Profiling results ----------------- Total cpu time observed: 12488ms (out of 12580ms) Number of samples taken: 58 (once every 215ms) (Hiding functions with self<1.0% and local<2.0%: 1 of 110 hidden) ======================================================================= Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ======================================================================= [1] 12488(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [7] 100.0% ----------------------------------------------------------------------- ??? [47] 100.0% [2] 440(3.5%) 0(0.0%) approximate9 ...y-regraph/src/core/taylor.rkt:11:0 loop [8] 100.0% ----------------------------------------------------------------------- map [70] 100.0% [3] 220(1.8%) 0(0.0%) parse-loop74 (unknown source) eval-const-expr [9] 100.0% ----------------------------------------------------------------------- hash-ref! [50] 100.0% [4] 220(1.8%) 0(0.0%) ??? ...simplify-regraph/src/core/taylor.rkt:290:26 for-loop [11] 100.0% ----------------------------------------------------------------------- hash-ref! [50] 100.0% [5] 220(1.8%) 0(0.0%) ??? ...simplify-regraph/src/core/taylor.rkt:300:23 for-loop [10] 100.0% ----------------------------------------------------------------------- for-loop [97] 100.0% [6] 204(1.6%) 0(0.0%) syntax-e (unknown source) syntax-e/no-taint [12] 100.0% ----------------------------------------------------------------------- ??? [1] 100.0% [7] 12488(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [13] 100.0% ----------------------------------------------------------------------- approximate9 [2] 100.0% [8] 440(3.5%) 0(0.0%) loop .../simplify-regraph/src/core/taylor.rkt:86:4 ??? [47] 100.0% ----------------------------------------------------------------------- parse-loop74 [3] 100.0% [9] 220(1.8%) 0(0.0%) eval-const-expr ...-regraph/src/programs.rkt:120:0 temp85_0 [53] 100.0% ----------------------------------------------------------------------- ??? [5] 100.0% [10] 220(1.8%) 0(0.0%) for-loop ...ify-regraph/src/core/taylor.rkt:303:27 hash-ref! [50] 100.0% ----------------------------------------------------------------------- ??? [4] 100.0% [11] 220(1.8%) 0(0.0%) for-loop ...ify-regraph/src/core/taylor.rkt:290:52 ??? [14] 100.0% ----------------------------------------------------------------------- syntax-e [6] 100.0% [12] 204(1.6%) 0(0.0%) syntax-e/no-taint (unknown source) loop [92] 100.0% ----------------------------------------------------------------------- profile-thunk16 [7] 100.0% [13] 12488(100.0%) 0(0.0%) run ...et-7.5/share/pkgs/profile-lib/main.rkt:39:2 .../more-scheme.rkt:261:28 [15]100.0% ----------------------------------------------------------------------- for-loop [11] 100.0% [14] 220(1.8%) 0(0.0%) ??? ...simplify-regraph/src/core/taylor.rkt:293:19 hash-ref! [50] 100.0% ----------------------------------------------------------------------- for-loop [51] 1.6% run [13] 98.4% [15] 12488(100.0%) 196(1.6%) .../more-scheme.rkt:261:28 (unknown source) run-improve47 [16] 72.3% prepare-points-intervals [17] 22.6% errors [48] 1.6% ??? [18] 0.9% ----------------------------------------------------------------------- .../more-scheme.rkt:261:28 [15]100.0% [16] 9032(72.3%) 0(0.0%) run-improve47 ...fy-regraph/src/mainloop.rkt:346:0 for-loop [19] 97.7% finalize-iter! [28] 2.3% ----------------------------------------------------------------------- .../more-scheme.rkt:261:28 [15]100.0% [17] 2820(22.6%) 0(0.0%) prepare-points-intervals ...h/src/points.rkt:120:0 loop [20] 100.0% ----------------------------------------------------------------------- .../more-scheme.rkt:261:28 [15]100.0% [18] 