Use the --timeout flag to change the timeout.
herbie shell --seed 2019088
(FPCore (x)
:name "invcot (example 3.9)"
:pre (and (< -0.026 x) (< x 0.026))
:herbie-target
(if (< (fabs x) 0.026) (* (/ x 3) (+ 1 (/ (* x x) 15))) (- (/ 1 x) (/ 1 (tan x))))
(- (/ 1 x) (/ 1 (tan x))))