Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:20 2013

Optimize a model with 340 rows, 1620 columns and 3610 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.01s
Presolved: 320 rows, 1590 columns, 3180 nonzeros
Variable types: 1400 continuous, 190 integer (190 binary)

Root relaxation: objective 2.162324e+04, 142 iterations, 0.00 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 21636.2508    0    4          - 21636.2508     -      -    0s
     0     0 21636.6252    0    4          - 21636.6252     -      -    0s
     0     0 21636.6252    0    4          - 21636.6252     -      -    0s
H    0     0                    21994.101780 21636.6252  1.63%     -    0s
     0     2 21662.2481    0    4 21994.1018 21662.2481  1.51%     -    0s
*   25    21              22    21823.198219 21680.2815  0.65%   4.0    0s
*   35    13               5    21760.449193 21690.4510  0.32%   4.4    0s
*   41     8               7    21759.084574 21713.2429  0.21%   4.3    0s

Cutting planes:
  Gomory: 2
  Flow cover: 3

Explored 60 nodes (476 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175908457433e+04, best bound 2.175691586971e+04, gap 0.0100%