As you are using ARIS Basic the number of available reports is limited. In case you have already tried the reports for models, Output model information and some others, you could do the following to get a simple list of processes.
Either go to Advanced Search via /search, enter * to seach for all content, then select Models on the dropwdown list on the left, and then simply copy that list of modes from your browser:
Or you can go via Models and Objects (/repository), click on Content, make sure the Models tab is activated, then enter * to search for all processes, and you get also a list of models which you can copy from your browser:
