Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:14 2012

Optimize a model with 442 rows, 441 columns and 1914 nonzeros
Presolve removed 355 rows and 351 columns
Presolve time: 0.00s
Presolved: 87 rows, 90 columns, 556 nonzeros
Variable types: 14 continuous, 76 integer (76 binary)

Root relaxation: objective 2.644710e+02, 39 iterations, 0.00 seconds

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

     0     0  264.47098    0   18          -  264.47098     -      -    0s
H    0     0                     293.0000000  264.47098  9.74%     -    0s
     0     0  269.15154    0   15  293.00000  269.15154  8.14%     -    0s
     0     0  270.18254    0   20  293.00000  270.18254  7.79%     -    0s
     0     0  270.22942    0   22  293.00000  270.22942  7.77%     -    0s
     0     0  271.12178    0   19  293.00000  271.12178  7.47%     -    0s
     0     0  271.33333    0    9  293.00000  271.33333  7.39%     -    0s
     0     0  271.33333    0    9  293.00000  271.33333  7.39%     -    0s
     0     0  271.33333    0    9  293.00000  271.33333  7.39%     -    0s
H    0     0                     289.0000000  271.33333  6.11%     -    0s
     0     2  272.00000    0    9  289.00000  272.00000  5.88%     -    0s
*   47     8               4     288.0000000  278.77844  3.20%   6.0    0s

Cutting planes:
  Gomory: 2
  Cover: 6
  Implied bound: 4
  Clique: 3
  MIR: 5
  GUB cover: 1
  Mod-K: 2

Explored 66 nodes (499 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.880000000000e+02, best bound 2.880000000000e+02, gap 0.0%