Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:12 2013

Optimize a model with 28 rows, 86 columns and 208 nonzeros
Presolve removed 22 rows and 24 columns
Presolve time: 0.00s
Presolved: 6 rows, 62 columns, 122 nonzeros
Variable types: 62 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                    4831.0178459 4810.92679  0.42%     -    0s
     0     2 4810.92679    0    2 4831.01785 4810.92679  0.42%     -    0s

Explored 13 nodes (14 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.831017845887e+03, best bound 4.830742861159e+03, gap 0.0057%