Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:38:20 2014

Optimize a model with 4161 rows, 4160 columns and 12352 nonzeros
Presolve time: 0.10s
Presolved: 4161 rows, 4160 columns, 12352 nonzeros
Variable types: 0 continuous, 4160 integer (4160 binary)
Found heuristic solution: objective 10.6703340

Root relaxation: objective 7.659311e+00, 657 iterations, 0.02 seconds

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

*    0     0               0       7.6593108    7.65931  0.00%     -    0s

Explored 0 nodes (657 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.659310847631e+00, best bound 7.659310847631e+00, gap 0.0%