Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:46:18 2012

Optimize a model with 49247 rows, 46872 columns and 193534 nonzeros
Presolve removed 27 rows and 5402 columns
Presolve time: 1.13s
Presolved: 49220 rows, 41470 columns, 187678 nonzeros
Variable types: 0 continuous, 41470 integer (41470 binary)
Found heuristic solution: objective 216.0000000

Root relaxation: objective 2.000000e+00, 29679 iterations, 2.27 seconds
Total elapsed time = 6.70s

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

     0     0    2.00000    0  360  216.00000    2.00000  99.1%     -    7s
H    0     0                       4.0000000    2.00000  50.0%     -    7s
     0     0    2.66667    0 2694    4.00000    2.66667  33.3%     -   23s
H    0     0                       3.0000000    2.66667  11.1%     -   25s

Cutting planes:
  Clique: 6
  Zero half: 2

Explored 0 nodes (129076 simplex iterations) in 25.88 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%