216(1.7%) 0(0.0%) ??? ...mplify-regraph/src/syntax/syntax.rkt:214:17 return/no-unsupplied [21] 100.0% ----------------------------------------------------------------------- run-improve47 [16] 100.0% [19] 8828(70.7%) 0(0.0%) for-loop ...implify-regraph/src/mainloop.rkt:365:4 run-iter! [22] 100.0% ----------------------------------------------------------------------- prepare-points-intervals [17] 100.0% [20] 2820(22.6%) 610(4.9%) loop ...rbie/simplify-regraph/src/points.rkt:132:4 loop [23] 71.3% ??? [24] 7.1% ----------------------------------------------------------------------- ??? [18] 100.0% [21] 216(1.7%) 216(1.7%) return/no-unsupplied ...ct/private/arr-i.rkt:566:0 ----------------------------------------------------------------------- for-loop [19] 100.0% [22] 8828(70.7%) 0(0.0%) run-iter! ...mplify-regraph/src/mainloop.rkt:327:0 simplify! [25] 90.4% gen-series! [27] 5.0% localize! [29] 2.3% finalize-iter! [28] 2.3% ----------------------------------------------------------------------- loop [20] 100.0% [23] 2010(16.1%) 200(1.6%) loop ...erbie/simplify-regraph/src/points.rkt:79:2 ??? [26] 70.1% ??? [47] 19.9% ----------------------------------------------------------------------- loop [20] 100.0% [24] 200(1.6%) 200(1.6%) ??? ...erbie/simplify-regraph/src/points.rkt:113:6 ----------------------------------------------------------------------- run-iter! [22] 100.0% [25] 7982(63.9%) 0(0.0%) simplify! ...mplify-regraph/src/mainloop.rkt:224:0 ??? [30] 100.0% ----------------------------------------------------------------------- loop [23] 100.0% [26] 1410(11.3%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:379:33 ival-sqrt [31] 43.0% ival-div [32] 42.8% ival-sub [36] 14.2% ----------------------------------------------------------------------- run-iter! [22] 100.0% [27] 440(3.5%) 0(0.0%) gen-series! ...lify-regraph/src/mainloop.rkt:160:0 for-loop [33] 100.0% ----------------------------------------------------------------------- run-iter! [22] 49.5% run-improve47 [16] 50.5% [28] 404(3.2%) 0(0.0%) finalize-iter! ...y-regraph/src/mainloop.rkt:278:0 ??? [34] 100.0% ----------------------------------------------------------------------- run-iter! [22] 100.0% [29] 206(1.6%) 0(0.0%) localize! ...mplify-regraph/src/mainloop.rkt:127:0 localize-error [35] 100.0% ----------------------------------------------------------------------- simplify! [25] 100.0% [30] 7982(63.9%) 0(0.0%) ??? ...simplify-regraph/src/core/simplify.rkt:38:0 ??? [37] 100.0% ----------------------------------------------------------------------- ??? [26] 100.0% [31] 606(4.9%) 200(1.6%) ival-sqrt ...ify-regraph/src/biginterval.rkt:212:0 bfsqrt [39] 67.0% ----------------------------------------------------------------------- ??? [26] 100.0% [32] 604(4.8%) 404(3.2%) ival-div ...lify-regraph/src/biginterval.rkt:156:0 bfmul [59] 33.1% ----------------------------------------------------------------------- gen-series! [27] 100.0% [33] 440(3.5%) 0(0.0%) for-loop ...implify-regraph/src/mainloop.rkt:167:7 taylor-alt [38] 100.0% ----------------------------------------------------------------------- finalize-iter! [28] 100.0% [34] 404(3.2%) 0(0.0%) ??? ...contract/private/arrow-val-first.rkt:486:18 atab-add-altns [40] 50.5% for-loop [41] 49.5% ----------------------------------------------------------------------- localize! [29] 100.0% [35] 206(1.6%) 0(0.0%) localize-error ...graph/src/core/localize.rkt:58:0 hash-ref! [50] 100.0% ----------------------------------------------------------------------- ??? [26] 100.0% [36] 200(1.6%) 200(1.6%) ival-sub ...lify-regraph/src/biginterval.rkt:108:0 ----------------------------------------------------------------------- ??? [30] 