Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:52:25 2014

Optimize a model with 47307 rows, 47306 columns and 141484 nonzeros
Presolve time: 1.22s
Presolved: 47307 rows, 47306 columns, 141484 nonzeros
Variable types: 0 continuous, 47306 integer (47306 binary)
Found heuristic solution: objective 20.4415345

Root relaxation: objective 1.468122e+01, 2709 iterations, 0.37 seconds

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

*    0     0               0      14.6812162   14.68122  0.00%     -    1s

Explored 0 nodes (2709 simplex iterations) in 1.71 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.468121619836e+01, best bound 1.468121619836e+01, gap 0.0%