Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:53 2012

Optimize a model with 6929 rows, 930 columns and 21568 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.09s
Presolved: 6957 rows, 928 columns, 27782 nonzeros
Variable types: 0 continuous, 928 integer (928 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.555556e+00, 5777 iterations, 0.39 seconds

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

     0     0    3.55556    0  811   30.00000    3.55556  88.1%     -    0s
H    0     0                      28.0000000    3.55556  87.3%     -    0s
H    0     0                      23.0000000    3.55556  84.5%     -    0s
     0     0    6.01044    0  800   23.00000    6.01044  73.9%     -    1s
H    0     0                      16.0000000    6.01044  62.4%     -    1s
     0     0    6.03692    0  803   16.00000    6.03692  62.3%     -    1s
     0     0    6.03692    0  727   16.00000    6.03692  62.3%     -    1s
H    0     0                      12.0000000    6.03692  49.7%     -    2s
H    0     0                      10.0000000    6.03692  39.6%     -    3s
     0     2    6.09924    0  727   10.00000    6.09924  39.0%     -    3s
*   19     3              19       7.0000000    7.00000   0.0%   140    3s

Cutting planes:
  Gomory: 22
  Zero half: 13

Explored 20 nodes (12143 simplex iterations) in 3.99 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%