Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:23 2013

Optimize a model with 28 rows, 146 columns and 388 nonzeros
Presolve removed 22 rows and 26 columns
Presolve time: 0.00s
Presolved: 6 rows, 120 columns, 238 nonzeros
Variable types: 120 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
*   13     3               7    4458.9368320 4458.90304  0.00%   1.0    0s

Explored 14 nodes (19 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.458936831960e+03, best bound 4.458903044541e+03, gap 0.0008%