I post the apt policy for better comprehension
Package files:
100 /var/lib/dpkg/status
release a=now
900
http://deb.whonix.org stretch/main i386 Packages
release o=whonix,n=stretch,l=Whonix,c=main,b=i386
origin deb.whonix.org
900
http://deb.whonix.org stretch/main amd64 Packages
release o=whonix,n=stretch,l=Whonix,c=main,b=amd64
origin deb.whonix.org
500
http://ppa.launchpad.net/webupd8team/java/ubuntu cosmic/main i386 Packages
release v=18.10,o=LP-PPA-webupd8team-java,a=cosmic,n=cosmic,l=Oracle Java (JDK) 8 / 9 Installer PPA,c=main,b=i386
origin ppa.launchpad.net
500
http://ppa.launchpad.net/webupd8team/java/ubuntu cosmic/main amd64 Packages
release v=18.10,o=LP-PPA-webupd8team-java,a=cosmic,n=cosmic,l=Oracle Java (JDK) 8 / 9 Installer PPA,c=main,b=amd64
origin ppa.launchpad.net
500
http://ppa.launchpad.net/teejee2008/ppa/ubuntu cosmic/main i386 Packages
release v=18.10,o=LP-PPA-teejee2008,a=cosmic,n=cosmic,l=Development,c=main,b=i386
origin ppa.launchpad.net
500
http://ppa.launchpad.net/teejee2008/ppa/ubuntu cosmic/main amd64 Packages
release v=18.10,o=LP-PPA-teejee2008,a=cosmic,n=cosmic,l=Development,c=main,b=amd64
origin ppa.launchpad.net
900
https://packages.sury.org/php stretch/main i386 Packages
release n=stretch,c=main,b=i386
origin packages.sury.org
900
https://packages.sury.org/php stretch/main amd64 Packages
release n=stretch,c=main,b=amd64
origin packages.sury.org
900
http://repo.mysql.com/apt/debian stretch/mysql-tools i386 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-tools,b=i386
origin repo.mysql.com
900
http://repo.mysql.com/apt/debian stretch/mysql-tools amd64 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-tools,b=amd64
origin repo.mysql.com
900
http://repo.mysql.com/apt/debian stretch/mysql-5.7 i386 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-5.7,b=i386
origin repo.mysql.com
900
http://repo.mysql.com/apt/debian stretch/mysql-5.7 amd64 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-5.7,b=amd64
origin repo.mysql.com
900
http://repo.mysql.com/apt/debian stretch/mysql-apt-config i386 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-apt-config,b=i386
origin repo.mysql.com
900
http://repo.mysql.com/apt/debian stretch/mysql-apt-config amd64 Packages
release o=MySQL,n=stretch,l=MySQL,c=mysql-apt-config,b=amd64
origin repo.mysql.com
500
http://ppa.launchpad.net/webupd8team/java/ubuntu trusty/main i386 Packages
release v=14.04,o=LP-PPA-webupd8team-java,a=trusty,n=trusty,l=Oracle Java (JDK) 8 / 9 Installer PPA,c=main,b=i386
origin ppa.launchpad.net
500
http://ppa.launchpad.net/webupd8team/java/ubuntu trusty/main amd64 Packages
release v=14.04,o=LP-PPA-webupd8team-java,a=trusty,n=trusty,l=Oracle Java (JDK) 8 / 9 Installer PPA,c=main,b=amd64
origin ppa.launchpad.net
100
http://security.debian.org jessie/updates/non-free i386 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=non-free,b=i386
origin security.debian.org
100
http://security.debian.org jessie/updates/non-free amd64 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=non-free,b=amd64
origin security.debian.org
100
http://security.debian.org jessie/updates/contrib i386 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=contrib,b=i386
origin security.debian.org
100
http://security.debian.org jessie/updates/contrib amd64 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=contrib,b=amd64
origin security.debian.org
100
http://security.debian.org jessie/updates/main i386 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=main,b=i386
origin security.debian.org
100
http://security.debian.org jessie/updates/main amd64 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=main,b=amd64
origin security.debian.org
100
http://ftp.debian.org/debian jessie/non-free i386 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=non-free,b=i386
origin ftp.debian.org
100
http://ftp.debian.org/debian jessie/non-free amd64 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=non-free,b=amd64
origin ftp.debian.org
100
http://ftp.debian.org/debian jessie/contrib i386 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=contrib,b=i386
origin ftp.debian.org
100
http://ftp.debian.org/debian jessie/contrib amd64 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=contrib,b=amd64
origin ftp.debian.org
100
http://ftp.debian.org/debian jessie/main i386 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=main,b=i386
origin ftp.debian.org
100
http://ftp.debian.org/debian jessie/main amd64 Packages
release v=8.11,o=Debian,a=oldstable,n=jessie,l=Debian,c=main,b=amd64
origin ftp.debian.org
500
http://ftp.us.debian.org/debian stretch-updates/main i386 Packages
release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=i386
origin ftp.us.debian.org
500
http://ftp.us.debian.org/debian stretch-updates/main amd64 Packages
release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=amd64
origin ftp.us.debian.org
900
http://security.debian.org/debian-security stretch/updates/contrib i386 Packages
release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=contrib,b=i386
origin security.debian.org
900
http://security.debian.org/debian-security stretch/updates/contrib amd64 Packages
release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=contrib,b=amd64
origin security.debian.org
900
http://security.debian.org/debian-security stretch/updates/main i386 Packages
release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=main,b=i386
origin security.debian.org
900
http://security.debian.org/debian-security stretch/updates/main amd64 Packages
release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=main,b=amd64
origin security.debian.org
900
http://ftp.debian.org/debian stable/non-free i386 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=non-free,b=i386
origin ftp.debian.org
900
http://ftp.debian.org/debian stable/non-free amd64 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=non-free,b=amd64
origin ftp.debian.org
900
http://ftp.debian.org/debian stable/contrib i386 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=contrib,b=i386
origin ftp.debian.org
900
http://ftp.debian.org/debian stable/contrib amd64 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=contrib,b=amd64
origin ftp.debian.org
900
http://ftp.debian.org/debian stable/main i386 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=i386
origin ftp.debian.org
900
http://ftp.debian.org/debian stable/main amd64 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=amd64
origin ftp.debian.org
900
http://ftp.us.debian.org/debian stretch/main i386 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=i386
origin ftp.us.debian.org
900
http://ftp.us.debian.org/debian stretch/main amd64 Packages
release v=9.5,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=amd64
origin ftp.us.debian.org
Pinned packages: