Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:11:54 2012

Optimize a model with 3824 rows, 650 columns and 11998 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.07s
Presolved: 3822 rows, 648 columns, 19548 nonzeros
Variable types: 0 continuous, 648 integer (648 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 4.911392e+00, 2828 iterations, 0.14 seconds

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

     0     0    4.91139    0  283   25.00000    4.91139  80.4%     -    0s
H    0     0                      23.0000000    4.91139  78.6%     -    0s
     0     0    7.00000    0   39   23.00000    7.00000  69.6%     -    0s
H    0     0                      17.0000000    7.00000  58.8%     -    0s
H    0     0                      14.0000000    7.00000  50.0%     -    0s
H    0     0                       8.0000000    7.00000  12.5%     -    0s
*    0     0               0       7.0000000    7.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 2
  Zero half: 13

Explored 0 nodes (6131 simplex iterations) in 0.82 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%