Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:35 2012

Optimize a model with 442 rows, 441 columns and 1949 nonzeros
Presolve removed 260 rows and 254 columns
Presolve time: 0.01s
Presolved: 182 rows, 187 columns, 1537 nonzeros
Variable types: 20 continuous, 167 integer (167 binary)

Root relaxation: objective 2.513428e+02, 66 iterations, 0.00 seconds

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

     0     0  251.34277    0   32          -  251.34277     -      -    0s
     0     0  278.27485    0   41          -  278.27485     -      -    0s
     0     0  286.33381    0   40          -  286.33381     -      -    0s
     0     0  287.58800    0   37          -  287.58800     -      -    0s
     0     0  288.23099    0   37          -  288.23099     -      -    0s
     0     0  288.46667    0   36          -  288.46667     -      -    0s
     0     0  290.06277    0   38          -  290.06277     -      -    0s
     0     0  290.06277    0   38          -  290.06277     -      -    0s
     0     2  294.53247    0   38          -  294.53247     -      -    0s
*  274    76              16     361.0000000  329.74713  8.66%   6.7    0s
*  440    70               9     353.0000000  333.94737  5.40%   6.9    0s
*  497     0               8     338.0000000  338.00000   0.0%   7.0    0s

Cutting planes:
  Gomory: 2
  Cover: 26
  Implied bound: 13
  Clique: 2
  MIR: 21
  GUB cover: 1
  Zero half: 1
  Mod-K: 1

Explored 498 nodes (3632 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.380000000000e+02, best bound 3.380000000000e+02, gap 0.0%