Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:46:46 2013 Optimize a model with 1262 rows, 30780 columns and 1306825 nonzeros Presolve removed 44 rows and 263 columns Presolve time: 4.53s Presolved: 1218 rows, 30517 columns, 1293962 nonzeros Variable types: 0 continuous, 30517 integer (30517 binary) Found heuristic solution: objective 15259.000000 Root relaxation: objective 1.020971e+04, 7808 iterations, 3.93 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10209.7059 0 91 15259.0000 10209.7059 33.1% - 9s H 0 0 10927.000000 10209.7059 6.56% - 9s * 0 0 0 10211.000000 10211.0000 0.0% - 15s Cutting planes: Clique: 9 Zero half: 18 Explored 0 nodes (9400 simplex iterations) in 15.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.021100000000e+04, best bound 1.021100000000e+04, gap 0.0%