Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:26 2013

Optimize a model with 1028 rows, 3044 columns and 8082 nonzeros
Presolve removed 952 rows and 2821 columns
Presolve time: 0.09s
Presolved: 76 rows, 223 columns, 446 nonzeros
Variable types: 153 continuous, 70 integer (70 binary)

Root relaxation: objective 5.420106e+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 5420.10604    0    1          - 5420.10604     -      -    0s
     0     0 5441.56677    0    2          - 5441.56677     -      -    0s
     0     0 5441.56688    0    2          - 5441.56688     -      -    0s
     0     0 5441.57849    0    2          - 5441.57849     -      -    0s
     0     0 5441.59017    0    2          - 5441.59017     -      -    0s
     0     0 5441.60184    0    2          - 5441.60184     -      -    0s
     0     0 5441.61348    0    2          - 5441.61348     -      -    0s
H    0     0                    5441.6178882 5441.61348  0.00%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 1
  Flow cover: 1

Explored 0 nodes (46 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.441617888154e+03, best bound 5.441613475100e+03, gap 0.0001%