Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:00:27 2013

Optimize a model with 45825 rows, 4225 columns and 139425 nonzeros
Presolve removed 4343 rows and 2155 columns
Presolve time: 0.34s
Presolved: 41482 rows, 2070 columns, 126119 nonzeros
Variable types: 27 continuous, 2043 integer (2043 binary)
Found heuristic solution: objective 108709.00000

Root relaxation: objective 8.750248e+04, 12097 iterations, 1.00 seconds

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

     0     0 87502.4800    0    9 108709.000 87502.4800  19.5%     -    1s
H    0     0                    87529.000000 87502.4800  0.03%     -    1s
H    0     0                    87518.000000 87502.4800  0.02%     -    1s
H    0     0                    87514.000000 87502.4800  0.01%     -    1s
     0     0 87502.4800    0   12 87514.0000 87502.4800  0.01%     -    1s
     0     0 87502.4800    0    6 87514.0000 87502.4800  0.01%     -    2s
H    0     0                    87507.000000 87502.4800  0.01%     -    2s

Explored 0 nodes (13367 simplex iterations) in 2.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.750700000000e+04, best bound 8.750300000000e+04, gap 0.0046%