Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:28:34 2012

Optimize a model with 64183 rows, 51302 columns and 242722 nonzeros
Presolve removed 20 rows and 4070 columns
Presolve time: 4.56s
Presolved: 64163 rows, 47232 columns, 238086 nonzeros
Variable types: 0 continuous, 47232 integer (47232 binary)
Found heuristic solution: objective 226.0000000

Root relaxation: objective 2.000000e+00, 31943 iterations, 2.73 seconds
Total elapsed time = 11.62s

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

     0     0    2.00000    0  400  226.00000    2.00000  99.1%     -   13s
H    0     0                     217.0000000    2.00000  99.1%     -   13s
H    0     0                       4.0000000    2.00000  50.0%     -   13s
     0     0    2.20000    0 14935    4.00000    2.20000  45.0%     -   55s
H    0     0                       3.0000000    2.20000  26.7%     -   85s

Cutting planes:
  Gomory: 1
  Zero half: 10

Explored 0 nodes (150852 simplex iterations) in 85.53 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%