Profiling results ----------------- Total cpu time observed: 17854ms (out of 18112ms) Number of samples taken: 74 (once every 241ms) ====================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ====================================================================== ??? [27] 100.0% [1] 16726(93.7%) 0(0.0%) profile-thunk14 ...t/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% ---------------------------------------------------------------------- ??? [27] 100.0% [2] 11492(64.4%) 0(0.0%) run-improve58 ...ock/herbie/src/mainloop.rkt:242:0 for-loop [6] 52.4% get-final-combination [7] 47.6% ---------------------------------------------------------------------- loop [78] 3.8% ??? [27] 96.2% [3] 5154(28.9%) 0(0.0%) simplify ...lock/herbie/src/core/simplify.rkt:39:0 simplify-expr [8] 71.9% for-loop [9] 19.9% iterate-egraph!5 [13] 8.1% ---------------------------------------------------------------------- hash-ref! [86] 100.0% [4] 222(1.2%) 0(0.0%) ??? .../ztatlock/herbie/src/core/taylor.rkt:285:26 for-loop [10] 100.0% ---------------------------------------------------------------------- profile-thunk14 [1] 100.0% [5] 16726(93.7%) 0(0.0%) run ...share/racket/pkgs/profile-lib/main.rkt:31:2 ??? [27] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [6] 6020(33.7%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:253:8 run-iter! [11] 100.0% ---------------------------------------------------------------------- run-improve58 [2] 100.0% [7] 5472(30.6%) 0(0.0%) get-final-combination ...ie/src/mainloop.rkt:269:0 split-table [12] 96.4% extract-alt [14] 3.6% ---------------------------------------------------------------------- simplify [3] 100.0% [8] 3706(20.8%) 0(0.0%) simplify-expr ...herbie/src/core/simplify.rkt:68:0 iterate-egraph!5 [13] 100.0% ---------------------------------------------------------------------- simplify [3] 100.0% [9] 1028(5.8%) 0(0.0%) for-loop ...ock/herbie/src/core/simplify.rkt:61:12 iterate-egraph!5 [13] 100.0% ---------------------------------------------------------------------- ??? [4] 100.0% [10] 222(1.2%) 0(0.0%) for-loop ...lock/herbie/src/core/taylor.rkt:285:52 hash-ref! [86] 100.0% ---------------------------------------------------------------------- for-loop [6] 100.0% [11] 6020(33.7%) 0(0.0%) run-iter! ...tatlock/herbie/src/mainloop.rkt:223:0 simplify! [16] 82.3% finalize-iter! [18] 10.3% gen-series! [19] 3.7% choose-best-alt! [20] 3.7% ---------------------------------------------------------------------- get-final-combination [7] 100.0% [12] 5274(29.5%) 0(0.0%) split-table .../ztatlock/herbie/src/glue.rkt:171:0 infer-splitpoints4 [17] 88.2% ??? [24] 11.8% ---------------------------------------------------------------------- simplify [3] 8.1% for-loop [9] 19.9% simplify-expr [8] 71.9% [13] 5154(28.9%) 0(0.0%) iterate-egraph!5 ...bie/src/core/simplify.rkt:95:0 one-iter [15] 100.0% ---------------------------------------------------------------------- get-final-combination [7] 100.0% [14] 198(1.1%) 0(0.0%) extract-alt ...e/ztatlock/herbie/src/glue.rkt:57:0 loop [78] 100.0% ---------------------------------------------------------------------- iterate-egraph!5 [13] 100.0% [15] 5154(28.9%) 212(1.2%) one-iter ...ock/herbie/src/core/simplify.rkt:106:0 for-loop [23] 67.9% loop [25] 28.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [16] 4956(27.8%) 0(0.0%) simplify! ...tatlock/herbie/src/mainloop.rkt:162:0 for-loop [21] 100.0% ---------------------------------------------------------------------- split-table [12] 100.0% [17] 4654(26.1%) 0(0.0%) infer-splitpoints4 ...ie/src/core/regimes.rkt:19:0 option-on-expr [22] 100.