Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:00:20 2012 Optimize a model with 429 rows, 281 columns and 1351 nonzeros Presolve time: 0.00s Presolved: 429 rows, 281 columns, 1351 nonzeros Variable types: 0 continuous, 281 integer (281 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 99 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 67 91.00000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s H 0 0 85.0000000 0.00000 100% - 0s 0 0 0.73711 0 69 85.00000 0.73711 99.1% - 0s H 0 0 83.0000000 0.73711 99.1% - 0s 0 0 0.77869 0 69 83.00000 0.77869 99.1% - 0s H 0 0 80.0000000 0.77869 99.0% - 0s 0 0 0.80494 0 69 80.00000 0.80494 99.0% - 0s 0 0 0.81369 0 69 80.00000 0.81369 99.0% - 0s 0 0 0.82244 0 69 80.00000 0.82244 99.0% - 0s 0 0 0.82244 0 69 80.00000 0.82244 99.0% - 0s 0 2 0.88438 0 69 80.00000 0.88438 98.9% - 0s * 41 41 22 65.0000000 5.09867 92.2% 31.7 0s * 47 41 25 64.0000000 5.09867 92.0% 30.8 0s * 216 168 23 63.0000000 7.66502 87.8% 29.0 0s * 295 238 27 62.0000000 13.50723 78.2% 29.6 0s * 353 275 22 61.0000000 13.52586 77.8% 29.6 0s * 769 452 34 60.0000000 15.82543 73.6% 29.7 1s * 901 458 31 58.0000000 17.21053 70.3% 29.9 1s H 989 413 55.0000000 20.52381 62.7% 29.5 1s 4433 831 48.92453 24 137 55.00000 35.97778 34.6% 26.5 5s * 8270 1067 30 54.0000000 41.04000 24.0% 24.7 8s 10553 986 49.79245 24 137 54.00000 43.00000 20.4% 24.0 10s Explored 17262 nodes (386161 simplex iterations) in 14.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0%