Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:47:22 2014

Optimize a model with 46873 rows, 46872 columns and 140184 nonzeros
Presolve time: 1.21s
Presolved: 46873 rows, 46872 columns, 140184 nonzeros
Variable types: 0 continuous, 46872 integer (46872 binary)
Found heuristic solution: objective 23.3531503

Root relaxation: objective 1.492736e+01, 2753 iterations, 0.38 seconds

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

*    0     0               0      14.9273588   14.92736  0.00%     -    1s

Explored 0 nodes (2753 simplex iterations) in 1.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.492735881950e+01, best bound 1.492735881950e+01, gap 0.0%