Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:41:01 2014

Optimize a model with 4557 rows, 4556 columns and 13534 nonzeros
Presolve time: 0.11s
Presolved: 4557 rows, 4556 columns, 13534 nonzeros
Variable types: 0 continuous, 4556 integer (4556 binary)
Found heuristic solution: objective 11.6713245

Root relaxation: objective 8.003036e+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       8.0030358    8.00304  0.00%     -    0s

Explored 0 nodes (759 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.003035814759e+00, best bound 8.003035814759e+00, gap 0.0%