High Memory Uses in run!

Hello All,

I have set this simple case of single particle falling under gravity, from the base case of twoSpheresGlowinskiMPI, using external mesh files (.msh for CFD and .stl for DEM).
The run is initializing fine but after getting mess "Import and parallelization of mesh cad containing 3132 triangle(s) successful"
the system freezes. In further investigation it is found that the process is consuming all available memory along with complete
swap memory.
All this is happening without giving any error message!
Can anybody please help me to resolve this issue

Thanks in advance!

Atul M. Bhagat

PS: 1. screenshot of issue is attached 2. case folder is also attached