Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:40:59 2012

Optimize a model with 5800 rows, 870 columns and 18154 nonzeros
Presolve time: 0.06s
Presolved: 5800 rows, 870 columns, 25705 nonzeros
Variable types: 0 continuous, 870 integer (870 binary)
Found heuristic solution: objective 14.0000000

Root relaxation: objective 2.000000e+00, 2843 iterations, 0.17 seconds

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

     0     0    2.00000    0   58   14.00000    2.00000  85.7%     -    0s
H    0     0                       9.0000000    2.00000  77.8%     -    0s
     0     0    2.00000    0   58    9.00000    2.00000  77.8%     -    0s
     0     0    2.00000    0   58    9.00000    2.00000  77.8%     -    0s
H    0     0                       8.0000000    2.00000  75.0%     -    0s
     0     0    2.00000    0   58    8.00000    2.00000  75.0%     -    0s
     0     0    2.00000    0   58    8.00000    2.00000  75.0%     -    0s
     0     0    2.00000    0   58    8.00000    2.00000  75.0%     -    0s
     0     0    2.00000    0   58    8.00000    2.00000  75.0%     -    0s
     0     2    2.00000    0   58    8.00000    2.00000  75.0%     -    0s
H   27    19                       7.0000000    3.00000  57.1%   436    2s
    85    43    5.00000    6  133    7.00000    4.00000  42.9%   368    5s
   277    97    5.00000    8   87    7.00000    4.50000  35.7%   257   10s
   470   109    6.00000    8   80    7.00000    5.00000  28.6%   233   15s
   603   135    6.00000   13   48    7.00000    6.00000  14.3%   231   21s

Explored 608 nodes (161724 simplex iterations) in 23.68 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%