Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:37 2012 Optimize a model with 1037 rows, 64 columns and 2074 nonzeros Presolve removed 728 rows and 0 columns Presolve time: 0.02s Presolved: 309 rows, 64 columns, 1949 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.017715e+01, 146 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.17715 0 59 5.00000 10.17715 104% - 0s H 0 0 7.0000000 10.17715 45.4% - 0s 0 0 9.97293 0 61 7.00000 9.97293 42.5% - 0s 0 0 9.92732 0 61 7.00000 9.92732 41.8% - 0s 0 0 9.90234 0 62 7.00000 9.90234 41.5% - 0s 0 0 9.88747 0 62 7.00000 9.88747 41.2% - 0s 0 0 9.86413 0 62 7.00000 9.86413 40.9% - 0s 0 0 9.84856 0 61 7.00000 9.84856 40.7% - 0s 0 0 9.84483 0 62 7.00000 9.84483 40.6% - 0s 0 0 9.84220 0 62 7.00000 9.84220 40.6% - 0s H 0 0 8.0000000 9.84220 23.0% - 0s 0 2 9.83951 0 62 8.00000 9.83951 23.0% - 0s Cutting planes: Gomory: 1 Clique: 19 Zero half: 9 Explored 11 nodes (988 simplex iterations) in 0.19 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%