Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:26:28 2012

Optimize a model with 482 rows, 441 columns and 2797 nonzeros
Presolve removed 49 rows and 73 columns
Presolve time: 0.02s
Presolved: 433 rows, 368 columns, 3856 nonzeros
Variable types: 20 continuous, 348 integer (348 binary)

Root relaxation: objective 1.793949e+02, 113 iterations, 0.00 seconds

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

     0     0  179.39495    0   29          -  179.39495     -      -    0s
     0     0  195.00000    0   28          -  195.00000     -      -    0s
     0     0  195.00000    0   28          -  195.00000     -      -    0s
     0     0  195.00000    0   28          -  195.00000     -      -    0s
     0     0  195.00000    0   28          -  195.00000     -      -    0s
H    0     0                     275.0000000  195.00000  29.1%     -    0s
     0     2  195.00000    0   28  275.00000  195.00000  29.1%     -    0s
H   27    26                     273.0000000  202.52583  25.8%  12.0    0s
H  108    88                     272.0000000  209.76056  22.9%   8.7    0s
H  189   149                     269.0000000  211.20769  21.5%   8.1    0s
H  216   162                     268.0000000  220.59088  17.7%   7.9    0s
H  243   134                     257.0000000  220.59088  14.2%   8.0    0s
H  333   177                     255.0000000  227.19456  10.9%   8.3    0s
 10251  2575     cutoff   38       255.00000  237.98649  6.67%   9.2    5s
 22326  2302  252.25600   33   12  255.00000  243.27731  4.60%   9.6   10s

Cutting planes:
  Cover: 1
  MIR: 1
  GUB cover: 3

Explored 29654 nodes (279018 simplex iterations) in 12.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.550000000000e+02, best bound 2.550000000000e+02, gap 0.0%