Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:39 2012

Optimize a model with 1932 rows, 88 columns and 3864 nonzeros
Presolve removed 1378 rows and 0 columns
Presolve time: 0.05s
Presolved: 554 rows, 88 columns, 3679 nonzeros
Variable types: 0 continuous, 88 integer (88 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.294946e+01, 265 iterations, 0.01 seconds

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

     0     0   12.94946    0   81    6.00000   12.94946   116%     -    0s
H    0     0                       7.0000000   12.94946  85.0%     -    0s
     0     0   12.53555    0   86    7.00000   12.53555  79.1%     -    0s
     0     0   12.50284    0   87    7.00000   12.50284  78.6%     -    0s
H    0     0                       8.0000000   12.50284  56.3%     -    0s
     0     0   12.48703    0   87    8.00000   12.48703  56.1%     -    0s
     0     0   12.47803    0   87    8.00000   12.47803  56.0%     -    0s
     0     0   12.47116    0   87    8.00000   12.47116  55.9%     -    0s
     0     0   12.47010    0   87    8.00000   12.47010  55.9%     -    0s
     0     0   12.46961    0   87    8.00000   12.46961  55.9%     -    0s
     0     2   12.46952    0   87    8.00000   12.46952  55.9%     -    0s
*   45    19               5       9.0000000   12.14899  35.0%  50.0    0s

Cutting planes:
  Clique: 53
  Zero half: 4

Explored 71 nodes (4744 simplex iterations) in 0.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%