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

Optimize a model with 614 rows, 50 columns and 1228 nonzeros
Presolve removed 419 rows and 0 columns
Presolve time: 0.01s
Presolved: 195 rows, 50 columns, 1089 nonzeros
Variable types: 0 continuous, 50 integer (50 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 8.948624e+00, 115 iterations, 0.00 seconds

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

     0     0    8.94862    0   44    6.00000    8.94862  49.1%     -    0s
H    0     0                       7.0000000    8.94862  27.8%     -    0s
     0     0    8.63850    0   47    7.00000    8.63850  23.4%     -    0s
     0     0    8.57472    0   44    7.00000    8.57472  22.5%     -    0s
     0     0    8.55371    0   46    7.00000    8.55371  22.2%     -    0s
     0     0    8.51910    0   48    7.00000    8.51910  21.7%     -    0s
     0     0    8.51469    0   47    7.00000    8.51469  21.6%     -    0s
     0     0    8.51116    0   48    7.00000    8.51116  21.6%     -    0s
     0     2    8.50944    0   48    7.00000    8.50944  21.6%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 16
  Zero half: 10

Explored 9 nodes (435 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%