\[\frac{x + \frac{y \cdot z - x}{t \cdot z - x}}{x + 1}\]

\frac{x + \frac{y \cdot z - x}{t \cdot z - x}}{x + 1}

double f(double x, double y, double z, double t) {
        double r129983323 = x;
        double r129983324 = y;
        double r129983325 = z;
        double r129983326 = r129983324 * r129983325;
        double r129983327 = r129983326 - r129983323;
        double r129983328 = t;
        double r129983329 = r129983328 * r129983325;
        double r129983330 = r129983329 - r129983323;
        double r129983331 = r129983327 / r129983330;
        double r129983332 = r129983323 + r129983331;
        double r129983333 = 1.0;
        double r129983334 = r129983323 + r129983333;
        double r129983335 = r129983332 / r129983334;
        return r129983335;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019173 
(FPCore (x y z t)
  :name "Diagrams.Trail:splitAtParam  from diagrams-lib-1.3.0.3, A"

  :herbie-target
  (/ (+ x (- (/ y (- t (/ x z))) (/ x (- (* t z) x)))) (+ x 1.0))

  (/ (+ x (/ (- (* y z) x) (- (* t z) x))) (+ x 1.0)))

Backtrace

hash-ref: no value found for key key: #<enode 695(695)>		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