Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:49:22 2012

Optimize a model with 7110 rows, 930 columns and 22140 nonzeros
Presolve time: 0.06s
Presolved: 7110 rows, 930 columns, 30093 nonzeros
Variable types: 0 continuous, 930 integer (930 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 2.000000e+00, 744 iterations, 0.03 seconds

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

     0     0    2.00000    0   60   18.00000    2.00000  88.9%     -    0s
H    0     0                      13.0000000    2.00000  84.6%     -    0s
H    0     0                      11.0000000    2.00000  81.8%     -    0s
     0     0    2.00000    0   60   11.00000    2.00000  81.8%     -    0s
H    0     0                      10.0000000    2.00000  80.0%     -    0s
     0     0    2.00000    0   60   10.00000    2.00000  80.0%     -    0s
     0     0    2.00000    0   60   10.00000    2.00000  80.0%     -    1s
     0     0    2.00000    0   60   10.00000    2.00000  80.0%     -    1s
H    0     0                       9.0000000    2.00000  77.8%     -    1s
     0     0    2.00000    0   60    9.00000    2.00000  77.8%     -    2s
     0     0    2.00000    0   60    9.00000    2.00000  77.8%     -    2s
H    0     0                       8.0000000    2.00000  75.0%     -    3s
     0     2    2.00000    0   60    8.00000    2.00000  75.0%     -    3s
     6     8    5.00000    4   52    8.00000    3.00000  62.5%  1549    5s
    74    23    6.00000    6   82    8.00000    4.00000  50.0%   588   10s
   248    72 infeasible   17         8.00000    5.00000  37.5%   319   15s
   459   109    6.00000   13   50    8.00000    5.60000  30.0%   255   20s

Explored 602 nodes (154620 simplex iterations) in 23.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%