Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:12 2012

Optimize a model with 3119 rows, 600 columns and 9838 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3141 rows, 598 columns, 17692 nonzeros
Variable types: 0 continuous, 598 integer (598 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 6.680851e+00, 1987 iterations, 0.11 seconds

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

     0     0    6.68085    0  127   24.00000    6.68085  72.2%     -    0s
H    0     0                      17.0000000    6.68085  60.7%     -    0s
     0     0    7.00000    0   31   17.00000    7.00000  58.8%     -    0s
H    0     0                       7.0000000    7.00000   0.0%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 2

Explored 0 nodes (5018 simplex iterations) in 0.55 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%