Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:22 2012

Optimize a model with 761 rows, 55 columns and 1522 nonzeros
Presolve removed 549 rows and 0 columns
Presolve time: 0.01s
Presolved: 212 rows, 55 columns, 1245 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.461428e+00, 107 iterations, 0.00 seconds

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

     0     0    9.46143    0   43    6.00000    9.46143  57.7%     -    0s
H    0     0                       7.0000000    9.46143  35.2%     -    0s
     0     0    9.00000    0   45    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   46    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   43    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   47    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   47    7.00000    9.00000  28.6%     -    0s
H    0     0                       8.0000000    9.00000  12.5%     -    0s
     0     2    9.00000    0   47    8.00000    9.00000  12.5%     -    0s

Explored 3 nodes (703 simplex iterations) in 0.09 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%