How do I force my MacBook Air into "hibernation" mode?

I have a MacBookAir3,2 (late 2010) running 10.9.3. I want to be able to force the machine to immediately go into "hibernation" mode, but it seems impossible. The usual answer that I have seen is sudo pmset -a destroyfvkeyonstandby 1 hibernatemode 25 but when I sleep/wake my Mac with those settings, I am _not_ asked for my FileVault password. Additional Info: * Power Nap is disabled for Battery and A/C power * Fast User Switching is disabled * Preferences » Security & Privacy » General » Require Password is set to “immediately” I have run sudo pmset -a destroyfvkeyonstandby 1 hibernatemode 25 autopoweroff 1 autopoweroffdelay 14400 standby 1 but note that 'autopoweroff' and 'autopoweroffdelay' are both absent from my pmset settings: System-wide power settings: DestroyFVKeyOnStandby 1 Active Profiles: Battery Power -1 AC Power -1* Currently in use: standbydelay 0 standby 1 womp 1 halfdim 1 hibernatefile /var/vm/sleepimage darkwakes 0 networkoversleep 0 disksleep 10 sleep 180 hibernatemode 25 ttyskeepawake 1 displaysleep 10 acwake 0 lidwake 1 Putting the computer to sleep, either by closing the lid or sudo shutdown -s now and then waking it back up within a minutes or two does not require me to enter my FileVault password, just my regular account password. Is there a way for me to _force_ the Mac to hibernate?