[Couenne] ANALYSIS TEST: ERROR: unknown operator (address 0pa24700)

[Stefan Vigerske]

Hi,

while Bonmin just uses function, gradient, and hessian values of your 
functions as provided by AMPL, Couenne has to analyse the analytical 
expression of your functions in order to be able to construct a convex 
relaxation of your problems.
If you use operators in your functions that are not supported by Couenne 
(yet), then you get this kind of error.

If you post your model, it may be possible to point out which function 
is making trouble.

Stefan

On 06/19/2012 07:51 AM, Novalio Daratha wrote:
> Dear All,
>
> Sorry, the same email was sent without subject.  I have an AMPL model that
> can be solved using bonmin. However, when I tried to used couenne, there is
> an error.
>
> ampl: solve;
> Couenne 0.4.2 --  an Open-Source solver for Mixed Integer Nonlinear
> Optimization
>
> Mailing list: couenne at list.coin-or.org
> Instructions: http://www.coin-or.org/Couenne
> couenne:
> ANALYSIS TEST: ERROR: unknown operator (address 0pa24700), aborting.
> exit code 4294967295
> <BREAK>
> ampl:
>
> I had google it and get no meaningful results. Would anybody help me to
> understand this better?
>
>
> Thanking You,
>
> Novalio Daratha
>
>
>
>
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