\[\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.7644704999984242022037506103515625\right) \cdot y + 230661.5106160000141244381666183471679688\right) \cdot y + t}{\left(\left(\left(y + a\right) \cdot y + b\right) \cdot y + c\right) \cdot y + i}\]

\frac{\left(\left(\left(x \cdot y + z\right) \cdot y + 27464.7644704999984242022037506103515625\right) \cdot y + 230661.5106160000141244381666183471679688\right) \cdot y + t}{\left(\left(\left(y + a\right) \cdot y + b\right) \cdot y + c\right) \cdot y + i}

double f(double x, double y, double z, double t, double a, double b, double c, double i) {
        double r7904324 = x;
        double r7904325 = y;
        double r7904326 = r7904324 * r7904325;
        double r7904327 = z;
        double r7904328 = r7904326 + r7904327;
        double r7904329 = r7904328 * r7904325;
        double r7904330 = 27464.7644705;
        double r7904331 = r7904329 + r7904330;
        double r7904332 = r7904331 * r7904325;
        double r7904333 = 230661.510616;
        double r7904334 = r7904332 + r7904333;
        double r7904335 = r7904334 * r7904325;
        double r7904336 = t;
        double r7904337 = r7904335 + r7904336;
        double r7904338 = a;
        double r7904339 = r7904325 + r7904338;
        double r7904340 = r7904339 * r7904325;
        double r7904341 = b;
        double r7904342 = r7904340 + r7904341;
        double r7904343 = r7904342 * r7904325;
        double r7904344 = c;
        double r7904345 = r7904343 + r7904344;
        double r7904346 = r7904345 * r7904325;
        double r7904347 = i;
        double r7904348 = r7904346 + r7904347;
        double r7904349 = r7904337 / r7904348;
        return r7904349;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019173 +o rules:numerics
(FPCore (x y z t a b c i)
  :name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2"
  (/ (+ (* (+ (* (+ (* (+ (* x y) z) y) 27464.7644705) y) 230661.510616) y) t) (+ (* (+ (* (+ (* (+ y a) y) b) y) c) y) i)))

Backtrace

hash-ref: no value found for key key: #<enode 426(426)>		L	C
for-loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	197	2
extractor-extract	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	196	0
for-loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	35	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	217	0
run-iter!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	320	0
for-loop	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	354	4
run-improve43	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	339	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28