[SCIP] Why does an integer solution trigger the branching?

[Marc Pfetsch]

The priority of the branching rule should be negative, so it comes after 
the integrality constraint handler.


If you do not do anything, does SCIP branch by itself?


On 17/04/2025 15:29, 杨瑞光 wrote:
> Hi,
> 
> everyone,
> 
> I am using SCIP to implement branch pricing and solve a VRP problem. I 
> customized a branch rule and included it in SCIP using 
> SCIPincludeBranchrule. But I found that the integer solution at the root 
> node triggered the branch (the integer variables I obtained using 
> SCIPgetSolVal at the root node were all integers), and I don't know why 
> this happened. Why has the integer solution been obtained but not exited 
> the solution and triggered the branching? How should I handle this issue?
> 
> Thanks a lot!
> 
> Best wishes
> 
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