Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:30:04 2012 Optimize a model with 323 rows, 237 columns and 1042 nonzeros Presolve time: 0.00s Presolved: 323 rows, 237 columns, 1042 nonzeros Variable types: 0 continuous, 237 integer (237 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 115 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 75 76.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.60844 0 76 56.00000 0.60844 98.9% - 0s H 0 0 54.0000000 0.60844 98.9% - 0s 0 0 1.05714 0 78 54.00000 1.05714 98.0% - 0s H 0 0 49.0000000 1.05714 97.8% - 0s 0 0 1.09759 0 78 49.00000 1.09759 97.8% - 0s H 0 0 48.0000000 1.09759 97.7% - 0s 0 0 1.11429 0 79 48.00000 1.11429 97.7% - 0s 0 0 1.12775 0 78 48.00000 1.12775 97.7% - 0s 0 0 1.15952 0 79 48.00000 1.15952 97.6% - 0s 0 0 1.18810 0 79 48.00000 1.18810 97.5% - 0s 0 0 1.20881 0 81 48.00000 1.20881 97.5% - 0s 0 0 1.29472 0 81 48.00000 1.29472 97.3% - 0s 0 0 1.32808 0 82 48.00000 1.32808 97.2% - 0s 0 0 1.34529 0 83 48.00000 1.34529 97.2% - 0s 0 2 1.38797 0 83 48.00000 1.38797 97.1% - 0s * 39 30 24 33.0000000 5.76056 82.5% 24.1 0s * 597 191 15 32.0000000 17.81818 44.3% 18.7 0s H 608 187 31.0000000 17.81818 42.5% 18.5 0s Explored 4490 nodes (86729 simplex iterations) in 3.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%