Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:39:45 2013

Optimize a model with 5160 rows, 11030 columns and 37050 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.29s
Presolved: 5150 rows, 11020 columns, 32040 nonzeros
Variable types: 6020 continuous, 5000 integer (5000 binary)

Root relaxation: objective 1.931845e+04, 153 iterations, 0.01 seconds

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

*    0     0               0    19318.446870 19318.4469   0.0%     -    0s

Explored 0 nodes (153 simplex iterations) in 0.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.931844686955e+04, best bound 1.931844686955e+04, gap 0.0%