Gurobi 5.6.3 (linux64) logging started Wed Oct  8 04:59:03 2014

Optimize a model with 52671 rows, 52670 columns and 157552 nonzeros
Presolve time: 1.35s
Presolved: 52671 rows, 52670 columns, 157552 nonzeros
Variable types: 0 continuous, 52670 integer (52670 binary)
Found heuristic solution: objective 22.5258198

Root relaxation: objective 1.523305e+01, 3156 iterations, 0.49 seconds

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

*    0     0               0      15.2330501   15.23305  0.00%     -    1s

Explored 0 nodes (3156 simplex iterations) in 1.98 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.523305010275e+01, best bound 1.523305010275e+01, gap 0.0%