Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:18 2012

Optimize a model with 634 rows, 50 columns and 1268 nonzeros
Presolve removed 442 rows and 0 columns
Presolve time: 0.01s
Presolved: 192 rows, 50 columns, 1069 nonzeros
Variable types: 0 continuous, 50 integer (50 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 8.800045e+00, 114 iterations, 0.00 seconds

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

     0     0    8.80005    0   46    6.00000    8.80005  46.7%     -    0s
H    0     0                       7.0000000    8.80005  25.7%     -    0s
     0     0    8.47475    0   47    7.00000    8.47475  21.1%     -    0s
     0     0    8.44382    0   48    7.00000    8.44382  20.6%     -    0s
     0     0    8.43304    0   48    7.00000    8.43304  20.5%     -    0s
     0     0    8.42949    0   46    7.00000    8.42949  20.4%     -    0s
     0     0    8.41619    0   48    7.00000    8.41619  20.2%     -    0s
     0     0    8.41310    0   49    7.00000    8.41310  20.2%     -    0s
     0     2    8.41232    0   49    7.00000    8.41232  20.2%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 11
  Zero half: 8

Explored 9 nodes (505 simplex iterations) in 0.07 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%