Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:54:01 2013

Optimize a model with 17343 rows, 2209 columns and 53016 nonzeros
Presolve removed 2562 rows and 1142 columns
Presolve time: 0.11s
Presolved: 14781 rows, 1067 columns, 45220 nonzeros
Variable types: 20 continuous, 1047 integer (1047 binary)
Found heuristic solution: objective 48219.000000

Root relaxation: objective 4.010815e+04, 7297 iterations, 0.34 seconds

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

     0     0 40108.1491    0   10 48219.0000 40108.1491  16.8%     -    0s
H    0     0                    40121.000000 40108.1491  0.03%     -    0s
H    0     0                    40120.000000 40108.1491  0.03%     -    0s
     0     0 40109.5527    0   19 40120.0000 40109.5527  0.03%     -    0s
     0     0 40109.5527    0    9 40120.0000 40109.5527  0.03%     -    0s
     0     0 40109.5588    0   20 40120.0000 40109.5588  0.03%     -    0s
H    0     0                    40118.000000 40109.5588  0.02%     -    0s
     0     1 40109.5686    0   20 40118.0000 40109.5686  0.02%     -    0s

Cutting planes:
  Gomory: 2
  Cover: 6
  Implied bound: 3
  Clique: 1
  MIR: 24
  Zero half: 6
  Mod-K: 1

Explored 155 nodes (8907 simplex iterations) in 0.74 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.011800000000e+04, best bound 4.011500000000e+04, gap 0.0075%