Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:08:22 2012

Optimize a model with 64169 rows, 53130 columns and 244488 nonzeros
Presolve removed 20 rows and 4142 columns
Presolve time: 4.32s
Presolved: 64149 rows, 48988 columns, 239790 nonzeros
Variable types: 0 continuous, 48988 integer (48988 binary)
Found heuristic solution: objective 230.0000000

Root relaxation: objective 2.000000e+00, 36052 iterations, 3.49 seconds
Total elapsed time = 12.84s

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

     0     0    2.00000    0  416  230.00000    2.00000  99.1%     -   14s
H    0     0                     219.0000000    2.00000  99.1%     -   14s
H    0     0                       4.0000000    2.00000  50.0%     -   14s
     0     0    2.66667    0 8592    4.00000    2.66667  33.3%     -   36s
     0     0    2.66667    0 16416    4.00000    2.66667  33.3%     -   67s
H    0     0                       3.0000000    2.66667  11.1%     -  100s

Cutting planes:
  Clique: 2
  Zero half: 36

Explored 0 nodes (154335 simplex iterations) in 100.73 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%