Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:07 2012 Optimize a model with 1331 rows, 74 columns and 2662 nonzeros Presolve removed 927 rows and 0 columns Presolve time: 0.03s Presolved: 404 rows, 74 columns, 2479 nonzeros Variable types: 0 continuous, 74 integer (74 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 1.184717e+01, 277 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.84717 0 69 9.00000 11.84717 31.6% - 0s 0 0 11.56242 0 69 9.00000 11.56242 28.5% - 0s 0 0 11.48652 0 69 9.00000 11.48652 27.6% - 0s 0 0 11.45658 0 71 9.00000 11.45658 27.3% - 0s 0 0 11.44591 0 71 9.00000 11.44591 27.2% - 0s 0 0 11.43058 0 69 9.00000 11.43058 27.0% - 0s 0 0 11.42183 0 71 9.00000 11.42183 26.9% - 0s 0 0 11.41761 0 72 9.00000 11.41761 26.9% - 0s 0 0 11.41617 0 72 9.00000 11.41617 26.8% - 0s 0 0 11.41614 0 72 9.00000 11.41614 26.8% - 0s 0 2 11.41490 0 72 9.00000 11.41490 26.8% - 0s Cutting planes: Clique: 29 Zero half: 5 Explored 23 nodes (1496 simplex iterations) in 0.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%