Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:09 2013

Optimize a model with 539 rows, 24059 columns and 48069 nonzeros
Presolve time: 0.03s
Presolved: 539 rows, 24059 columns, 48069 nonzeros
Variable types: 24010 continuous, 49 integer (49 binary)

Root relaxation: objective 4.731309e+04, 714 iterations, 0.01 seconds

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

     0     0 47313.0946    0    8          - 47313.0946     -      -    0s
H    0     0                    48909.000000 47313.0946  3.26%     -    0s
H    0     0                    48476.000000 47313.0946  2.40%     -    0s
     0     0 47603.0295    0    9 48476.0000 47603.0295  1.80%     -    0s
     0     0 47666.6258    0    8 48476.0000 47666.6258  1.67%     -    0s
     0     0 47683.8447    0    8 48476.0000 47683.8447  1.63%     -    0s
     0     0 47685.6662    0    8 48476.0000 47685.6662  1.63%     -    0s
     0     0 47686.8969    0    8 48476.0000 47686.8969  1.63%     -    0s
H    0     0                    48025.000000 47686.8969  0.70%     -    0s
     0     0 47686.8969    0    8 48025.0000 47686.8969  0.70%     -    0s
     0     0 47686.8969    0    9 48025.0000 47686.8969  0.70%     -    0s
     0     0 47686.8969    0    7 48025.0000 47686.8969  0.70%     -    0s
     0     0 47687.7826    0    8 48025.0000 47687.7826  0.70%     -    0s
     0     0 47687.9435    0    7 48025.0000 47687.9435  0.70%     -    0s
     0     2 47708.8141    0    7 48025.0000 47708.8141  0.66%     -    0s

Cutting planes:
  Implied bound: 137
  Flow cover: 6

Explored 41 nodes (3427 simplex iterations) in 1.13 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%