It is ViaCAD.
I will try it but the programm is limited to 3000 facets. Its "big brother" is named SHARK and has more performance.
The limitation of the CAD program concerns the changing from mesh to solids. The repair function was running through.
The fixed files has now >8 MB therefore I attache the factory-file (800 Kb) what is based on yours without any changings exept the "new" tree.
It has found only the collapsed facets, all others where ok.
But I believe it doesn't help! The masse of annoying edgdes are part of the construction and not part of issues. For details have a look to the pics.