Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:38:37 2012

Optimize a model with 49879 rows, 46440 columns and 195003 nonzeros
Presolve removed 27 rows and 5377 columns
Presolve time: 1.14s
Presolved: 49852 rows, 41063 columns, 189164 nonzeros
Variable types: 0 continuous, 41063 integer (41063 binary)
Found heuristic solution: objective 215.0000000

Root relaxation: objective 2.000000e+00, 29329 iterations, 2.55 seconds
Total elapsed time = 7.21s

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

     0     0    2.00000    0  368  215.00000    2.00000  99.1%     -    8s
H    0     0                     203.0000000    2.00000  99.0%     -    8s
H    0     0                       4.0000000    2.00000  50.0%     -    8s
H    0     0                       3.0000000    2.00000  33.3%     -    8s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -    8s

Cutting planes:
  Gomory: 1
  Zero half: 39

Explored 0 nodes (100414 simplex iterations) in 8.70 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%