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [18] 622(3.5%) 0(0.0%) finalize-iter! ...ck/herbie/src/mainloop.rkt:177:0 ??? [24] 100.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [19] 222(1.2%) 0(0.0%) gen-series! ...tlock/herbie/src/mainloop.rkt:134:0 for-loop [26] 100.0% ---------------------------------------------------------------------- run-iter! [11] 100.0% [20] 220(1.2%) 0(0.0%) choose-best-alt! .../herbie/src/mainloop.rkt:120:0 ??? [24] 100.0% ---------------------------------------------------------------------- simplify! [16] 100.0% [21] 4956(27.8%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:166:6 ??? [27] 100.0% ---------------------------------------------------------------------- infer-splitpoints4 [17] 100.0% [22] 4654(26.1%) 0(0.0%) option-on-expr ...erbie/src/core/regimes.rkt:106:0 sort-context-on-expr [28] 91.1% pick-errors [35] 4.6% errors [80] 4.3% ---------------------------------------------------------------------- for-loop [23] 46.8% one-iter [15] 53.2% [23] 3498(19.6%) 1022(5.7%) for-loop ...ck/herbie/src/core/simplify.rkt:116:12 for-loop [23] 46.8% match-e [29] 35.4% ---------------------------------------------------------------------- choose-best-alt! [20] 15.0% split-table [12] 42.4% finalize-iter! [18] 42.5% [24] 1462(8.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:357:18 for-loop [31] 42.5% split-atab [32] 42.4% atab-pick-alt8 [34] 15.0% ---------------------------------------------------------------------- one-iter [15] 100.0% [25] 1444(8.1%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:53:19 apply-match [30] 100.0% ---------------------------------------------------------------------- gen-series! [19] 100.0% [26] 222(1.2%) 0(0.0%) for-loop ...ztatlock/herbie/src/mainloop.rkt:140:7 taylor-alt [33] 100.0% ---------------------------------------------------------------------- for-loop [21] 9.8% run [5] 43.2% [27] 17632(98.8%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk14 [1] 43.2% run-improve58 [2] 28.9% loop [36] 18.1% simplify [3] 9.8% ---------------------------------------------------------------------- option-on-expr [22] 100.0% [28] 4240(23.7%) 0(0.0%) sort-context-on-expr ...herbie/src/points.rkt:50:0 sort [37] 100.0% ---------------------------------------------------------------------- for-loop [50] 17.2% for-loop [23] 82.8% [29] 2476(13.9%) 202(1.1%) match-e ...tatlock/herbie/src/core/ematch.rkt:46:0 for-loop [38] 67.0% for-loop [50] 12.2% constant? [47] 8.1% loop [78] 4.4% list-cartesian-product [52] 4.2% ---------------------------------------------------------------------- loop [25] 100.0% [30] 1444(8.1%) 0(0.0%) apply-match .../herbie/src/core/simplify.rkt:122:2 for-loop [41] 42.9% substitute-e [43] 15.2% reduce-to-single! [46] 14.0% merge-egraph-nodes! [51] 14.0% loop! [87] 13.9% ---------------------------------------------------------------------- ??? [24] 100.0% [31] 622(3.5%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:51:2 atab-add-altn [39] 100.0% ---------------------------------------------------------------------- ??? [24] 100.0% [32] 620(3.5%) 0(0.0%) split-atab ...k/herbie/src/core/alt-table.rkt:74:0 for-loop [40] 100.0% ---------------------------------------------------------------------- for-loop [26] 100.0% [33] 222(1.2%) 0(0.0%) taylor-alt ...e/ztatlock/herbie/src/glue.rkt:142:0 for-loop [42] 100.0% ---------------------------------------------------------------------- ??? [24] 100.0% [34] 220(1.2%) 0(0.0%) atab-pick-alt8 ...rbie/src/core/alt-table.rkt:54:0 ??? [44] 