Sentinel 1 Preprocessing

Hi,
I am trying to preprocess the Sentinel 1 data using the graph attached; however, it took a whole day and still it doesn’t show any progress. Could anyone please help me with why this might be happening?
Thanks.

Rajeev

it probably got stuck in the Terrain Correction step because of this: SRTM ZIP-files are corrupted or not found
A solution is provided at the end of the topic.