Profiling results ----------------- Total cpu time observed: 32654ms (out of 33112ms) Number of samples taken: 137 (once every 238ms) (Hiding functions with self<1.0% and local<2.0%: 2 of 110 hidden) ================================================================================ Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ================================================================================ ??? [38] 100.0% [1] 32654(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% -------------------------------------------------------------------------------- ??? [38] 100.0% [2] 25814(79.1%) 0(0.0%) run-improve47 ...bie/master/src/mainloop.rkt:345:0 for-loop [6] 100.0% -------------------------------------------------------------------------------- ??? [92] 100.0% [3] 240(0.7%) 0(0.0%) approximate9 ...ie/master/src/core/taylor.rkt:12:0 loop [7] 100.0% -------------------------------------------------------------------------------- hash-ref! [10] 100.0% [4] 240(0.7%) 0(0.0%) ??? ...es/herbie/master/src/core/taylor.rkt:291:26 for-loop [8] 100.0% -------------------------------------------------------------------------------- profile-thunk16 [1] 100.0% [5] 32654(100.0%) 0(0.0%) run ...et-7.2/share/pkgs/profile-lib/main.rkt:39:2 ??? [38] 100.0% -------------------------------------------------------------------------------- run-improve47 [2] 100.0% [6] 25814(79.1%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:364:4 run-iter! [9] 100.0% -------------------------------------------------------------------------------- approximate9 [3] 100.0% [7] 240(0.7%) 0(0.0%) loop ...ies/herbie/master/src/core/taylor.rkt:87:4 hash-ref! [10] 100.0% -------------------------------------------------------------------------------- ??? [4] 100.0% [8] 240(0.7%) 0(0.0%) for-loop ...rbie/master/src/core/taylor.rkt:291:52 hash-ref! [10] 100.0% -------------------------------------------------------------------------------- for-loop [6] 100.0% [9] 25814(79.1%) 0(0.0%) run-iter! .../herbie/master/src/mainloop.rkt:326:0 simplify! [11] 98.2% gen-series! [15] 0.9% finalize-iter! [16] 0.8% -------------------------------------------------------------------------------- for-loop [8] 25.0% ??? [13] 25.0% ??? [92] 25.0% loop [7] 25.0% [10] 240(0.7%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 ??? [14] 25.0% ??? [13] 25.0% ??? [4] 25.0% simplify [12] 25.0% -------------------------------------------------------------------------------- run-iter! [9] 100.0% [11] 25356(77.7%) 0(0.0%) simplify! .../herbie/master/src/mainloop.rkt:223:0 ??? [17] 100.0% -------------------------------------------------------------------------------- hash-ref! [10] 100.0% [12] 240(0.7%) 0(0.0%) simplify ...herbie/master/src/core/reduce.rkt:16:0 parse-loop80 [18] 100.0% -------------------------------------------------------------------------------- hash-ref! [10] 100.0% [13] 240(0.7%) 0(0.0%) ??? ...ies/herbie/master/src/core/taylor.rkt:45:15 hash-ref! [10] 100.0% -------------------------------------------------------------------------------- hash-ref! [10] 100.0% [14] 240(0.7%) 0(0.0%) ??? ...ies/herbie/master/src/core/taylor.rkt:68:15 ??? [92] 100.0% -------------------------------------------------------------------------------- run-iter! [9] 100.0% [15] 240(0.7%) 0(0.0%) gen-series! ...erbie/master/src/mainloop.rkt:159:0 for-loop [19] 100.0% -------------------------------------------------------------------------------- run-iter! [9] 100.0% [16] 218(0.7%) 0(0.0%) finalize-iter! ...ie/master/src/mainloop.rkt:277:0 ??? [56] 100.0% -------------------------------------------------------------------------------- simplify! [11] 100.0% [17] 25356(77.7%) 0(0.0%) ??? ...es/herbie/master/src/core/simplify.rkt:26:0 for-loop [20] 99.0% one-iter [22] 1.0% -------------------------------------------------------------------------------- simplify [12] 100.0% [18] 240(0.7%) 240(0.7%) parse-loop80 ...s/racket/match/compiler.rkt:418:15 -------------------------------------------------------------------------------- gen-series! [15] 100.0% [19] 240(0.7%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:166:7 taylor-alt [21] 100.0% -------------------------------------------------------------------------------- ??? [17] 100.0% [20] 25110(76.9%) 0(0.0%) for-loop ...rbie/master/src/core/simplify.rkt:35:2 one-iter [22] 99.3% loop [24] 0.7% -------------------------------------------------------------------------------- for-loop [19] 100.0% [21] 240(0.7%) 0(0.0%) taylor-alt ...herbie/master/src/mainloop.rkt:145:0 for-loop [23] 100.0% -------------------------------------------------------------------------------- ??? [17] 1.0% for-loop [20] 99.0% [22] 25188(77.1%) 0(0.0%) one-iter ...rbie/master/src/core/simplify.rkt:72:0 for-loop [25] 72.2% find-matches [26] 26.2% for-loop [27] 1.6% -------------------------------------------------------------------------------- taylor-alt [21] 100.0% [23] 240(0.7%) 0(0.0%) for-loop ...s/herbie/master/src/mainloop.rkt:151:6 ??? [92] 100.0% -------------------------------------------------------------------------------- for-loop [20] 100.0% [24] 168(0.5%) 0(0.0%) loop ...herbie/master/src/core/extraction.rkt:25:2 for-loop [28] 100.0% -------------------------------------------------------------------------------- one-iter [22] 100.0% [25] 18178(55.7%) 0(0.0%) for-loop ...rbie/master/src/core/simplify.rkt:74:2 for-loop [29] 100.0% -------------------------------------------------------------------------------- one-iter [22] 100.0% [26] 6604(20.2%) 0(0.0%) find-matches .../master/src/core/simplify.rkt:62:0 for-loop [30] 100.0% -------------------------------------------------------------------------------- one-iter [22] 100.0% [27] 406(1.2%) 0(0.0%) for-loop ...rbie/master/src/core/simplify.rkt:81:2 set-precompute! [31] 100.0% -------------------------------------------------------------------------------- loop [24] 100.0% [28] 168(0.5%) 0(0.0%) for-loop ...ie/master/src/core/extraction.rkt:29:4 for-loop [32] 100.0% -------------------------------------------------------------------------------- for-loop [25] 100.0% [29] 18178(55.7%) 206(0.6%) for-loop ...rbie/master/src/core/simplify.rkt:77:4 merge-egraph-nodes! [33] 69.4% dedup-children! [48] 24.6% mk-enode-rec! [35] 2.5% pattern-substitute [36] 2.4% -------------------------------------------------------------------------------- for-loop [30] 50.0% find-matches [26] 50.0% [30] 6604(20.2%) 0(0.0%) for-loop ...rbie/master/src/core/simplify.rkt:64:8 for-loop [30] 50.0% match-e [34] 50.0% -------------------------------------------------------------------------------- for-loop [27] 100.0% [31] 406(1.2%) 0(0.0%) set-precompute! ...ster/src/core/simplify.rkt:88:0 for-loop [37] 100.0% -------------------------------------------------------------------------------- for-loop [28] 100.0% [32] 168(0.5%) 168(0.5%) for-loop ...e/master/src/core/extraction.rkt:37:16 -------------------------------------------------------------------------------- merge-egraph-nodes! [33] 2.6% for-loop [42] 10.0% for-loop [29] 87.4% [33] 12616(38.6%) 0(0.0%) merge-egraph-nodes! ...r/src/core/egraph.rkt:145:0 loop! [41] 40.7% update-leader! [40] 38.0% for-loop [42] 13.8% dedup-children! [48] 4.9% merge-egraph-nodes! [33] 2.6% -------------------------------------------------------------------------------- for-loop [53] 27.7% for-loop [30] 72.3% [34] 6604(20.2%) 954(2.9%) match-e .../herbie/master/src/core/ematch.rkt:39:0 for-loop [39] 75.4% constant? [43] 7.4% variable? [44] 2.4% ??? [56] 1.9% -------------------------------------------------------------------------------- for-loop [29] 100.0% [35] 452(1.4%) 