Originally Posted by Rick Eloy

Yogesh,
I took a quick look at your settings. First, you're set to a fly-thru animation and you have moving lights. Remember what Chris said: if you have anything other than a camera moving (even an animated shader) you'll have to go brute force. Period. That means you'll need an awfully long time to render everything, and using HD definition you're on to a long, long, loooooooong wait.
Piece of advice: avoid moving things as much as you can. Even the simplest animation will take ages to render with moving stuff, so try to avoid it. But, as your job requires it, I'd say you'll need to change your settings to single frame (as already spotted) and try to use a renderfarm. Believe me, you'll need it.

Originally Posted by Christopher Nichols

Three things...

When doing a HD animation, you should always plan on at least an hour a frame for renders. So always plan ahead. That is critical.

Next... you can NOT animate the lights (as everyone else is telling you), at which point you can bake the IR and LC maps

Or you can suck it up and use the Universal settings, as I suggested, with the slightly lower settings of min 1 max or 25 and clr thresh of 0.002

Other than that... you have no other choices.