Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:19 2013

Optimize a model with 228 rows, 244 columns and 882 nonzeros
Presolve removed 212 rows and 212 columns
Presolve time: 0.00s
Presolved: 16 rows, 32 columns, 82 nonzeros
Variable types: 26 continuous, 6 integer (6 binary)

Root relaxation: objective 4.810927e+03, 13 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                    4831.3249010 4810.92679  0.42%     -    0s
     0     0 4831.10652    0    2 4831.32490 4831.10652  0.00%     -    0s

Cutting planes:
  Gomory: 2
  Cover: 1
  Implied bound: 1
  Flow cover: 4

Explored 0 nodes (21 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.831324901037e+03, best bound 4.831106518157e+03, gap 0.0045%