Profiling results ----------------- Total cpu time observed: 136164ms (out of 139644ms) Number of samples taken: 338 (once every 403ms) (Hiding functions with self<1.0% and local<2.0%: 3 of 107 hidden) ============================================================================== Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ============================================================================== run [13] 50.0% [1] 136164(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [7] 50.0% loop [19] 37.8% run-improve39 [8] 12.2% ------------------------------------------------------------------------------ map-enodes [30] 1.2% loop [34] 98.8% [2] 24356(17.9%) 0(0.0%) set-precompute! ...lop/src/core/simplify.rkt:140:0 for-loop [9] 100.0% ------------------------------------------------------------------------------ hash-ref! [42] 100.0% [3] 4192(3.1%) 0(0.0%) ??? ...tlies/herbie/develop/src/programs.rkt:153:5 loop [34] 100.0% ------------------------------------------------------------------------------ for-loop [98] 100.0% [4] 654(0.5%) 0(0.0%) syntax-e (unknown source) syntax-e/no-taint [10] 100.0% ------------------------------------------------------------------------------ hash-ref! [42] 100.0% [5] 618(0.5%) 0(0.0%) f8 ...et/collects/racket/match/compiler.rkt:507:40 map [11] 100.0% ------------------------------------------------------------------------------ match-e [47] 100.0% [6] 310(0.2%) 0(0.0%) for-loop ...rbie/develop/src/core/ematch.rkt:59:11 for-loop [12] 100.0% ------------------------------------------------------------------------------ ??? [1] 100.0% [7] 136164(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [13] 100.0% ------------------------------------------------------------------------------ ??? [1] 100.0% [8] 33114(24.3%) 0(0.0%) run-improve39 ...ie/develop/src/mainloop.rkt:286:0 for-loop [14] 84.3% setup-prog!32 [16] 13.8% for-loop [18] 1.9% ------------------------------------------------------------------------------ set-precompute! [2] 100.0% [9] 24356(17.9%) 0(0.0%) for-loop ...ie/develop/src/core/simplify.rkt:142:2 reduce-to-new! [15] 51.7% update-leader! [41] 41.4% eval-const-expr [17] 5.3% ??? [40] 1.5% ------------------------------------------------------------------------------ syntax-e [4] 100.0% [10] 654(0.5%) 0(0.0%) syntax-e/no-taint (unknown source) loop [84] 100.0% ------------------------------------------------------------------------------ loop [34] 50.0% f8 [5] 50.0% [11] 618(0.5%) 0(0.0%) map ...acket/collects/racket/private/map.rkt:35:13 hash-ref! [42] 50.0% ??? [58] 50.0% ------------------------------------------------------------------------------ for-loop [6] 100.0% [12] 310(0.2%) 0(0.0%) for-loop ...rbie/develop/src/core/ematch.rkt:65:37 match-e [47] 100.0% ------------------------------------------------------------------------------ profile-thunk16 [7] 100.0% [13] 136164(100.0%) 0(0.0%) run ...racket/share/pkgs/profile-lib/main.rkt:39:2 ??? [1] 100.0% ------------------------------------------------------------------------------ run-improve39 [8] 100.0% [14] 27922(20.5%) 0(0.0%) for-loop ...herbie/develop/src/mainloop.rkt:298:29 ??? [20] 100.0% ------------------------------------------------------------------------------ for-loop [9] 100.0% [15] 12602(9.3%) 0(0.0%) reduce-to-new! ...evelop/src/core/egraph.rkt:337:0 merge-egraph-nodes! [21] 97.6% hash-update! [66] 2.4% ------------------------------------------------------------------------------ run-improve39 [8] 100.0% [16] 4574(3.4%) 0(0.0%) setup-prog!32 ...bie/develop/src/mainloop.rkt:63:0 loop [19] 100.0% ------------------------------------------------------------------------------ for-loop [9] 100.0% [17] 1294(1.0%) 0(0.0%) eval-const-expr .../develop/src/programs.rkt:132:0 eval-prog [35] 100.0% ------------------------------------------------------------------------------ run-improve39 [8] 100.0% [18] 618(0.5%) 0(0.0%) for-loop .../herbie/develop/src/mainloop.rkt:303:8 run-iter! [22] 100.0% ------------------------------------------------------------------------------ setup-prog!32 [16] 4.2% ??? [1] 95.8% [19] 107624(79.0%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:166:2 loop [29] 61.9% loop [23] 35.6% make-exacts [25] 1.5% make-exacts* [31] 1.0% ------------------------------------------------------------------------------ for-loop [14] 100.0% [20] 27922(20.5%) 0(0.0%) ??? ...s/herbie/develop/src/core/simplify.rkt:31:0 iterate-egraph!7 [24] 97.7% loop [26] 2.3% ------------------------------------------------------------------------------ reduce-to-new! [15] 98.8% [21] 12300(9.0%) 0(0.0%) merge-egraph-nodes! ...p/src/core/egraph.rkt:153:0 update-leader! [41] 96.3% for-loop [28] 2.4% ------------------------------------------------------------------------------ for-loop [18] 100.0% [22] 618(0.5%) 0(0.0%) run-iter! ...herbie/develop/src/mainloop.rkt:267:0 localize-error [27] 100.0% ------------------------------------------------------------------------------ loop [19] 100.0% [23] 38354(28.2%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:124:2 loop [29] 53.6% make-exacts* [31] 41.1% eval-prog [35] 5.3% ------------------------------------------------------------------------------ ??? [20] 100.0% [24] 27282(20.0%) 0(0.0%) iterate-egraph!7 ...lop/src/core/simplify.rkt:55:0 map-enodes [30] 89.3% one-iter [32] 10.7% ------------------------------------------------------------------------------ loop [19] 100.0% [25] 1588(1.2%) 0(0.0%) make-exacts ...herbie/develop/src/points.rkt:122:0 make-exacts* [31] 80.9% loop [29] 19.1% ------------------------------------------------------------------------------ ??? [20] 100.0% [26] 640(0.5%) 0(0.0%) loop ...herbie/develop/src/core/simplify.rkt:184:2 for-loop [33] 100.0% ------------------------------------------------------------------------------ run-iter! [22] 100.0% [27] 618(0.5%) 0(0.0%) localize-error ...velop/src/core/localize.rkt:47:0 hash-ref! [42] 100.0% ------------------------------------------------------------------------------ merge-egraph-nodes! [21] 100.0% [28] 300(0.2%) 300(0.2%) for-loop ...ies/herbie/develop/src/common.rkt:92:9 ------------------------------------------------------------------------------ make-exacts [25] 0.3% loop [23] 23.5% loop [19] 76.1% [29] 87490(64.3%) 0(0.0%) loop ...htlies/herbie/develop/src/points.rkt:107:4 loop [34] 99.5% ??? [40] 0.5% ------------------------------------------------------------------------------ iterate-egraph!7 [24] 100.0% [30] 24356(17.9%) 0(0.0%) map-enodes ...ie/develop/src/core/egraph.rkt:140:0 loop [34] 98.8% set-precompute! [2] 1.2% ------------------------------------------------------------------------------ loop [19] 5.9% make-exacts [25] 7.1% loop [23] 87.0% [31] 18118(13.3%) 0(0.0%) make-exacts* ...erbie/develop/src/points.rkt:104:0 loop [34] 80.6% eval-prog [35] 19.4% ------------------------------------------------------------------------------ iterate-egraph!7 [24] 100.0% [32] 2926(2.1%) 0(0.0%) one-iter ...bie/develop/src/core/simplify.rkt:66:0 for-loop [36] 89.4% for-loop [39] 10.6% ------------------------------------------------------------------------------ loop [26] 100.0% [33] 640(0.5%) 0(0.0%) for-loop ...e/develop/src/core/simplify.rkt:177:29 loop [37] 50.3% for-loop [38] 49.7% ------------------------------------------------------------------------------ parse-loop14 [53] 0.0% map-enodes [30] 0.4% make-exacts* [31] 0.5% loop [29] 0.8% ??? [3] 3.2% loop [34] 95.2% [34] 