Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:11:28 2012

Optimize a model with 570 rows, 540 columns and 1791 nonzeros
Presolve removed 21 rows and 13 columns
Presolve time: 0.01s
Presolved: 549 rows, 527 columns, 1739 nonzeros
Variable types: 352 continuous, 175 integer (175 binary)

Root relaxation: objective 4.945731e+04, 266 iterations, 0.00 seconds

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

     0     0 49457.3129    0   83          - 49457.3129     -      -    0s
H    0     0                    79541.000000 49457.3129  37.8%     -    0s
     0     0 58124.3963    0   38 79541.0000 58124.3963  26.9%     -    0s
     0     0 58479.6395    0    8 79541.0000 58479.6395  26.5%     -    0s
     0     0 58549.5324    0    5 79541.0000 58549.5324  26.4%     -    0s
     0     0 58550.8540    0    8 79541.0000 58550.8540  26.4%     -    0s
H    0     0                    59055.000000 58550.8540  0.85%     -    0s
     0     2 58558.1122    0    8 59055.0000 58558.1122  0.84%     -    0s
H    4     4                    58942.000000 58572.6616  0.63%   3.5    0s
*    8     4               5    58832.000000 58572.6616  0.44%   2.2    0s
*   11     3               4    58755.000000 58572.6616  0.31%   1.9    0s
*   17     4               5    58754.000000 58585.2202  0.29%   1.9    0s
H   27     2                    58713.000000 58624.4407  0.15%   2.3    0s

Cutting planes:
  Gomory: 13
  Cover: 2
  Flow cover: 57
  Flow path: 36

Explored 33 nodes (482 simplex iterations) in 0.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.871300000000e+04, best bound 5.871300000000e+04, gap 0.0%