Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:16 2013

Optimize a model with 23478 rows, 2704 columns and 71656 nonzeros
Presolve removed 3302 rows and 1398 columns
Presolve time: 0.18s
Presolved: 20176 rows, 1306 columns, 61557 nonzeros
Variable types: 21 continuous, 1285 integer (1285 binary)
Found heuristic solution: objective 60454.000000

Root relaxation: objective 4.319467e+04, 6956 iterations, 0.37 seconds

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

     0     0 43194.6667    0   17 60454.0000 43194.6667  28.5%     -    0s
H    0     0                    43232.000000 43194.6667  0.09%     -    0s
H    0     0                    43230.000000 43194.6667  0.08%     -    0s
H    0     0                    43213.000000 43194.6667  0.04%     -    0s
     0     0 43195.0816    0   37 43213.0000 43195.0816  0.04%     -    0s
     0     0 43195.0816    0   15 43213.0000 43195.0816  0.04%     -    0s
     0     0 43195.0816    0   37 43213.0000 43195.0816  0.04%     -    1s
H    0     0                    43210.000000 43195.0816  0.03%     -    1s
H    0     0                    43205.000000 43195.0816  0.02%     -    1s
     0     0 43195.5173    0   44 43205.0000 43195.5173  0.02%     -    1s
     0     2 43195.9397    0   44 43205.0000 43195.9397  0.02%     -    1s
H   11     8                    43203.000000 43196.8880  0.01%   0.0    1s
H   11     7                    43202.000000 43196.8880  0.01%   0.0    1s

Cutting planes:
  Gomory: 11
  MIR: 38
  Zero half: 4

Explored 288 nodes (14075 simplex iterations) in 1.59 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.320200000000e+04, best bound 4.319800000000e+04, gap 0.0093%