problems

[Mohammed Forhad]

Dear all,
I am solveing a model of NIP. I have obtained following output. What
is the problems of my model ?

ampl: reset;
ampl: model vb4.mod;
ampl: data vb3.dat;
ampl: option solver bonmin;
ampl: solve;
bonmin:

******************************************************************************
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
******************************************************************************

NOTE: You are using Ipopt by default with the MUMPS linear solver.
Other linear solvers might be more efficient (see Ipopt documentation).

NLP0012I
Num Status Obj It time
NLP0013I 1 OPT -0.002480808070782317 141 0.406
NLP0013I 2 INFEAS 629.4451809506057 158 0.485
NLP0013I 3 INFEAS 926891.2113868392 201 0.672
Cbc0001I Search completed - best objective 1e+050, took 0 iterations
and 0 nodes (1.16 seconds)
Cbc0032I Strong branching done 1 times (359 iterations), fathomed 1
nodes and fixed 0 variables
Cbc0035I Maximum depth 0, 0 variables fixed on reduc
"Aborted"
Ipopt exited with error code -13 Invalid number detected

Error encountered in optimization.
ampl: reset;
ampl: model vb4.mod;
ampl: data vb3.dat;
ampl: option solver minos;
ampl: solve;
MINOS 5.5: ignoring integrality of 8 variables
MINOS 5.5: optimal solution found.
18 iterations, objective 357582.2917
Nonlin evals: obj = 43, grad = 42, constrs = 43, Jac = 42.
ampl:

Best Regards
Uddin

[Hans Mittelmann]

Are you sure your model in integer feasible? Simple to submit to NEOS/
couenne, NEOS/knitro, NEOS/filmint, or NEOS/minlp to get additional
info.

On Jun 2, 8:11 pm, Mohammed Forhad <kforha...@gmail.com> wrote:
> Dear all,
> I am solveing a model of NIP. I have obtained following output. What
> is the problems of my model ?
>
> ampl: reset;
> ampl: model vb4.mod;
> ampl: data vb3.dat;
> ampl: option solver bonmin;
> ampl: solve;
> bonmin:
>
> ******************************************************************************
> 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 visithttp://projects.coin-or.org/Ipopt