[Scip] Interrupt solving immediately when a solution is found

[Stefan Heinz]

Hi Frank,

> I am looking for a way to stopp the solving of a MIP immediately after
> SCIP finds a solution.
If you set the solution limit to one than SCIP stops right after the first 
solution is found. For the interactive shell this looks like:

SCIP> set limits solutions 1 

> The problem is that I want to terminate the solving after the first
> negative primal solution has been found.
>
> Now I check all solutions in the pool for negativity by using a
> heuristic. But the heuristic is called to seldom.
To be able to check every solution (almost) right after the solution was 
found, you could implement an event handler which waits for the event that a 
solution is found (SCIP_EVENTTYPE_SOLFOUND) and executes then your method.


Best Stefan

> Sometimes my heuristic is applied 20 seconds after a negative solution
> has bben found.
>
>
>
> To set an objective limit slightly negative and terminate after the
> first solution has been found does not work. If no solution is found in
> the root node SCIP accepts the objective limit as solution.
>
>
>
>
>
> Thanks,
>
>
>
> Regards, Frank
>
>
>
> ________________________________________________________
>
>
>
> Frank Hennig  -  Naval Architect, PhD Candidate
>
>
>
> Department of Industrial Economics and Technology Management
>
> Norwegian University of Science and Technology
>
> Alfred Getz veg 3
>
> NO-7491 Trondheim, Norway
>
>
>
> Phone:   +49 30 314 23 598
>
> Email:      frank.hennig at iot.ntnu.no