Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:42 2012 Optimize a model with 253 rows, 189 columns and 819 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 253 rows, 188 columns, 818 nonzeros Variable types: 0 continuous, 188 integer (187 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 80 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 61 51.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s 0 0 0.52823 0 62 41.00000 0.52823 98.7% - 0s 0 0 1.00000 0 63 41.00000 1.00000 97.6% - 0s 0 0 1.02890 0 64 41.00000 1.02890 97.5% - 0s H 0 0 40.0000000 1.02890 97.4% - 0s 0 0 1.05148 0 66 40.00000 1.05148 97.4% - 0s 0 0 1.05148 0 66 40.00000 1.05148 97.4% - 0s 0 2 1.06127 0 66 40.00000 1.06127 97.3% - 0s H 27 27 29.0000000 3.58288 87.6% 30.4 0s * 30 25 18 28.0000000 3.58288 87.2% 30.0 0s * 52 38 13 25.0000000 3.62135 85.5% 29.2 0s * 74 49 13 24.0000000 6.46398 73.1% 29.1 0s * 340 89 18 23.0000000 11.62185 49.5% 25.7 0s * 802 42 13 22.0000000 16.51020 25.0% 22.0 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 909 nodes (19590 simplex iterations) in 0.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%