Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:40 2012 Optimize a model with 1056 rows, 66 columns and 2112 nonzeros Presolve removed 733 rows and 0 columns Presolve time: 0.02s Presolved: 323 rows, 66 columns, 1915 nonzeros Variable types: 0 continuous, 66 integer (66 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.088814e+01, 169 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.88814 0 60 7.00000 10.88814 55.5% - 0s 0 0 10.54309 0 64 7.00000 10.54309 50.6% - 0s 0 0 10.50056 0 62 7.00000 10.50056 50.0% - 0s H 0 0 8.0000000 10.50056 31.3% - 0s 0 0 10.46944 0 63 8.00000 10.46944 30.9% - 0s 0 0 10.43868 0 63 8.00000 10.43868 30.5% - 0s 0 0 10.43753 0 63 8.00000 10.43753 30.5% - 0s 0 0 10.43230 0 63 8.00000 10.43230 30.4% - 0s 0 0 10.42222 0 63 8.00000 10.42222 30.3% - 0s 0 0 10.41902 0 62 8.00000 10.41902 30.2% - 0s 0 0 10.41900 0 63 8.00000 10.41900 30.2% - 0s 0 2 10.41579 0 63 8.00000 10.41579 30.2% - 0s Cutting planes: Clique: 29 Zero half: 4 Explored 23 nodes (1327 simplex iterations) in 0.26 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%