Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:28:23 2014

Optimize a model with 1407 rows, 1406 columns and 4144 nonzeros
Presolve time: 0.02s
Presolved: 1407 rows, 1406 columns, 4144 nonzeros
Variable types: 0 continuous, 1406 integer (1406 binary)
Found heuristic solution: objective 7.5151178

Root relaxation: objective 6.177229e+00, 420 iterations, 0.01 seconds

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

*    0     0               0       6.1772290    6.17723  0.00%     -    0s

Explored 0 nodes (420 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.177228966199e+00, best bound 6.177228966199e+00, gap 0.0%