Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:56:50 2014

Optimize a model with 47743 rows, 47742 columns and 142790 nonzeros
Presolve time: 1.26s
Presolved: 47743 rows, 47742 columns, 142790 nonzeros
Variable types: 0 continuous, 47742 integer (47742 binary)
Found heuristic solution: objective 22.8484333

Root relaxation: objective 1.526732e+01, 2717 iterations, 0.40 seconds

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

*    0     0               0      15.2673240   15.26732  0.00%     -    1s

Explored 0 nodes (2717 simplex iterations) in 1.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.526732403412e+01, best bound 1.526732403412e+01, gap 0.0%