Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:18:49 2012

Optimize a model with 4617 rows, 756 columns and 14499 nonzeros
Presolve time: 0.05s
Presolved: 4617 rows, 756 columns, 21780 nonzeros
Variable types: 0 continuous, 756 integer (756 binary)
Found heuristic solution: objective 11.0000000

Root relaxation: objective 2.000000e+00, 1109 iterations, 0.05 seconds

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

     0     0    2.00000    0   54   11.00000    2.00000  81.8%     -    0s
H    0     0                       8.0000000    2.00000  75.0%     -    0s
     0     0    2.00000    0   54    8.00000    2.00000  75.0%     -    0s
     0     0    2.00000    0   54    8.00000    2.00000  75.0%     -    0s
H    0     0                       7.0000000    2.00000  71.4%     -    0s
     0     0    2.00000    0   54    7.00000    2.00000  71.4%     -    0s
     0     0    2.42857    0  114    7.00000    2.42857  65.3%     -    1s
     0     0    5.00000    0  168    7.00000    5.00000  28.6%     -    1s
     0     0    5.00000    0  189    7.00000    5.00000  28.6%     -    1s
     0     0    5.00000    0   76    7.00000    5.00000  28.6%     -    2s
     0     0    5.00000    0   54    7.00000    5.00000  28.6%     -    2s
     0     0    5.50000    0   46    7.00000    5.50000  21.4%     -    3s
     0     0    6.00000    0  115    7.00000    6.00000  14.3%     -    3s
H    0     0                       6.0000000    6.00000   0.0%     -    3s

Cutting planes:
  Clique: 44
  Zero half: 1

Explored 0 nodes (20716 simplex iterations) in 3.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%