Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:07:06 2012

Optimize a model with 7129 rows, 992 columns and 22225 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.08s
Presolved: 7158 rows, 990 columns, 26315 nonzeros
Variable types: 0 continuous, 990 integer (990 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 3.468354e+00, 5994 iterations, 0.39 seconds

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

     0     0    3.46835    0  860   31.00000    3.46835  88.8%     -    0s
     0     0    6.00000    0  123   31.00000    6.00000  80.6%     -    1s
H    0     0                      18.0000000    6.00000  66.7%     -    1s
H    0     0                       8.0000000    6.00000  25.0%     -    1s
     0     0    6.00000    0  128    8.00000    6.00000  25.0%     -    1s
     0     0    6.00000    0  109    8.00000    6.00000  25.0%     -    3s
H    0     0                       7.0000000    6.00000  14.3%     -    3s
     0     0    6.00000    0  105    7.00000    6.00000  14.3%     -    3s
     0     0 infeasible    0         7.00000    6.00001  14.3%     -    3s

Explored 0 nodes (16713 simplex iterations) in 3.63 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%