Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:47:28 2012

Optimize a model with 54559 rows, 48620 columns and 211198 nonzeros
Presolve removed 16 rows and 3082 columns
Presolve time: 1.20s
Presolved: 54543 rows, 45538 columns, 207622 nonzeros
Variable types: 0 continuous, 45538 integer (45538 binary)
Found heuristic solution: objective 220.0000000

Root relaxation: objective 2.000000e+00, 32498 iterations, 2.67 seconds
Total elapsed time = 8.02s

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

     0     0    2.00000    0  400  220.00000    2.00000  99.1%     -    9s
H    0     0                     217.0000000    2.00000  99.1%     -    9s
H    0     0                       3.0000000    2.00000  33.3%     -    9s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -    9s

Cutting planes:
  Gomory: 3
  Zero half: 28

Explored 0 nodes (111156 simplex iterations) in 9.76 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%