Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:58:04 2012 Optimize a model with 579 rows, 522 columns and 1967 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 579 rows, 497 columns, 1942 nonzeros Variable types: 0 continuous, 497 integer (496 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 322 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 0 205 98.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.29038 0 207 76.00000 0.29038 100% - 0s H 0 0 66.0000000 0.29038 100% - 0s 0 0 0.78256 0 208 66.00000 0.78256 98.8% - 0s H 0 0 44.0000000 0.78256 98.2% - 0s 0 0 0.78289 0 210 44.00000 0.78289 98.2% - 0s 0 0 0.78289 0 210 44.00000 0.78289 98.2% - 0s H 0 0 41.0000000 0.78289 98.1% - 0s H 0 0 38.0000000 0.78289 97.9% - 0s 0 2 0.80260 0 210 38.00000 0.80260 97.9% - 0s H 27 27 37.0000000 1.00000 97.3% 38.7 0s * 70 56 43 28.0000000 1.00000 96.4% 28.0 0s * 726 447 38 27.0000000 5.41384 79.9% 35.7 2s * 765 436 25 24.0000000 5.41973 77.4% 36.1 2s 2286 467 cutoff 26 24.00000 15.39891 35.8% 27.1 5s * 2656 489 31 23.0000000 15.95270 30.6% 26.4 5s 6070 44 cutoff 23 23.00000 21.00000 8.70% 24.4 10s Cutting planes: Gomory: 5 Zero half: 2 Mod-K: 1 Explored 6128 nodes (150607 simplex iterations) in 10.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%