Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:05 2012 Optimize a model with 1308 rows, 73 columns and 2616 nonzeros Presolve removed 932 rows and 0 columns Presolve time: 0.03s Presolved: 376 rows, 73 columns, 2343 nonzeros Variable types: 0 continuous, 73 integer (73 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.147815e+01, 264 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.47815 0 69 5.00000 11.47815 130% - 0s H 0 0 8.0000000 11.47815 43.5% - 0s 0 0 11.20656 0 72 8.00000 11.20656 40.1% - 0s 0 0 11.17368 0 72 8.00000 11.17368 39.7% - 0s 0 0 11.15515 0 69 8.00000 11.15515 39.4% - 0s 0 0 11.11334 0 72 8.00000 11.11334 38.9% - 0s 0 0 11.08863 0 72 8.00000 11.08863 38.6% - 0s 0 0 11.08169 0 72 8.00000 11.08169 38.5% - 0s 0 0 11.07687 0 72 8.00000 11.07687 38.5% - 0s 0 0 11.07593 0 72 8.00000 11.07593 38.4% - 0s 0 0 11.07579 0 72 8.00000 11.07579 38.4% - 0s 0 2 11.07579 0 72 8.00000 11.07579 38.4% - 0s Cutting planes: Clique: 33 Zero half: 4 Explored 57 nodes (2885 simplex iterations) in 0.39 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%