130528(95.9%) 0(0.0%) loop ...cket/collects/racket/private/map.rkt:40:19 loop [34] 95.2% hash-ref! [42] 3.2% ??? [40] 1.2% set-precompute! [2] 0.4% ??? [58] 0.0% map [11] 0.0% ------------------------------------------------------------------------------ eval-const-expr [17] 19.0% loop [23] 29.5% make-exacts* [31] 51.5% [35] 6826(5.0%) 0(0.0%) eval-prog ...herbie/develop/src/programs.rkt:109:0 hash-ref! [42] 66.8% temp68_2 [43] 28.5% ->bf [46] 4.7% ------------------------------------------------------------------------------ one-iter [32] 100.0% [36] 2616(1.9%) 348(0.3%) for-loop ...ie/develop/src/core/simplify.rkt:113:2 for-loop [44] 62.0% update-leader! [41] 24.7% ------------------------------------------------------------------------------ for-loop [33] 100.0% [37] 322(0.2%) 0(0.0%) loop .../p92/racket/collects/racket/list.rkt:751:4 for-loop [45] 100.0% ------------------------------------------------------------------------------ for-loop [33] 100.0% [38] 318(0.2%) 318(0.2%) for-loop ...e/develop/src/core/simplify.rkt:164:13 ------------------------------------------------------------------------------ for-loop [39] 50.0% one-iter [32] 50.0% [39] 310(0.2%) 0(0.0%) for-loop ...ie/develop/src/core/simplify.rkt:76:12 for-loop [39] 50.0% match-e [47] 50.0% ------------------------------------------------------------------------------ for-loop [9] 0.4% loop [29] 0.4% loop [34] 99.2% [40] 101718(74.7%) 0(0.0%) ??? ...tlies/herbie/develop/src/programs.rkt:129:2 ??? [48] 100.0% ------------------------------------------------------------------------------ for-loop [36] 2.8% for-loop [9] 44.4% merge-egraph-nodes! [21] 52.8% [41] 22736(16.7%) 0(0.0%) update-leader! ...evelop/src/core/egraph.rkt:218:0 for-loop [49] 100.0% ------------------------------------------------------------------------------ map [11] 4.5% localize-error [27] 4.5% eval-prog [35] 19.2% loop [34] 71.9% [42] 5178(3.8%) 316(0.2%) hash-ref! .../racket/private/more-scheme.rkt:376:2 ??? [3] 68.9% bigfloat-hash [50] 17.1% parse-loop14 [53] 7.5% f8 [5] 4.5% ------------------------------------------------------------------------------ eval-prog [35] 100.0% [43] 1948(1.4%) 0(0.0%) temp68_2 (unknown source) compile16 [51] 100.0% ------------------------------------------------------------------------------ for-loop [36] 100.0% [44] 1622(1.2%) 326(0.2%) for-loop ...bie/develop/src/core/simplify.rkt:98:4 substitute-e [52] 60.7% mk-enode! [70] 19.2% ------------------------------------------------------------------------------ loop [37] 100.0% [45] 322(0.2%) 0(0.0%) for-loop .../herbie/develop/src/programs.rkt:169:2 ...velop/src/common.rkt:48:2 [54] 100.0% ------------------------------------------------------------------------------ eval-prog [35] 100.0% [46] 318(0.2%) 0(0.0%) ->bf ...tlies/herbie/develop/src/programs.rkt:52:0 table-ref [55] 100.0% ------------------------------------------------------------------------------ for-loop [12] 50.0% for-loop [39] 50.0% [47] 310(0.2%) 310(0.2%) match-e ...herbie/develop/src/core/ematch.rkt:46:0 for-loop [6] 50.0% ------------------------------------------------------------------------------ ??? [40] 100.0% [48] 101718(74.7%) 6008(4.4%) ??? ...acket/collects/racket/private/kw.rkt:592:14 ??? [56] 91.2% ??? [58] 1.0% ------------------------------------------------------------------------------ update-leader! [41] 100.0% [49] 22736(16.7%) 0(0.0%) for-loop ...rbie/develop/src/core/egraph.rkt:223:6 for-loop [57] 100.0% ------------------------------------------------------------------------------ hash-ref! [42] 100.0% [50] 4244(3.1%) 0(0.0%) bigfloat-hash ...h/private/bigfloat/mpfr.rkt:167:0 bfcanonicalize [59] 54.0% sig+exp->bigfloat [60] 