\[\left(\left(333.75 \cdot {33096}^{6} + \left(77617 \cdot 77617\right) \cdot \left(\left(\left(\left(11 \cdot \left(77617 \cdot 77617\right)\right) \cdot \left(33096 \cdot 33096\right) + \left(-{33096}^{6}\right)\right) + -121 \cdot {33096}^{4}\right) + -2\right)\right) + 5.5 \cdot {33096}^{8}\right) + \frac{77617}{2 \cdot 33096}\]

\left(\left(333.75 \cdot {33096}^{6} + \left(77617 \cdot 77617\right) \cdot \left(\left(\left(\left(11 \cdot \left(77617 \cdot 77617\right)\right) \cdot \left(33096 \cdot 33096\right) + \left(-{33096}^{6}\right)\right) + -121 \cdot {33096}^{4}\right) + -2\right)\right) + 5.5 \cdot {33096}^{8}\right) + \frac{77617}{2 \cdot 33096}

double f() {
        double r8423 = 333.75;
        double r8424 = 33096.0;
        double r8425 = 6.0;
        double r8426 = pow(r8424, r8425);
        double r8427 = r8423 * r8426;
        double r8428 = 77617.0;
        double r8429 = r8428 * r8428;
        double r8430 = 11.0;
        double r8431 = r8430 * r8429;
        double r8432 = r8424 * r8424;
        double r8433 = r8431 * r8432;
        double r8434 = -r8426;
        double r8435 = r8433 + r8434;
        double r8436 = -121.0;
        double r8437 = 4.0;
        double r8438 = pow(r8424, r8437);
        double r8439 = r8436 * r8438;
        double r8440 = r8435 + r8439;
        double r8441 = -2.0;
        double r8442 = r8440 + r8441;
        double r8443 = r8429 * r8442;
        double r8444 = r8427 + r8443;
        double r8445 = 5.5;
        double r8446 = 8.0;
        double r8447 = pow(r8424, r8446);
        double r8448 = r8445 * r8447;
        double r8449 = r8444 + r8448;
        double r8450 = 2.0;
        double r8451 = r8450 * r8424;
        double r8452 = r8428 / r8451;
        double r8453 = r8449 + r8452;
        return r8453;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019179 
(FPCore ()
  :name "From Warwick Tucker's Validated Numerics"
  (+ (+ (+ (* 333.75 (pow 33096.0 6.0)) (* (* 77617.0 77617.0) (+ (+ (+ (* (* 11.0 (* 77617.0 77617.0)) (* 33096.0 33096.0)) (- (pow 33096.0 6.0))) (* -121.0 (pow 33096.0 4.0))) -2.0))) (* 5.5 (pow 33096.0 8.0))) (/ 77617.0 (* 2.0 33096.0))))

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