Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:10 2013

Optimize a model with 280 rows, 2100 columns and 11250 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.01s
Presolved: 270 rows, 2090 columns, 10240 nonzeros
Variable types: 2020 continuous, 70 integer (70 binary)

Root relaxation: objective 1.937272e+04, 114 iterations, 0.01 seconds

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

     0     0 19372.7157    0    6          - 19372.7157     -      -    0s
     0     0 19373.7670    0    8          - 19373.7670     -      -    0s
     0     0 19445.1962    0    7          - 19445.1962     -      -    0s
     0     0 19445.1962    0    7          - 19445.1962     -      -    0s
H    0     0                    20108.801989 19445.1962  3.30%     -    0s
     0     2 19445.1962    0    7 20108.8020 19445.1962  3.30%     -    0s
*   14     9              11    19529.071139 19504.7042  0.12%   8.7    0s
H   27     6                    19513.949561 19511.7016  0.01%   5.9    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 35 nodes (470 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.951394956123e+04, best bound 1.951232039607e+04, gap 0.0083%