[SCIP] Question about node numbering

Franek Stark franek.stark at dfki.de
Mon Jun 30 09:05:08 CEST 2025


Hi,

I am using event handlers to track the B&B process for later ML applications.
Thereby, I encounter the following issue:

When a  SCIP_EVENTTYPE_SOLEVENT is triggered, I extract the solution with  SCIPeventGetSol(). Now, the node number associated with this solution (I get it via  SCIPgetSolNodenum() ), does not refer to the node number of the current node being processed. It sometimes even refers to Node numbers, from nodes in the future or from nodes that have been pruned as infeasible a long time ago in the solving process.

Does SCIPgetSolNodenum() refer to a different node numbering than SCIPnodeGetNumber() ?

Thanks for any help on this.
Best regards,

Franek Stark




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Franek Stark, M.Sc.

Robotics Researcher

Robotics Innovation Center



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