Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:22 2012 Optimize a model with 730 rows, 55 columns and 1460 nonzeros Presolve removed 511 rows and 0 columns Presolve time: 0.01s Presolved: 219 rows, 55 columns, 1217 nonzeros Variable types: 0 continuous, 55 integer (55 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 9.948925e+00, 117 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9.94892 0 48 7.00000 9.94892 42.1% - 0s 0 0 9.50000 0 45 7.00000 9.50000 35.7% - 0s 0 0 9.50000 0 46 7.00000 9.50000 35.7% - 0s 0 0 9.50000 0 47 7.00000 9.50000 35.7% - 0s 0 0 9.50000 0 46 7.00000 9.50000 35.7% - 0s 0 2 9.50000 0 45 7.00000 9.50000 35.7% - 0s * 14 2 3 8.0000000 9.30565 16.3% 29.5 0s Cutting planes: Gomory: 1 Clique: 16 Zero half: 1 Explored 19 nodes (917 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%