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roslaunch: [gazebo-2] process has died [pid 7605, exit code 139 [closed]

After running my model with roslaunch for round about 10 to 20 minutes I always get the following error:

Segmentation fault (core dumped)  
[gazebo-2] process has died [pid 7605, exit code 139, cmd /opt/ros/kinetic/lib/gazebo_ros/gzserver -e ode /home/philipp/navibot_ws/src/navibot_gazebo/worlds/navibot.world __name:=gazebo __log:=/home/philipp/.ros/log/09e16ec0-4a76-11e7-a9fe-7085c23141c2/gazebo-2.log].  
log file: /home/philipp/.ros/log/09e16ec0-4a76-11e7-a9fe-7085c23141c2/gazebo-2*.log

Unfortunately no log file gazebo-2*.log is created.

I looked through my URDF model and checked my code. The problem is that I have a hard time to identify where the problem is really coming from, so I am looking for help here. I looked at the related questions here in the forum, but none of the solutions there worked for me.

This is my backtrace:

Thread 25 "gzserver" received signal SIGSEGV, Segmentation fault.                   
[Switching to Thread 0x7fff67fff700 (LWP 28488)]
gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/g
740     /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc: No such file  
(gdb) backtrace  
0  gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSA  
1  0x00007ffff62d99af in gazebo::physics::World::Step (this=this@entry=0x12075a0) a  
2  0x00007ffff62d9e25 in gazebo::physics::World::RunLoop (this=0x12075a0) at /build  
3  0x00007ffff40d95d5 in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.  
4  0x00007ffff65ee6ba in start_thread (arg=0x7fff67fff700) at pthread_create.c:333  
5  0x00007ffff6bef82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109  
 (gdb) frame 0  
0  gazebo::physics::World::Update (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo  /physics/World.cc:740  
740     in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc  
(gdb) frame 1  
1  0x00007ffff62d99af in gazebo::physics::World::Step (this=this@entry=0x12075a0) at /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc:672  
672     in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc  
(gdb) frame 2  
2  0x00007ffff62d9e25 in gazebo::physics::World::RunLoop (this=0x12075a0) at /build/gazebo-nhSAPd/gazebo-  7.0.0+dfsg/gazebo/physics/World.cc:481  
481     in /build/gazebo-nhSAPd/gazebo-7.0.0+dfsg/gazebo/physics/World.cc  
(gdb) frame 3  
3  0x00007ffff40d95d5 in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.58.0  
(gdb) frame 4   
4  0x00007ffff65ee6ba in start_thread (arg=0x7fff67fff700) at pthread_create.c:333  
333     pthread_create.c: No such file or directory.  
(gdb) frame 5   
5  0x00007ffff6bef82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109  
109     ../sysdeps/unix/sysv/linux/x86_64/clone.S: No such file or directory.