Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:57:21 2012 Optimize a model with 762 rows, 123 columns and 1524 nonzeros Presolve removed 297 rows and 0 columns Presolve time: 0.00s Presolved: 465 rows, 123 columns, 1192 nonzeros Variable types: 0 continuous, 123 integer (123 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 4.181398e+01, 303 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.81398 0 122 33.00000 41.81398 26.7% - 0s 0 0 41.31888 0 123 33.00000 41.31888 25.2% - 0s 0 0 40.87290 0 123 33.00000 40.87290 23.9% - 0s 0 0 40.75130 0 123 33.00000 40.75130 23.5% - 0s 0 0 40.67572 0 123 33.00000 40.67572 23.3% - 0s 0 0 40.59153 0 122 33.00000 40.59153 23.0% - 0s 0 0 40.50362 0 123 33.00000 40.50362 22.7% - 0s 0 0 40.44915 0 123 33.00000 40.44915 22.6% - 0s 0 0 40.43044 0 121 33.00000 40.43044 22.5% - 0s 0 0 40.39139 0 122 33.00000 40.39139 22.4% - 0s 0 0 40.30916 0 122 33.00000 40.30916 22.1% - 0s 0 0 40.27962 0 123 33.00000 40.27962 22.1% - 0s 0 0 40.27055 0 123 33.00000 40.27055 22.0% - 0s 0 2 40.26767 0 123 33.00000 40.26767 22.0% - 0s * 6 6 4 35.0000000 40.13297 14.7% 82.2 0s Cutting planes: Clique: 2 Zero half: 52 Explored 379 nodes (15965 simplex iterations) in 0.74 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%