Gurobi 5.6.3 (linux64) logging started Wed Oct  8 02:05:38 2014

Optimize a model with 37443 rows, 37442 columns and 111940 nonzeros
Presolve time: 0.96s
Presolved: 37443 rows, 37442 columns, 111940 nonzeros
Variable types: 0 continuous, 37442 integer (37442 binary)
Found heuristic solution: objective 20.5946303

Root relaxation: objective 1.383618e+01, 2333 iterations, 0.27 seconds

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

*    0     0               0      13.8361837   13.83618  0.00%     -    1s

Explored 0 nodes (2333 simplex iterations) in 1.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.383618371498e+01, best bound 1.383618371498e+01, gap 0.0%