Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:08:53 2013

Optimize a model with 28 rows, 2046 columns and 6088 nonzeros
Presolve removed 22 rows and 24 columns
Presolve time: 0.01s
Presolved: 6 rows, 2022 columns, 4042 nonzeros
Variable types: 2022 continuous, 0 integer (0 binary)

Root relaxation: objective 3.881594e+03, 7 iterations, 0.00 seconds

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

     0     0 3881.59364    0    1          - 3881.59364     -      -    0s
     0     2 3881.59364    0    1          - 3881.59364     -      -    0s
*   22     6              11    3893.9001900 3893.90019   0.0%   1.3    0s

Explored 23 nodes (36 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.893900189954e+03, best bound 3.893900189954e+03, gap 0.0%