[Cbc] Non Deterministic solution

[Yves Touchard]

Hello,

I have just a got a determinism problem with a constraint file:

You will find at https://www.dropbox.com/s/uzbmgj48kvtd5yj/pb.tar.gz?dl=0, a tar file containing five files:

*        pb.lp is the constraint file.

*        pbTriv.sol is a solution file of the trivial problem (same problem with relaxed constraints) used for mipstart.

*        pb.prio is the priority file.

*        pbCmd1.sol is the most frequent solution provided by coin.

*        pbCmd1Alt.sol is the alternative solution (not easy to catch it...).

Command line is:
bin/cbc pb.lp threads 104 ratio 0.05 mipstart pbTriv.sol priority pb.prio divingP on divingV on divesolves 301 multiple 4 branch printingOptions normal solution pb.sol
Cbc coin is 2.9.7 rev:2232 compiled with gcc 4.9.0

Could you have a look on it, please?

Thanks

Yves

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