Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:34:04 2012

Optimize a model with 5455 rows, 1980 columns and 18126 nonzeros
Presolve removed 1762 rows and 2 columns
Presolve time: 0.11s
Presolved: 3693 rows, 1978 columns, 14042 nonzeros
Variable types: 0 continuous, 1978 integer (1978 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 3.000000e+00, 4427 iterations, 0.58 seconds

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

     0     0    3.00000    0  182   44.00000    3.00000  93.2%     -    1s
H    0     0                      41.0000000    3.00000  92.7%     -    1s
H    0     0                       6.0000000    3.00000  50.0%     -    1s
     0     0    3.00000    0  120    6.00000    3.00000  50.0%     -    1s
H    0     0                       5.0000000    3.00000  40.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    2s

Cutting planes:
  Gomory: 6
  Zero half: 119

Explored 0 nodes (11834 simplex iterations) in 2.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%