Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:08:51 2013

Optimize a model with 28 rows, 2046 columns and 6088 nonzeros
Presolve removed 22 rows and 26 columns
Presolve time: 0.01s
Presolved: 6 rows, 2020 columns, 4038 nonzeros
Variable types: 2020 continuous, 0 integer (0 binary)

Root relaxation: objective 4.440467e+03, 6 iterations, 0.00 seconds

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

     0     0 4440.46714    0    1          - 4440.46714     -      -    0s
     0     2 4440.46714    0    1          - 4440.46714     -      -    0s
*   21     5              11    4458.9449856 4458.94490  0.00%   1.2    0s

Explored 22 nodes (32 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.458944985629e+03, best bound 4.458944898839e+03, gap 0.0000%