Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:27 2013

Optimize a model with 28 rows, 56 columns and 118 nonzeros
Presolve removed 22 rows and 24 columns
Presolve time: 0.00s
Presolved: 6 rows, 32 columns, 62 nonzeros
Variable types: 32 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
H    0     0                    4830.1446327 4810.92679  0.40%     -    0s
     0     2 4810.92679    0    2 4830.14463 4810.92679  0.40%     -    0s

Explored 9 nodes (12 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.830144632685e+03, best bound 4.830144632685e+03, gap 0.0%