Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:16:19 2012

Optimize a model with 4237 rows, 702 columns and 13284 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 4235 rows, 700 columns, 19444 nonzeros
Variable types: 0 continuous, 700 integer (700 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 4.000000e+00, 3776 iterations, 0.19 seconds

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

     0     0    4.00000    0  369   26.00000    4.00000  84.6%     -    0s
H    0     0                      22.0000000    4.00000  81.8%     -    0s
     0     0    6.00000    0   85   22.00000    6.00000  72.7%     -    0s
H    0     0                      18.0000000    6.00000  66.7%     -    0s
H    0     0                       6.0000000    6.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 2
  Zero half: 2

Explored 0 nodes (6473 simplex iterations) in 0.82 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%