Gurobi 5.0.1 (linux64) logging started Tue Dec 11 04:09:22 2012

Optimize a model with 11910 rows, 11880 columns and 45295 nonzeros
Presolve removed 655 rows and 123 columns
Presolve time: 0.07s
Presolved: 11255 rows, 11757 columns, 43902 nonzeros
Variable types: 11055 continuous, 702 integer (702 binary)

Root relaxation: objective 2.319194e+05, 1117 iterations, 0.02 seconds

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

     0     0 231919.412    0   21          - 231919.412     -      -    0s
H    0     0                    235021.00000 231919.412  1.32%     -    0s
H    0     0                    232848.00000 231919.412  0.40%     -    0s
     0     0 231957.688    0   37 232848.000 231957.688  0.38%     -    0s
     0     0 231996.691    0   44 232848.000 231996.691  0.37%     -    0s
     0     0 232014.731    0   46 232848.000 232014.731  0.36%     -    0s
     0     0 232024.300    0   53 232848.000 232024.300  0.35%     -    0s
     0     0 232033.649    0   51 232848.000 232033.649  0.35%     -    0s
     0     0 232037.415    0   54 232848.000 232037.415  0.35%     -    0s
     0     0 232039.319    0   56 232848.000 232039.319  0.35%     -    0s
H    0     0                    232744.00000 232039.319  0.30%     -    0s
     0     2 232054.423    0   56 232744.000 232054.423  0.30%     -    0s
H   27    25                    232357.00000 232088.471  0.12%   5.1    0s

Cutting planes:
  Gomory: 3
  Cover: 16
  Flow cover: 27
  Zero half: 1

Explored 1164 nodes (8202 simplex iterations) in 3.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.323570000000e+05, best bound 2.323341792638e+05, gap 0.0098%