Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:07 2012 Optimize a model with 207 rows, 146 columns and 661 nonzeros Presolve time: 0.00s Presolved: 207 rows, 146 columns, 661 nonzeros Variable types: 0 continuous, 146 integer (146 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 73 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 42 46.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.71429 0 43 39.00000 0.71429 98.2% - 0s 0 0 0.89213 0 45 39.00000 0.89213 97.7% - 0s H 0 0 36.0000000 0.89213 97.5% - 0s 0 0 0.93294 0 45 36.00000 0.93294 97.4% - 0s 0 0 0.94643 0 45 36.00000 0.94643 97.4% - 0s 0 0 0.94643 0 45 36.00000 0.94643 97.4% - 0s H 0 0 35.0000000 0.94643 97.3% - 0s H 0 0 32.0000000 0.94643 97.0% - 0s 0 2 0.97689 0 45 32.00000 0.97689 96.9% - 0s * 61 43 18 31.0000000 4.46429 85.6% 21.4 0s * 64 35 17 30.0000000 4.46429 85.1% 20.4 0s * 83 47 14 29.0000000 8.54018 70.6% 21.1 0s * 111 66 12 28.0000000 8.71429 68.9% 22.4 0s * 134 79 13 26.0000000 10.14286 61.0% 22.1 0s * 155 72 13 23.0000000 10.15546 55.8% 21.8 0s * 182 55 11 22.0000000 10.39130 52.8% 21.2 0s Cutting planes: Gomory: 1 Zero half: 3 Mod-K: 1 Explored 452 nodes (8463 simplex iterations) in 0.25 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%