Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:00:13 2013

Optimize a model with 43744 rows, 4096 columns and 133120 nonzeros
Presolve removed 3508 rows and 2073 columns
Presolve time: 0.30s
Presolved: 40236 rows, 2023 columns, 122599 nonzeros
Variable types: 31 continuous, 1992 integer (1992 binary)
Found heuristic solution: objective 95758.000000

Root relaxation: objective 7.068450e+04, 11247 iterations, 0.81 seconds

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

     0     0 70684.5000    0   16 95758.0000 70684.5000  26.2%     -    1s
H    0     0                    70697.000000 70684.5000  0.02%     -    1s
H    0     0                    70695.000000 70684.5000  0.01%     -    1s
H    0     0                    70693.000000 70684.5000  0.01%     -    1s
     0     0 70684.5000    0   16 70693.0000 70684.5000  0.01%     -    1s
     0     0 70684.5000    0   10 70693.0000 70684.5000  0.01%     -    1s
     0     0 70684.5000    0   11 70693.0000 70684.5000  0.01%     -    1s
     0     2 70684.5000    0    8 70693.0000 70684.5000  0.01%     -    1s
H    3     4                    70689.000000 70684.5000  0.01%   6.7    1s

Explored 3 nodes (14599 simplex iterations) in 1.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.068900000000e+04, best bound 7.068500000000e+04, gap 0.0057%