46.0% ------------------------------------------------------------------------------ temp68_2 [43] 100.0% [51] 1948(1.4%) 0(0.0%) compile16 (unknown source) temp74_0 [61] 82.9% loop [84] 17.1% ------------------------------------------------------------------------------ for-loop [62] 16.6% for-loop [44] 83.4% [52] 984(0.7%) 0(0.0%) substitute-e ...e/develop/src/core/ematch.rkt:71:0 for-loop [62] 100.0% ------------------------------------------------------------------------------ hash-ref! [42] 100.0% [53] 618(0.5%) 0(0.0%) parse-loop14 ...s/racket/match/compiler.rkt:418:15 loop [34] 100.0% ------------------------------------------------------------------------------ for-loop [45] 100.0% [54] 322(0.2%) 0(0.0%) ...velop/src/common.rkt:48:2 ...e/arr-i.rkt:918:19 ??? [63] 100.0% ------------------------------------------------------------------------------ ->bf [46] 100.0% [55] 318(0.2%) 0(0.0%) table-ref ...es/herbie/develop/src/common.rkt:47:0 ??? [64] 100.0% ------------------------------------------------------------------------------ ??? [48] 100.0% [56] 92798(68.2%) 1932(1.4%) ??? ...tract/private/arrow-higher-order.rkt:361:33 bf-complex-mult [65] 84.4% bf-complex-add [67] 13.6% ------------------------------------------------------------------------------ for-loop [49] 100.0% [57] 22736(16.7%) 358(0.3%) for-loop ...rbie/develop/src/core/egraph.rkt:224:8 hash-update! [66] 98.4% ------------------------------------------------------------------------------ map [11] 26.1% loop [34] 31.4% ??? [48] 42.5% [58] 2370(1.7%) 1008(0.7%) ??? ...tract/private/arrow-higher-order.rkt:357:33 ->flonum [69] 57.5% ------------------------------------------------------------------------------ bigfloat-hash [50] 100.0% [59] 2292(1.7%) 1318(1.0%) bfcanonicalize .../private/bigfloat/mpfr.rkt:157:0 bigfloat->sig+exp [71] 42.5% ------------------------------------------------------------------------------ bigfloat-hash [50] 100.0% [60] 1952(1.4%) 0(0.0%) sig+exp->bigfloat ...ivate/bigfloat/mpfr.rkt:387:0 new-mpfr [94] 81.1% ??? [95] 18.9% ------------------------------------------------------------------------------ compile16 [51] 100.0% [61] 1614(1.2%) 0(0.0%) temp74_0 (unknown source) expand-single [68] 100.0% ------------------------------------------------------------------------------ substitute-e [52] 100.0% [62] 984(0.7%) 0(0.0%) for-loop ...rbie/develop/src/core/ematch.rkt:80:24 mk-enode! [70] 83.4% substitute-e [52] 16.6% ------------------------------------------------------------------------------ ...velop/src/common.rkt:48:2 [54] 100.0% [63] 322(0.2%) 322(0.2%) ??? ...ects/racket/contract/private/list.rkt:367:4 ------------------------------------------------------------------------------ table-ref [55] 100.0% [64] 318(0.2%) 0(0.0%) ??? ...ects/racket/contract/private/list.rkt:798:4 do-chaperone-procedure [72] 100.0% ------------------------------------------------------------------------------ ??? [56] 100.0% [65] 78286(57.5%) 1156(0.8%) bf-complex-mult ...develop/src/bigcomplex.rkt:31:0 bf* [73] 58.6% ??? [81] 34.5% ...higher-order.rkt:361:33 [75] 5.4% ------------------------------------------------------------------------------ reduce-to-new! [15] 1.3% for-loop [57] 98.7% [66] 22680(16.7%) 0(0.0%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [74] 98.7% ??? [80] 1.3% ------------------------------------------------------------------------------ ??? [56] 100.0% [67] 12580(9.2%) 310(0.2%) bf-complex-add .../develop/src/bigcomplex.rkt:24:0 ??? [81] 94.8% ...higher-order.rkt:361:33 [75] 2.8% ------------------------------------------------------------------------------ temp74_0 [61] 100.0% [68] 1614(1.2%) 0(0.0%) expand-single (unknown source) expand-capturing-lifts [76] 