Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012

Optimize a model with 447 rows, 43 columns and 894 nonzeros
Presolve removed 307 rows and 0 columns
Presolve time: 0.00s
Presolved: 140 rows, 43 columns, 734 nonzeros
Variable types: 0 continuous, 43 integer (43 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 8.500000e+00, 85 iterations, 0.00 seconds

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

     0     0    8.50000    0   37    6.00000    8.50000  41.7%     -    0s
H    0     0                       7.0000000    8.50000  21.4%     -    0s
H    0     0                       8.0000000    8.50000  6.25%     -    0s

Explored 0 nodes (89 simplex iterations) in 0.01 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%