Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:12:08 2012

Optimize a model with 3824 rows, 650 columns and 11998 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3847 rows, 648 columns, 20173 nonzeros
Variable types: 0 continuous, 648 integer (648 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 4.911392e+00, 3714 iterations, 0.29 seconds

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

     0     0    4.91139    0  246   25.00000    4.91139  80.4%     -    0s
     0     0    7.00000    0   51   25.00000    7.00000  72.0%     -    0s
H    0     0                      23.0000000    7.00000  69.6%     -    0s
H    0     0                       9.0000000    7.00000  22.2%     -    0s
H    0     0                       7.0000000    7.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 13
  Zero half: 1

Explored 0 nodes (7028 simplex iterations) in 0.92 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%