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

\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 r8268 = x;
        double r8269 = y;
        double r8270 = 2.0;
        double r8271 = z;
        double r8272 = t;
        double r8273 = a;
        double r8274 = r8272 + r8273;
        double r8275 = sqrt(r8274);
        double r8276 = r8271 * r8275;
        double r8277 = r8276 / r8272;
        double r8278 = b;
        double r8279 = c;
        double r8280 = r8278 - r8279;
        double r8281 = 5.0;
        double r8282 = 6.0;
        double r8283 = r8281 / r8282;
        double r8284 = r8273 + r8283;
        double r8285 = 3.0;
        double r8286 = r8272 * r8285;
        double r8287 = r8270 / r8286;
        double r8288 = r8284 - r8287;
        double r8289 = r8280 * r8288;
        double r8290 = r8277 - r8289;
        double r8291 = r8270 * r8290;
        double r8292 = exp(r8291);
        double r8293 = r8269 * r8292;
        double r8294 = r8268 + r8293;
        double r8295 = r8268 / r8294;
        return r8295;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y z t a b c)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2"
  (/ x (+ x (* y (exp (* 2.0 (- (/ (* z (sqrt (+ t a))) t) (* (- b c) (- (+ a (/ 5.0 6.0)) (/ 2.0 (* t 3.0)))))))))))

Backtrace

get-representation: Unknown representation #f		L	C
loop	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	122	4
prepare-points	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	146	0
setup-prog!34	/data/pavpan/nightlies/herbie/interface2/src/mainloop.rkt	67	0
run-improve43	/data/pavpan/nightlies/herbie/interface2/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