Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:33 2013

Optimize a model with 495 rows, 20295 columns and 40545 nonzeros
Presolve time: 0.03s
Presolved: 495 rows, 20295 columns, 40545 nonzeros
Variable types: 20250 continuous, 45 integer (45 binary)

Root relaxation: objective 4.097802e+04, 629 iterations, 0.01 seconds

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

     0     0 40978.0221    0    6          - 40978.0221     -      -    0s
H    0     0                    42041.000000 40978.0221  2.53%     -    0s
     0     0 41189.6451    0    3 42041.0000 41189.6451  2.03%     -    0s
     0     0 41191.6723    0    5 42041.0000 41191.6723  2.02%     -    0s
     0     0 41192.5050    0    3 42041.0000 41192.5050  2.02%     -    0s
     0     0 41196.5069    0    4 42041.0000 41196.5069  2.01%     -    0s
     0     0 41197.3002    0    3 42041.0000 41197.3002  2.01%     -    0s
     0     0 41197.9975    0    3 42041.0000 41197.9975  2.01%     -    0s
     0     0 41198.7805    0    3 42041.0000 41198.7805  2.00%     -    0s
     0     0 41198.7805    0    3 42041.0000 41198.7805  2.00%     -    0s
     0     0 41199.0278    0    3 42041.0000 41199.0278  2.00%     -    0s
     0     0 41199.0278    0    3 42041.0000 41199.0278  2.00%     -    0s
     0     2 41222.5914    0    3 42041.0000 41222.5914  1.95%     -    0s
H    2     2                    41354.411765 41311.3043  0.10%  67.5    0s
*    3     2               3    41314.000000 41314.0000   0.0%  55.7    0s

Cutting planes:
  Implied bound: 47
  Flow cover: 10

Explored 4 nodes (983 simplex iterations) in 0.52 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.131400000000e+04, best bound 4.131400000000e+04, gap 0.0%