Why does a Stateflow freeze?

Why does a Stateflow freeze--turns to gray and generates no outputs despite input signal availability? I tried events, clock, signalbuilder,solver config to wake it up but no change. I am using the stateflow along other simulink models that work good.

Answer 1

[Siddharth]

Hi Filmon,

this seems like something that technical support at the MathWorks can help you with. Contact them at [e-mail]

-Sid

[Andreas Goser]

To be precise: The model / the program was actually not frozen but running with very small time steps. And the recommendation was to use the solver ode23tb, which is more suitable for stiff systems.

Answer 2

[Andreas Goser]

While Siddharth is correct, contacting support should be considered, a couple of questions come to mind:

1. All models or just your model freezes? What about a demos like "sf_car"?
2. Any potential system requirement issues (like Release 13 on Windows 8...)?
3. In general, what is your MATLAB release, OS, architecture (32 or 64 bit) and C Compiler?