Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:27:49 2013 Optimize a model with 1300 rows, 26958 columns and 1379185 nonzeros Presolve removed 16 rows and 10 columns Presolve time: 1.60s Presolved: 1284 rows, 26948 columns, 1378969 nonzeros Variable types: 0 continuous, 26948 integer (26948 binary) Found heuristic solution: objective 12306.000000 Root relaxation: objective 9.812600e+03, 7533 iterations, 4.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9812.60000 0 106 12306.0000 9812.60000 20.3% - 7s H 0 0 10004.000000 9812.60000 1.91% - 8s * 0 0 0 9839.0000000 9839.00000 0.0% - 10s Cutting planes: Clique: 13 Zero half: 48 Explored 0 nodes (8572 simplex iterations) in 10.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.838999999999e+03, best bound 9.838999999999e+03, gap 0.0%