Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:08:04 2012

Optimize a model with 2749 rows, 506 columns and 8644 nonzeros
Presolve removed 858 rows and 2 columns
Presolve time: 0.06s
Presolved: 1913 rows, 504 columns, 11408 nonzeros
Variable types: 0 continuous, 504 integer (504 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 6.000000e+00, 1784 iterations, 0.16 seconds

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

     0     0    6.00000    0   26   21.00000    6.00000  71.4%     -    0s
H    0     0                       9.0000000    6.00000  33.3%     -    0s
H    0     0                       8.0000000    6.00000  25.0%     -    0s
     0     0    6.00000    0   73    8.00000    6.00000  25.0%     -    0s
H    0     0                       7.0000000    6.00000  14.3%     -    0s
     0     0    6.00000    0   45    7.00000    6.00000  14.3%     -    0s
H    0     0                       6.0000000    6.00000   0.0%     -    0s

Explored 0 nodes (5523 simplex iterations) in 0.63 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%