Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:00:30 2013

Optimize a model with 462 rows, 17682 columns and 35322 nonzeros
Presolve time: 0.02s
Presolved: 462 rows, 17682 columns, 35322 nonzeros
Variable types: 17640 continuous, 42 integer (42 binary)

Root relaxation: objective 4.195358e+04, 786 iterations, 0.02 seconds

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

     0     0 41953.5779    0    5          - 41953.5779     -      -    0s
H    0     0                    43293.000000 41953.5779  3.09%     -    0s
H    0     0                    42239.000000 41953.5779  0.68%     -    0s
     0     0 42185.0323    0    2 42239.0000 42185.0323  0.13%     -    0s
     0     0 42198.1204    0    2 42239.0000 42198.1204  0.10%     -    0s
     0     0 42199.6000    0    2 42239.0000 42199.6000  0.09%     -    0s
     0     0 42199.6000    0    5 42239.0000 42199.6000  0.09%     -    0s
     0     0 42199.6000    0    2 42239.0000 42199.6000  0.09%     -    0s
     0     0 42199.6000    0    2 42239.0000 42199.6000  0.09%     -    0s
     0     0 42199.6000    0    2 42239.0000 42199.6000  0.09%     -    0s
     0     0 42199.6000    0    2 42239.0000 42199.6000  0.09%     -    0s
     0     0 42237.2581    0    1 42239.0000 42237.2581  0.00%     -    0s

Cutting planes:
  Implied bound: 25
  Flow cover: 3

Explored 0 nodes (1661 simplex iterations) in 0.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.223900000000e+04, best bound 4.223725806452e+04, gap 0.0041%