Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:17:06 2012 Optimize a model with 443 rows, 309 columns and 1414 nonzeros Presolve time: 0.00s Presolved: 443 rows, 309 columns, 1414 nonzeros Variable types: 0 continuous, 309 integer (309 binary) Found heuristic solution: objective 93.0000000 Root relaxation: objective 0.000000e+00, 130 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 93.00000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s 0 0 0.83510 0 91 89.00000 0.83510 99.1% - 0s H 0 0 81.0000000 0.83510 99.0% - 0s 0 0 0.84973 0 99 81.00000 0.84973 99.0% - 0s 0 0 0.87075 0 96 81.00000 0.87075 98.9% - 0s 0 2 0.87762 0 96 81.00000 0.87762 98.9% - 0s H 27 27 76.0000000 3.65934 95.2% 36.7 0s * 55 55 30 61.0000000 3.65934 94.0% 25.9 0s * 57 49 29 60.0000000 3.65934 93.9% 25.1 0s H 81 69 57.0000000 3.68981 93.5% 26.7 0s * 136 96 22 50.0000000 7.24534 85.5% 25.8 0s * 214 158 26 48.0000000 7.28755 84.8% 27.2 0s * 862 455 27 47.0000000 15.74000 66.5% 26.6 1s * 1199 472 28 46.0000000 18.04054 60.8% 26.0 1s 3706 911 30.48101 17 134 46.00000 25.07143 45.5% 24.9 5s * 5615 1192 27 45.0000000 29.00000 35.6% 24.1 7s 8591 1362 41.52941 21 142 45.00000 31.24324 30.6% 23.6 10s 14477 1195 38.23077 19 144 45.00000 34.12963 24.2% 22.8 15s Cutting planes: Gomory: 1 Mod-K: 3 Explored 20753 nodes (458582 simplex iterations) in 19.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%