Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:26 2012

Optimize a model with 813 rows, 58 columns and 1626 nonzeros
Presolve removed 575 rows and 0 columns
Presolve time: 0.01s
Presolved: 238 rows, 58 columns, 1378 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.036462e+01, 133 iterations, 0.00 seconds

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

     0     0   10.36462    0   51    6.00000   10.36462  72.7%     -    0s
H    0     0                       7.0000000   10.36462  48.1%     -    0s
     0     0    9.94786    0   56    7.00000    9.94786  42.1%     -    0s
     0     0    9.89507    0   54    7.00000    9.89507  41.4%     -    0s
     0     0    9.83557    0   57    7.00000    9.83557  40.5%     -    0s
     0     0    9.82225    0   54    7.00000    9.82225  40.3%     -    0s
H    0     0                       8.0000000    9.82225  22.8%     -    0s
     0     0    9.81068    0   54    8.00000    9.81068  22.6%     -    0s
     0     0    9.77804    0   56    8.00000    9.77804  22.2%     -    0s
     0     0    9.75865    0   56    8.00000    9.75865  22.0%     -    0s
     0     0    9.75822    0   56    8.00000    9.75822  22.0%     -    0s
     0     2    9.75672    0   56    8.00000    9.75672  22.0%     -    0s

Cutting planes:
  Clique: 23
  Zero half: 7

Explored 9 nodes (649 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%