Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:02:09 2013

Optimize a model with 52462 rows, 4624 columns and 159528 nonzeros
Presolve removed 8378 rows and 2421 columns
Presolve time: 0.38s
Presolved: 44084 rows, 2203 columns, 133877 nonzeros
Variable types: 25 continuous, 2178 integer (2178 binary)
Found heuristic solution: objective 115839.00000

Root relaxation: objective 9.571392e+04, 8643 iterations, 0.77 seconds

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

     0     0 95713.9167    0    7 115839.000 95713.9167  17.4%     -    1s
H    0     0                    95723.000000 95713.9167  0.01%     -    1s

Explored 0 nodes (8680 simplex iterations) in 1.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.572300000000e+04, best bound 9.571400000000e+04, gap 0.0094%