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

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

double f(double x, double y, double z, double t, double a, double b, double c, double i) {
        double r8392 = x;
        double r8393 = y;
        double r8394 = r8392 * r8393;
        double r8395 = z;
        double r8396 = t;
        double r8397 = r8395 * r8396;
        double r8398 = r8394 + r8397;
        double r8399 = a;
        double r8400 = b;
        double r8401 = r8399 * r8400;
        double r8402 = r8398 + r8401;
        double r8403 = c;
        double r8404 = i;
        double r8405 = r8403 * r8404;
        double r8406 = r8402 + r8405;
        return r8406;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019191 
(FPCore (x y z t a b c i)
  :name "Linear.V4:$cdot from linear-1.19.1.3, C"
  (+ (+ (+ (* x y) (* z t)) (* a b)) (* c i)))

Backtrace

get-representation: Unknown representation #f		L	C
loop	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	122	4
prepare-points	/data/pavpan/nightlies/herbie/interface2/src/points.rkt	146	0
setup-prog!34	/data/pavpan/nightlies/herbie/interface2/src/mainloop.rkt	67	0
run-improve43	/data/pavpan/nightlies/herbie/interface2/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