The output from Diffblue Cover CLI is displayed to the screen or to standard output/error. This will also include error messages where appropriate.
More detailed information from the tool can be found in the user log files in the directory in which Cover was run:
A new log file, with an appropriate TIMESTAMP, is created each time Cover is run.
Diffblue Cover CLI also creates a
support-TIMESTAMP.log log file, in the same directory, which is only relevant to the Diffblue support team. If you raise a support issue then you may be asked to provide this log file.