Gurobi 5.0.1 (linux64) logging started Tue Nov 20 14:29:59 2012 Optimize a model with 940 rows, 190 columns and 1880 nonzeros Presolve removed 212 rows and 0 columns Presolve time: 0.01s Presolved: 728 rows, 190 columns, 1599 nonzeros Variable types: 0 continuous, 190 integer (190 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 7.500000e+01, 472 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 75.00000 0 148 53.00000 75.00000 41.5% - 0s 0 0 74.13435 0 187 53.00000 74.13435 39.9% - 0s 0 0 72.88714 0 189 53.00000 72.88714 37.5% - 0s H 0 0 54.0000000 72.88714 35.0% - 0s 0 0 71.97498 0 186 54.00000 71.97498 33.3% - 0s 0 0 71.68932 0 186 54.00000 71.68932 32.8% - 0s 0 0 71.18212 0 187 54.00000 71.18212 31.8% - 0s 0 0 70.83625 0 187 54.00000 70.83625 31.2% - 0s 0 0 70.78616 0 188 54.00000 70.78616 31.1% - 0s 0 0 70.49790 0 188 54.00000 70.49790 30.6% - 0s 0 0 70.28379 0 190 54.00000 70.28379 30.2% - 0s 0 0 70.06450 0 188 54.00000 70.06450 29.7% - 0s 0 0 69.86999 0 187 54.00000 69.86999 29.4% - 0s 0 0 69.72454 0 188 54.00000 69.72454 29.1% - 0s 0 0 69.67714 0 189 54.00000 69.67714 29.0% - 0s 0 0 69.55343 0 188 54.00000 69.55343 28.8% - 0s 0 0 69.46391 0 185 54.00000 69.46391 28.6% - 0s 0 0 69.33955 0 188 54.00000 69.33955 28.4% - 0s 0 0 69.20953 0 188 54.00000 69.20953 28.2% - 0s 0 0 69.19048 0 188 54.00000 69.19048 28.1% - 0s 0 0 69.19048 0 185 54.00000 69.19048 28.1% - 0s H 0 0 55.0000000 69.19048 25.8% - 0s 0 2 69.19038 0 185 55.00000 69.19038 25.8% - 0s H 30 21 56.0000000 68.97840 23.2% 66.6 0s H 169 86 57.0000000 68.31592 19.9% 62.1 0s H 196 92 58.0000000 68.06524 17.4% 61.7 0s 613 304 63.85749 12 188 58.00000 66.45950 14.6% 56.4 5s 2068 927 61.52381 30 139 58.00000 65.72301 13.3% 52.4 10s 4095 2017 59.59259 29 134 58.00000 64.66667 11.5% 46.3 15s 6988 3314 63.45894 22 155 58.00000 63.80392 10.0% 41.2 20s 10079 4480 60.10465 42 140 58.00000 63.25000 9.05% 38.5 25s 13693 5666 60.20000 27 125 58.00000 62.83333 8.33% 36.3 30s 18313 6806 59.00000 42 104 58.00000 62.39474 7.58% 34.4 35s 23204 7709 59.55556 34 123 58.00000 62.00000 6.90% 33.0 40s 28376 8426 61.00000 24 130 58.00000 61.75000 6.47% 31.9 45s 33812 8878 60.66667 38 111 58.00000 61.50000 6.03% 30.9 50s 38480 9061 60.60000 33 115 58.00000 61.22727 5.56% 30.3 55s 43917 8860 59.91667 37 127 58.00000 61.00000 5.17% 29.7 60s 44000 8868 cutoff 35 58.00000 61.00000 5.17% 29.7 71s 47266 8652 59.01942 29 132 58.00000 60.83721 4.89% 29.4 75s 52404 7911 60.00000 35 114 58.00000 60.55556 4.41% 29.0 80s 57719 6719 cutoff 33 58.00000 60.33333 4.02% 28.7 85s 63793 4351 cutoff 30 58.00000 60.00000 3.45% 28.2 90s 68162 2110 59.12500 40 121 58.00000 59.62500 2.80% 27.9 95s Cutting planes: Gomory: 6 Zero half: 79 Mod-K: 1 Explored 71206 nodes (1945975 simplex iterations) in 96.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%