[slam_karto-1] process has died [pid 15130,exit code -11, cmd

[ INFO] [1495075422.804255281, 1494847537.362521814]: laser laser's pose wrt base: 0.150 0.000 0.000
Registering sensor: [laser]
[ INFO] [1495075900.451681132, 1494848015.006153533]: Calling doSPA for loop closure
[slam_karto-1] process has died [pid 15130, exit code -11, cmd /home/ubuntu/catkin_ws/devel/lib/slam_karto/slam_karto scan:=scan __name:=slam_karto __log:=/home/ubuntu/.ros/log/75dfcdca-3b66-11e7-9eb8-6c71d964baf6/slam_karto-2.log].
log file: /home/ubuntu/.ros/log/75dfcdca-3b66-11e7-9eb8-6c71d964baf6/slam_karto-2*.log