Error in 4.5s

Runtime

Time bar (total: 4.5s)Debug logProfile

Please include this information when filing a bug report:

herbie shell --seed 2020178 +o rules:numerics
(FPCore (x)
  :name "Hyperbolic arc-cosine"
  (log (+ x (sqrt (- (* x x) 1)))))

Backtrace

nan?: contract violation expected: real? given: 0+1/2iLC
has-nan?/data/pavpan/nightlies/herbie/remove-backup-simplify/src/core/simplify.rkt920
ormap/opt/racket-7.5/collects/racket/private/map.rkt14113
loop/opt/racket-7.5/collects/racket/private/map.rkt14923
(unnamed)/data/pavpan/nightlies/herbie/remove-backup-simplify/src/core/simplify.rkt770
unpack24/data/pavpan/nightlies/herbie/remove-backup-simplify/src/core/simplify.rkt430
(unnamed)/opt/racket-7.5/collects/racket/private/more-scheme.rkt26128
for-loop/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt1596
simplify!/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt1550
run-iter!/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt2150
for-loop/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt24910
run-improve41/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt2340
(unnamed)/opt/racket-7.5/collects/racket/private/more-scheme.rkt26128
run/opt/racket-7.5/share/pkgs/profile-lib/main.rkt392
profile-thunk16/opt/racket-7.5/share/pkgs/profile-lib/main.rkt90
(unnamed)/opt/racket-7.5/collects/racket/private/more-scheme.rkt26128