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

\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 r49780 = x;
        double r49781 = y;
        double r49782 = 2.0;
        double r49783 = z;
        double r49784 = t;
        double r49785 = a;
        double r49786 = r49784 + r49785;
        double r49787 = sqrt(r49786);
        double r49788 = r49783 * r49787;
        double r49789 = r49788 / r49784;
        double r49790 = b;
        double r49791 = c;
        double r49792 = r49790 - r49791;
        double r49793 = 5.0;
        double r49794 = 6.0;
        double r49795 = r49793 / r49794;
        double r49796 = r49785 + r49795;
        double r49797 = 3.0;
        double r49798 = r49784 * r49797;
        double r49799 = r49782 / r49798;
        double r49800 = r49796 - r49799;
        double r49801 = r49792 * r49800;
        double r49802 = r49789 - r49801;
        double r49803 = r49782 * r49802;
        double r49804 = exp(r49803);
        double r49805 = r49781 * r49804;
        double r49806 = r49780 + r49805;
        double r49807 = r49780 / r49806;
        return r49807;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 
(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