Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:58 2012 Optimize a model with 1263 rows, 72 columns and 2526 nonzeros Presolve removed 883 rows and 0 columns Presolve time: 0.02s Presolved: 380 rows, 72 columns, 2334 nonzeros Variable types: 0 continuous, 72 integer (72 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.147886e+01, 296 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.47886 0 64 7.00000 11.47886 64.0% - 0s H 0 0 8.0000000 11.47886 43.5% - 0s H 0 0 9.0000000 11.47886 27.5% - 0s 0 0 11.16636 0 68 9.00000 11.16636 24.1% - 0s 0 0 11.10749 0 70 9.00000 11.10749 23.4% - 0s 0 0 11.09813 0 67 9.00000 11.09813 23.3% - 0s 0 0 11.07901 0 69 9.00000 11.07901 23.1% - 0s 0 0 11.07452 0 68 9.00000 11.07452 23.1% - 0s 0 0 11.07376 0 68 9.00000 11.07376 23.0% - 0s 0 0 11.07044 0 69 9.00000 11.07044 23.0% - 0s 0 0 11.07029 0 69 9.00000 11.07029 23.0% - 0s 0 0 11.05123 0 69 9.00000 11.05123 22.8% - 0s 0 0 11.04333 0 68 9.00000 11.04333 22.7% - 0s 0 0 11.03785 0 70 9.00000 11.03785 22.6% - 0s 0 0 11.02672 0 70 9.00000 11.02672 22.5% - 0s 0 0 11.02565 0 70 9.00000 11.02565 22.5% - 0s 0 0 11.02490 0 70 9.00000 11.02490 22.5% - 0s 0 2 11.02359 0 70 9.00000 11.02359 22.5% - 0s Cutting planes: Clique: 33 Zero half: 4 Explored 17 nodes (1271 simplex iterations) in 0.42 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%