Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:28:23 2012 Optimize a model with 419 rows, 238 columns and 1283 nonzeros Presolve time: 0.00s Presolved: 419 rows, 238 columns, 1283 nonzeros Variable types: 0 continuous, 238 integer (238 binary) Found heuristic solution: objective 112.0000000 Found heuristic solution: objective 104.0000000 Root relaxation: objective 0.000000e+00, 64 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 29 104.00000 0.00000 100% - 0s H 0 0 96.0000000 0.00000 100% - 0s 0 0 0.82759 0 31 96.00000 0.82759 99.1% - 0s 0 0 0.93103 0 31 96.00000 0.93103 99.0% - 0s 0 0 1.00525 0 46 96.00000 1.00525 99.0% - 0s 0 0 1.03448 0 31 96.00000 1.03448 98.9% - 0s 0 0 1.06897 0 31 96.00000 1.06897 98.9% - 0s 0 0 1.06897 0 31 96.00000 1.06897 98.9% - 0s 0 0 1.06897 0 31 96.00000 1.06897 98.9% - 0s 0 0 1.06897 0 31 96.00000 1.06897 98.9% - 0s 0 2 1.10682 0 31 96.00000 1.10682 98.8% - 0s * 252 160 24 95.0000000 28.23529 70.3% 35.2 0s * 254 160 21 94.0000000 28.23529 70.0% 35.0 0s * 277 175 24 92.0000000 28.33333 69.2% 33.9 0s * 512 276 21 91.0000000 37.00000 59.3% 30.9 0s * 791 371 27 90.0000000 40.95652 54.5% 33.4 1s * 1033 348 26 89.0000000 40.95652 54.0% 32.9 1s * 1054 335 30 88.0000000 40.95652 53.5% 32.7 1s * 1253 320 31 87.0000000 43.04348 50.5% 32.8 1s * 1435 310 26 86.0000000 44.00000 48.8% 32.3 1s * 1726 376 26 84.0000000 48.60000 42.1% 31.7 1s * 1733 370 27 83.0000000 48.60000 41.4% 31.6 1s 4790 713 79.47059 24 134 83.00000 59.42857 28.4% 28.4 5s * 4902 709 26 82.0000000 59.84211 27.0% 28.3 5s 11318 401 73.55556 23 134 82.00000 69.37500 15.4% 25.8 10s Cutting planes: Gomory: 1 Mod-K: 4 Explored 12943 nodes (326016 simplex iterations) in 10.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.200000000000e+01, best bound 8.200000000000e+01, gap 0.0%