Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:59 2013 Optimize a model with 414 rows, 2323 columns and 99651 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.27s Presolved: 412 rows, 2321 columns, 99790 nonzeros Variable types: 0 continuous, 2321 integer (2321 binary) Found heuristic solution: objective 1316.0000000 Found heuristic solution: objective 1294.0000000 Root relaxation: objective 9.834000e+02, 420 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 983.40000 0 26 1294.00000 983.40000 24.0% - 0s * 0 0 0 1013.0000000 1013.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 2 Zero half: 2 Explored 0 nodes (477 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.013000000000e+03, best bound 1.013000000000e+03, gap 0.0%