Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:19:24 2012 Optimize a model with 365 rows, 271 columns and 1181 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 365 rows, 270 columns, 1180 nonzeros Variable types: 0 continuous, 270 integer (269 binary) Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 116 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 84.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.49425 0 88 60.00000 0.49425 99.2% - 0s 0 0 1.00000 0 89 60.00000 1.00000 98.3% - 0s 0 0 1.31631 0 89 60.00000 1.31631 97.8% - 0s 0 0 1.35879 0 91 60.00000 1.35879 97.7% - 0s 0 0 1.37620 0 91 60.00000 1.37620 97.7% - 0s H 0 0 59.0000000 1.37620 97.7% - 0s 0 0 1.38058 0 92 59.00000 1.38058 97.7% - 0s H 0 0 56.0000000 1.38058 97.5% - 0s H 0 0 46.0000000 1.38058 97.0% - 0s H 0 0 40.0000000 1.38058 96.5% - 0s 0 2 1.38488 0 92 40.00000 1.38488 96.5% - 0s H 27 27 39.0000000 3.25979 91.6% 40.6 0s * 30 30 16 32.0000000 3.25979 89.8% 39.6 0s * 58 46 17 31.0000000 3.34892 89.2% 39.5 0s Explored 5188 nodes (112679 simplex iterations) in 4.74 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%