Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:48:59 2012

Optimize a model with 67047 rows, 54056 columns and 254038 nonzeros
Presolve removed 14 rows and 2786 columns
Presolve time: 4.72s
Presolved: 67033 rows, 51270 columns, 250676 nonzeros
Variable types: 0 continuous, 51270 integer (51270 binary)
Found heuristic solution: objective 232.0000000

Root relaxation: objective 2.000000e+00, 37662 iterations, 3.90 seconds
Total elapsed time = 13.76s

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

     0     0    2.00000    0  428  232.00000    2.00000  99.1%     -   15s
H    0     0                     210.0000000    2.00000  99.0%     -   15s
H    0     0                       4.0000000    2.00000  50.0%     -   16s
H    0     0                       3.0000000    2.00000  33.3%     -   16s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   16s

Cutting planes:
  Gomory: 2
  Zero half: 61

Explored 0 nodes (125538 simplex iterations) in 16.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%