Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:01:17 2014

Optimize a model with 42643 rows, 42642 columns and 127514 nonzeros
Presolve time: 1.19s
Presolved: 42643 rows, 42642 columns, 127514 nonzeros
Variable types: 0 continuous, 42642 integer (42642 binary)
Found heuristic solution: objective 20.4249094

Root relaxation: objective 1.486006e+01, 2750 iterations, 0.40 seconds

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

*    0     0               0      14.8600604   14.86006  0.00%     -    1s

Explored 0 nodes (2750 simplex iterations) in 1.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.486006042284e+01, best bound 1.486006042284e+01, gap 0.0%