Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:17 2012

Optimize a model with 3455 rows, 600 columns and 10846 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3477 rows, 598 columns, 19856 nonzeros
Variable types: 0 continuous, 598 integer (598 binary)

Root relaxation: objective 5.384615e+00, 3678 iterations, 0.25 seconds

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

     0     0    5.38462    0  191          -    5.38462     -      -    0s
H    0     0                      24.0000000    5.38462  77.6%     -    0s
H    0     0                       8.0000000    5.38462  32.7%     -    0s
     0     0    6.00000    0   14    8.00000    6.00000  25.0%     -    1s
     0     0    6.00000    0   16    8.00000    6.00000  25.0%     -    1s
H    0     0                       7.0000000    6.00000  14.3%     -    1s
     0     0    6.00000    0   16    7.00000    6.00000  14.3%     -    1s
     0     2    6.00000    0   16    7.00000    6.00000  14.3%     -    1s

Cutting planes:
  Clique: 1
  Zero half: 1

Explored 27 nodes (16385 simplex iterations) in 1.82 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%