Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:43:28 2012

Optimize a model with 12375 rows, 18632 columns and 55078 nonzeros
Presolve removed 37 rows and 4762 columns
Presolve time: 0.22s
Presolved: 12338 rows, 13870 columns, 50136 nonzeros
Variable types: 0 continuous, 13870 integer (13870 binary)
Found heuristic solution: objective 136.0000000

Root relaxation: objective 2.000000e+00, 9550 iterations, 0.41 seconds

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

     0     0    2.00000    0  136  136.00000    2.00000  98.5%     -    1s
H    0     0                      55.0000000    2.00000  96.4%     -    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 (33272 simplex iterations) in 1.45 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%