Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:48:16 2012

Optimize a model with 15872 rows, 20592 columns and 67494 nonzeros
Presolve removed 30 rows and 4006 columns
Presolve time: 0.30s
Presolved: 15842 rows, 16586 columns, 63268 nonzeros
Variable types: 0 continuous, 16586 integer (16586 binary)
Found heuristic solution: objective 143.0000000

Root relaxation: objective 2.000000e+00, 10746 iterations, 0.48 seconds

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

     0     0    2.00000    0  174  143.00000    2.00000  98.6%     -    1s
H    0     0                       4.0000000    2.00000  50.0%     -    1s
H    0     0                       3.0000000    2.00000  33.3%     -    1s

Explored 0 nodes (36605 simplex iterations) in 1.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%