100.0% ---------------------------------------------------------------------- option-on-expr [22] 100.0% [35] 214(1.2%) 0(0.0%) pick-errors ...k/herbie/src/core/regimes.rkt:173:0 for-loop [45] 100.0% ---------------------------------------------------------------------- ??? [27] 100.0% [36] 6140(34.4%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:122:2 make-exacts* [60] 64.5% loop [49] 35.5% ---------------------------------------------------------------------- sort-context-on-expr [28] 100.0% [37] 4240(23.7%) 0(0.0%) sort ...ket/collects/racket/private/sort.rkt:213:0 copying-mergesort [48] 62.4% loop [61] 37.6% ---------------------------------------------------------------------- match-e [29] 100.0% [38] 1874(10.5%) 602(3.4%) for-loop ...tlock/herbie/src/core/ematch.rkt:59:11 for-loop [50] 28.9% list-cartesian-product [52] 17.6% foldl [58] 10.8% curry* [59] 10.7% ---------------------------------------------------------------------- for-loop [31] 100.0% [39] 622(3.5%) 0(0.0%) atab-add-altn ...rbie/src/core/alt-table.rkt:208:0 best-and-tied-at-points [53] 100.0% ---------------------------------------------------------------------- split-atab [32] 100.0% [40] 620(3.5%) 0(0.0%) for-loop ...ock/herbie/src/core/alt-table.rkt:75:2 for-loop [54] 100.0% ---------------------------------------------------------------------- apply-match [30] 100.0% [41] 620(3.5%) 0(0.0%) for-loop ...ck/herbie/src/core/simplify.rkt:136:10 merge-egraph-nodes! [51] 100.0% ---------------------------------------------------------------------- taylor-alt [33] 100.0% [42] 222(1.2%) 0(0.0%) for-loop /home/ztatlock/herbie/src/glue.rkt:144:2 location-do [55] 100.0% ---------------------------------------------------------------------- apply-match [30] 100.0% [43] 220(1.2%) 0(0.0%) substitute-e ...ck/herbie/src/core/ematch.rkt:71:0 mk-enode! [56] 100.0% ---------------------------------------------------------------------- atab-pick-alt8 [34] 100.0% [44] 220(1.2%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:369:33 best-alt [57] 100.0% ---------------------------------------------------------------------- pick-errors [35] 100.0% [45] 214(1.2%) 0(0.0%) for-loop ...lock/herbie/src/core/regimes.rkt:176:4 eval-prog [79] 100.0% ---------------------------------------------------------------------- apply-match [30] 100.0% [46] 202(1.1%) 202(1.1%) reduce-to-single! ...bie/src/core/egraph.rkt:324:0 ---------------------------------------------------------------------- match-e [29] 100.0% [47] 200(1.1%) 200(1.1%) constant? ...ck/herbie/src/syntax/syntax.rkt:221:0 ---------------------------------------------------------------------- sort [37] 38.1% copying-mergesort [48] 61.9% [48] 2644(14.8%) 0(0.0%) copying-mergesort .../racket/private/sort.rkt:91:4 copying-mergesort [48] 61.9% loop [61] 31.7% jloop [63] 6.4% ---------------------------------------------------------------------- loop [36] 100.0% [49] 2182(12.2%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:93:2 loop [62] 78.1% make-exacts* [60] 21.9% ---------------------------------------------------------------------- match-e [29] 38.1% for-loop [38] 61.9% [50] 1054(5.9%) 0(0.0%) for-loop ...tlock/herbie/src/core/ematch.rkt:65:37 match-e [29] 81.0% ??? [70] 19.0% ---------------------------------------------------------------------- merge-egraph-nodes! [51] 13.3% apply-match [30] 24.6% for-loop [41] 62.2% [51] 822(4.6%) 0(0.0%) merge-egraph-nodes! ...e/src/core/egraph.rkt:152:0 for-loop [66] 48.9% update-leader! [65] 37.8% merge-egraph-nodes! [51] 13.3% ---------------------------------------------------------------------- match-e [29] 16.2% for-loop [38] 33.8% list-cartesian-product [52] 50.0% [52] 650(3.6%) 650(3.6%) list-cartesian-product ...src/core/ematch.rkt:20:0 list-cartesian-product [52] 50.0% ---------------------------------------------------------------------- atab-add-altn [39] 100.0% [53] 622(3.5%) 0(0.0%) best-and-tied-at-points ...ore/alt-table.rkt:122:0 errors [80] 100.0% ---------------------------------------------------------------------- for-loop [40] 100.0% [54] 620(3.5%) 0(0.0%) for-loop ...ck/herbie/src/core/alt-table.rkt:80:53 loop [64] 100.0% ---------------------------------------------------------------------- location-do [55] 50.0% for-loop [42] 50.0% [55] 222(1.2%) 0(0.0%) location-do ...tlock/herbie/src/programs.rkt:129:0 location-do [55] 50.0% approximate9 [67] 50.0% ---------------------------------------------------------------------- substitute-e [43] 100.0% [56] 220(1.2%) 220(1.2%) mk-enode! ...lock/herbie/src/core/egraph.rkt:101:0 ---------------------------------------------------------------------- ??? [44] 100.0% [57] 220(1.2%) 0(0.0%) best-alt /home/ztatlock/herbie/src/glue.rkt:79:0 argmins [68] 100.0% ---------------------------------------------------------------------- for-loop [38] 100.0% [58] 202(1.1%) 0(0.0%) foldl ...et/collects/racket/private/list.rkt:229:4 merge2 [69] 100.0% ---------------------------------------------------------------------- for-loop [38] 100.0% [59] 200(1.1%) 200(1.1%) curry* ...racket/collects/racket/function.rkt:44:2 ---------------------------------------------------------------------- loop [49] 10.8% loop [36] 89.2% [60] 4436(24.8%) 0(0.0%) make-exacts* ...tatlock/herbie/src/points.rkt:80:0 loop [78] 58.0% map [72] 42.0% ---------------------------------------------------------------------- sort [37] 44.8% copying-mergesort [48] 55.2% [61] 3560(19.9%) 0(0.0%) loop ...cket/collects/racket/private/sort.rkt:64:8 ??? [71] 93.2% ??? [88] 6.8% ---------------------------------------------------------------------- loop [49] 100.0% [62] 1704(9.5%) 0(0.0%) loop /home/ztatlock/herbie/src/points.rkt:83:4 map [72] 100.0% ---------------------------------------------------------------------- copying-mergesort [48] 100.0% [63] 680(3.8%) 0(0.0%) jloop ...et/collects/racket/private/sort.rkt:85:19 ??? [71] 100.0% ---------------------------------------------------------------------- for-loop [54] 100.0% [64] 620(3.5%) 0(0.0%) loop ...ket/collects/racket/private/list.rkt:264:4 ??? [73] 100.0% ---------------------------------------------------------------------- merge-egraph-nodes! [51] 100.0% [65] 420(2.4%) 0(0.0%) update-leader! ...herbie/src/core/egraph.rkt:217:0 for-loop [74] 100.0% ---------------------------------------------------------------------- merge-egraph-nodes! [51] 100.0% [66] 402(2.3%) 200(1.1%) for-loop ...tlock/herbie/src/core/egraph.rkt:232:6 update-en-expr [77] 50.2% ---------------------------------------------------------------------- location-do [55] 100.0% [67] 222(1.2%) 0(0.0%) approximate9 ...ck/herbie/src/core/taylor.rkt:11:0 f94 [75] 100.0% ---------------------------------------------------------------------- best-alt [57] 100.0% [68] 220(1.2%) 0(0.0%) argmins /home/ztatlock/herbie/src/common.rkt:85:0 composed [76] 100.0% ---------------------------------------------------------------------- foldl [58] 100.0% [69] 202(1.1%) 202(1.1%) merge2 ...ztatlock/herbie/src/core/ematch.rkt:31:0 ---------------------------------------------------------------------- for-loop [50] 100.0% [70] 200(1.1%) 200(1.1%) ??? /home/ztatlock/herbie/src/core/ematch.rkt:50:5 ---------------------------------------------------------------------- jloop [63] 17.0% loop [61] 83.0% [71] 3998(22.4%) 428(2.4%) ??? /home/ztatlock/herbie/src/points.rkt:52:27 eval-prog [79] 83.7% ->flonum [82] 5.6% ---------------------------------------------------------------------- loop [62] 47.8% make-exacts* [60] 52.2% [72] 3568(20.0%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:21:13 loop [78] 92.9% ??? [88] 7.1% ---------------------------------------------------------------------- loop [64] 100.0% [73] 620(3.5%) 0(0.0%) ??? .../ztatlock/herbie/src/core/regimes.rkt:291:8 eval-prog [79] 100.0% ---------------------------------------------------------------------- update-leader! [65] 100.0% [74] 420(2.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:222:6 for-loop [81] 100.0% ---------------------------------------------------------------------- approximate9 [67] 100.0% [75] 222(1.2%) 0(0.0%) f94 ...t/collects/racket/match/compiler.rkt:499:40 taylor-sqrt [83] 100.0% ---------------------------------------------------------------------- argmins [68] 100.0% [76] 220(1.2%) 0(0.0%) composed ...ollects/racket/private/list.rkt:321:16 errors [80] 100.0% ---------------------------------------------------------------------- for-loop [66] 100.0% [77] 202(1.1%) 202(1.1%) update-en-expr ...herbie/src/core/egraph.rkt:211:0 ---------------------------------------------------------------------- make-exacts* [60] 0.0% map [72] 0.3% loop! [87] 1.5% extract-alt [14] 3.0% match-e [29] 3.4% loop [78] 91.7% [78] 6506(36.4%) 220(1.2%) loop ...cket/collects/racket/private/map.rkt:26:19 loop [78] 91.7% simplify [3] 3.0% loop! [87] 1.5% ??? [88] 0.4% ---------------------------------------------------------------------- for-loop [45] 5.1% ??? [73] 14.8% ??? [71] 80.1% [79] 4182(23.4%) 4182(23.4%) eval-prog ...tatlock/herbie/src/programs.rkt:162:0 ---------------------------------------------------------------------- option-on-expr [22] 19.2% composed [76] 21.1% best-and-tied-at-points [53] 59.7% [80] 1042(5.8%) 0(0.0%) errors /home/ztatlock/herbie/src/points.rkt:144:0 for-loop [84] 100.0% ---------------------------------------------------------------------- for-loop [74] 100.0% [81] 420(2.4%) 0(0.0%) for-loop ...tlock/herbie/src/core/egraph.rkt:223:8 hash-update! [85] 100.0% ---------------------------------------------------------------------- ??? [71] 100.0% [82] 222(1.2%) 0(0.0%) ->flonum ...ock/herbie/src/syntax/syntax.rkt:224:0 ??? [95] 100.0% ---------------------------------------------------------------------- f94 [75] 100.0% [83] 222(1.2%) 0(0.0%) taylor-sqrt ...ck/herbie/src/core/taylor.rkt:346:0 hash-ref! [86] 100.0% ---------------------------------------------------------------------- errors [80] 100.0% [84] 1042(5.8%) 220(1.2%) for-loop ...e/ztatlock/herbie/src/points.rkt:147:4 ??? [88] 78.9% ---------------------------------------------------------------------- for-loop [81] 100.0% [85] 420(2.4%) 0(0.0%) hash-update! ...ket/private/more-scheme.rkt:362:13 ??? [89] 100.0% ---------------------------------------------------------------------- for-loop [10] 50.0% taylor-sqrt [83] 50.0% [86] 222(1.2%) 0(0.0%) hash-ref! ...racket/private/more-scheme.rkt:373:13 ??? [4] 50.0% simplify [90] 50.0% ---------------------------------------------------------------------- loop [78] 50.0% apply-match [30] 50.0% [87] 200(1.1%) 200(1.1%) loop! .../ztatlock/herbie/src/core/enode.rkt:163:2 loop [78] 50.0% ---------------------------------------------------------------------- loop [61] 3.4% map [72] 3.5% for-loop [84] 11.4% loop [78] 81.7% [88] 