Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:44:34 2012

Optimize a model with 15455 rows, 19182 columns and 64858 nonzeros
Presolve removed 28 rows and 3590 columns
Presolve time: 0.29s
Presolved: 15427 rows, 15592 columns, 61046 nonzeros
Variable types: 0 continuous, 15592 integer (15592 binary)
Found heuristic solution: objective 138.0000000

Root relaxation: objective 2.000000e+00, 10452 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  178  138.00000    2.00000  98.6%     -    1s
H    0     0                     137.0000000    2.00000  98.5%     -    1s
H    0     0                       4.0000000    2.00000  50.0%     -    1s
H    0     0                       3.0000000    2.00000  33.3%     -    1s

Cutting planes:
  Zero half: 1

Explored 0 nodes (34056 simplex iterations) in 1.82 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%