Gurobi 5.6.3 (linux64) logging started Wed Oct  8 04:53:10 2014

Optimize a model with 52213 rows, 52212 columns and 156180 nonzeros
Presolve time: 1.39s
Presolved: 52213 rows, 52212 columns, 156180 nonzeros
Variable types: 0 continuous, 52212 integer (52212 binary)
Found heuristic solution: objective 24.3174395

Root relaxation: objective 1.509665e+01, 2490 iterations, 0.37 seconds

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

*    0     0               0      15.0966468   15.09665  0.00%     -    1s

Explored 0 nodes (2490 simplex iterations) in 1.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.509664678242e+01, best bound 1.509664678242e+01, gap 0.0%