Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:36 2012 Optimize a model with 1019 rows, 64 columns and 2038 nonzeros Presolve removed 717 rows and 0 columns Presolve time: 0.02s Presolved: 302 rows, 64 columns, 1823 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.147817e+01, 128 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.47817 0 52 7.00000 11.47817 64.0% - 0s 0 0 10.59479 0 59 7.00000 10.59479 51.4% - 0s 0 0 10.53499 0 58 7.00000 10.53499 50.5% - 0s H 0 0 9.0000000 10.53499 17.1% - 0s 0 0 10.50489 0 56 9.00000 10.50489 16.7% - 0s 0 0 10.49344 0 60 9.00000 10.49344 16.6% - 0s 0 0 10.47998 0 59 9.00000 10.47998 16.4% - 0s 0 0 10.47902 0 61 9.00000 10.47902 16.4% - 0s 0 0 10.47854 0 60 9.00000 10.47854 16.4% - 0s 0 0 10.47774 0 61 9.00000 10.47774 16.4% - 0s 0 2 10.47733 0 61 9.00000 10.47733 16.4% - 0s Cutting planes: Clique: 30 Zero half: 4 Explored 7 nodes (497 simplex iterations) in 0.16 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%