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

\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 r65133 = x;
        double r65134 = 18.0;
        double r65135 = r65133 * r65134;
        double r65136 = y;
        double r65137 = r65135 * r65136;
        double r65138 = z;
        double r65139 = r65137 * r65138;
        double r65140 = t;
        double r65141 = r65139 * r65140;
        double r65142 = a;
        double r65143 = 4.0;
        double r65144 = r65142 * r65143;
        double r65145 = r65144 * r65140;
        double r65146 = r65141 - r65145;
        double r65147 = b;
        double r65148 = c;
        double r65149 = r65147 * r65148;
        double r65150 = r65146 + r65149;
        double r65151 = r65133 * r65143;
        double r65152 = i;
        double r65153 = r65151 * r65152;
        double r65154 = r65150 - r65153;
        double r65155 = j;
        double r65156 = 27.0;
        double r65157 = r65155 * r65156;
        double r65158 = k;
        double r65159 = r65157 * r65158;
        double r65160 = r65154 - r65159;
        return r65160;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 +o rules:numerics
(FPCore (x y z t a b c i j k)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1"
  :precision binary64
  (- (- (+ (- (* (* (* (* x 18) y) z) t) (* (* a 4) t)) (* b c)) (* (* x 4) i)) (* (* j 27) k)))

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