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

\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 r35768 = x;
        double r35769 = y;
        double r35770 = 1.0;
        double r35771 = r35769 - r35770;
        double r35772 = z;
        double r35773 = r35771 * r35772;
        double r35774 = r35768 - r35773;
        double r35775 = t;
        double r35776 = r35775 - r35770;
        double r35777 = a;
        double r35778 = r35776 * r35777;
        double r35779 = r35774 - r35778;
        double r35780 = r35769 + r35775;
        double r35781 = 2.0;
        double r35782 = r35780 - r35781;
        double r35783 = b;
        double r35784 = r35782 * r35783;
        double r35785 = r35779 + r35784;
        return r35785;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 
(FPCore (x y z t a b)
  :name "Statistics.Distribution.Beta:$centropy from math-functions-0.1.5.2"
  :precision binary64
  (+ (- (- x (* (- y 1) z)) (* (- t 1) a)) (* (- (+ y t) 2) b)))

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