Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:29:16 2013

Optimize a model with 10140 rows, 11020 columns and 42010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.22s
Presolved: 10110 rows, 11000 columns, 31980 nonzeros
Variable types: 6010 continuous, 4990 integer (4990 binary)

Root relaxation: objective 2.162324e+04, 3581 iterations, 0.10 seconds

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

     0     0 21623.2446    0    2          - 21623.2446     -      -    0s
     0     0 21664.2470    0    5          - 21664.2470     -      -    0s
     0     0 21681.2868    0    3          - 21681.2868     -      -    0s
     0     0 21683.4717    0    4          - 21683.4717     -      -    0s
     0     0 21686.8173    0    3          - 21686.8173     -      -    0s
     0     0 21686.8173    0    3          - 21686.8173     -      -    0s
H    0     0                    21764.555280 21686.8173  0.36%     -    1s
     0     0 21686.8173    0    2 21764.5553 21686.8173  0.36%     -    1s
     0     0 21686.8173    0    5 21764.5553 21686.8173  0.36%     -    1s
     0     0 21686.8173    0    4 21764.5553 21686.8173  0.36%     -    1s
     0     0 21686.8174    0    4 21764.5553 21686.8174  0.36%     -    1s
     0     0 21686.8174    0    4 21764.5553 21686.8174  0.36%     -    1s
     0     0 21686.8227    0    5 21764.5553 21686.8227  0.36%     -    1s
     0     2 21687.3516    0    5 21764.5553 21687.3516  0.35%     -    1s
H  738   484                    21764.552693 21733.2204  0.14%  15.4    4s
*  741   460              93    21764.403982 21733.2204  0.14%  15.5    4s
*  742   437              94    21764.344610 21733.2204  0.14%  15.5    4s
   814   434 21733.6400   67    3 21764.3446 21733.5184  0.14%  18.3    5s
* 1135   423             116    21762.057182 21754.5448  0.03%  23.2    5s
* 1201   400             106    21761.439116 21754.5652  0.03%  22.1    5s
H 1536   262                    21760.493223 21754.7175  0.03%  18.1    6s
H 1806   201                    21759.490948 21754.7955  0.02%  16.0    6s
* 2094   206              90    21759.259695 21754.8780  0.02%  14.6    6s

Cutting planes:
  Gomory: 4
  Flow cover: 6

Explored 3942 nodes (46260 simplex iterations) in 7.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175925969521e+04, best bound 2.175715109948e+04, gap 0.0097%