Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:27 2013

Optimize a model with 4140 rows, 5020 columns and 18010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.25s
Presolved: 4110 rows, 5000 columns, 13980 nonzeros
Variable types: 3010 continuous, 1990 integer (1990 binary)

Root relaxation: objective 2.199252e+04, 1439 iterations, 0.02 seconds

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

     0     0 21992.5209    0    2          - 21992.5209     -      -    0s
     0     0 22059.8181    0    2          - 22059.8181     -      -    0s
     0     0 22073.8182    0    3          - 22073.8182     -      -    0s
     0     0 22083.7508    0    4          - 22083.7508     -      -    0s
     0     0 22088.8315    0    3          - 22088.8315     -      -    0s
     0     0 22098.4034    0    3          - 22098.4034     -      -    0s
     0     0 22100.3808    0    4          - 22100.3808     -      -    0s
     0     0 22101.5417    0    4          - 22101.5417     -      -    0s
     0     2 22101.5511    0    4          - 22101.5511     -      -    0s
H   36    36                    22135.815429 22108.5831  0.12%   9.5    1s
H   36    36                    22134.957138 22108.5831  0.12%   9.5    1s

Cutting planes:
  Gomory: 4
  Flow cover: 11

Explored 132 nodes (3225 simplex iterations) in 1.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213495713844e+04, best bound 2.213302151068e+04, gap 0.0087%