Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:20:14 2012
Optimize a model with 4032 rows, 1806 columns and 13734 nonzeros
Presolve removed 672 rows and 0 columns
Presolve time: 0.08s
Presolved: 3360 rows, 1806 columns, 12180 nonzeros
Variable types: 0 continuous, 1806 integer (1806 binary)
Found heuristic solution: objective 25.0000000
Root relaxation: objective 3.000000e+00, 3429 iterations, 0.23 seconds
Nodes | Current Node | Objective Bounds | Work
Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time
0 0 3.00000 0 50 25.00000 3.00000 88.0% - 0s
H 0 0 4.0000000 3.00000 25.0% - 0s
0 0 3.00000 0 233 4.00000 3.00000 25.0% - 0s
0 0 3.00000 0 82 4.00000 3.00000 25.0% - 1s
0 0 3.00000 0 81 4.00000 3.00000 25.0% - 1s
0 0 3.00000 0 52 4.00000 3.00000 25.0% - 2s
0 0 3.00000 0 66 4.00000 3.00000 25.0% - 2s
0 0 3.00000 0 78 4.00000 3.00000 25.0% - 3s
0 0 3.00000 0 76 4.00000 3.00000 25.0% - 3s
0 0 3.00000 0 80 4.00000 3.00000 25.0% - 4s
0 0 3.00000 0 46 4.00000 3.00000 25.0% - 4s
0 0 3.00000 0 80 4.00000 3.00000 25.0% - 5s
0 0 3.00000 0 80 4.00000 3.00000 25.0% - 5s
0 2 3.00000 0 80 4.00000 3.00000 25.0% - 5s
9 8 3.00000 1 50 4.00000 3.00000 25.0% 173 10s
15 11 3.00000 17 209 4.00000 3.00000 25.0% 3562 15s
Cutting planes:
Gomory: 1
Zero half: 5
Explored 19 nodes (114650 simplex iterations) in 17.00 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%