Why am i getting Out of Memory Error in ifogSim, when increasing the total simulation duration beyond 5 minutes?

Question

I am getting java.lang.OutOfMemoryError error in iFogSim, when I increase the total simulation duration to 5 minutes and beyond. I am running the VRGameFog.java code

I have not made any changes to the default code yet. I have read to reduce the usage of static variables in the code.