Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:18:15 2013

Optimize a model with 49770 rows, 49070 columns and 196070 nonzeros
Presolve removed 2414 rows and 0 columns
Presolve time: 0.30s
Presolved: 47356 rows, 49070 columns, 191242 nonzeros
Variable types: 49000 continuous, 70 integer (70 binary)

Root relaxation: objective 8.555500e+04, 11615 iterations, 2.04 seconds

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

*    0     0               0    85555.000000 85555.0000   0.0%     -    2s

Explored 0 nodes (11615 simplex iterations) in 2.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.555500000000e+04, best bound 8.555500000000e+04, gap 0.0%