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

Optimize a model with 18963 rows, 18533 columns and 74003 nonzeros
Presolve removed 1425 rows and 0 columns
Presolve time: 0.10s
Presolved: 17538 rows, 18533 columns, 71153 nonzeros
Variable types: 18490 continuous, 43 integer (43 binary)

Root relaxation: objective 4.967853e+04, 3111 iterations, 0.24 seconds

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

     0     0 49678.5282    0    2          - 49678.5282     -      -    0s
H    0     0                    49929.000000 49678.5282  0.50%     -    0s
     0     0 49678.7995    0    3 49929.0000 49678.7995  0.50%     -    0s
     0     0 49678.7995    0    3 49929.0000 49678.7995  0.50%     -    0s
     0     2 49683.7908    0    3 49929.0000 49683.7908  0.49%     -    1s
H    3     2                    49890.000000 49799.0294  0.18%  84.0    1s
H    4     2                    49863.000000 49799.0294  0.13%  67.2    1s
*    5     2               5    49854.000000 49799.0294  0.11%  57.0    1s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 8 nodes (3439 simplex iterations) in 1.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.985400000000e+04, best bound 4.985400000000e+04, gap 0.0%