[Ipopt-tickets] [Ipopt] #69: Incorrectly reporting solution found

[Ipopt]

#69: Incorrectly reporting solution found
------------------------------+---------------------------------------------
Reporter:  andreasw           |       Owner:  ipopt-team
    Type:  defect             |      Status:  new       
Priority:  normal             |   Component:  Ipopt     
 Version:  3.3 (C++ Version)  |    Severity:  normal    
Keywords:                     |  
------------------------------+---------------------------------------------
 For modified hs061 problem, Ipopt reports incorrectly that solution is
 found:

 {{{
 iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du
 alpha_pr  ls
    0  0.0000000e+00 5.60e+01 3.30e+01  -1.0 0.00e+00    -  0.00e+00
 0.00e+00   0 s
    1 -1.3925196e+02 1.28e+03 1.42e+11  -1.0 6.00e+00    -  1.00e+00
 1.00e+00f  1
    2 -1.3543564e+02 3.96e+02 2.29e+10  -1.0 2.58e+00  10.0 1.00e+00
 1.00e+00h  1 Nh LLDj L
    3  1.2152284e+02 2.88e+02 1.11e+10  -1.0 1.08e+01    -  1.00e+00
 1.00e+00h  1 l
    4  9.0506095e+01 8.04e+01 2.85e+10  -1.0 2.15e+00   9.5 1.00e+00
 1.00e+00f  1 l
    5  2.0256604e+02 1.93e+01 4.38e+10  -1.0 1.58e+00    -  1.00e+00
 1.00e+00h  1 l
    6  2.7248152e+02 3.11e+00 5.78e+10  -1.0 8.62e-01    -  1.00e+00
 1.00e+00h  1 l
    7  3.3318898e+02 7.36e-01 1.49e+11  -1.0 1.10e+01    -  1.00e+00 6.25e-
 02h  5 lTmax
    8r 3.3318898e+02 7.36e-01 9.99e+02  -0.1 0.00e+00  12.7 0.00e+00 4.77e-
 07R 22
    9r 3.3150176e+02 2.21e-02 9.92e+02  -0.1 9.32e+01    -  4.39e-03 7.82e-
 03f  1
 iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du
 alpha_pr  ls
   10r 3.3150318e+02 2.09e-02 9.83e+02  -0.1 5.32e+00   2.0 1.00e+00 1.51e-
 03f  1 Nhj
   11r 3.3153198e+02 1.70e-03 7.21e+01  -0.1 5.32e-01   1.5 1.00e+00 9.44e-
 01f  1
   12r 3.3110451e+02 2.13e-02 5.51e+01  -0.1 9.25e-02    -  1.49e-01 3.08e-
 01f  1
   13r 3.3155768e+02 1.59e-04 3.93e+01  -0.8 3.95e-02    -  2.50e-01 5.32e-
 01f  1
   14r 3.3130147e+02 9.52e-03 3.54e+01  -0.8 1.07e-01    -  1.07e-02 9.77e-
 02f  1
   15r 3.3142958e+02 4.68e-03 3.69e+01  -0.8 4.04e+00    -  3.07e-05 1.20e-
 03f  2
   16r 3.3143266e+02 2.27e-05 2.75e+01  -0.8 4.83e-03   3.8 1.00e+00
 1.00e+00f  1
   17r 3.3143262e+02 3.97e-05 1.49e+03  -0.8 1.79e-03   3.3 1.00e+00 3.62e-
 02f  2
   18r 3.3143264e+02 2.32e-05 2.54e-01  -0.8 7.54e-05   2.8 1.00e+00
 1.00e+00f  1
   19r 3.3157577e+02 1.97e-07 6.34e-03  -3.4 1.57e-03    -  1.00e+00
 1.00e+00f  1
 Cannot recompute multipliers for feasibility problem.  Error in
 eq_mult_calculator

 Number of Iterations....: 19

                                    (scaled)                 (unscaled)
 Objective...............:   3.3157577391252443e+02
 3.3157577391252443e+02
 Dual infeasibility......:   8.5256251112673996e+10
 8.5256251112673996e+10
 Constraint violation....:   1.9683941587800291e-07
 1.9683941587800291e-07
 Complementarity.........:   0.0000000000000000e+00
 0.0000000000000000e+00
 Overall NLP error.......:   1.9683941587800291e-07
 8.5256251112673996e+10


 Number of objective function evaluations             = 53
 Number of objective gradient evaluations             = 10
 Number of equality constraint evaluations            = 54
 Number of inequality constraint evaluations          = 0
 Number of equality constraint Jacobian evaluations   = 21
 Number of inequality constraint Jacobian evaluations = 0
 Number of Lagrangian Hessian evaluations             = 19
 Total CPU secs in IPOPT (w/o function evaluations)   =      0.010
 Total CPU secs in NLP function evaluations           =      0.000

 EXIT: Optimal Solution Found.

 Ipopt 3.3dev: Optimal Solution Found
 }}}

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Ticket URL: <https://projects.coin-or.org/Ipopt/ticket/69>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.