Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:39:44 2013

Optimize a model with 340 rows, 21600 columns and 262210 nonzeros
Presolve removed 10 rows and 490 columns
Presolve time: 0.69s
Presolved: 330 rows, 21110 columns, 242210 nonzeros
Variable types: 21010 continuous, 100 integer (100 binary)

Root relaxation: objective 2.162324e+04, 196 iterations, 0.01 seconds

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

     0     0 21623.2446    0   16          - 21623.2446     -      -    0s
     0     0 21623.3678    0   16          - 21623.3678     -      -    1s
     0     0 21650.6284    0   22          - 21650.6284     -      -    1s
     0     0 21650.6284    0   22          - 21650.6284     -      -    1s
H    0     0                    21888.046129 21650.6284  1.08%     -    1s
     0     0 21741.4430    0   21 21888.0461 21741.4430  0.67%     -    2s
     0     0 21741.5036    0   21 21888.0461 21741.5036  0.67%     -    3s
     0     0 21741.5036    0   21 21888.0461 21741.5036  0.67%     -    3s
     0     2 21741.5036    0   21 21888.0461 21741.5036  0.67%     -    3s
*   16    12              14    21759.997423 21747.0135  0.06%  16.1    3s
*   21    13              18    21759.990415 21747.0135  0.06%  12.5    3s
*   46    11              13    21759.557450 21750.9479  0.04%   7.6    3s

Cutting planes:
  Flow cover: 3

Explored 70 nodes (1584 simplex iterations) in 3.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175955745048e+04, best bound 2.175882124348e+04, gap 0.0034%