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 999 rows and 2959 columns
Presolve time: 0.15s
Presolved: 29 rows, 85 columns, 170 nonzeros
Variable types: 62 continuous, 23 integer (23 binary)

Root relaxation: objective 7.659086e+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 7659.08578    0    1          - 7659.08578     -      -    0s
     0     0 7664.63443    0    2          - 7664.63443     -      -    0s
     0     0 7664.63445    0    2          - 7664.63445     -      -    0s
     0     0 7664.63726    0    2          - 7664.63726     -      -    0s
     0     0 7664.64010    0    2          - 7664.64010     -      -    0s
     0     0 7664.64292    0    2          - 7664.64292     -      -    0s
H    0     0                    7664.6454259 7664.64292  0.00%     -    0s

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

Explored 0 nodes (20 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664645425903e+03, best bound 7.664642921575e+03, gap 0.0000%