do not crash in tree monitor is var is unknown, i.e. if the variable is an interval var
do not crash in tree monitor is var is unknown, i.e. if the variable is an interval var
bask/or-tools,falcong/or-tools,abdelkimo/or-tools,atpohjal/or-tools,waelrash1/or-tools,abdelkimo/or-tools,christchron/or-tools,Aminakh/or-tools,falcong/or-tools,christchron/or-tools,falcong/or-tools,bask/or-tools,waelrash1/or-tools,atpohjal/or-tools,atpohjal/or-tools,Aminakh/or-tools,abdelkimo/or-tools,falcong/or-tools,waelrash1/or-tools,Aminakh/or-tools,falcong/or-tools,bask/or-tools,bask/or-tools,christchron/or-tools,christchron/or-tools,falcong/or-tools,christchron/or-tools,waelrash1/or-tools,bask/or-tools,atpohjal/or-tools,atpohjal/or-tools,waelrash1/or-tools,bask/or-tools,tonybenny2004/or-tools,tonybenny2004/or-tools,Aminakh/or-tools,waelrash1/or-tools,abdelkimo/or-tools,abdelkimo/or-tools,tonybenny2004/or-tools,Aminakh/or-tools,tonybenny2004/or-tools,tonybenny2004/or-tools,Aminakh/or-tools,atpohjal/or-tools,christchron/or-tools,tonybenny2004/or-tools,abdelkimo/or-tools