[Ipopt] PyOmo/Ipopt fails with “can't evaluate pow”

[Zhisheng Xu]

Hi,

I'm using pyomo/ipopt and got the following error message. Is there an
option setting to avoid this and get pow() evaluated to be 0?

iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du
alpha_pr  ls
   0 -1.7091136e+003 5.24e+002 1.00e+000  -6.0 0.00e+000    -  0.00e+000
0.00e+000   0
Error evaluating constraint 56: can't evaluate pow(-3.50288e-10,2.5)

-- 
Thanks,
-Zhisheng Xu
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