0(0.0%) mk-enode-rec! .../master/src/core/egraph.rkt:117:0 for-loop [45] 54.4% new-enode [46] 45.6% -------------------------------------------------------------------------------- pattern-substitute [36] 25.7% for-loop [29] 74.3% [36] 432(1.3%) 0(0.0%) pattern-substitute ...er/src/core/matcher.rkt:46:0 constant? [43] 48.6% pattern-substitute [36] 25.7% do-curry [58] 25.7% -------------------------------------------------------------------------------- set-precompute! [31] 100.0% [37] 406(1.2%) 0(0.0%) for-loop ...rbie/master/src/core/simplify.rkt:90:2 ??? [38] 59.6% setfindf [47] 40.4% -------------------------------------------------------------------------------- for-loop [88] 0.2% for-loop [37] 0.2% run [5] 49.8% [38] 32654(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [1] 49.8% run-improve47 [2] 39.3% prepare-points-intervals [49] 8.7% errors [84] 1.5% eval-errors [60] 0.4% eval-const-expr [59] 0.2% ??? [83] 0.2% -------------------------------------------------------------------------------- match-e [34] 100.0% [39] 5542(17.0%) 1932(5.9%) for-loop ...erbie/master/src/core/ematch.rkt:52:11 for-loop [53] 43.1% loop [52] 13.1% procedure-reduce-keyword-arity-mask [57] 8.0% foldl [68] 4.4% step [69] 3.0% do-curry [58] 1.6% -------------------------------------------------------------------------------- merge-egraph-nodes! [33] 100.0% [40] 5538(17.0%) 0(0.0%) update-leader! ...master/src/core/egraph.rkt:213:0 for-loop [50] 100.0% -------------------------------------------------------------------------------- loop [52] 24.9% merge-egraph-nodes! [33] 75.1% [41] 5524(16.9%) 622(1.9%) loop! ...es/herbie/master/src/core/enode.rkt:194:2 custom-set-union [51] 57.6% loop [52] 24.9% set [55] 9.1% update-en-expr [97] 3.3% -------------------------------------------------------------------------------- merge-egraph-nodes! [33] 100.0% [42] 3010(9.2%) 0(0.0%) for-loop ...erbie/master/src/core/egraph.rkt:199:4 merge-egraph-nodes! [33] 84.2% dedup-children! [48] 15.8% -------------------------------------------------------------------------------- pattern-substitute [36] 18.4% match-e [34] 81.6% [43] 1140(3.5%) 162(0.5%) constant? ...ie/master/src/syntax/syntax.rkt:726:0 value? [54] 85.8% -------------------------------------------------------------------------------- match-e [34] 100.0% [44] 482(1.5%) 0(0.0%) variable? ...ie/master/src/syntax/syntax.rkt:729:0 ??? [56] 56.8% value? [54] 43.2% -------------------------------------------------------------------------------- mk-enode-rec! [35] 100.0% [45] 246(0.8%) 246(0.8%) for-loop ...rbie/master/src/core/egraph.rkt:109:10 -------------------------------------------------------------------------------- mk-enode-rec! [35] 100.0% [46] 206(0.6%) 0(0.0%) new-enode ...erbie/master/src/core/enode.rkt:101:0 check-valid-enode5 [61] 100.0% -------------------------------------------------------------------------------- for-loop [37] 100.0% [47] 164(0.5%) 0(0.0%) setfindf ...ies/herbie/master/src/common.rkt:142:0 for-loop [62] 100.0% -------------------------------------------------------------------------------- for-loop [42] 7.9% merge-egraph-nodes! [33] 17.9% for-loop [29] 74.2% [48] 6026(18.5%) 0(0.0%) dedup-children! ...master/src/core/enode.rkt:202:0 loop [64] 85.9% loop [67] 14.1% -------------------------------------------------------------------------------- ??? [38] 100.0% [49] 5652(17.3%) 0(0.0%) prepare-points-intervals ...r/src/points.rkt:110:0 loop [63] 100.0% -------------------------------------------------------------------------------- update-leader! [40] 100.0% [50] 5538(17.0%) 214(0.7%) for-loop ...erbie/master/src/core/egraph.rkt:218:6 for-loop [65] 55.4% hash-update! [82] 40.7% -------------------------------------------------------------------------------- loop! [41] 100.0% [51] 3456(10.6%) 1598(4.9%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [66] 46.8% for-loop [71] 6.9% -------------------------------------------------------------------------------- for-loop [39] 1.7% loop! [41] 17.5% loop [52] 80.8% [52] 3266(10.0%) 0(0.0%) loop ...