/usr/lib/eclipse/plugins/org.sat4j.core_2.3.3.WHEEZY.jar is in eclipse-platform 3.8.1-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/eclipse/plugins/../../../share/java/org.sat4j.core.jar
/usr/lib/eclipse/plugins/../../../share/java/org.sat4j.core.jar