[Cbc] Determinism with divingV option

Yves Touchard ytouch at dxo.com
Fri Feb 6 09:03:14 EST 2015


Hello,

I got a determinism problem with the lp file (and maybe others) located here: https://www.dropbox.com/s/0i7c84lbm2pvyl3/t1.lp?dl=0.
The solution file is different  whether the divingV option is set or not.
Command-line is the following:

bin/cbc t1.lp threads 104 ratio 0.05 cutlength 30 divingV on divesolves 301 multiple 1 branch printingOptions rows solution t1_0.sol

Solution files are located here:

  *   Without -> https://www.dropbox.com/s/zcu8kwv9ukipaqe/t1_0.sol?dl=0
  *   With -> https://www.dropbox.com/s/jc1co4yeg9i13vw/t1_1.sol?dl=0

I tried with both trunk revision 2102 and 2128.
Could you tell if it is an expected behaviour or not?

Thanks & Regards

Yves

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