Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:23:24 2012

Optimize a model with 4751 rows, 756 columns and 14875 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 4776 rows, 754 columns, 19944 nonzeros
Variable types: 0 continuous, 754 integer (754 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.818182e+00, 4778 iterations, 0.26 seconds

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

     0     0    3.81818    0  498   27.00000    3.81818  85.9%     -    1s
     0     0    6.00000    0   98   27.00000    6.00000  77.8%     -    1s
H    0     0                      20.0000000    6.00000  70.0%     -    1s
H    0     0                       7.0000000    6.00000  14.3%     -    1s
     0     0    6.00000    0   18    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   14    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   77    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   14    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   18    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   18    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   71    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   71    7.00000    6.00000  14.3%     -    1s
     0     2    6.00000    0   71    7.00000    6.00000  14.3%     -    1s

Cutting planes:
  Clique: 3
  Zero half: 2

Explored 11 nodes (14482 simplex iterations) in 1.91 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%