Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:34:08 2013 Optimize a model with 1243 rows, 27175 columns and 1276812 nonzeros Presolve removed 26 rows and 126 columns Presolve time: 1.83s Presolved: 1217 rows, 27049 columns, 1269364 nonzeros Variable types: 0 continuous, 27049 integer (27049 binary) Found heuristic solution: objective 13630.000000 Root relaxation: objective 9.914609e+03, 7415 iterations, 4.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9914.60870 0 161 13630.0000 9914.60870 27.3% - 6s H 0 0 10701.000000 9914.60870 7.35% - 7s 0 0 9920.50000 0 46 10701.0000 9920.50000 7.29% - 13s * 0 0 0 9922.0000000 9922.00000 0.0% - 14s Cutting planes: Clique: 3 Zero half: 2 Explored 0 nodes (9034 simplex iterations) in 14.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.922000000000e+03, best bound 9.922000000000e+03, gap 0.0%