Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:04:26 2012 Optimize a model with 453 rows, 323 columns and 1453 nonzeros Presolve time: 0.00s Presolved: 453 rows, 323 columns, 1453 nonzeros Variable types: 0 continuous, 323 integer (323 binary) Found heuristic solution: objective 92.0000000 Root relaxation: objective 0.000000e+00, 145 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 97 92.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.62173 0 98 76.00000 0.62173 99.2% - 0s 0 0 1.00424 0 99 76.00000 1.00424 98.7% - 0s 0 0 1.21280 0 101 76.00000 1.21280 98.4% - 0s 0 0 1.31960 0 102 76.00000 1.31960 98.3% - 0s 0 0 1.38057 0 101 76.00000 1.38057 98.2% - 0s 0 0 1.39787 0 102 76.00000 1.39787 98.2% - 0s H 0 0 65.0000000 1.39787 97.8% - 0s 0 2 1.41573 0 102 65.00000 1.41573 97.8% - 0s * 55 51 28 50.0000000 3.67378 92.7% 35.3 0s * 128 94 17 49.0000000 5.81197 88.1% 34.5 0s * 207 152 20 47.0000000 5.81233 87.6% 37.1 0s * 487 305 20 46.0000000 11.00000 76.1% 37.8 0s * 1782 420 30 45.0000000 25.50000 43.3% 30.5 2s H 2393 530 44.0000000 28.15000 36.0% 28.5 3s 3942 642 34.50000 17 149 44.00000 31.96923 27.3% 26.1 5s * 6305 583 23 43.0000000 34.80702 19.1% 24.3 7s Explored 9047 nodes (205983 simplex iterations) in 9.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%