Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:13:23 2014

Optimize a model with 25441 rows, 25440 columns and 76002 nonzeros
Presolve time: 0.58s
Presolved: 25441 rows, 25440 columns, 76002 nonzeros
Variable types: 0 continuous, 25440 integer (25440 binary)
Found heuristic solution: objective 19.4224149

Root relaxation: objective 1.290766e+01, 1897 iterations, 0.18 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

*    0     0               0      12.9076622   12.90766  0.00%     -    0s

Explored 0 nodes (1897 simplex iterations) in 0.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.290766222308e+01, best bound 1.290766222308e+01, gap 0.0%