Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:23:43 2012

Optimize a model with 4670 rows, 756 columns and 14632 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 4695 rows, 754 columns, 20148 nonzeros
Variable types: 0 continuous, 754 integer (754 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.796407e+00, 4392 iterations, 0.32 seconds

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

     0     0    3.79641    0  530   27.00000    3.79641  85.9%     -    0s
     0     0    6.00000    0   52   27.00000    6.00000  77.8%     -    1s
H    0     0                      25.0000000    6.00000  76.0%     -    1s
H    0     0                      13.0000000    6.00000  53.8%     -    1s
H    0     0                       7.0000000    6.00000  14.3%     -    1s
*    0     0               0       6.0000000    6.00000   0.0%     -    1s

Cutting planes:
  Clique: 4
  Zero half: 43

Explored 0 nodes (8404 simplex iterations) in 1.20 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%