\[\left(\left(\left(\left(\left(\left(x \cdot 18\right) \cdot y\right) \cdot z\right) \cdot t - \left(a \cdot 4\right) \cdot t\right) + b \cdot c\right) - \left(x \cdot 4\right) \cdot i\right) - \left(j \cdot 27\right) \cdot k\]

\left(\left(\left(\left(\left(\left(x \cdot 18\right) \cdot y\right) \cdot z\right) \cdot t - \left(a \cdot 4\right) \cdot t\right) + b \cdot c\right) - \left(x \cdot 4\right) \cdot i\right) - \left(j \cdot 27\right) \cdot k

double f(double x, double y, double z, double t, double a, double b, double c, double i, double j, double k) {
        double r8616 = x;
        double r8617 = 18.0;
        double r8618 = r8616 * r8617;
        double r8619 = y;
        double r8620 = r8618 * r8619;
        double r8621 = z;
        double r8622 = r8620 * r8621;
        double r8623 = t;
        double r8624 = r8622 * r8623;
        double r8625 = a;
        double r8626 = 4.0;
        double r8627 = r8625 * r8626;
        double r8628 = r8627 * r8623;
        double r8629 = r8624 - r8628;
        double r8630 = b;
        double r8631 = c;
        double r8632 = r8630 * r8631;
        double r8633 = r8629 + r8632;
        double r8634 = r8616 * r8626;
        double r8635 = i;
        double r8636 = r8634 * r8635;
        double r8637 = r8633 - r8636;
        double r8638 = j;
        double r8639 = 27.0;
        double r8640 = r8638 * r8639;
        double r8641 = k;
        double r8642 = r8640 * r8641;
        double r8643 = r8637 - r8642;
        return r8643;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 
(FPCore (x y z t a b c i j k)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1"
  (- (- (+ (- (* (* (* (* x 18.0) y) z) t) (* (* a 4.0) t)) (* b c)) (* (* x 4.0) i)) (* (* j 27.0) k)))

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