Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:00:52 2013

Optimize a model with 45825 rows, 4225 columns and 139425 nonzeros
Presolve removed 3276 rows and 2134 columns
Presolve time: 0.34s
Presolved: 42549 rows, 2091 columns, 129506 nonzeros
Variable types: 30 continuous, 2061 integer (2061 binary)
Found heuristic solution: objective 88240.000000

Root relaxation: objective 6.294020e+04, 16272 iterations, 1.36 seconds

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

     0     0 62940.2000    0   23 88240.0000 62940.2000  28.7%     -    1s
H    0     0                    62967.000000 62940.2000  0.04%     -    1s
H    0     0                    62966.000000 62940.2000  0.04%     -    1s
H    0     0                    62950.000000 62940.2000  0.02%     -    1s
     0     0 62940.2000    0   13 62950.0000 62940.2000  0.02%     -    2s
     0     0 62940.2000    0   17 62950.0000 62940.2000  0.02%     -    2s
     0     0 62940.2000    0   17 62950.0000 62940.2000  0.02%     -    2s
     0     2 62940.2000    0   17 62950.0000 62940.2000  0.02%     -    2s
H   10     8                    62945.000000 62940.6000  0.01%  12.3    3s

Cutting planes:
  Gomory: 1
  MIR: 8
  Zero half: 1

Explored 10 nodes (25428 simplex iterations) in 3.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.294500000000e+04, best bound 6.294100000000e+04, gap 0.0064%