Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:35:37 2014

Optimize a model with 3661 rows, 3660 columns and 10860 nonzeros
Presolve time: 0.08s
Presolved: 3661 rows, 3660 columns, 10860 nonzeros
Variable types: 0 continuous, 3660 integer (3660 binary)
Found heuristic solution: objective 12.7972475

Root relaxation: objective 8.235270e+00, 759 iterations, 0.02 seconds

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

*    0     0               0       8.2352702    8.23527  0.00%     -    0s

Explored 0 nodes (759 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.235270188546e+00, best bound 8.235270188546e+00, gap 0.0%