100.0% [37] 7982(63.9%) 0(0.0%) ??? ...simplify-regraph/src/core/simplify.rkt:56:0 for-loop [42] 100.0% ----------------------------------------------------------------------- for-loop [33] 100.0% [38] 440(3.5%) 0(0.0%) taylor-alt ...plify-regraph/src/mainloop.rkt:146:0 for-loop [43] 100.0% ----------------------------------------------------------------------- ival-sqrt [31] 100.0% [39] 406(3.3%) 0(0.0%) bfsqrt ...lib/math/private/bigfloat/mpfr.rkt:632:4 ??? [80] 50.7% new-mpfr [45] 49.3% ----------------------------------------------------------------------- ??? [34] 100.0% [40] 204(1.6%) 0(0.0%) atab-add-altns ...raph/src/core/alt-table.rkt:40:0 atab-add-altn [44] 100.0% ----------------------------------------------------------------------- ??? [34] 100.0% [41] 200(1.6%) 0(0.0%) for-loop ...fy-regraph/src/core/alt-table.rkt:46:2 errors [48] 100.0% ----------------------------------------------------------------------- ??? [37] 100.0% [42] 7982(63.9%) 0(0.0%) for-loop ...ify-regraph/src/core/simplify.rkt:76:2 for-loop [46] 100.0% ----------------------------------------------------------------------- taylor-alt [38] 100.0% [43] 440(3.5%) 0(0.0%) for-loop ...implify-regraph/src/mainloop.rkt:152:6 ??? [47] 100.0% ----------------------------------------------------------------------- atab-add-altns [40] 100.0% [44] 204(1.6%) 0(0.0%) atab-add-altn ...raph/src/core/alt-table.rkt:194:0 errors [48] 100.0% ----------------------------------------------------------------------- bfsqrt [39] 100.0% [45] 200(1.6%) 200(1.6%) new-mpfr ...b/math/private/bigfloat/mpfr.rkt:348:0 ----------------------------------------------------------------------- for-loop [42] 100.0% [46] 7982(63.9%) 0(0.0%) for-loop ...ify-regraph/src/core/simplify.rkt:80:4 ??? [49] 89.9% loop [54] 5.1% prune-phase [56] 5.0% ----------------------------------------------------------------------- loop [8] 17.5% location-do [52] 17.5% for-loop [43] 17.5% loop [23] 47.6% [47] 840(6.7%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:375:33 ival-mult [55] 47.6% location-do [52] 17.5% approximate9 [2] 17.5% hash-ref! [50] 17.5% ----------------------------------------------------------------------- for-loop [41] 24.5% atab-add-altn [44] 25.0% .../more-scheme.rkt:261:28 [15] 50.5% [48] 816(6.5%) 0(0.0%) errors ...ie/simplify-regraph/src/points.rkt:190:0 for-loop [51] 75.0% temp85_0 [53] 25.0% ----------------------------------------------------------------------- for-loop [46] 100.0% [49] 7176(57.5%) 0(0.0%) ??? .../p92/.racket/7.5/pkgs/regraph/main.rkt:42:0 for-loop [57] 61.3% find-matches [58] 38.7% ----------------------------------------------------------------------- ??? [14] 11.4% for-loop [10] 11.4% ??? [60] 22.7% ??? [47] 22.7% localize-error [35] 31.9% [50] 646(5.2%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 parse-loop15 [66] 31.9% ??? [60] 22.7% ??? [5] 11.4% f40 [65] 11.4% ??? [4] 11.4% simplify [64] 11.4% ----------------------------------------------------------------------- errors [48] 100.0% [51] 612(4.9%) 200(1.6%) for-loop .../simplify-regraph/src/points.rkt:192:2 .../more-scheme.rkt:261:28 [15] 67.3% ----------------------------------------------------------------------- location-do [52] 25.0% ??? [47] 75.0% [52] 440(3.5%) 0(0.0%) location-do ...plify-regraph/src/programs.rkt:63:0 ??? [47] 75.0% location-do [52] 25.0% ----------------------------------------------------------------------- errors [48] 48.1% eval-const-expr [9] 51.9% [53] 424(3.4%) 0(0.0%) temp85_0 (unknown source) compile15 [61] 100.0% ----------------------------------------------------------------------- for-loop [46] 100.0% [54] 406(3.3%) 0(0.0%) loop ...acket/7.5/pkgs/regraph/extraction.rkt:25:2 for-loop [62] 100.0% ----------------------------------------------------------------------- ??? [47] 100.0% [55] 400(3.2%) 0(0.0%) ival-mult ...ify-regraph/src/biginterval.rkt:120:0 bfmul [59] 100.0% ----------------------------------------------------------------------- for-loop [46] 100.0% [56] 400(3.2%) 0(0.0%) prune-phase ...cket/7.5/pkgs/regraph/main.rkt:70:0 for-loop [63] 100.0% ----------------------------------------------------------------------- ??? [49] 100.0% [57] 4400(35.2%) 0(0.0%) for-loop ....racket/7.5/pkgs/regraph/main.rkt:45:2 for-loop [67] 100.0% ----------------------------------------------------------------------- ??? [49] 100.0% [58] 2776(22.2%) 0(0.0%) find-matches ...ket/7.5/pkgs/regraph/main.rkt:34:0 for-loop [68] 100.0% ----------------------------------------------------------------------- ival-div [32] 33.3% ival-mult [55] 66.7% [59] 600(4.8%) 0(0.0%) bfmul ...-lib/math/private/bigfloat/mpfr.rkt:835:4 ??? [80] 100.0% ----------------------------------------------------------------------- hash-ref! [50] 100.0% [60] 440(3.5%) 0(0.0%) ??? .../simplify-regraph/src/core/taylor.rkt:44:15 hash-ref! [50] 100.0% ----------------------------------------------------------------------- temp85_0 [53] 100.0% [61] 424(3.4%) 0(0.0%) compile15 (unknown source) temp91_0 [69] 100.0% ----------------------------------------------------------------------- loop [54] 100.0% [62] 406(3.3%) 206(1.6%) for-loop ...t/7.5/pkgs/regraph/extraction.rkt:28:4 for-loop [72] 49.3% ----------------------------------------------------------------------- prune-phase [56] 100.0% [63] 400(3.2%) 0(0.0%) for-loop ....racket/7.5/pkgs/regraph/main.rkt:73:2 update-leader! [78] 100.0% ----------------------------------------------------------------------- hash-ref! [50] 100.0% [64] 220(1.8%) 220(1.8%) simplify ...plify-regraph/src/core/reduce.rkt:16:0 ----------------------------------------------------------------------- map [70] 50.0% hash-ref! [50] 50.0% [65] 220(1.8%) 0(0.0%) f40 (unknown source) map [70] 100.0% ----------------------------------------------------------------------- hash-ref! [50] 100.0% [66] 206(1.6%) 0(0.0%) parse-loop15 (unknown source) for-loop [71] 100.0% ----------------------------------------------------------------------- for-loop [57] 100.0% [67] 4400(35.2%) 0(0.0%) for-loop ....racket/7.5/pkgs/regraph/main.rkt:48:4 merge-egraph-nodes! [73] 76.8% dedup-children! [79] 14.1% mk-enode-rec! [98] 9.1% ----------------------------------------------------------------------- for-loop [68] 50.0% find-matches [58] 50.0% [68] 2776(22.2%) 0(0.0%) for-loop ....racket/7.5/pkgs/regraph/main.rkt:36:2 for-loop [68] 50.0% match-e [74] 50.0% ----------------------------------------------------------------------- compile15 [61] 100.0% [69] 424(3.4%) 0(0.0%) temp91_0 (unknown source) temp118_0 [75] 100.0% ----------------------------------------------------------------------- f40 [65] 100.0% [70] 220(1.8%) 0(0.0%) map ...t-7.5/collects/racket/private/map.rkt:35:13 f40 [65] 50.0% parse-loop74 [3] 50.0% ----------------------------------------------------------------------- parse-loop15 [66] 100.0% [71] 206(1.6%) 0(0.0%) for-loop ...fy-regraph/src/core/localize.rkt:45:21 for-loop [76] 100.0% ----------------------------------------------------------------------- for-loop [62] 100.0% [72] 200(1.6%) 200(1.6%) for-loop .../7.5/pkgs/regraph/extraction.rkt:36:16 ----------------------------------------------------------------------- for-loop [82] 3.3% for-loop [67] 96.7% [73] 3378(27.0%) 