[Couenne] "best objective 1e+50"

[Luca Mencarelli]

The complete output is:

Cbc0001I Search completed - best objective 1e+50, took 83376 iterations
and 1970 nodes (41.36 seconds)
Cbc0035I Maximum depth 40, 0 variables fixed on reduced cost

 	"Finished"

Linearization cuts added at root node:       1450
Linearization cuts added in total:           1450  (separation time:
0.005999s)
Total solve time:                         41.3867s (41.3867s in
branch-and-bound)
Lower bound:                             -1.05893
Upper bound:                             -1.05893  (gap: 0.00%)
Branch-and-bound nodes:                      1970
Performance of                           FBBT:	    1.82973s,     1744
runs. fix:    4.87378 shrnk:    59.0572 ubd:          0 2ubd:          0
infeas:        445

Thanks again,
Luca
-- 
"Nothing at all takes place in the universe in which some rule of maximum
or minimum does not appear." Leonhard Euler (1707-1783)
---------------------------------------------------------
Luca Mencarelli
PhD Candidate at LIX (UMR 7161), Ecole Polytechnique
91128 Palaiseau CEDEX, France
Office: 2072 (Bâtiment Alan Turing, second floor)
E-mail address: mencarelli at lix.polytechnique.fr
Twitter: @l_mencarelli

> Dear all,
>
> I am running several tests with Couenne and I have the following problem.
> For several instances Couenne finds "best objective 1e+50" (unbounded
> problems), but for those instances I have a feasible point. I tried to
> disable the aggressive bound tightening options, but the problem remains
> unchanged. I would like to ask there are other options that, in this case,
> I can consider or a different settings for Couenne parameter (I use the
> default settings, a part from the exception I've already discussed).
>
> Thanks in advance. Best regards,
> Luca
> --
> "Nothing at all takes place in the universe in which some rule of maximum
> or minimum does not appear." Leonhard Euler (1707-1783)
> ---------------------------------------------------------
> Luca Mencarelli
> PhD Candidate at LIX (UMR 7161), Ecole Polytechnique
> 91128 Palaiseau CEDEX, France
> Office: 2072 (Bâtiment Alan Turing, second floor)
> E-mail address: mencarelli at lix.polytechnique.fr
> Twitter: @l_mencarelli
>
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