Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:57:40 2013

Optimize a model with 32567 rows, 3364 columns and 99238 nonzeros
Presolve removed 2821 rows and 1703 columns
Presolve time: 0.23s
Presolved: 29746 rows, 1661 columns, 90832 nonzeros
Variable types: 29 continuous, 1632 integer (1632 binary)
Found heuristic solution: objective 61450.000000

Root relaxation: objective 4.312108e+04, 9247 iterations, 0.65 seconds

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

     0     0 43121.0769    0   12 61450.0000 43121.0769  29.8%     -    1s
H    0     0                    43136.000000 43121.0769  0.03%     -    1s
H    0     0                    43133.000000 43121.0769  0.03%     -    1s
     0     0 43121.5119    0   43 43133.0000 43121.5119  0.03%     -    1s
     0     0 43121.5119    0   11 43133.0000 43121.5119  0.03%     -    1s
     0     0 43121.6293    0   40 43133.0000 43121.6293  0.03%     -    1s
     0     2 43121.7415    0   40 43133.0000 43121.7415  0.03%     -    1s
H    1     2                    43132.000000 43121.7415  0.02%   4.0    1s
H   42    22                    43131.000000 43123.4657  0.02%  52.7    2s
*   96    65              53    43130.000000 43123.4657  0.02%  32.7    2s
H   97    57                    43129.000000 43123.4657  0.01%  32.3    2s

Cutting planes:
  Gomory: 3
  MIR: 51
  Zero half: 14

Explored 580 nodes (26400 simplex iterations) in 3.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.312900000000e+04, best bound 4.312500000000e+04, gap 0.0093%