Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:52 2012 Optimize a model with 616 rows, 106 columns and 1232 nonzeros Presolve removed 246 rows and 0 columns Presolve time: 0.00s Presolved: 370 rows, 106 columns, 957 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 3.587302e+01, 276 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35.87302 0 103 24.00000 35.87302 49.5% - 0s 0 0 35.40122 0 102 24.00000 35.40122 47.5% - 0s H 0 0 25.0000000 35.40122 41.6% - 0s 0 0 35.29670 0 104 25.00000 35.29670 41.2% - 0s H 0 0 26.0000000 35.29670 35.8% - 0s 0 0 35.18657 0 103 26.00000 35.18657 35.3% - 0s 0 0 35.08554 0 106 26.00000 35.08554 34.9% - 0s 0 0 34.85116 0 105 26.00000 34.85116 34.0% - 0s 0 0 34.73291 0 104 26.00000 34.73291 33.6% - 0s 0 0 34.59710 0 105 26.00000 34.59710 33.1% - 0s 0 0 34.54656 0 103 26.00000 34.54656 32.9% - 0s 0 0 34.46107 0 103 26.00000 34.46107 32.5% - 0s 0 0 34.42144 0 105 26.00000 34.42144 32.4% - 0s 0 0 34.38902 0 103 26.00000 34.38902 32.3% - 0s H 0 0 27.0000000 34.38902 27.4% - 0s 0 0 34.33136 0 106 27.00000 34.33136 27.2% - 0s 0 0 34.32819 0 106 27.00000 34.32819 27.1% - 0s 0 0 34.32819 0 106 27.00000 34.32819 27.1% - 0s 0 2 34.32764 0 106 27.00000 34.32764 27.1% - 0s * 10 10 7 28.0000000 34.24151 22.3% 47.5 0s * 585 114 15 29.0000000 31.79000 9.62% 22.0 0s Cutting planes: Clique: 5 Zero half: 49 Explored 882 nodes (19095 simplex iterations) in 0.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%