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

\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 r8144 = x;
        double r8145 = 18.0;
        double r8146 = r8144 * r8145;
        double r8147 = y;
        double r8148 = r8146 * r8147;
        double r8149 = z;
        double r8150 = r8148 * r8149;
        double r8151 = t;
        double r8152 = r8150 * r8151;
        double r8153 = a;
        double r8154 = 4.0;
        double r8155 = r8153 * r8154;
        double r8156 = r8155 * r8151;
        double r8157 = r8152 - r8156;
        double r8158 = b;
        double r8159 = c;
        double r8160 = r8158 * r8159;
        double r8161 = r8157 + r8160;
        double r8162 = r8144 * r8154;
        double r8163 = i;
        double r8164 = r8162 * r8163;
        double r8165 = r8161 - r8164;
        double r8166 = j;
        double r8167 = 27.0;
        double r8168 = r8166 * r8167;
        double r8169 = k;
        double r8170 = r8168 * r8169;
        double r8171 = r8165 - r8170;
        return r8171;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019179 +o rules:numerics
(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

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0		L	C
loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt	25	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	217	0
run-improve43	/data/pavpan/nightlies/herbie/various-cleanup/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