Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:01 2012 Optimize a model with 6539 rows, 930 columns and 20398 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 6537 rows, 928 columns, 23755 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.600000e+00, 6726 iterations, 0.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.60000 0 733 30.00000 3.60000 88.0% - 1s H 0 0 28.0000000 3.60000 87.1% - 1s 0 0 7.00000 0 94 28.00000 7.00000 75.0% - 1s H 0 0 23.0000000 7.00000 69.6% - 1s H 0 0 10.0000000 7.00000 30.0% - 1s H 0 0 8.0000000 7.00000 12.5% - 1s * 0 0 0 7.0000000 7.00000 0.0% - 1s Cutting planes: Gomory: 1 Clique: 23 Zero half: 53 Explored 0 nodes (11467 simplex iterations) in 1.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%