Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:14:24 2013 Optimize a model with 904 rows, 13602 columns and 635726 nonzeros Presolve removed 2 rows and 3 columns Presolve time: 1.38s Presolved: 902 rows, 13599 columns, 635630 nonzeros Variable types: 0 continuous, 13599 integer (13599 binary) Found heuristic solution: objective 6949.0000000 Root relaxation: objective 5.189303e+03, 3516 iterations, 1.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5189.30303 0 73 6949.00000 5189.30303 25.3% - 2s H 0 0 5771.0000000 5189.30303 10.1% - 3s * 0 0 0 5202.0000000 5202.00000 0.0% - 4s Cutting planes: Clique: 1 Zero half: 23 Explored 0 nodes (4116 simplex iterations) in 4.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.202000000000e+03, best bound 5.202000000000e+03, gap 0.0%