Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:17:48 2012 Optimize a model with 365 rows, 270 columns and 1180 nonzeros Presolve time: 0.00s Presolved: 365 rows, 270 columns, 1180 nonzeros Variable types: 0 continuous, 270 integer (270 binary) Found heuristic solution: objective 92.0000000 Found heuristic solution: objective 79.0000000 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 79.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s 0 0 0.66667 0 90 72.00000 0.66667 99.1% - 0s H 0 0 66.0000000 0.66667 99.0% - 0s 0 0 0.73810 0 90 66.00000 0.73810 98.9% - 0s H 0 0 63.0000000 0.73810 98.8% - 0s 0 0 0.75000 0 90 63.00000 0.75000 98.8% - 0s H 0 0 61.0000000 0.75000 98.8% - 0s 0 0 0.80408 0 94 61.00000 0.80408 98.7% - 0s 0 0 0.81244 0 90 61.00000 0.81244 98.7% - 0s H 0 0 59.0000000 0.81244 98.6% - 0s 0 0 0.81244 0 90 59.00000 0.81244 98.6% - 0s 0 0 0.81244 0 90 59.00000 0.81244 98.6% - 0s H 0 0 58.0000000 0.81244 98.6% - 0s H 0 0 56.0000000 0.81244 98.5% - 0s 0 2 0.81659 0 90 56.00000 0.81659 98.5% - 0s * 36 33 22 37.0000000 3.95238 89.3% 29.4 0s * 66 53 18 35.0000000 4.27381 87.8% 25.6 0s * 240 153 21 34.0000000 13.12727 61.4% 23.5 0s H 869 346 33.0000000 16.69231 49.4% 26.7 1s * 871 329 30 32.0000000 16.69231 47.8% 26.7 1s * 1321 305 28 31.0000000 16.69231 46.2% 26.7 1s 5172 321 27.23529 24 113 31.00000 22.34375 27.9% 25.0 5s Explored 6807 nodes (162650 simplex iterations) in 6.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%