Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:37:42 2012 Optimize a model with 1080 rows, 142 columns and 2160 nonzeros Presolve removed 452 rows and 0 columns Presolve time: 0.01s Presolved: 628 rows, 142 columns, 1711 nonzeros Variable types: 0 continuous, 142 integer (142 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 4.543306e+01, 441 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.43306 0 140 32.00000 45.43306 42.0% - 0s 0 0 45.16854 0 141 32.00000 45.16854 41.2% - 0s 0 0 45.05853 0 141 32.00000 45.05853 40.8% - 0s 0 0 44.97701 0 140 32.00000 44.97701 40.6% - 0s 0 0 44.87444 0 141 32.00000 44.87444 40.2% - 0s 0 0 44.82312 0 140 32.00000 44.82312 40.1% - 0s 0 0 44.72197 0 141 32.00000 44.72197 39.8% - 0s 0 0 44.58277 0 140 32.00000 44.58277 39.3% - 0s 0 0 44.52879 0 140 32.00000 44.52879 39.2% - 0s 0 0 44.51798 0 140 32.00000 44.51798 39.1% - 0s 0 0 44.51756 0 140 32.00000 44.51756 39.1% - 0s 0 0 44.51756 0 140 32.00000 44.51756 39.1% - 0s 0 2 44.51072 0 140 32.00000 44.51072 39.1% - 0s * 69 36 10 34.0000000 43.64723 28.4% 63.1 0s H 273 89 35.0000000 42.43299 21.2% 49.2 0s 2103 587 cutoff 32 35.00000 39.88976 14.0% 43.5 5s 5861 76 cutoff 32 35.00000 36.48649 4.25% 34.0 10s Explored 5962 nodes (201505 simplex iterations) in 10.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%