[SCIP] forcecut in SCIPaddCut()

[dponce at us.es]

Hello list, 

I'm missing something about parameter forcecut in function SCIPaddCut() 

Taking into acount this previous question 

http://listserv.zib.de/pipermail/scip/2013-June/001521.html 

and Tobias Achterberg's thesis Section 3.3.8, I though that next two
options will be similar 

Option 1 

forcecut = false 

SCIP_CALL( SCIPsetIntParam(scip, "separating/maxroundsroot", -1) );
SCIP_CALL( SCIPsetIntParam(scip, "separating/maxrounds", 0) );
SCIP_CALL( SCIPsetRealParam(scip, "separating/minefficacyroot", 0.0) ); 

Option 2 

forcecut = true 

SCIP_CALL( SCIPsetIntParam(scip, "separating/maxroundsroot", -1) );
SCIP_CALL( SCIPsetIntParam(scip, "separating/maxrounds", 0) ); 

But really Option 1 does not add cuts. What's going on? I guessed I was
not requiring nothing to cuts. 

With 

SCIP_CALL( SCIPsetRealParam(scip, "separating/minorthoroot", 0.0) ); 

I have the same. And I cannot change parameter separating/objparalfrac. 

Best and thanks. 

Diego.

  
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