Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:27:21 2013

Optimize a model with 2047 rows, 529 columns and 6348 nonzeros
Presolve removed 655 rows and 292 columns
Presolve time: 0.02s
Presolved: 1392 rows, 237 columns, 4276 nonzeros
Variable types: 5 continuous, 232 integer (232 binary)
Found heuristic solution: objective 7192.0000000

Root relaxation: objective 6.146274e+03, 250 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 6146.27422    0    6 7192.00000 6146.27422  14.5%     -    0s
H    0     0                    6161.0000000 6146.27422  0.24%     -    0s
H    0     0                    6157.0000000 6146.27422  0.17%     -    0s
H    0     0                    6153.0000000 6146.27422  0.11%     -    0s
     0     0 6147.13232    0   17 6153.00000 6147.13232  0.10%     -    0s
     0     0 6147.13232    0    6 6153.00000 6147.13232  0.10%     -    0s
     0     0 6147.13232    0   17 6153.00000 6147.13232  0.10%     -    0s
     0     0 6148.34553    0   24 6153.00000 6148.34553  0.08%     -    0s
     0     0 6148.95413    0   24 6153.00000 6148.95413  0.07%     -    0s
     0     0 6149.29329    0   25 6153.00000 6149.29329  0.06%     -    0s
     0     0 6149.49236    0   26 6153.00000 6149.49236  0.06%     -    0s
     0     0 6149.50024    0   26 6153.00000 6149.50024  0.06%     -    0s
     0     0 6149.51098    0   25 6153.00000 6149.51098  0.06%     -    0s
     0     0 6149.51098    0   25 6153.00000 6149.51098  0.06%     -    0s
     0     2 6149.52270    0   25 6153.00000 6149.52270  0.06%     -    0s

Cutting planes:
  Gomory: 1
  Cover: 6
  Implied bound: 2
  MIR: 21
  GUB cover: 1
  Zero half: 3
  Mod-K: 1

Explored 45 nodes (652 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.153000000000e+03, best bound 6.153000000000e+03, gap 0.0%