Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:12 2012 Optimize a model with 491 rows, 98 columns and 982 nonzeros Presolve removed 159 rows and 0 columns Presolve time: 0.00s Presolved: 332 rows, 98 columns, 816 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.568966e+01, 203 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.68966 0 96 26.00000 35.68966 37.3% - 0s H 0 0 27.0000000 35.68966 32.2% - 0s 0 0 34.99251 0 98 27.00000 34.99251 29.6% - 0s H 0 0 28.0000000 34.99251 25.0% - 0s 0 0 34.94231 0 97 28.00000 34.94231 24.8% - 0s 0 0 34.63518 0 97 28.00000 34.63518 23.7% - 0s H 0 0 30.0000000 34.63518 15.5% - 0s 0 0 34.30204 0 96 30.00000 34.30204 14.3% - 0s 0 0 34.26806 0 96 30.00000 34.26806 14.2% - 0s 0 0 34.22675 0 97 30.00000 34.22675 14.1% - 0s 0 0 34.17969 0 96 30.00000 34.17969 13.9% - 0s 0 0 34.12467 0 97 30.00000 34.12467 13.7% - 0s 0 0 34.02544 0 96 30.00000 34.02544 13.4% - 0s 0 0 33.97999 0 96 30.00000 33.97999 13.3% - 0s 0 0 33.95728 0 97 30.00000 33.95728 13.2% - 0s 0 0 33.91883 0 97 30.00000 33.91883 13.1% - 0s 0 0 33.87736 0 95 30.00000 33.87736 12.9% - 0s 0 0 33.84499 0 95 30.00000 33.84499 12.8% - 0s 0 0 33.82924 0 96 30.00000 33.82924 12.8% - 0s 0 0 33.82924 0 96 30.00000 33.82924 12.8% - 0s 0 2 33.82872 0 96 30.00000 33.82872 12.8% - 0s Cutting planes: Clique: 2 Zero half: 62 Explored 140 nodes (4742 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%