Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:05 2013

Optimize a model with 17343 rows, 2209 columns and 53016 nonzeros
Presolve removed 2158 rows and 1135 columns
Presolve time: 0.12s
Presolved: 15185 rows, 1074 columns, 46303 nonzeros
Variable types: 17 continuous, 1057 integer (1057 binary)
Found heuristic solution: objective 54241.000000

Root relaxation: objective 4.329053e+04, 4678 iterations, 0.20 seconds

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

     0     0 43290.5269    0    9 54241.0000 43290.5269  20.2%     -    0s
H    0     0                    43310.000000 43290.5269  0.04%     -    0s
H    0     0                    43305.000000 43290.5269  0.03%     -    0s
H    0     0                    43299.000000 43290.5269  0.02%     -    0s
     0     0 43291.4533    0   15 43299.0000 43291.4533  0.02%     -    0s
     0     0 43291.4533    0   10 43299.0000 43291.4533  0.02%     -    0s
H    0     0                    43298.000000 43291.4533  0.02%     -    0s
     0     0 43293.0468    0   22 43298.0000 43293.0468  0.01%     -    0s
     0     1 43293.1187    0   22 43298.0000 43293.1187  0.01%     -    0s

Cutting planes:
  Gomory: 7
  Cover: 1
  Implied bound: 2
  MIR: 7
  GUB cover: 1
  Zero half: 1

Explored 4 nodes (4965 simplex iterations) in 0.53 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.329800000000e+04, best bound 4.329500000000e+04, gap 0.0069%