Gurobi 5.6.3 (linux64) logging started Tue Oct  7 23:35:57 2014

Optimize a model with 20307 rows, 20306 columns and 60634 nonzeros
Presolve time: 0.44s
Presolved: 20307 rows, 20306 columns, 60634 nonzeros
Variable types: 0 continuous, 20306 integer (20306 binary)
Found heuristic solution: objective 17.1985701

Root relaxation: objective 1.156653e+01, 1586 iterations, 0.13 seconds

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

*    0     0               0      11.5665308   11.56653  0.00%     -    0s

Explored 0 nodes (1586 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.156653076174e+01, best bound 1.156653076174e+01, gap 0.0%