\[\left(x \cdot y + z \cdot t\right) + a \cdot b\]

\left(x \cdot y + z \cdot t\right) + a \cdot b

double f(double x, double y, double z, double t, double a, double b) {
        double r8482 = x;
        double r8483 = y;
        double r8484 = r8482 * r8483;
        double r8485 = z;
        double r8486 = t;
        double r8487 = r8485 * r8486;
        double r8488 = r8484 + r8487;
        double r8489 = a;
        double r8490 = b;
        double r8491 = r8489 * r8490;
        double r8492 = r8488 + r8491;
        return r8492;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 
(FPCore (x y z t a b)
  :name "Linear.V3:$cdot from linear-1.19.1.3, B"
  (+ (+ (* x y) (* z t)) (* a b)))

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