Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:37 2013

Optimize a model with 640 rows, 2520 columns and 6010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.03s
Presolved: 620 rows, 2490 columns, 4980 nonzeros
Variable types: 2000 continuous, 490 integer (490 binary)

Root relaxation: objective 1.931845e+04, 122 iterations, 0.00 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 (122 simplex iterations) in 0.05 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%