Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:30:18 2012 Optimize a model with 487 rows, 274 columns and 1489 nonzeros Presolve time: 0.00s Presolved: 487 rows, 274 columns, 1489 nonzeros Variable types: 0 continuous, 274 integer (274 binary) Found heuristic solution: objective 125.0000000 Found heuristic solution: objective 119.0000000 Root relaxation: objective 0.000000e+00, 66 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 31 119.00000 0.00000 100% - 0s H 0 0 118.0000000 0.00000 100% - 0s 0 0 0.91756 0 33 118.00000 0.91756 99.2% - 0s 0 0 1.06093 0 33 118.00000 1.06093 99.1% - 0s 0 0 1.08961 0 33 118.00000 1.08961 99.1% - 0s 0 0 1.08961 0 33 118.00000 1.08961 99.1% - 0s 0 0 1.08961 0 33 118.00000 1.08961 99.1% - 0s 0 0 1.08961 0 33 118.00000 1.08961 99.1% - 0s H 0 0 117.0000000 1.08961 99.1% - 0s 0 2 1.11111 0 33 117.00000 1.11111 99.1% - 0s H 270 199 113.0000000 27.53595 75.6% 42.2 0s * 274 201 26 110.0000000 27.53595 75.0% 41.7 0s * 288 199 27 109.0000000 27.53595 74.7% 39.9 0s * 413 236 17 101.0000000 33.68000 66.7% 38.0 0s * 2060 493 26 100.0000000 52.43750 47.6% 35.5 2s * 2063 490 25 99.0000000 52.43750 47.0% 35.4 2s H 2582 593 98.0000000 54.18182 44.7% 34.9 3s 3531 775 cutoff 24 98.00000 58.83333 40.0% 34.0 5s * 6073 1077 24 97.0000000 65.47059 32.5% 32.3 7s 8442 1230 cutoff 22 97.00000 70.14286 27.7% 31.4 10s 14209 1279 81.63158 21 144 97.00000 77.00000 20.6% 29.8 15s 20672 816 90.94737 22 155 97.00000 81.57895 15.9% 28.5 20s Cutting planes: Gomory: 1 Zero half: 4 Explored 24496 nodes (680066 simplex iterations) in 22.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.700000000000e+01, best bound 9.700000000000e+01, gap 0.0%