-7.2/collects/racket/private/map.rkt:40:19 loop [52] 80.8% loop! [41] 17.5% foldl [68] 0.2% step [69] 0.1% -------------------------------------------------------------------------------- for-loop [39] 100.0% [53] 3224(9.9%) 0(0.0%) for-loop ...erbie/master/src/core/ematch.rkt:58:37 match-e [34] 100.0% -------------------------------------------------------------------------------- variable? [44] 17.5% constant? [43] 82.5% [54] 1186(3.6%) 1186(3.6%) value? .../herbie/master/src/syntax/types.rkt:18:0 -------------------------------------------------------------------------------- loop! [41] 100.0% [55] 1010(3.1%) 1010(3.1%) set ...collects/racket/private/set-types.rkt:981:0 -------------------------------------------------------------------------------- finalize-iter! [16] 29.3% match-e [34] 33.9% variable? [44] 36.8% [56] 744(2.3%) 526(1.6%) ??? ...contract/private/arrow-val-first.rkt:390:18 atab-add-altns [73] 29.3% -------------------------------------------------------------------------------- for-loop [39] 100.0% [57] 568(1.7%) 568(1.7%) procedure-reduce-keyword-arity-mask ....rkt:1562:4 -------------------------------------------------------------------------------- for-loop [39] 45.0% pattern-substitute [36] 55.0% [58] 404(1.2%) 404(1.2%) do-curry ...-7.2/collects/racket/function.rkt:71:2 -------------------------------------------------------------------------------- ??? [38] 100.0% [59] 242(0.7%) 0(0.0%) eval-const-expr ...e/master/src/programs.rkt:118:0 temp85_0 [70] 100.0% -------------------------------------------------------------------------------- ??? [38] 100.0% [60] 236(0.7%) 0(0.0%) eval-errors .../herbie/master/src/points.rkt:179:0 for-loop [72] 100.0% -------------------------------------------------------------------------------- new-enode [46] 100.0% [61] 206(0.6%) 206(0.6%) check-valid-enode5 ...ter/src/core/enode.rkt:211:0 -------------------------------------------------------------------------------- setfindf [47] 100.0% [62] 164(0.5%) 164(0.5%) for-loop ...ies/herbie/master/src/common.rkt:143:2 -------------------------------------------------------------------------------- prepare-points-intervals [49] 100.0% [63] 5652(17.3%) 244(0.7%) loop ...ghtlies/herbie/master/src/points.rkt:123:4 ??? [74] 55.3% loop [75] 32.3% andmap [79] 8.1% -------------------------------------------------------------------------------- dedup-children! [48] 11.8% loop [64] 88.2% [64] 5176(15.9%) 5176(15.9%) loop ...racket-7.2/collects/racket/list.rkt:434:17 loop [64] 88.2% -------------------------------------------------------------------------------- for-loop [50] 100.0% [65] 3070(9.4%) 0(0.0%) for-loop ...erbie/master/src/core/egraph.rkt:219:8 hash-update! [82] 100.0% -------------------------------------------------------------------------------- custom-set-union [51] 100.0% [66] 1618(5.0%) 720(2.2%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [76] 55.5% -------------------------------------------------------------------------------- dedup-children! [48] 26.2% loop [67] 73.8% [67] 850(2.6%) 0(0.0%) loop ...racket-7.2/collects/racket/list.rkt:417:34 loop [67] 73.8% loop [77] 26.2% -------------------------------------------------------------------------------- for-loop [39] 46.7% loop [52] 53.3% [68] 522(1.6%) 0(0.0%) foldl ....2/collects/racket/private/list.rkt:229:4 merge2 [78] 100.0% -------------------------------------------------------------------------------- loop [52] 32.5% for-loop [39] 67.5% [69] 498(1.5%) 498(1.5%) step ...ket-7.2/collects/racket/function.rkt:145:9 -------------------------------------------------------------------------------- eval-const-expr [59] 100.0% [70] 242(0.7%) 0(0.0%) temp85_0 (unknown source) compile15 [80] 100.0% -------------------------------------------------------------------------------- custom-set-union [51] 100.0% [71] 240(0.7%) 240(0.7%) for-loop ...cts/racket/private/set-types.rkt:152:2 -------------------------------------------------------------------------------- eval-errors [60] 100.0% [72] 236(0.7%) 236(0.7%) for-loop ...ies/herbie/master/src/points.rkt:181:2 -------------------------------------------------------------------------------- ??? [56] 100.0% [73] 218(0.7%) 0(0.0%) atab-add-altns ...ster/src/core/alt-table.rkt:49:0 atab-add-altn [81] 100.0% -------------------------------------------------------------------------------- loop [63] 100.0% [74] 3124(9.6%) 0(0.0%) ??? ...ightlies/herbie/master/src/points.rkt:106:2 ??? [92] 100.0% -------------------------------------------------------------------------------- loop [63] 100.0% [75] 1824(5.6%) 448(1.4%) loop ...ightlies/herbie/master/src/points.rkt:81:2 ??? [83] 62.0% hash-update! [82] 13.5% -------------------------------------------------------------------------------- for-loop [66] 100.0% [76] 898(2.8%) 898(2.8%) for-loop ...cts/racket/private/set-types.rkt:178:5 -------------------------------------------------------------------------------- loop [67] 100.0% [77] 850(2.6%) 850(2.6%) loop (unknown source) -------------------------------------------------------------------------------- foldl [68] 100.0% [78] 522(1.6%) 522(1.6%) merge2 ...s/herbie/master/src/core/ematch.rkt:24:0 -------------------------------------------------------------------------------- loop [63] 100.0% [79] 460(1.4%) 268(0.8%) andmap ...2/collects/racket/private/map.rkt:102:13 ordinary-value? [86] 41.7% -------------------------------------------------------------------------------- temp85_0 [70] 100.0% [80] 242(0.7%) 0(0.0%) compile15 (unknown source) temp91_0 [85] 100.0% -------------------------------------------------------------------------------- atab-add-altns [73] 100.0% [81] 218(0.7%) 0(0.0%) atab-add-altn ...ster/src/core/alt-table.rkt:203:0 errors [84] 100.0% -------------------------------------------------------------------------------- loop [75] 4.4% for-loop [50] 40.5% for-loop [65] 55.1% [82] 5570(17.1%) 426(1.3%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [87] 92.4% -------------------------------------------------------------------------------- ??? [38] 16.2% loop [75] 83.8% [83] 1348(4.1%) 0(0.0%) ??? ...htlies/herbie/master/src/programs.rkt:115:2 ??? [89] 84.7% ??? [92] 15.3% -------------------------------------------------------------------------------- atab-add-altn [81] 18.6% ??? [38] 81.4% [84] 1170(3.6%) 0(0.0%) errors ...tlies/herbie/master/src/points.rkt:205:0 for-loop [88] 100.0% -------------------------------------------------------------------------------- compile15 [80] 100.0% [85] 242(0.7%) 0(0.0%) temp91_0 (unknown source) compile-top9 [90] 100.0% -------------------------------------------------------------------------------- andmap [79] 100.0% [86] 192(0.6%) 192(0.6%) ordinary-value? ...erbie/master/src/float.rkt:52:0 -------------------------------------------------------------------------------- hash-update! [82] 100.0% [87] 5144(15.8%) 0(0.0%) ??? ...es/herbie/master/src/core/egraph.rkt:221:24 for-loop [91] 100.0% -------------------------------------------------------------------------------- errors [84] 100.0% [88] 1170(3.6%) 952(2.9%) for-loop ...ies/herbie/master/src/points.rkt:207:2 ??? [38] 18.6% -------------------------------------------------------------------------------- ??? [83] 100.0% [89] 1142(3.5%) 0(0.0%) ??? ...t-7.2/collects/racket/private/kw.rkt:594:14 ??? [92] 80.9% ??? [94] 19.1% -------------------------------------------------------------------------------- temp91_0 [85] 100.0% [90] 242(0.7%) 0(0.0%) compile-top9 (unknown source) compile-forms33 [93] 100.0% -------------------------------------------------------------------------------- ??? [87] 100.0% [91] 5144(15.8%) 4944(15.1%) for-loop ...rbie/master/src/core/egraph.rkt:222:26 update-en-expr [97] 3.9% -------------------------------------------------------------------------------- ??? [14] 1.8% for-loop [23] 1.8% ??? [83] 4.6% ??? [89] 20.6% ??? [74] 69.5% [92] 4494(13.8%) 772(2.4%) ??? ...tract/private/arrow-higher-order.rkt:360:33 sample-multi-bounded [95] 58.3% ival-mult [96] 14.6% mk-ival [98] 4.6% approximate9 [3] 1.8% hash-ref! [10] 1.8% -------------------------------------------------------------------------------- compile-top9 [90] 100.0% [93] 242(0.7%) 242(0.7%) compile-forms33 (unknown source) -------------------------------------------------------------------------------- ??? [89] 100.0% [94] 218(0.7%) 218(0.7%) ??? .../herbie/master/src/syntax/syntax.rkt:214:17 -------------------------------------------------------------------------------- ??? [92] 100.0% [95] 2618(8.0%) 528(1.6%) sample-multi-bounded ...master/src/points.rkt:15:0 random-ranges [99] 71.2% for-loop [101] 8.6% -------------------------------------------------------------------------------- ??? [92] 100.0% [96] 658(2.0%) 0(0.0%) ival-mult ...rbie/master/src/biginterval.rkt:111:0 bfmul [100] 100.0% -------------------------------------------------------------------------------- for-loop [91] 31.4% loop! [41] 68.6% [97] 636(1.9%) 636(1.9%) update-en-expr ...master/src/core/egraph.rkt:207:0 -------------------------------------------------------------------------------- ??? [92] 100.0% [98] 206(0.6%) 0(0.0%) mk-ival .../herbie/master/src/biginterval.rkt:57:0 bf [102] 100.0% -------------------------------------------------------------------------------- sample-multi-bounded [95] 100.0% [99] 1864(5.7%) 684(2.1%) random-ranges ...erbie/master/src/common.rkt:183:0 cons/c [103] 63.3% -------------------------------------------------------------------------------- ival-mult [96] 100.0% [100] 658(2.0%) 0(0.0%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:821:4 new-mpfr [104] 67.2% ??? [105] 32.8% -------------------------------------------------------------------------------- sample-multi-bounded [95] 100.0% [101] 226(0.7%) 226(0.7%) for-loop ...lies/herbie/master/src/points.rkt:23:4 -------------------------------------------------------------------------------- mk-ival [98] 100.0% [102] 206(0.6%) 206(0.6%) bf ...ath-lib/math/private/bigfloat/mpfr.rkt:601:2 -------------------------------------------------------------------------------- random-ranges [99] 100.0% [103] 1180(3.6%) 0(0.0%) cons/c .../racket/contract/private/guts.rkt:504:15 coerce-contract [106] 100.0% -------------------------------------------------------------------------------- bfmul [100] 100.0% [104] 442(1.4%) 442(1.4%) new-mpfr ...b/math/private/bigfloat/mpfr.rkt:335:0 -------------------------------------------------------------------------------- bfmul [100] 100.0% [105] 216(0.7%) 216(0.7%) ??? /opt/racket-7.2/collects/ffi/unsafe.rkt:905:4 -------------------------------------------------------------------------------- cons/c [103] 100.0% [106] 1180(3.6%) 0(0.0%) coerce-contract ...contract/private/guts.rkt:308:0 coerce-contract/f [107] 100.0% -------------------------------------------------------------------------------- coerce-contract [106] 100.0% [107] 1180(3.6%) 966(3.0%) coerce-contract/f ...ntract/private/guts.rkt:373:0 coerce-simple-value [108] 18.1% -------------------------------------------------------------------------------- coerce-contract/f [107] 100.0% [108] 214(0.7%) 214(0.7%) coerce-simple-value ...ract/private/guts.rkt:386:0 --------------------------------------------------------------------------------