Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:37 2013

Optimize a model with 28 rows, 66 columns and 148 nonzeros
Presolve removed 22 rows and 30 columns
Presolve time: 0.00s
Presolved: 6 rows, 36 columns, 70 nonzeros
Variable types: 36 continuous, 0 integer (0 binary)

Root relaxation: objective 5.497312e+03, 5 iterations, 0.00 seconds

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

     0     0 5497.31217    0    1          - 5497.31217     -      -    0s
H    0     0                    5503.7769582 5497.31217  0.12%     -    0s
     0     2 5497.31217    0    1 5503.77696 5497.31217  0.12%     -    0s

Explored 5 nodes (7 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503776958217e+03, best bound 5.503581792463e+03, gap 0.0035%