private/kw.rkt:594:14 ??? [102] 100.0% -------------------------------------------------------------------------------- ??? [101] 100.0% [102] 326(0.4%) 0(0.0%) ??? ...interface-bugs/src/syntax/syntax.rkt:214:17 return/no-unsupplied [103] 100.0% -------------------------------------------------------------------------------- ??? [102] 34.2% pattern-substitute [41] 65.8% [103] 954(1.3%) 628(0.9%) return/no-unsupplied ...ct/private/arr-i.rkt:542:0 filter [104] 34.2% -------------------------------------------------------------------------------- return/no-unsupplied [103] 100.0% [104] 326(0.4%) 326(0.4%) filter ...2/collects/racket/private/list.rkt:256:2 --------------------------------------------------------------------------------