Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 87 rows, 84 columns and 299 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 87 rows, 79 columns, 294 nonzeros Variable types: 0 continuous, 79 integer (78 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 48 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 35 20.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.42857 0 36 10.00000 0.42857 95.7% - 0s H 0 0 9.0000000 0.42857 95.2% - 0s 0 0 1.04424 0 38 9.00000 1.04424 88.4% - 0s H 0 0 6.0000000 1.04424 82.6% - 0s 0 0 1.22997 0 40 6.00000 1.22997 79.5% - 0s 0 0 1.23323 0 41 6.00000 1.23323 79.4% - 0s 0 0 1.23323 0 41 6.00000 1.23323 79.4% - 0s H 0 0 5.0000000 1.23323 75.3% - 0s 0 2 1.23600 0 41 5.00000 1.23600 75.3% - 0s * 14 10 8 4.0000000 1.24598 68.9% 18.7 0s * 92 9 5 3.0000000 1.66667 44.4% 14.8 0s Cutting planes: Gomory: 4 Zero half: 10 Explored 112 nodes (1718 simplex iterations) in 0.04 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%