Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:13:45 2012 Optimize a model with 423 rows, 297 columns and 1352 nonzeros Presolve time: 0.00s Presolved: 423 rows, 297 columns, 1352 nonzeros Variable types: 0 continuous, 297 integer (297 binary) Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 125 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 85 100.00000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s 0 0 0.49398 0 88 89.00000 0.49398 99.4% - 0s H 0 0 82.0000000 0.49398 99.4% - 0s 0 0 0.50403 0 89 82.00000 0.50403 99.4% - 0s H 0 0 79.0000000 0.50403 99.4% - 0s 0 0 0.52830 0 89 79.00000 0.52830 99.3% - 0s H 0 0 78.0000000 0.52830 99.3% - 0s 0 0 0.56604 0 89 78.00000 0.56604 99.3% - 0s 0 0 0.59630 0 89 78.00000 0.59630 99.2% - 0s 0 0 0.60906 0 91 78.00000 0.60906 99.2% - 0s H 0 0 76.0000000 0.60906 99.2% - 0s 0 0 0.64850 0 111 76.00000 0.64850 99.1% - 0s H 0 0 68.0000000 0.64850 99.0% - 0s 0 2 0.64859 0 111 68.00000 0.64859 99.0% - 0s H 54 54 50.0000000 4.00683 92.0% 25.8 0s * 62 54 31 49.0000000 4.00683 91.8% 23.2 0s * 105 80 26 47.0000000 4.04986 91.4% 23.2 0s * 205 132 24 43.0000000 7.40183 82.8% 26.4 0s 4914 1166 41.86567 26 139 43.00000 28.59091 33.5% 19.3 5s 10735 1668 39.64615 26 136 43.00000 33.00000 23.3% 17.6 10s 17670 1380 38.43750 25 133 43.00000 35.93750 16.4% 17.0 15s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 23313 nodes (385775 simplex iterations) in 18.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%