Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:26:47 2012
Optimize a model with 4514 rows, 1892 columns and 15220 nonzeros
Presolve removed 1078 rows and 45 columns
Presolve time: 0.10s
Presolved: 3436 rows, 1847 columns, 12523 nonzeros
Variable types: 0 continuous, 1847 integer (1847 binary)
Found heuristic solution: objective 43.0000000
Root relaxation: objective 3.000000e+00, 3305 iterations, 0.33 seconds
Nodes | Current Node | Objective Bounds | Work
Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time
0 0 3.00000 0 704 43.00000 3.00000 93.0% - 1s
H 0 0 32.0000000 3.00000 90.6% - 1s
H 0 0 25.0000000 3.00000 88.0% - 1s
0 0 3.00000 0 705 25.00000 3.00000 88.0% - 1s
H 0 0 19.0000000 3.00000 84.2% - 1s
0 0 3.00000 0 134 19.00000 3.00000 84.2% - 2s
H 0 0 13.0000000 3.00000 76.9% - 2s
H 0 0 4.0000000 3.00000 25.0% - 2s
0 0 3.00000 0 48 4.00000 3.00000 25.0% - 3s
0 0 3.00000 0 90 4.00000 3.00000 25.0% - 4s
0 0 3.00000 0 90 4.00000 3.00000 25.0% - 5s
0 0 3.00000 0 93 4.00000 3.00000 25.0% - 6s
0 0 3.00000 0 104 4.00000 3.00000 25.0% - 7s
0 0 3.00000 0 85 4.00000 3.00000 25.0% - 7s
0 2 3.00000 0 85 4.00000 3.00000 25.0% - 8s
4 4 3.00000 1 431 4.00000 3.00000 25.0% 734 11s
8 7 3.00000 1 106 4.00000 3.00000 25.0% 367 15s
Cutting planes:
Gomory: 17
Zero half: 120
Explored 9 nodes (91932 simplex iterations) in 16.77 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%