Gurobi 5.6.3 (linux64) logging started Wed Oct  8 01:11:07 2014

Optimize a model with 31863 rows, 31862 columns and 95230 nonzeros
Presolve time: 0.77s
Presolved: 31863 rows, 31862 columns, 95230 nonzeros
Variable types: 0 continuous, 31862 integer (31862 binary)
Found heuristic solution: objective 21.7569670

Root relaxation: objective 1.354980e+01, 2260 iterations, 0.24 seconds

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

*    0     0               0      13.5498039   13.54980  0.00%     -    1s

Explored 0 nodes (2260 simplex iterations) in 1.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.354980392552e+01, best bound 1.354980392552e+01, gap 0.0%