Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:41:34 2013

Optimize a model with 161799 rows, 9801 columns and 490050 nonzeros
Presolve removed 12065 rows and 4989 columns
Presolve time: 2.25s
Presolved: 149734 rows, 4812 columns, 452745 nonzeros
Variable types: 37 continuous, 4775 integer (4775 binary)
Found heuristic solution: objective 217887.00000

Root relaxation: objective 1.701741e+05, 28500 iterations, 4.31 seconds

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

     0     0 170174.120    0   12 217887.000 170174.120  21.9%     -    7s
H    0     0                    170201.00000 170174.120  0.02%     -    7s
H    0     0                    170192.00000 170174.120  0.01%     -    7s
H    0     0                    170189.00000 170174.120  0.01%     -    7s

Explored 0 nodes (28583 simplex iterations) in 7.51 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.701890000000e+05, best bound 1.701750000000e+05, gap 0.0082%