7204(40.3%) 756(4.2%) ??? /home/ztatlock/herbie/src/programs.rkt:168:4 ??? [91] 37.0% real->bigfloat [92] 36.9% ??? [101] 15.7% ---------------------------------------------------------------------- hash-update! [85] 100.0% [89] 420(2.4%) 0(0.0%) ??? .../ztatlock/herbie/src/core/egraph.rkt:225:24 for-loop [93] 100.0% ---------------------------------------------------------------------- hash-ref! [86] 100.0% [90] 222(1.2%) 0(0.0%) simplify ...atlock/herbie/src/core/reduce.rkt:18:0 parse-loop50 [94] 100.0% ---------------------------------------------------------------------- ??? [88] 100.0% [91] 2664(14.9%) 402(2.3%) ??? ...acket/collects/racket/private/kw.rkt:400:14 ??? [99] 48.9% ??? [95] 15.8% bf* [96] 10.6% ...higher-order.rkt:373:33 [97] 9.7% ---------------------------------------------------------------------- ??? [88] 100.0% [92] 2656(14.9%) 2162(12.1%) real->bigfloat .../private/bigfloat/mpfr.rkt:451:0 ??? [105] 18.6% ---------------------------------------------------------------------- ??? [89] 100.0% [93] 420(2.4%) 420(2.4%) for-loop ...lock/herbie/src/core/egraph.rkt:226:26 ---------------------------------------------------------------------- simplify [90] 100.0% [94] 222(1.2%) 0(0.0%) parse-loop50 ...s/racket/match/compiler.rkt:410:15 make-keyword-procedure [98] 100.0% ---------------------------------------------------------------------- ->flonum [82] 34.6% ??? [91] 65.4% [95] 642(3.6%) 642(3.6%) ??? /home/ztatlock/herbie/src/config.rkt:29:0 ---------------------------------------------------------------------- ??? [91] 100.0% [96] 282(1.6%) 0(0.0%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [99] 100.0% ---------------------------------------------------------------------- ??? [91] 100.0% [97] 258(1.4%) 0(0.0%) ...higher-order.rkt:373:33 (unknown source) ??? [100] 100.0% ---------------------------------------------------------------------- parse-loop50 [94] 100.0% [98] 222(1.2%) 222(1.2%) make-keyword-procedure ...ket/private/kw.rkt:216:4 ---------------------------------------------------------------------- bf* [96] 17.8% ??? [91] 82.2% [99] 1584(8.9%) 0(0.0%) ??? ...-racket/utils/simple-result-arrow.rkt:26:12 bfadd [102] 68.1% bfsqr [103] 17.3% ??? [104] 14.6% ---------------------------------------------------------------------- ...higher-order.rkt:373:33 [97]100.0% [100] 258(1.4%) 0(0.0%) ??? ...cts/racket/contract/private/list.rkt:187:10 ??? [101] 100.0% ---------------------------------------------------------------------- ??? [100] 18.6% ??? [88] 81.4% [101] 1386(7.8%) 0(0.0%) ??? ...ects/racket/contract/private/guts.rkt:638:8 ??? [104] 100.0% ---------------------------------------------------------------------- ??? [99] 100.0% [102] 1078(6.0%) 796(4.5%) bfadd ...-lib/math/private/bigfloat/mpfr.rkt:819:4 ??? [105] 26.2% ---------------------------------------------------------------------- ??? [99] 100.0% [103] 274(1.5%) 274(1.5%) bfsqr ...-lib/math/private/bigfloat/mpfr.rkt:616:4 ---------------------------------------------------------------------- ??? [99] 14.3% ??? [101] 85.7% [104] 1618(9.1%) 1382(7.7%) ??? ...tract/private/arrow-higher-order.rkt:373:33 ??? [106] 14.6% ---------------------------------------------------------------------- bfadd [102] 36.3% real->bigfloat [92] 63.7% [105] 776(4.3%) 776(4.3%) ??? .../share/racket/collects/ffi/unsafe.rkt:861:4 ---------------------------------------------------------------------- ??? [104] 100.0% [106] 236(1.3%) 236(1.3%) ??? ...llects/racket/contract/combinator.rkt:178:4 ----------------------------------------------------------------------