Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:46 2013

Optimize a model with 260 rows, 1230 columns and 2750 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 240 rows, 1210 columns, 2680 nonzeros
Variable types: 1120 continuous, 90 integer (90 binary)

Root relaxation: objective 1.997658e+04, 113 iterations, 0.00 seconds

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

     0     0 19976.5790    0    2          - 19976.5790     -      -    0s
     0     0 19988.7301    0    2          - 19988.7301     -      -    0s
     0     0 20004.8402    0    2          - 20004.8402     -      -    0s
     0     0 20006.4504    0    2          - 20006.4504     -      -    0s
     0     0 20008.7406    0    2          - 20008.7406     -      -    0s
     0     0 20009.0783    0    2          - 20009.0783     -      -    0s
     0     0 20009.1945    0    2          - 20009.1945     -      -    0s
     0     0 20009.1945    0    2          - 20009.1945     -      -    0s
H    0     0                    20589.900341 20009.1945  2.82%     -    0s
     0     2 20014.9102    0    2 20589.9003 20014.9102  2.79%     -    0s
*    6     5               5    20160.594832 20074.7340  0.43%   9.7    0s
*    7     2               6    20157.611196 20074.7340  0.41%  10.3    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 16 nodes (332 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015761119649e+04, best bound 2.015761119649e+04, gap 0.0%