Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:32 2013

Optimize a model with 1280 rows, 7040 columns and 16020 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.14s
Presolved: 1240 rows, 6980 columns, 13960 nonzeros
Variable types: 6000 continuous, 980 integer (980 binary)

Root relaxation: objective 4.013975e+04, 418 iterations, 0.02 seconds

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

     0     0 40139.7487    0    2          - 40139.7487     -      -    0s
     0     0 40140.7093    0    3          - 40140.7093     -      -    0s
     0     0 40140.9026    0    4          - 40140.9026     -      -    0s
     0     0 40141.1475    0    4          - 40141.1475     -      -    0s
     0     0 40141.1475    0    4          - 40141.1475     -      -    0s
H    0     0                    40205.095112 40141.1475  0.16%     -    0s
     0     2 40142.1722    0    4 40205.0951 40142.1722  0.16%     -    0s
*   12    11               9    40203.415791 40159.8901  0.11%   4.6    0s
H   27    18                    40199.632944 40165.1802  0.09%   3.8    0s
*   74    21               9    40197.433596 40176.0588  0.05%   3.1    0s
*  105    17               9    40195.162722 40184.1153  0.03%   2.9    0s

Cutting planes:
  Gomory: 2
  Flow cover: 5

Explored 141 nodes (1236 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019516272202e+04, best bound 4.019121778733e+04, gap 0.0098%