Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:08:51 2013

Optimize a model with 24549 rows, 24059 columns and 96089 nonzeros
Presolve removed 2166 rows and 0 columns
Presolve time: 0.14s
Presolved: 22383 rows, 24059 columns, 91757 nonzeros
Variable types: 24010 continuous, 49 integer (49 binary)

Root relaxation: objective 4.768554e+04, 3697 iterations, 0.38 seconds

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

     0     0 47685.5396    0    8          - 47685.5396     -      -    0s
H    0     0                    48909.000000 47685.5396  2.50%     -    0s
H    0     0                    48025.000000 47685.5396  0.71%     -    0s
     0     0 47697.5605    0   11 48025.0000 47697.5605  0.68%     -    0s
     0     0 47697.6217    0   11 48025.0000 47697.6217  0.68%     -    1s
     0     0 47703.6564    0    7 48025.0000 47703.6564  0.67%     -    1s
     0     0 47703.6564    0    6 48025.0000 47703.6564  0.67%     -    2s
     0     0 47708.7358    0    7 48025.0000 47708.7358  0.66%     -    2s
     0     0 47708.7358    0    7 48025.0000 47708.7358  0.66%     -    2s
     0     2 47740.4503    0    7 48025.0000 47740.4503  0.59%     -    3s

Cutting planes:
  Gomory: 3
  Flow cover: 4

Explored 35 nodes (8026 simplex iterations) in 3.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.802500000000e+04, best bound 4.802500000000e+04, gap 0.0%