Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:38:02 2013 Optimize a model with 1256 rows, 28585 columns and 1310386 nonzeros Presolve removed 23 rows and 141 columns Presolve time: 3.54s Presolved: 1233 rows, 28444 columns, 1302132 nonzeros Variable types: 0 continuous, 28444 integer (28444 binary) Found heuristic solution: objective 14298.000000 Root relaxation: objective 1.013574e+04, 6750 iterations, 3.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10135.7419 0 96 14298.0000 10135.7419 29.1% - 7s H 0 0 10432.000000 10135.7419 2.84% - 8s 0 0 10143.6598 0 158 10432.0000 10143.6598 2.76% - 15s 0 0 10143.6598 0 115 10432.0000 10143.6598 2.76% - 23s 0 0 10143.9103 0 179 10432.0000 10143.9103 2.76% - 26s H 0 0 10160.000000 10143.9103 0.16% - 27s 0 0 10150.6364 0 173 10160.0000 10150.6364 0.09% - 28s 0 1 10150.6867 0 121 10160.0000 10150.6867 0.09% - 33s Cutting planes: Clique: 11 Zero half: 1 Explored 1 nodes (19310 simplex iterations) in 40.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.016000000000e+04, best bound 1.016000000000e+04, gap 0.0%