[Ipopt] Restoration Failed with one constaint only

[Lewis I]

Dear all,

I have check my derivative with derivative checker, no problem found.
I have finally solved it by setting the tol to 1e-6, and set the mu_strategy to adaptive.What is happening?
thx

Regards,
Lewis
--- On Sat, 1/16/10, Lewis I <lewis369lewis at yahoo.com> wrote:

> From: Lewis I <lewis369lewis at yahoo.com>
> Subject: [Ipopt] Restoration Failed with one constaint only
> To: ipopt at list.coin-or.org
> Date: Saturday, January 16, 2010, 6:21 PM
> Dear all,
> 
> I have the following problems when I ran my problem,
> my problem only hv 24 variables, 1 obj. function  and
> 1 constraint.
> The constraint is the function of 18 variables from that 24
> variables.
> 
> 
> Log:
> ______________________________________________________________________
> 
> 458 2.3928240e+003 2.01e+003 3.40e+008 -11.0
> 3.29e+001    -  1.00e+000 1.00e+000w  1
>  459 5.9069378e+003 1.66e+003 8.61e+002 -11.0
> 2.13e+001    -  1.00e+000 1.00e+000w  1
> Restoration phase is called at point that is almost
> feasible,
>   with constraint violation 7.310133e-013. Abort.
> 
> Number of Iterations....: 459
> 
>                
>                
>    (scaled)         
>        (unscaled)
> Objective................: 
> 9.4569553206125093e+001   9.4569553206125093e+001
> Dual infeasibility......: 
> 9.1622460109465753e-001   9.1622460109465753e-001
> Constraint violation....: 
> 7.3101334986695766e-013   5.8207660913467407e-011
> Complementarity.........: 
> 0.0000000000000000e+000   0.0000000000000000e+000
> Overall NLP error........: 
> 2.2388529800870424e-005   9.1622460109465753e-001
> 
> 
> Number of objective function evaluations   
>          = 3081
> Number of objective gradient evaluations   
>          = 462
> Number of equality constraint evaluations   
>         = 3289
> Number of inequality constraint evaluations   
>       = 0
> Number of equality constraint Jacobian
> evaluations   = 461
> Number of inequality constraint Jacobian evaluations = 0
> Number of Lagrangian Hessian evaluations   
>          = 0
> Total CPU secs in IPOPT (w/o function
> evaluations)   =      4.375
> Total CPU secs in NLP function evaluations   
>        =      0.016
> 
> EXIT: Restoration Failed!
> _______________________________________________________________
> Regards,
> Lewis
> 
> 
>       
> 
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