Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:19:56 2012 Optimize a model with 447 rows, 312 columns and 1427 nonzeros Presolve time: 0.00s Presolved: 447 rows, 312 columns, 1427 nonzeros Variable types: 0 continuous, 312 integer (312 binary) Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 137 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 88 96.00000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s 0 0 0.49803 0 91 95.00000 0.49803 99.5% - 0s H 0 0 92.0000000 0.49803 99.5% - 0s 0 0 1.14264 0 91 92.00000 1.14264 98.8% - 0s 0 0 1.58802 0 92 92.00000 1.58802 98.3% - 0s H 0 0 83.0000000 1.58802 98.1% - 0s H 0 0 79.0000000 1.58802 98.0% - 0s 0 0 1.59958 0 93 79.00000 1.59958 98.0% - 0s H 0 0 77.0000000 1.59958 97.9% - 0s 0 2 1.60128 0 93 77.00000 1.60128 97.9% - 0s H 54 47 51.0000000 4.48517 91.2% 31.7 0s * 141 110 26 47.0000000 8.67337 81.5% 31.2 0s * 912 532 33 46.0000000 13.08000 71.6% 33.2 1s 3728 1007 40.65333 23 148 46.00000 27.59091 40.0% 27.2 5s 8732 1617 44.52000 24 155 46.00000 33.02000 28.2% 24.6 10s 14555 1822 39.31169 22 151 46.00000 36.19608 21.3% 23.0 15s 21263 1501 43.96000 23 153 46.00000 38.23077 16.9% 22.1 20s 28588 362 cutoff 25 46.00000 42.69231 7.19% 21.2 25s Explored 29094 nodes (613412 simplex iterations) in 25.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%