Hi,

I'm using OpenModelica version 1.12.0 for 64bits and I have developed an hydraulic library. In order to simulate the model of a press circuit, I select symsolver in it's backward configuration. Most of the simulation was done properly, but when the model reaches some points (near cero flow rate in the pipelines) the simulation slows and appear repeateadly the message: "Warning: maximal number of iteration reached but no root found". After this stage, the simulation stop and exit with code -1.

I done some research and I think the problem comes from not having a fixed cost simulation on the non-linear equations. Is there a way to limit the nonlinear iterations or use fixed-cost runtime on the simulation?

Thanks,
Jorge