Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:56:43 2012

Optimize a model with 57343 rows, 50400 columns and 221310 nonzeros
Presolve removed 18 rows and 3586 columns
Presolve time: 1.38s
Presolved: 57325 rows, 46814 columns, 217214 nonzeros
Variable types: 0 continuous, 46814 integer (46814 binary)
Found heuristic solution: objective 224.0000000

Root relaxation: objective 2.000000e+00, 36212 iterations, 3.55 seconds

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

     0     0    2.00000    0  396  224.00000    2.00000  99.1%     -   10s
H    0     0                     218.0000000    2.00000  99.1%     -   10s
H    0     0                       4.0000000    2.00000  50.0%     -   10s
H    0     0                       3.0000000    2.00000  33.3%     -   10s

Cutting planes:
  Zero half: 34

Explored 0 nodes (119030 simplex iterations) in 11.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%