0(0.0%) merge-egraph-nodes! ...gs/regraph/egraph.rkt:144:0 update-leader! [78] 45.9% loop! [96] 29.8% dedup-children! [79] 15.0% enode-merge! [83] 5.9% for-loop [82] 3.3% ----------------------------------------------------------------------- for-loop [85] 24.6% for-loop [68] 75.4% [74] 2776(22.2%) 1166(9.3%) match-e ...racket/7.5/pkgs/regraph/ematch.rkt:35:0 for-loop [77] 68.0% ----------------------------------------------------------------------- temp91_0 [69] 100.0% [75] 424(3.4%) 0(0.0%) temp118_0 (unknown source) expand-capturing-lifts [81] 100.0% ----------------------------------------------------------------------- for-loop [71] 100.0% [76] 206(1.6%) 0(0.0%) for-loop ...fy-regraph/src/core/localize.rkt:46:23 ??? [80] 100.0% ----------------------------------------------------------------------- match-e [74] 100.0% [77] 2168(17.4%) 810(6.5%) for-loop ...cket/7.5/pkgs/regraph/ematch.rkt:41:11 for-loop [85] 44.4% step [89] 13.9% foldl [90] 9.2% do-curry [91] 9.2% ----------------------------------------------------------------------- for-loop [63] 20.5% merge-egraph-nodes! [73] 79.5% [78] 1952(15.6%) 0(0.0%) update-leader! ....5/pkgs/regraph/egraph.rkt:211:0 for-loop [84] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [73] 49.8% for-loop [67] 50.2% [79] 1240(9.9%) 0(0.0%) dedup-children! ....5/pkgs/regraph/enode.rkt:166:0 loop [86] 64.4% loop [87] 35.6% ----------------------------------------------------------------------- for-loop [76] 20.4% bfsqrt [39] 20.4% bfmul [59] 59.3% [80] 1012(8.1%) 1012(8.1%) ??? /opt/racket-7.5/collects/ffi/unsafe.rkt:938:4 ----------------------------------------------------------------------- temp118_0 [75] 100.0% [81] 424(3.4%) 0(0.0%) expand-capturing-lifts (unknown source) lambda-clause-expander [88] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [73] 100.0% [82] 220(1.8%) 0(0.0%) for-loop ...cket/7.5/pkgs/regraph/egraph.rkt:197:4 merge-egraph-nodes! [73] 100.0% ----------------------------------------------------------------------- merge-egraph-nodes! [73] 100.0% [83] 200(1.6%) 0(0.0%) enode-merge! ...et/7.5/pkgs/regraph/enode.rkt:95:0 custom-set-union [101] 100.0% ----------------------------------------------------------------------- update-leader! [78] 100.0% [84] 1952(15.6%) 0(0.0%) for-loop ...cket/7.5/pkgs/regraph/egraph.rkt:216:6 hash-update! [95] 59.0% for-loop [93] 41.0% ----------------------------------------------------------------------- for-loop [77] 100.0% [85] 1366(10.9%) 0(0.0%) for-loop ...cket/7.5/pkgs/regraph/ematch.rkt:47:37 match-e [74] 100.0% ----------------------------------------------------------------------- dedup-children! [79] 9.5% loop [86] 90.5% [86] 798(6.4%) 798(6.4%) loop ...racket-7.5/collects/racket/list.rkt:434:17 loop [86] 90.5% ----------------------------------------------------------------------- dedup-children! [79] 10.6% loop [87] 89.4% [87] 442(3.5%) 0(0.0%) loop ...racket-7.5/collects/racket/list.rkt:417:34 loop [87] 89.4% loop [92] 10.6% ----------------------------------------------------------------------- expand-capturing-lifts [81] 100.0% [88] 424(3.4%) 0(0.0%) lambda-clause-expander (unknown source) finish-bodys [94] 100.0% ----------------------------------------------------------------------- for-loop [77] 100.0% [89] 400(3.2%) 400(3.2%) step ...ket-7.5/collects/racket/function.rkt:145:9 ----------------------------------------------------------------------- for-loop [77] 100.0% [90] 200(1.6%) 200(1.6%) foldl ....5/collects/racket/private/list.rkt:229:4 ----------------------------------------------------------------------- for-loop [77] 100.0% [91] 200(1.6%) 200(1.6%) do-curry ...