100.0% ------------------------------------------------------------------------------ ??? [58] 100.0% [69] 1362(1.0%) 1362(1.0%) ->flonum ...s/herbie/develop/src/programs.rkt:36:0 ------------------------------------------------------------------------------ for-loop [44] 24.1% for-loop [62] 75.9% [70] 1296(1.0%) 0(0.0%) mk-enode! ...bie/develop/src/core/egraph.rkt:102:0 new-enode [77] 74.4% for-loop [79] 25.6% ------------------------------------------------------------------------------ bfcanonicalize [59] 100.0% [71] 974(0.7%) 630(0.5%) bigfloat->sig+exp ...ivate/bigfloat/mpfr.rkt:372:0 new-mpz [78] 35.3% ------------------------------------------------------------------------------ ??? [64] 100.0% [72] 318(0.2%) 318(0.2%) do-chaperone-procedure ...et/private/kw.rkt:1762:2 ------------------------------------------------------------------------------ bf-complex-mult [65] 100.0% [73] 45910(33.7%) 808(0.6%) bf* ...ath/private/bigfloat/bigfloat-mpfr.rkt:95:0 ??? [81] 98.2% ------------------------------------------------------------------------------ hash-update! [66] 100.0% [74] 22378(16.4%) 980(0.7%) ??? ...s/herbie/develop/src/core/egraph.rkt:226:24 for-loop [82] 95.6% ------------------------------------------------------------------------------ bf-complex-add [67] 7.7% bf-complex-mult [65] 92.3% [75] 4570(3.4%) 1800(1.3%) ...higher-order.rkt:361:33 (unknown source) ??? [97] 60.6% ------------------------------------------------------------------------------ loop [84] 17.1% expand-single [68] 82.9% [76] 1948(1.4%) 0(0.0%) expand-capturing-lifts (unknown source) lambda-clause-expander [83] 82.9% loop [84] 17.1% ------------------------------------------------------------------------------ mk-enode! [70] 100.0% [77] 964(0.7%) 0(0.0%) new-enode ...erbie/develop/src/core/enode.rkt:95:0 type-of-enode-expr [85] 100.0% ------------------------------------------------------------------------------ bigfloat->sig+exp [71] 100.0% [78] 344(0.3%) 344(0.3%) new-mpz ...-lib/math/private/bigfloat/gmp.rkt:73:0 ------------------------------------------------------------------------------ mk-enode! [70] 100.0% [79] 332(0.2%) 332(0.2%) for-loop ...bie/develop/src/core/egraph.rkt:114:10 ------------------------------------------------------------------------------ hash-update! [66] 100.0% [80] 302(0.2%) 0(0.0%) ??? ...s/herbie/develop/src/core/egraph.rkt:349:16 for-loop [86] 100.0% ------------------------------------------------------------------------------ bf-complex-add [67] 14.2% bf-complex-mult [65] 32.1% bf* [73] 53.7% [81] 84022(61.7%) 6546(4.8%) ??? ...-racket/utils/simple-result-arrow.rkt:39:12 bfmul [87] 85.6% bfneg [89] 6.6% ------------------------------------------------------------------------------ ??? [74] 100.0% [82] 21398(15.7%) 15476(11.4%) for-loop ...bie/develop/src/core/egraph.rkt:227:26 update-en-expr [88] 27.7% ------------------------------------------------------------------------------ expand-capturing-lifts [76] 100.0% [83] 1614(1.2%) 0(0.0%) lambda-clause-expander (unknown source) finish-bodys [90] 100.0% ------------------------------------------------------------------------------ expand-capturing-lifts [76] 16.9% compile16 [51] 16.9% syntax-e/no-taint [10] 66.2% [84] 988(0.7%) 334(0.2%) loop (unknown source) gf [91] 66.2% expand-capturing-lifts [76] 16.9% ------------------------------------------------------------------------------ new-enode [77] 100.0% [85] 964(0.7%) 0(0.0%) type-of-enode-expr ...elop/src/core/enode.rkt:68:0 for-loop [92] 66.2% ??? [93] 33.8% ------------------------------------------------------------------------------ ??? [80] 100.0% [86] 302(0.2%) 0(0.0%) for-loop ...bie/develop/src/core/egraph.rkt:350:18 update-en-expr [88] 100.0% ------------------------------------------------------------------------------ ??? [81] 100.0% [87] 71928(52.8%) 2408(1.8%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:821:4 new-mpfr [94] 64.6% ??? [95] 32.0% ------------------------------------------------------------------------------ for-loop [86] 4.9% for-loop [82] 95.1% [88] 6224(4.6%) 2300(1.7%) update-en-expr ...evelop/src/core/egraph.rkt:212:0 for-loop [96] 63.0% ------------------------------------------------------------------------------ ??? [81] 100.0% [89] 5548(4.1%) 332(0.2%) bfneg ...