[Coin-ipopt] Segmentation Fault (Quasi Newton option)

[Andreas Waechter]

Hi Sonia,

Thanks for letting us know.  It would be very helpful if you could submit 
a ticket at the Ipopt homepage 
(http://projects.coin-or.org/Ipopt/newticket), and include the model or 
the code where this happens, together with information on which platform 
and which compiler this happens, and if you ran configure with specific 
options, as well as the Ipopt options you chose.  (If you enter your email 
address in the "Your email or username" box, you will be notified of any 
changes in the ticket.)

This way, we are hopefully able to reproduc the issue, and are able to fix 
it.

Please let us know if you have trouble submitting the ticket.

Thanks,

Andreas

On Wed, 24 May 2006, Sonia Singhal wrote:

> Hi,
>
> I am working with the 3.1.0 version of IPOpt and am using the Quasi
> Newton option to approximate the Hessian.
> After several (100) iterations IPOpt gives a segmentation fault. The
> call stack is -
>
> =======================================================
> Program received signal SIGSEGV, Segmentation fault.
> 0x0815df07 in Ipopt::SmartPtr<Ipopt::LowRankUpdateSymMatrixSpace
> const>::operator-> ()
> (gdb) where
> #0  0x0815df07 in Ipopt::SmartPtr<Ipopt::LowRankUpdateSymMatrixSpace
> const>::operator-> ()
> #1  0x0815f72a in Ipopt::LowRankAugSystemSolver::Solve ()
> #2  0x081064bf in Ipopt::AugRestoSystemSolver::Solve ()
> #3  0x08152e40 in Ipopt::LeastSquareMultipliers::CalculateMultipliers ()
> #4  0x081494d0 in Ipopt::IpoptAlgorithm::AcceptTrialPoint ()
> #5  0x081455cb in Ipopt::IpoptAlgorithm::Optimize ()
> #6  0x081a6964 in Ipopt::MinC_1NrmRestorationPhase::PerformRestoration ()
> #7  0x0810f8a5 in Ipopt::BacktrackingLineSearch::FindAcceptableTrialPoint ()
> #8  0x08147515 in Ipopt::IpoptAlgorithm::ComputeAcceptableTrialPoint ()
> #9  0x08145533 in Ipopt::IpoptAlgorithm::Optimize ()
> #10 0x080890bf in Ipopt::IpoptApplication::call_optimize ()
> #11 0x08087d84 in Ipopt::IpoptApplication::OptimizeNLP ()
> #12 0x08087434 in Ipopt::IpoptApplication::OptimizeTNLP ()
> =========================================================
>
> Someone else faced the same problem about a month back. Was wondering
> if someone knows the reason or has a solution for this problem.
>
> Thanks,
> ~ Sonia
>
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