Hi,
From the traceroute, it looks like traffic is hitting VR ISP1 [192.168.13.1] and then looping probably due to the default route.
Do you have a route for 10.13.0.1 on ISP1.inet.0 or ISP2.inet.0
show route table ISP1.inet.0 10.13.0.1
show route table ISP2.inet.0 10.13.0.1
Is the ge-0/0/0.0 interface under a VR or inet.0?
Cheers,
Ashvin