Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:28:15 2012 Optimize a model with 403 rows, 230 columns and 1235 nonzeros Presolve time: 0.00s Presolved: 403 rows, 230 columns, 1235 nonzeros Variable types: 0 continuous, 230 integer (230 binary) Found heuristic solution: objective 106.0000000 Found heuristic solution: objective 101.0000000 Root relaxation: objective 0.000000e+00, 59 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 29 101.00000 0.00000 100% - 0s H 0 0 99.0000000 0.00000 100% - 0s H 0 0 98.0000000 0.00000 100% - 0s 0 0 0.77586 0 31 98.00000 0.77586 99.2% - 0s H 0 0 92.0000000 0.77586 99.2% - 0s 0 0 0.86207 0 31 92.00000 0.86207 99.1% - 0s 0 0 0.87133 0 49 92.00000 0.87133 99.1% - 0s 0 0 0.91954 0 31 92.00000 0.91954 99.0% - 0s 0 0 0.94828 0 31 92.00000 0.94828 99.0% - 0s 0 0 0.94828 0 31 92.00000 0.94828 99.0% - 0s 0 0 0.94828 0 31 92.00000 0.94828 99.0% - 0s 0 0 0.94828 0 31 92.00000 0.94828 99.0% - 0s 0 2 1.59756 0 31 92.00000 1.59756 98.3% - 0s * 32 27 17 91.0000000 10.62500 88.3% 38.6 0s * 63 46 17 90.0000000 10.63889 88.2% 37.7 0s H 135 94 89.0000000 18.06667 79.7% 35.9 0s * 181 128 20 88.0000000 24.60870 72.0% 35.9 0s * 217 146 18 87.0000000 24.64000 71.7% 35.4 0s * 553 276 20 86.0000000 34.15000 60.3% 28.4 0s * 682 340 21 85.0000000 37.25000 56.2% 27.5 0s * 1149 428 26 84.0000000 39.53846 52.9% 28.6 1s * 2791 597 27 83.0000000 47.90909 42.3% 26.2 2s * 2792 589 26 82.0000000 47.90909 41.6% 26.2 2s H 2853 594 81.0000000 48.35294 40.3% 26.1 2s H 3267 633 78.0000000 52.00000 33.3% 25.8 3s 5461 721 68.57895 20 126 78.00000 58.18182 25.4% 24.7 5s * 7542 620 24 77.0000000 62.77778 18.5% 23.9 6s Cutting planes: Gomory: 1 Mod-K: 3 Explored 10521 nodes (237645 simplex iterations) in 8.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.700000000000e+01, best bound 7.700000000000e+01, gap 0.0%