Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:39:02 2012

Optimize a model with 5129 rows, 2070 columns and 17233 nonzeros
Presolve removed 1578 rows and 47 columns
Presolve time: 0.13s
Presolved: 3551 rows, 2023 columns, 13385 nonzeros
Variable types: 0 continuous, 2023 integer (2023 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 3.000000e+00, 3579 iterations, 0.40 seconds

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

     0     0    3.00000    0  108   45.00000    3.00000  93.3%     -    1s
H    0     0                      37.0000000    3.00000  91.9%     -    1s
H    0     0                      29.0000000    3.00000  89.7%     -    1s
H    0     0                       5.0000000    3.00000  40.0%     -    1s
     0     0    3.00000    0  828    5.00000    3.00000  40.0%     -    1s
     0     0    3.03053    0  945    5.00000    3.03053  39.4%     -    2s
H    0     0                       4.0000000    3.03053  24.2%     -    2s

Cutting planes:
  Gomory: 2
  Clique: 3
  Zero half: 5

Explored 0 nodes (16107 simplex iterations) in 2.49 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%