Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:09 2013

Optimize a model with 2140 rows, 7020 columns and 18010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.18s
Presolved: 2120 rows, 6990 columns, 13980 nonzeros
Variable types: 5000 continuous, 1990 integer (1990 binary)

Root relaxation: objective 2.162324e+04, 172 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 21624.6230    0    4          - 21624.6230     -      -    0s
     0     0 21624.6873    0    4          - 21624.6873     -      -    0s
     0     0 21624.6873    0    4          - 21624.6873     -      -    0s
     0     2 21625.1367    0    4          - 21625.1367     -      -    0s
*  188    89             184    21925.967259 21652.3859  1.25%   2.5    1s
H  271   158                    21923.386344 21665.9182  1.17%   2.4    1s
H  298   106                    21897.760669 21665.9182  1.06%   2.3    1s
H  325   103                    21859.431748 21666.0499  0.88%   2.3    1s
*  799   263             113    21854.093374 21681.6389  0.79%   4.1    3s
H  892   216                    21782.735342 21690.5708  0.42%   4.2    3s
* 1209   247              61    21776.645658 21702.9080  0.34%   3.6    3s
* 1214   244              60    21775.940039 21702.9080  0.34%   3.6    3s
* 1216   242              60    21775.553774 21702.9080  0.33%   3.6    3s
* 1257   276              60    21774.386755 21703.3129  0.33%   3.5    3s
* 1259   271              59    21773.581151 21703.3129  0.32%   3.5    3s
* 1260   268              58    21772.773074 21703.3129  0.32%   3.5    3s
* 1279   228              32    21766.566177 21703.7097  0.29%   3.5    3s
* 1326   202              76    21762.887693 21703.7097  0.27%   3.4    3s
H 1389   235                    21762.359842 21704.4784  0.27%   3.3    4s
* 1414   253              47    21761.909717 21704.4784  0.26%   3.3    4s
* 1512   268              49    21761.027992 21705.1876  0.26%   3.2    4s
* 1550   277              49    21760.574357 21706.3101  0.25%   3.2    4s
* 1882   407              54    21759.954038 21713.8021  0.21%   2.9    4s
* 2110   497              53    21759.737784 21723.2392  0.17%   2.8    4s
* 2291   518              68    21759.226321 21734.5668  0.11%   2.7    4s
  2333   496     cutoff   28      21759.2263 21734.9528  0.11%   2.7    5s
* 2402   482              80    21759.206022 21735.1952  0.11%   2.7    5s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 5494 nodes (13411 simplex iterations) in 7.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175920602203e+04, best bound 2.175705022859e+04, gap 0.0099%