[Scip] Deleting variables

[Timo Berthold]

Hi Jonas,

did you call SCIPfreeTransform() after solving/before modifying the
sub-SCIP?
What does the deleted flag of SCIPdelVar() return?
Did you remove the variable from the constraints yourself, before
deleting it?

> It is important to really delete these variables and not just fix them to zero.

Why is this?

Cheers
Timo

Am 23.04.2013 08:53, schrieb Jonas Witt:
> Hi all,
>
> I'm having problems with deleting variables. I know you list deleting 
> variables as a known bug on your website, but maybe you can still help me.
>
> I use a sub-SCIP and initialize it with some initial variables and 
> constraints. This should work as some kind of pattern. So everytime I 
> use this sub-SCIP, I want to add new variables and constraints to it, 
> solve it and then delete the recently added variables and constraints. 
> So after this solving proccess, the sub-SCIP should only consist of 
> initial variables and constraints.
>
> I delete the recently added constraints with SCIPdelCons(). After this 
> deletion the recently added variables do not belong to any constraint of 
> the problem. Then I tried to delete these variables via SCIPdelVar() but 
> failed (the variables still belong to the problem). It is important to 
> really delete these variables and not just fix them to zero.
>
> How can I use the sub-SCIP the way I have described it without copying 
> the whole problem?
>
> Best regards,
> Jonas
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