Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:17 2012

Optimize a model with 614 rows, 49 columns and 1228 nonzeros
Presolve removed 421 rows and 0 columns
Presolve time: 0.01s
Presolved: 193 rows, 49 columns, 1096 nonzeros
Variable types: 0 continuous, 49 integer (49 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 8.854589e+00, 124 iterations, 0.00 seconds

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

     0     0    8.85459    0   42    5.00000    8.85459  77.1%     -    0s
H    0     0                       6.0000000    8.85459  47.6%     -    0s
     0     0    8.46092    0   45    6.00000    8.46092  41.0%     -    0s
     0     0    8.41687    0   46    6.00000    8.41687  40.3%     -    0s
     0     0    8.38811    0   48    6.00000    8.38811  39.8%     -    0s
     0     0    8.37922    0   47    6.00000    8.37922  39.7%     -    0s
     0     0    8.37014    0   48    6.00000    8.37014  39.5%     -    0s
     0     0    8.36653    0   48    6.00000    8.36653  39.4%     -    0s
H    0     0                       7.0000000    8.36653  19.5%     -    0s
     0     2    8.36533    0   48    7.00000    8.36533  19.5%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 24
  Zero half: 5

Explored 7 nodes (408 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%