Use the --timeout flag to change the timeout.
\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 r167744 = x;
double r167745 = y;
double r167746 = r167744 * r167745;
double r167747 = z;
double r167748 = t;
double r167749 = r167747 * r167748;
double r167750 = r167746 + r167749;
double r167751 = a;
double r167752 = b;
double r167753 = r167751 * r167752;
double r167754 = r167750 + r167753;
double r167755 = c;
double r167756 = i;
double r167757 = r167755 * r167756;
double r167758 = r167754 + r167757;
return r167758;
}
herbie shell --seed 2020042 +o rules:numerics
(FPCore (x y z t a b c i)
:name "Linear.V4:$cdot from linear-1.19.1.3, C"
:precision binary64
(+ (+ (+ (* x y) (* z t)) (* a b)) (* c i)))