Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:42:01 2013

Optimize a model with 520 rows, 5180 columns and 16440 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.02s
Presolved: 500 rows, 5160 columns, 15420 nonzeros
Variable types: 5040 continuous, 120 integer (120 binary)

Root relaxation: objective 4.013975e+04, 502 iterations, 0.01 seconds

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

     0     0 40139.7487    0    6          - 40139.7487     -      -    0s
H    0     0                    40493.638405 40139.7487  0.87%     -    0s
H    0     0                    40205.095112 40139.7487  0.16%     -    0s
     0     0 40139.7487    0    6 40205.0951 40139.7487  0.16%     -    0s
     0     0 40139.7487    0    6 40205.0951 40139.7487  0.16%     -    0s
     0     0 40139.9692    0    6 40205.0951 40139.9692  0.16%     -    0s
     0     0 40147.6820    0    6 40205.0951 40147.6820  0.14%     -    0s
     0     0 40160.3474    0    3 40205.0951 40160.3474  0.11%     -    0s
     0     0 40171.2828    0    3 40205.0951 40171.2828  0.08%     -    0s
     0     0 40189.6054    0    6 40205.0951 40189.6054  0.04%     -    0s
     0     0 40194.1618    0    5 40205.0951 40194.1618  0.03%     -    0s
     0     0 40194.1911    0    2 40205.0951 40194.1911  0.03%     -    0s
     0     0 40194.1911    0    2 40205.0951 40194.1911  0.03%     -    0s
     0     2 40194.1911    0    2 40205.0951 40194.1911  0.03%     -    0s
*    3     2               3    40195.162722 40194.1911  0.00%  23.7    0s

Cutting planes:
  Flow cover: 2

Explored 4 nodes (1349 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019516272202e+04, best bound 4.019419109853e+04, gap 0.0024%