id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2878	compiled model crashes for some integration times	alexander_rusako@…	Willi Braun	"Hi, 

 I am a bit new to open modelica. I built my model and see that it may or may not crash for some integration time.

Model with stop time 80 and 200 it works fine. But integration time 100 leads to crash. I managed to reproduce the problem with old open modelica versions as well. 


Below is part of the log. I am also attaching models and runExp.mos script which runs the model.

simulate(OneMuscleWithGland, startTime = 0.0, stopTime=100)

record SimulationResult
    resultFile = """",
    simulationOptions = ""startTime = 0.0, stopTime = 100.0, numberOfIntervals = 5000, tolerance = 1e-06, method = 'dassl', fileNamePrefix = 'OneMuscleWithGland', options = '', outputFormat = 'mat', variableFilter = '.*', cflags = '', simflags = ''"",
    messages = ""Simulation execution failed for model: OneMuscleWithGland
assert            | debug   | division by zero at time 55.45137084070143, (a=1.000010000000006e-05) / (b=0), where divisor b expression is: if m.MF <= 0.0 then 0.0 else 1.0
stdout            | warning | Integrator attempt to handle a problem with a called assert.
assert            | debug   | division by zero at time 55.44, (a=9.999606888309255e-06) / (b=0), where divisor b expression is: if m.MF <= 0.0 then 0.0 else 1.0
stdout            | info    | model terminate | Simulation terminated by an assert at time: 55.44

Limited backtrace at point of segmentation fault
/lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x7fd1e3927cb0]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x1c)[0x7fd1e35dc24c]
/usr/lib/omc/libSimulationRuntimeC.so(deInitializeDataStruc+0x1d)[0x7fd1e3e86cbd]
/usr/lib/omc/libSimulationRuntimeC.so(_main_SimulationRuntime+0x154)[0x7fd1e3ebf3d4]
/tmp/OpenModelica/OneMuscleWithGland(main+0x15e)[0x405e1e]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7fd1e357a76d]
/tmp/OpenModelica/OneMuscleWithGland[0x4033a9]
Segmentation fault (core dumped)
"",
    timeFrontend = 0.017031358,
    timeBackend = 0.016784455,
    timeSimCode = 0.015486948,
    timeTemplates = 0.011841404,
    timeCompile = 0.74921455
end SimulationResult;
Warning: The initial conditions are not fully specified. Use +d=initialization for more information.
"	defect	closed	critical	1.9.2	Run-time	1.9.0Beta	fixed		Lennart Ochel