Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:45:22 2012 Optimize a model with 433 rows, 246 columns and 1326 nonzeros Presolve time: 0.00s Presolved: 433 rows, 246 columns, 1326 nonzeros Variable types: 0 continuous, 246 integer (246 binary) Found heuristic solution: objective 107.0000000 Found heuristic solution: objective 106.0000000 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 30 106.00000 0.00000 100% - 0s 0 0 1.13636 0 32 106.00000 1.13636 98.9% - 0s H 0 0 102.0000000 1.13636 98.9% - 0s 0 0 1.13636 0 32 102.00000 1.13636 98.9% - 0s 0 0 1.13636 0 32 102.00000 1.13636 98.9% - 0s 0 0 1.18182 0 32 102.00000 1.18182 98.8% - 0s 0 0 1.18182 0 32 102.00000 1.18182 98.8% - 0s 0 0 1.18182 0 32 102.00000 1.18182 98.8% - 0s 0 0 1.18182 0 32 102.00000 1.18182 98.8% - 0s H 0 0 98.0000000 1.18182 98.8% - 0s 0 2 1.18182 0 32 98.00000 1.18182 98.8% - 0s H 217 148 97.0000000 23.18182 76.1% 36.9 0s H 367 222 95.0000000 23.38095 75.4% 34.0 0s * 369 219 23 92.0000000 23.38095 74.6% 33.9 0s * 416 245 17 91.0000000 29.18182 67.9% 34.7 0s * 495 288 21 90.0000000 30.21717 66.4% 34.3 0s * 1251 388 34 89.0000000 39.42857 55.7% 34.7 1s * 1601 388 27 88.0000000 42.31250 51.9% 33.4 1s H 2136 506 87.0000000 47.00000 46.0% 31.9 2s 4352 943 80.11111 25 146 87.00000 54.00000 37.9% 30.3 5s * 5861 1164 28 86.0000000 58.90000 31.5% 29.7 6s 9754 1481 cutoff 26 86.00000 64.87500 24.6% 28.3 10s 16944 1303 80.88889 25 146 86.00000 70.75000 17.7% 26.5 15s Cutting planes: Gomory: 1 Zero half: 4 Explored 24536 nodes (613217 simplex iterations) in 19.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.600000000000e+01, best bound 8.600000000000e+01, gap 0.0%