I have never seen same side single station being used at theme parks, but I have seen it many times at temporary fairgrounds. The station size it at a premium because they move the entire ride by truck every month, so they need to design it the station for minimum hardware use.
I do not know if Space Mountain (US version) uses same side stations because I do not remember the layout of the footpaths inside the building (I went there 25 years ago). The Paris version is completely different (parallel dual through station, like Big Thunder Mountain).
However I do know for sure that Rock & Roller Coaster uses 2 stations with entrance and exit on the same side.
According to Wikipedia, the ride duration is approx 1:20, I have seen other sources saying 1:10 (not including the station loading and unloading of course), has 4 trains (technically 5 trains but in day to day usage it only uses 4 simultaneously on the track).
Most of the time, the ride has :
-1 train in the entrance station loading people
-1 train in the initial section (countdown, launch and the first loop)
-1 train somewhere on the "road"/"stage" aka the main big dark building with the light show (3 blocks)
-1 train in the exit station unloading people
In order to make sure the train won't stop in the track building, loading and unloading operations should each take significantly less than a minute (loading is the longest part because of the harness safety check)
However, I have sometimes experienced the ride where there were hiccups and the vehicle was maintained for slightly longer than usual in the initial section (before launch) or in the final brake run at the end of the 2nd block in the building.
------- I've got an idea to know the exact tining ------
There are plenty of videos on youtube of the launch section filmed by people waiting in the queue, we should be able to get the actual timing from them.
EDIT : Most of the videos I found filmed in the queue are cut between launches. But I have found a video during a ride re-launch after a malfunction with an uninterrupted showing 3 consecutive launches (with light on and no music during a ride restart)
https://youtu.be/N7w6tX4rLAU?t=2m53s
Time between launch 1 & 2 : 1 minute 3 seconds
Time between launch 2 & 3 : 1 minute 6 seconds
Nobody is embarking because this is a ride restart but since the timing is constant, it gives the ideal timing if the ride operates at optimum capacity, it is a significant improvement over your 2 minute example