Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:11 2012

Optimize a model with 442 rows, 441 columns and 1923 nonzeros
Presolve removed 296 rows and 182 columns
Presolve time: 0.00s
Presolved: 146 rows, 259 columns, 1099 nonzeros
Variable types: 20 continuous, 239 integer (239 binary)

Root relaxation: objective 2.179250e+02, 72 iterations, 0.00 seconds

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

     0     0  217.92496    0   27          -  217.92496     -      -    0s
     0     0  229.57240    0   36          -  229.57240     -      -    0s
     0     0  232.83333    0   25          -  232.83333     -      -    0s
     0     0  233.19048    0   41          -  233.19048     -      -    0s
     0     0  233.83333    0   27          -  233.83333     -      -    0s
     0     0  233.83333    0   27          -  233.83333     -      -    0s
     0     0  235.50000    0   14          -  235.50000     -      -    0s
     0     0  235.50000    0   12          -  235.50000     -      -    0s
     0     2  235.50000    0   12          -  235.50000     -      -    0s
*  254    45              13     265.0000000  253.00000  4.53%   5.4    0s
*  281     0               8     254.0000000  254.00000   0.0%   5.2    0s

Cutting planes:
  Learned: 1
  Gomory: 1
  Cover: 18
  Implied bound: 9
  Clique: 3
  MIR: 4
  GUB cover: 2
  Zero half: 1

Explored 282 nodes (1638 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.540000000000e+02, best bound 2.540000000000e+02, gap 0.0%