Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:33:08 2014

Optimize a model with 45583 rows, 45582 columns and 136320 nonzeros
Presolve time: 1.16s
Presolved: 45583 rows, 45582 columns, 136320 nonzeros
Variable types: 0 continuous, 45582 integer (45582 binary)
Found heuristic solution: objective 21.0840308

Root relaxation: objective 1.488828e+01, 3019 iterations, 0.48 seconds

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

*    0     0               0      14.8882813   14.88828  0.00%     -    1s

Explored 0 nodes (3019 simplex iterations) in 1.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.488828127929e+01, best bound 1.488828127929e+01, gap 0.0%