\[\left(\left(x - \left(y - 1\right) \cdot z\right) - \left(t - 1\right) \cdot a\right) + \left(\left(y + t\right) - 2\right) \cdot b\]

\left(\left(x - \left(y - 1\right) \cdot z\right) - \left(t - 1\right) \cdot a\right) + \left(\left(y + t\right) - 2\right) \cdot b

double f(double x, double y, double z, double t, double a, double b) {
        double r8041 = x;
        double r8042 = y;
        double r8043 = 1.0;
        double r8044 = r8042 - r8043;
        double r8045 = z;
        double r8046 = r8044 * r8045;
        double r8047 = r8041 - r8046;
        double r8048 = t;
        double r8049 = r8048 - r8043;
        double r8050 = a;
        double r8051 = r8049 * r8050;
        double r8052 = r8047 - r8051;
        double r8053 = r8042 + r8048;
        double r8054 = 2.0;
        double r8055 = r8053 - r8054;
        double r8056 = b;
        double r8057 = r8055 * r8056;
        double r8058 = r8052 + r8057;
        return r8058;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 +o rules:numerics
(FPCore (x y z t a b)
  :name "Statistics.Distribution.Beta:$centropy from math-functions-0.1.5.2"
  (+ (- (- x (* (- y 1.0) z)) (* (- t 1.0) a)) (* (- (+ y t) 2.0) b)))

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