Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:50 2013

Optimize a model with 28 rows, 446 columns and 1288 nonzeros
Presolve removed 22 rows and 24 columns
Presolve time: 0.00s
Presolved: 6 rows, 422 columns, 842 nonzeros
Variable types: 422 continuous, 0 integer (0 binary)

Root relaxation: objective 4.810927e+03, 8 iterations, 0.00 seconds

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

     0     0 4810.92679    0    2          - 4810.92679     -      -    0s
     0     2 4810.92679    0    2          - 4810.92679     -      -    0s
*   29     3              15    4831.3317165 4831.11968  0.00%   1.4    0s

Explored 30 nodes (50 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.831331716518e+03, best bound 4.831119676065e+03, gap 0.0044%