[SCIP] calling CONSINITLP

[Ambros Gleixner]

Hi James,

This happens at the first relaxation of each node.

Best,
Ambros


Am 09.01.2024 um 11:52 schrieb James Cussens:
> Hi all and Happy New Year,
> 
> I am looking into using some superindicator constraints (in a pricer). 
> Once the binary variable for a given superindicator constraint is fixed 
> to one (by e.g. branching) I would like SCIPinitlpCons to be called on 
> the corresponding "slack" constraint.
> 
> Looking at the CONSINITLP method of the superindicator constraint 
> handler, I see that this happens if that method is called. But I am not 
> clear when and how often CONSINITLP is called. The documentation tells 
> me that "The CONSINITLP callback is executed before the first LP 
> relaxation is solved." Is this the first LP relaxation of each node (ie 
> before any pricing or cutting for that node), or only the first LP 
> relaxation of the root?
> 
> James
> 
> James Cussens
> Room MVB 3.26
> School of Computer Science, University of Bristol
> Phone: +44 (0)117 455 8723
> https://jcussens.github.io/ <https://jcussens.github.io/>
> 
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