Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:59:53 2012 Optimize a model with 317 rows, 242 columns and 1032 nonzeros Presolve time: 0.00s Presolved: 317 rows, 242 columns, 1032 nonzeros Variable types: 0 continuous, 242 integer (242 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 0.000000e+00, 123 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 83 66.00000 0.00000 100% - 0s H 0 0 52.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s 0 0 0.54738 0 84 51.00000 0.54738 98.9% - 0s H 0 0 46.0000000 0.54738 98.8% - 0s 0 0 1.12688 0 85 46.00000 1.12688 97.6% - 0s 0 0 1.35829 0 86 46.00000 1.35829 97.0% - 0s H 0 0 42.0000000 1.35829 96.8% - 0s 0 0 1.37675 0 87 42.00000 1.37675 96.7% - 0s 0 0 1.37733 0 88 42.00000 1.37733 96.7% - 0s 0 0 1.37733 0 88 42.00000 1.37733 96.7% - 0s 0 2 1.38725 0 88 42.00000 1.38725 96.7% - 0s H 27 27 41.0000000 3.77897 90.8% 33.7 0s * 43 36 27 31.0000000 3.77897 87.8% 27.0 0s * 82 62 25 30.0000000 3.84826 87.2% 25.3 0s * 165 114 19 29.0000000 5.67371 80.4% 25.7 0s * 215 145 16 28.0000000 6.59168 76.5% 26.9 0s * 263 160 24 26.0000000 6.72177 74.1% 27.7 0s Explored 3680 nodes (72821 simplex iterations) in 2.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%