Use the --timeout flag to change the timeout.
herbie shell --seed 2019088
(FPCore (x y z t a b c i)
:name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2"
(/ (+ (* (+ (* (+ (* (+ (* x y) z) y) 27464.7644705) y) 230661.510616) y) t) (+ (* (+ (* (+ (* (+ y a) y) b) y) c) y) i)))