Error in 25.6s

Runtime

Time bar (total: 25.6s)Debug logProfile

Please include this information when filing a bug report:

herbie shell --seed 2018195 
(FPCore (f n)
  :name "subtraction fraction"
  (/ (- (+ f n)) (- f n)))

Backtrace

nan?: contract violation expected: real? given: 0+1iLC
nan?/usr/share/racket/collects/racket/math.rkt252
loop/usr/share/racket/collects/racket/private/map.rkt11223
(unnamed)/usr/share/racket/collects/racket/private/norm-define.rkt5383
core22/usr/share/racket/collects/racket/private/norm-define.rkt5383
(unnamed)/usr/share/racket/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-improve50/data/pavpan/nightlies/herbie/remove-backup-simplify/src/mainloop.rkt2340
(unnamed)/usr/share/racket/collects/racket/private/more-scheme.rkt26128
run/usr/share/racket/pkgs/profile-lib/main.rkt392
profile-thunk16/usr/share/racket/pkgs/profile-lib/main.rkt90
(unnamed)/usr/share/racket/collects/racket/private/more-scheme.rkt26128