Static load analysis file size problem

I have a problem when running a static load analysis in Solidworks Premium 2012 sp5.  I start out with a 3,000 KB file.  Every time I run the static analysis the file size more than double as well as the time it takes to start the next analysis.   After the 4th run the file size is over 105,000 KB and It takes over 8 hours for the analysis to start.  Once the analysis starts it takes maybe 15 minutes at most to finish. Any Idea why the file size is exponentially growing?

SolidworksSimulation