\[\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}\]

\frac{x}{x + y \cdot e^{2 \cdot \left(\frac{z \cdot \sqrt{t + a}}{t} - \left(b - c\right) \cdot \left(\left(a + \frac{5}{6}\right) - \frac{2}{t \cdot 3}\right)\right)}}

double f(double x, double y, double z, double t, double a, double b, double c) {
        double r62923 = x;
        double r62924 = y;
        double r62925 = 2.0;
        double r62926 = z;
        double r62927 = t;
        double r62928 = a;
        double r62929 = r62927 + r62928;
        double r62930 = sqrt(r62929);
        double r62931 = r62926 * r62930;
        double r62932 = r62931 / r62927;
        double r62933 = b;
        double r62934 = c;
        double r62935 = r62933 - r62934;
        double r62936 = 5.0;
        double r62937 = 6.0;
        double r62938 = r62936 / r62937;
        double r62939 = r62928 + r62938;
        double r62940 = 3.0;
        double r62941 = r62927 * r62940;
        double r62942 = r62925 / r62941;
        double r62943 = r62939 - r62942;
        double r62944 = r62935 * r62943;
        double r62945 = r62932 - r62944;
        double r62946 = r62925 * r62945;
        double r62947 = exp(r62946);
        double r62948 = r62924 * r62947;
        double r62949 = r62923 + r62948;
        double r62950 = r62923 / r62949;
        return r62950;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 +o rules:numerics
(FPCore (x y z t a b c)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2"
  :precision binary64
  (/ x (+ x (* y (exp (* 2 (- (/ (* z (sqrt (+ t a))) t) (* (- b c) (- (+ a (/ 5 6)) (/ 2 (* t 3)))))))))))

Backtrace

get-representation: Unknown representation real		L	C
(unnamed)	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	65	3
filter	/opt/racket-7.2/collects/racket/private/list.rkt	256	2
infer-splitpoints	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	34	0
get-final-combination	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/mainloop.rkt	369	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28