Gurobi 5.6.3 (linux64) logging started Wed Oct  8 01:01:31 2014

Optimize a model with 30801 rows, 30800 columns and 92050 nonzeros
Presolve time: 0.77s
Presolved: 30801 rows, 30800 columns, 92050 nonzeros
Variable types: 0 continuous, 30800 integer (30800 binary)
Found heuristic solution: objective 19.8307124

Root relaxation: objective 1.320489e+01, 2100 iterations, 0.21 seconds

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

*    0     0               0      13.2048923   13.20489  0.00%     -    1s

Explored 0 nodes (2100 simplex iterations) in 1.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.320489230259e+01, best bound 1.320489230259e+01, gap 0.0%