Profiling results
-----------------
  Total cpu time observed: 400ms (out of 468ms)
  Number of samples taken: 2 (once every 200ms)

==================================================================
                              Caller
 Idx  Total       Self      Name+src                        Local%
      ms(pct)     ms(pct)     Callee
==================================================================
 [1] 400(100.0%)   0(0.0%)  ??? ...lects/racket/private/more-scheme.rkt:261:28
                              profile-thunk16 [2]           100.0%
------------------------------------------------------------------
                              ??? [1]                       100.0%
 [2] 400(100.0%)   0(0.0%)  profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0
                              run [3]                       100.0%
------------------------------------------------------------------
                              profile-thunk16 [2]           100.0%
 [3] 400(100.0%)   0(0.0%)  run ...et-7.5/share/pkgs/profile-lib/main.rkt:39:2
                              select-handler/no-breaks [4]   50.0%
                              .../more-scheme.rkt:261:28 [5] 50.0%
------------------------------------------------------------------
                              run [3]                       100.0%
 [4] 200(50.0%)    0(0.0%)  select-handler/no-breaks .../more-scheme.rkt:163:2
                              on-exception [6]              100.0%
------------------------------------------------------------------
                              run [3]                       100.0%
 [5] 200(50.0%)    0(0.0%)  .../more-scheme.rkt:261:28 (unknown source)
                              run-improve47 [7]             100.0%
------------------------------------------------------------------
                              select-handler/no-breaks [4]  100.0%
 [6] 200(50.0%)  200(50.0%) on-exception ...val-pow-test/src/sandbox.rkt:107:2
------------------------------------------------------------------
                              .../more-scheme.rkt:261:28 [5]100.0%
 [7] 200(50.0%)    0(0.0%)  run-improve47 ...l-pow-test/src/mainloop.rkt:346:0
                              prepare-points-intervals [8]  100.0%
------------------------------------------------------------------
                              run-improve47 [7]             100.0%
 [8] 200(50.0%)    0(0.0%)  prepare-points-intervals ...t/src/points.rkt:120:0
                              loop [9]                      100.0%
------------------------------------------------------------------
                              prepare-points-intervals [8]  100.0%
 [9] 200(50.0%)    0(0.0%)  loop .../herbie/ival-pow-test/src/points.rkt:132:4
                              loop [10]                     100.0%
------------------------------------------------------------------
                              loop [9]                      100.0%
[10] 200(50.0%)    0(0.0%)  loop ...s/herbie/ival-pow-test/src/points.rkt:79:2
                              ??? [11]                      100.0%
------------------------------------------------------------------
                              loop [10]                     100.0%
[11] 200(50.0%)    0(0.0%)  ??? ...tract/private/arrow-higher-order.rkt:379:33
                              ival-sqrt [12]                100.0%
------------------------------------------------------------------
                              ??? [11]                      100.0%
[12] 200(50.0%)  200(50.0%) ival-sqrt ...al-pow-test/src/biginterval.rkt:212:0
------------------------------------------------------------------