Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:28:32 2012 Optimize a model with 453 rows, 257 columns and 1387 nonzeros Presolve time: 0.00s Presolved: 453 rows, 257 columns, 1387 nonzeros Variable types: 0 continuous, 257 integer (257 binary) Found heuristic solution: objective 120.0000000 Found heuristic solution: objective 115.0000000 Root relaxation: objective 0.000000e+00, 65 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 31 115.00000 0.00000 100% - 0s H 0 0 113.0000000 0.00000 100% - 0s H 0 0 110.0000000 0.00000 100% - 0s H 0 0 107.0000000 0.00000 100% - 0s 0 0 0.64516 0 33 107.00000 0.64516 99.4% - 0s 0 0 0.77419 0 33 107.00000 0.77419 99.3% - 0s 0 0 0.79263 0 33 107.00000 0.79263 99.3% - 0s 0 0 0.79263 0 33 107.00000 0.79263 99.3% - 0s 0 0 0.79263 0 33 107.00000 0.79263 99.3% - 0s 0 0 0.79263 0 33 107.00000 0.79263 99.3% - 0s 0 2 0.83516 0 33 107.00000 0.83516 99.2% - 0s * 34 32 18 105.0000000 6.47143 93.8% 41.9 0s * 209 139 18 104.0000000 20.42857 80.4% 40.5 0s * 283 175 20 103.0000000 20.87500 79.7% 38.7 0s * 320 185 22 102.0000000 20.91667 79.5% 37.0 0s H 361 193 100.0000000 28.18182 71.8% 36.9 0s * 459 251 17 99.0000000 28.60000 71.1% 36.7 0s * 511 267 22 98.0000000 29.56000 69.8% 35.7 0s * 530 271 20 96.0000000 29.61538 69.2% 35.4 0s * 552 277 19 95.0000000 29.81818 68.6% 35.2 0s * 1288 404 27 94.0000000 42.57143 54.7% 36.2 1s * 1448 374 30 93.0000000 43.37500 53.4% 35.5 1s * 1450 354 28 92.0000000 43.37500 52.9% 35.4 1s * 1821 417 25 91.0000000 49.16667 46.0% 35.2 2s * 2138 464 27 90.0000000 50.35294 44.1% 34.2 2s H 2952 591 89.0000000 54.55556 38.7% 33.3 3s 3990 740 73.45455 18 136 89.00000 58.09091 34.7% 32.1 5s 9701 1066 83.31579 21 140 89.00000 69.60000 21.8% 28.9 10s 16686 750 87.00000 22 144 89.00000 75.00000 15.7% 27.0 15s Cutting planes: Gomory: 1 Zero half: 4 Explored 20910 nodes (547101 simplex iterations) in 17.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.900000000000e+01, best bound 8.900000000000e+01, gap 0.0%