Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:08:58 2013

Optimize a model with 24549 rows, 24059 columns and 96089 nonzeros
Presolve removed 702 rows and 0 columns
Presolve time: 0.13s
Presolved: 23847 rows, 24059 columns, 94685 nonzeros
Variable types: 24010 continuous, 49 integer (49 binary)

Root relaxation: objective 5.408826e+04, 4114 iterations, 0.40 seconds

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

     0     0 54088.2571    0    4          - 54088.2571     -      -    0s
H    0     0                    55023.000000 54088.2571  1.70%     -    0s
     0     0 54088.5237    0    5 55023.0000 54088.5237  1.70%     -    0s
     0     0 54088.6776    0    5 55023.0000 54088.6776  1.70%     -    0s
     0     2 54093.6712    0    5 55023.0000 54093.6712  1.69%     -    1s
H    4     4                    54448.142857 54135.9185  0.57%  47.0    1s
*    5     3               5    54155.000000 54135.9185  0.04%  60.0    1s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 8 nodes (4445 simplex iterations) in 1.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.415500000000e+04, best bound 5.415500000000e+04, gap 0.0%