Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:17:26 2012 Optimize a model with 427 rows, 301 columns and 1366 nonzeros Presolve time: 0.00s Presolved: 427 rows, 301 columns, 1366 nonzeros Variable types: 0 continuous, 301 integer (301 binary) Found heuristic solution: objective 94.0000000 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 87 94.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.50602 0 88 75.00000 0.50602 99.3% - 0s H 0 0 74.0000000 0.50602 99.3% - 0s 0 0 1.00000 0 89 74.00000 1.00000 98.6% - 0s 0 0 1.43723 0 91 74.00000 1.43723 98.1% - 0s H 0 0 71.0000000 1.43723 98.0% - 0s 0 0 1.44561 0 92 71.00000 1.44561 98.0% - 0s 0 0 1.44561 0 92 71.00000 1.44561 98.0% - 0s H 0 0 65.0000000 1.44561 97.8% - 0s H 0 0 64.0000000 1.44561 97.7% - 0s 0 2 1.45196 0 92 64.00000 1.45196 97.7% - 0s * 48 48 25 57.0000000 4.42151 92.2% 37.5 0s * 76 51 16 46.0000000 4.48118 90.3% 38.1 0s * 90 48 22 45.0000000 4.48118 90.0% 33.5 0s 4066 960 43.14754 28 135 45.00000 29.12069 35.3% 25.7 5s 9752 1413 43.62857 27 150 45.00000 34.52542 23.3% 23.1 10s *11350 1348 36 44.0000000 35.44828 19.4% 22.8 11s 16541 829 42.52308 27 142 44.00000 38.00000 13.6% 22.0 15s Explored 19655 nodes (418937 simplex iterations) in 16.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%