-lib/math/private/bigfloat/mpfr.rkt:618:4 new-mpfr [94] 73.8% ??? [95] 20.2% ------------------------------------------------------------------------------ for-loop [98] 49.9% lambda-clause-expander [83] 50.1% [90] 1614(1.2%) 0(0.0%) finish-bodys (unknown source) for-loop [98] 100.0% ------------------------------------------------------------------------------ loop [84] 100.0% [91] 654(0.5%) 0(0.0%) gf (unknown source) propagation-apply-shifted [99] 50.5% propagation-merge [101] 49.5% ------------------------------------------------------------------------------ type-of-enode-expr [85] 100.0% [92] 638(0.5%) 0(0.0%) for-loop ...racket/contract/private/hash.rkt:277:6 ??? [97] 100.0% ------------------------------------------------------------------------------ type-of-enode-expr [85] 100.0% [93] 326(0.2%) 0(0.0%) ??? ...ects/racket/contract/private/hash.rkt:227:4 contract-pos/neg-doubling/proc [100]100.0% ------------------------------------------------------------------------------ sig+exp->bigfloat [60] 3.0% bfneg [89] 7.9% bfmul [87] 89.1% [94] 52170(38.3%) 52170(38.3%) new-mpfr ...b/math/private/bigfloat/mpfr.rkt:335:0 ------------------------------------------------------------------------------ sig+exp->bigfloat [60] 1.5% bfneg [89] 4.6% bfmul [87] 93.9% [95] 24518(18.0%) 24518(18.0%) ??? /home/p92/racket/collects/ffi/unsafe.rkt:898:4 ------------------------------------------------------------------------------ update-en-expr [88] 100.0% [96] 3924(2.9%) 3924(2.9%) for-loop ...rbie/develop/src/core/egraph.rkt:214:6 ------------------------------------------------------------------------------ for-loop [92] 18.7% ...higher-order.rkt:361:33 [75] 81.3% [97] 3408(2.5%) 2042(1.5%) ??? ...cts/racket/contract/private/list.rkt:209:10 ??? [104] 21.4% ??? [102] 18.7% ------------------------------------------------------------------------------ for-loop [98] 17.9% finish-bodys [90] 82.1% [98] 1614(1.2%) 960(0.7%) for-loop (unknown source) finish-bodys [90] 44.3% for-loop [98] 17.9% syntax-e [4] 2.8% ------------------------------------------------------------------------------ gf [91] 100.0% [99] 330(0.2%) 330(0.2%) propagation-apply-shifted (unknown source) ------------------------------------------------------------------------------ ??? [93] 100.0% [100] 326(0.2%) 0(0.0%) contract-pos/neg-doubling/proc ...e/guts.rkt:956:0 ??? [103] 100.0% ------------------------------------------------------------------------------ gf [91] 100.0% [101] 324(0.2%) 324(0.2%) propagation-merge (unknown source) ------------------------------------------------------------------------------ ??? [97] 100.0% [102] 638(0.5%) 0(0.0%) ??? ...ects/racket/contract/private/list.rkt:747:7 ??? [104] 100.0% ------------------------------------------------------------------------------ contract-pos/neg-doubling/proc [100]100.0% [103] 326(0.2%) 326(0.2%) ??? ...ects/racket/contract/private/list.rkt:191:2 ------------------------------------------------------------------------------ ??? [102] 46.7% ??? [97] 53.3% [104] 1366(1.0%) 1366(1.0%) ??? ...ects/racket/contract/private/guts.rkt:746:8 ------------------------------------------------------------------------------