[Bonmin] isProvenDualInfeasible error message

[Pierre Bonami]

Dear Francois,
The error message should be fixed in the latest trunk.
It seems that Ipopt is unable to find a feasible solution at the root 
and then Bonmin will have a hard time to pass the root anyway.
Do you know a feasible solution to your problem? If yes you should put 
it as starting point.
Best rergards,
Pierre

Francois Dionne wrote:
> Dear mailing list,
>  
> I have followed your advice and placed code inside my C++ sources to 
> set the algorithm to B-BB for my non-convex problem.
>  
> Now I have a different problem: when I execute my binary, this is the 
> result:
>
> ******************************************************************************
> This program contains Ipopt, a library for large-scale nonlinear 
> optimization.
>  Ipopt is released as open source code under the Common Public License 
> (CPL).
>          For more information visit http://projects.coin-or.org/Ipopt
> ******************************************************************************
>  
> IpOp0008I 
>                    Num    Status         Obj                It         
> time
> IpOp0009I     1        INFEAS      -3                   990      1.14807
> IpOp0010I     r1       INFEAS      -0.0947173      195      0.212013
> IpOp0010I     r2       INFEAS      -0.0500028      203      0.224014
> IpOp0010I     r3       INFEAS      -0.05               371      0.420026
> IpOp0010I     r4       INFEAS      -0.0500004      263      0.284018
> IpOp0010I     r5       INFEAS      -0.0500002      223      0.244015
> IpOp0010I     r6       INFEAS      -0.0500375      271      0.30802
> IpOp0010I     r7       INFEAS      -3                   850      1.04407
> IpOp0010I     r8       INFEAS      -0.05              1478     1.81611
> IpOp0010I     r9       INFEAS      -3                   263      0.292018
> IpOp0010I     r10      INFEAS      -0.0500003     523      0.624039
> Cbc0006I The LP relaxation is infeasible or too expensive
> IpoptInterface::isProvenDualInfeasible
> Don't have this optimization status yet.
>  
> Did I do a mistake?  Does this mean my code accidently called an 
> unsupported function of Ipopt? What should I do?
>  
> Thank you for your previous help, and have a nice day.
>  
> ------------------------------------------------------------------------
>
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