Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:41 2013

Optimize a model with 16440 rows, 16040 columns and 64040 nonzeros
Presolve removed 1452 rows and 0 columns
Presolve time: 0.09s
Presolved: 14988 rows, 16040 columns, 61136 nonzeros
Variable types: 16000 continuous, 40 integer (40 binary)

Root relaxation: objective 4.282419e+04, 2269 iterations, 0.14 seconds

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

     0     0 42824.1901    0    2          - 42824.1901     -      -    0s
H    0     0                    43367.000000 42824.1901  1.25%     -    0s
H    0     0                    42860.000000 42824.1901  0.08%     -    0s
     0     0 42825.0689    0    3 42860.0000 42825.0689  0.08%     -    0s
     0     0 42825.0689    0    2 42860.0000 42825.0689  0.08%     -    0s
     0     0 42825.0689    0    3 42860.0000 42825.0689  0.08%     -    0s
     0     0 42825.0689    0    3 42860.0000 42825.0689  0.08%     -    0s
     0     0 42825.1137    0    2 42860.0000 42825.1137  0.08%     -    0s
     0     0 42825.5541    0    3 42860.0000 42825.5541  0.08%     -    0s
     0     0     cutoff    0      42860.0000 42860.0000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 0 nodes (2982 simplex iterations) in 0.73 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.286000000000e+04, best bound 4.286000000000e+04, gap 0.0%