Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:35 2012 Optimize a model with 1011 rows, 63 columns and 2022 nonzeros Presolve removed 694 rows and 0 columns Presolve time: 0.01s Presolved: 317 rows, 63 columns, 1985 nonzeros Variable types: 0 continuous, 63 integer (63 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.041608e+01, 245 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.41608 0 59 7.00000 10.41608 48.8% - 0s 0 0 10.07909 0 60 7.00000 10.07909 44.0% - 0s 0 0 10.01081 0 60 7.00000 10.01081 43.0% - 0s 0 0 9.97403 0 60 7.00000 9.97403 42.5% - 0s H 0 0 8.0000000 9.97403 24.7% - 0s 0 0 9.96388 0 61 8.00000 9.96388 24.5% - 0s 0 0 9.96108 0 61 8.00000 9.96108 24.5% - 0s 0 0 9.95726 0 61 8.00000 9.95726 24.5% - 0s 0 0 9.95575 0 60 8.00000 9.95575 24.4% - 0s 0 0 9.95568 0 61 8.00000 9.95568 24.4% - 0s 0 2 9.94716 0 61 8.00000 9.94716 24.3% - 0s Cutting planes: Clique: 30 Zero half: 3 Explored 11 nodes (896 simplex iterations) in 0.20 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%