Gurobi 5.6.3 (linux64) logging started Tue Oct  7 23:18:53 2014

Optimize a model with 19183 rows, 19182 columns and 57270 nonzeros
Presolve time: 0.40s
Presolved: 19183 rows, 19182 columns, 57270 nonzeros
Variable types: 0 continuous, 19182 integer (19182 binary)
Found heuristic solution: objective 18.8578574

Root relaxation: objective 1.221327e+01, 1951 iterations, 0.16 seconds

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

*    0     0               0      12.2132683   12.21327  0.00%     -    0s

Explored 0 nodes (1951 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.221326827055e+01, best bound 1.221326827055e+01, gap 0.0%