[sumo-user] Double Free or Corruption Error

[Toby Cannon <tobycannon50@xxxxxxxxx>]

Hi all,

I'm currently trying to run a big simulation with traci using a cropped version of the cologne scenario.

I'm outputting both the full output as well as the edge emissions data to XML files.

After around 4000 (roughly half way) timesteps I am getting the error:

double free or corruption (!prev)

Traceback (most recent call last):

  File "mainScript.py", line 108, in <module>

    main()

  File "mainScript.py", line 92, in main

    CHDurations, CHDistances = simulation("CH")

  File "mainScript.py", line 53, in simulation

    traci.simulationStep()

  File "/home/toby/sumo-1.1.0/tools/traci/__init__.py", line 127, in simulationStep

    responses = _connections[""].simulationStep(step)

  File "/home/toby/sumo-1.1.0/tools/traci/connection.py", line 323, in simulationStep

    result = self._sendExact()

  File "/home/toby/sumo-1.1.0/tools/traci/connection.py", line 99, in _sendExact

    raise FatalTraCIError("connection closed by SUMO")

traci.exceptions.FatalTraCIError: connection closed by SUMO

It's running on Ubuntu with 8GB memory.

The full output XML file is at 3.4GB when it crashed which I feel may be a cause.

Does anyone know what may be causing this error and how I can fix it?

Many thanks,

Toby