Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:34:06 2012

Optimize a model with 1682 rows, 1681 columns and 7576 nonzeros
Presolve removed 1178 rows and 679 columns
Presolve time: 0.03s
Presolved: 504 rows, 1002 columns, 6198 nonzeros
Variable types: 40 continuous, 962 integer (962 binary)

Root relaxation: objective 2.626930e+02, 162 iterations, 0.00 seconds

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

     0     0  262.69304    0   57          -  262.69304     -      -    0s
     0     0  301.26247    0   82          -  301.26247     -      -    0s
     0     0  304.60995    0   72          -  304.60995     -      -    0s
     0     0  305.29416    0   58          -  305.29416     -      -    0s
     0     0  305.29416    0   61          -  305.29416     -      -    0s
     0     0  305.29416    0   55          -  305.29416     -      -    0s
     0     2  305.44253    0   54          -  305.44253     -      -    0s
*  573   350              39     352.0000000  308.33451  12.4%  11.8    0s
H  700   406                     351.0000000  308.81946  12.0%  11.7    0s
H  703   387                     345.0000000  308.81946  10.5%  11.6    1s
H  714   375                     341.0000000  312.26517  8.43%  11.5    1s
H  745   363                     340.0000000  312.70704  8.03%  13.5    2s
*  783   352              32     334.0000000  314.27165  5.91%  13.9    2s
*  787   325              33     331.0000000  314.27165  5.05%  13.8    2s
H  847   265                     328.0000000  321.48470  1.99%  14.8    2s

Cutting planes:
  Gomory: 58
  Cover: 25
  Implied bound: 25
  Clique: 4
  MIR: 84
  GUB cover: 3
  Zero half: 45

Explored 854 nodes (13179 simplex iterations) in 2.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.280000000000e+02, best bound 3.280000000000e+02, gap 0.0%