Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:13 2013

Optimize a model with 13287 rows, 1849 columns and 40678 nonzeros
Presolve removed 2907 rows and 986 columns
Presolve time: 0.08s
Presolved: 10380 rows, 863 columns, 31657 nonzeros
Variable types: 13 continuous, 850 integer (850 binary)
Found heuristic solution: objective 40564.000000

Root relaxation: objective 3.210969e+04, 2285 iterations, 0.08 seconds

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

     0     0 32109.6875    0    7 40564.0000 32109.6875  20.8%     -    0s
H    0     0                    32125.000000 32109.6875  0.05%     -    0s
H    0     0                    32116.000000 32109.6875  0.02%     -    0s
     0     0 32111.9091    0   20 32116.0000 32111.9091  0.01%     -    0s
     0     0 32111.9091    0   10 32116.0000 32111.9091  0.01%     -    0s
     0     0 32112.6780    0   20 32116.0000 32112.6780  0.01%     -    0s
     0     0 32113.6878    0   21 32116.0000 32113.6878  0.01%     -    0s

Cutting planes:
  Gomory: 4
  Cover: 1
  Implied bound: 1
  Clique: 1
  MIR: 7
  Zero half: 1

Explored 0 nodes (2425 simplex iterations) in 0.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.211600000000e+04, best bound 3.211400000000e+04, gap 0.0062%