/usr/share/aide/config/aide/aide.conf.d/31_aide_cron-apt is in aide-common 0.16~a2.git20130520-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | /var/lib/cron-apt/_-_etc_-_cron-apt_-_config/mailchanges/(0-update-|3-download-)[0-9a-f]{32}$ VarFile
!/var/lib/cron-apt/lockfile$
/var/lib/cron-apt$ VarDir
!/tmp/cron-apt\.[a-zA-Z0-9]{6}$
!/tmp/cron-apt\.[a-zA-Z0-9]{6}/initlog$
/var/log/cron-apt/log$ Log
/var/log/cron-apt/log\.1\.gz$ LoSerMemberLog
/var/log/cron-apt/log\.[23]\.gz$ SerMemberLog
/var/log/cron-apt/log\.4\.gz$ HiSerMemberLog
/var/log/cron-apt$ VarDir
|