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

\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 r8300 = x;
        double r8301 = 18.0;
        double r8302 = r8300 * r8301;
        double r8303 = y;
        double r8304 = r8302 * r8303;
        double r8305 = z;
        double r8306 = r8304 * r8305;
        double r8307 = t;
        double r8308 = r8306 * r8307;
        double r8309 = a;
        double r8310 = 4.0;
        double r8311 = r8309 * r8310;
        double r8312 = r8311 * r8307;
        double r8313 = r8308 - r8312;
        double r8314 = b;
        double r8315 = c;
        double r8316 = r8314 * r8315;
        double r8317 = r8313 + r8316;
        double r8318 = r8300 * r8310;
        double r8319 = i;
        double r8320 = r8318 * r8319;
        double r8321 = r8317 - r8320;
        double r8322 = j;
        double r8323 = 27.0;
        double r8324 = r8322 * r8323;
        double r8325 = k;
        double r8326 = r8324 * r8325;
        double r8327 = r8321 - r8326;
        return r8327;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 +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	220	0
run-improve47	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	342	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