Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:57:40 2012 Optimize a model with 341 rows, 225 columns and 1075 nonzeros Presolve time: 0.00s Presolved: 341 rows, 225 columns, 1075 nonzeros Variable types: 0 continuous, 225 integer (225 binary) Found heuristic solution: objective 68.0000000 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 55 68.00000 0.00000 100% - 0s 0 0 0.87081 0 57 68.00000 0.87081 98.7% - 0s 0 0 0.87888 0 57 68.00000 0.87888 98.7% - 0s 0 0 0.88960 0 57 68.00000 0.88960 98.7% - 0s 0 0 1.04896 0 63 68.00000 1.04896 98.5% - 0s 0 0 1.05977 0 66 68.00000 1.05977 98.4% - 0s 0 0 1.07218 0 73 68.00000 1.07218 98.4% - 0s 0 0 1.08295 0 74 68.00000 1.08295 98.4% - 0s 0 0 1.09506 0 81 68.00000 1.09506 98.4% - 0s H 0 0 67.0000000 1.09506 98.4% - 0s 0 2 1.12312 0 81 67.00000 1.12312 98.3% - 0s * 34 34 23 62.0000000 5.99757 90.3% 27.2 0s * 61 45 17 47.0000000 6.15439 86.9% 25.7 0s * 65 40 18 46.0000000 6.15439 86.6% 24.4 0s * 225 118 13 44.0000000 14.56000 66.9% 21.4 0s Explored 5900 nodes (115781 simplex iterations) in 4.24 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%