Revert change in quotient rule

[magoorden]

A while ago a 'bug' was fixed in the Reveaal engine for the quotient operator rule 5 where
was changed into
. The actual bug was in the theory, so this change needs to be reverted.

The full rule 5 reads now as

[seblund]

It was actually never merged into the main branch, as it seemed like we were undecided on the intended behaviour at the time. The changes are in a draft pull request (PR #146), I will link to this issue in the pull request so we can make sure everything is correct before it is eventually merged.

[magoorden]

This afternoon we (Florian and I) were using the latest release of Ecdar and it did not produce the right guard. Therefore, I assumed that it was in a merge request that was already merged.

[magoorden]

This is the quotient you should eventually get when you do spec \\ administration for the university example from the paper (note that the university example from the paper has an additional edge in the administration than the default one supplied by the examples in the tool).