-7.5/collects/racket/function.rkt:71:2 ----------------------------------------------------------------------- loop! [96] 2.4% syntax-e/no-taint [12] 10.9% mk-enode-rec! [98] 21.3% loop [87] 23.6% loop [92] 41.7% [92] 1876(15.0%) 666(5.3%) loop (unknown source) loop [92] 41.7% mk-enode-rec! [98] 21.3% gf [99] 10.9% loop! [96] 2.4% ----------------------------------------------------------------------- for-loop [84] 100.0% [93] 800(6.4%) 0(0.0%) for-loop ...cket/7.5/pkgs/regraph/egraph.rkt:217:8 hash-update! [95] 100.0% ----------------------------------------------------------------------- lambda-clause-expander [88] 38.0% for-loop [97] 62.0% [94] 424(3.4%) 0(0.0%) finish-bodys (unknown source) for-loop [97] 100.0% ----------------------------------------------------------------------- for-loop [93] 41.0% for-loop [84] 59.0% [95] 1952(15.6%) 0(0.0%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [100] 100.0% ----------------------------------------------------------------------- loop [92] 30.1% merge-egraph-nodes! [73] 69.9% [96] 1008(8.1%) 406(3.3%) loop! .../.racket/7.5/pkgs/regraph/enode.rkt:158:2 custom-set-union [101] 39.9% loop [92] 30.1% set [104] 9.9% ----------------------------------------------------------------------- for-loop [97] 16.0% finish-bodys [94] 84.0% [97] 424(3.4%) 0(0.0%) for-loop (unknown source) finish-bodys [94] 50.0% expand-implicit [102] 25.9% for-loop [97] 16.0% syntax-e [6] 8.0% ----------------------------------------------------------------------- loop [92] 50.0% for-loop [67] 50.0% [98] 400(3.2%) 400(3.2%) mk-enode-rec! ...7.5/pkgs/regraph/egraph.rkt:116:0 loop [92] 50.0% ----------------------------------------------------------------------- loop [92] 100.0% [99] 204(1.6%) 0(0.0%) gf (unknown source) propagation-apply [103] 100.0% ----------------------------------------------------------------------- hash-update! [95] 100.0% [100] 1952(15.6%) 0(0.0%) ??? .../.racket/7.5/pkgs/regraph/egraph.rkt:219:24 for-loop [105] 100.0% ----------------------------------------------------------------------- enode-merge! [83] 33.2% loop! [96] 66.8% [101] 602(4.8%) 402(3.2%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [107] 33.2% ----------------------------------------------------------------------- for-loop [97] 100.0% [102] 220(1.8%) 0(0.0%) expand-implicit (unknown source) binding-lookup52 [106] 100.0% ----------------------------------------------------------------------- gf [99] 100.0% [103] 204(1.6%) 204(1.6%) propagation-apply (unknown source) ----------------------------------------------------------------------- loop! [96] 100.0% [104] 200(1.6%) 200(1.6%) set ...collects/racket/private/set-types.rkt:992:0 ----------------------------------------------------------------------- ??? [100] 100.0% [105] 1952(15.6%) 1752(14.0%) for-loop ...ket/7.5/pkgs/regraph/egraph.rkt:220:26 update-en-expr [109] 10.2% ----------------------------------------------------------------------- expand-implicit [102] 100.0% [106] 220(1.8%) 220(1.8%) binding-lookup52 (unknown source) ----------------------------------------------------------------------- custom-set-union [101] 100.0% [107] 200(1.6%) 0(0.0%) for-loop ...cts/racket/private/set-types.rkt:174:3 for-loop [108] 100.0% ----------------------------------------------------------------------- for-loop [107] 100.0% [108] 200(1.6%) 200(1.6%) for-loop ...cts/racket/private/set-types.rkt:178:5 ----------------------------------------------------------------------- for-loop [105] 100.0% [109] 200(1.6%) 200(1.6%) update-en-expr ....5/pkgs/regraph/egraph.rkt:205:0 -----------------------------------------------------------------------