Your run was cancelled because the “Maximum execution time” that was specified in Simulation Control was exceeded.
The “Maximum execution time” (which is Not the simulation end time) is the maximum real clock time for the run. It is used mainly as a safety feature to limit usage and save core hours.
In the case of this tutorial it was set to 18000 sec (i.e 300 minutes) , after which the run automatically cancels.
To run it longer just increase this value to about 42,000 sec and and rerun for End Time of 5,000 or 6,000 ( I think 5000 should be enough to get good results and full convergence). See below for details
Thanks for pointing this out, as it might help others also.