Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:26:59 2014

Optimize a model with 651 rows, 650 columns and 1900 nonzeros
Presolve time: 0.01s
Presolved: 651 rows, 650 columns, 1900 nonzeros
Variable types: 0 continuous, 650 integer (650 binary)
Found heuristic solution: objective 8.9695803

Root relaxation: objective 4.807121e+00, 219 iterations, 0.00 seconds

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

*    0     0               0       4.8071209    4.80712  0.00%     -    0s

Explored 0 nodes (219 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.807120892439e+00, best bound 4.807120892439e+00, gap 0.0%