Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:11:14 2013

Optimize a model with 25600 rows, 25100 columns and 100100 nonzeros
Presolve removed 50 rows and 0 columns
Presolve time: 0.11s
Presolved: 25550 rows, 25100 columns, 100050 nonzeros
Variable types: 25050 continuous, 50 integer (50 binary)

Root relaxation: objective 4.176022e+04, 3622 iterations, 0.97 seconds

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

     0     0 41760.2219    0   38          - 41760.2219     -      -    1s
H    0     0                    53335.000000 41760.2219  21.7%     -    1s
     0     0 47043.6535    0    5 53335.0000 47043.6535  11.8%     -    2s
H    0     0                    49645.548456 47043.6535  5.24%     -    2s
H    0     0                    49302.000000 47043.6535  4.58%     -    2s
H    0     0                    49249.000000 47043.6535  4.48%     -    2s
     0     0 47073.7304    0    4 49249.0000 47073.7304  4.42%     -    3s
H    0     0                    47665.281830 47073.7304  1.24%     -    3s
H    0     0                    47241.000000 47073.7304  0.35%     -    3s
     0     0 47074.2698    0    2 47241.0000 47074.2698  0.35%     -    3s
     0     0 47076.0712    0    2 47241.0000 47076.0712  0.35%     -    3s
     0     2 47076.2544    0    2 47241.0000 47076.2544  0.35%     -    3s
H    3     1                    47184.111111 47092.9053  0.19%  72.3    3s
*    4     2               3    47107.000000 47092.9053  0.03%  66.8    3s

Cutting planes:
  Gomory: 1
  Implied bound: 40

Explored 7 nodes (5696 simplex iterations) in 3.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.710700000000e+04, best bound 4.710700000000e+04, gap 0.0%