Using Sitemap Generator on a Stand Alone Server running 7.2 php

[randerson801]

I am running the latest version of Sitemap Generator  on a 8 core AMD processor with 16 gig ram.  I am trying to build a sitemap of a wordpress recipe site that has over 13,000 recipes as posts,  with 233 pages of links to the posts.  The one sitemap I was able to build took me 3 days with a total of 12 hours of run time.  In other words every couple of hours I had to restart the creation of the sitemap.  I do have the continue building prior checked,  also continue when page is shut down.  Since I am running on my stand alone server,  I am running with Microsoft Edge,  and never closing the window.
Why does the generator shut itself down every couple of hours?

[XML-Sitemaps Support]

Hello,

it looks like your server configuration doesn't allow to run the script long enough to create full sitemap. Please try to increase memory_limit and max_execution_time settings in php configuration at your host (php.ini file) or contact hosting support regarding this.

In this case I would recommend to run generator in command line if you have ssh access to your server.