Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:48 2012 Optimize a model with 2355 rows, 98 columns and 4710 nonzeros Presolve removed 1653 rows and 0 columns Presolve time: 0.08s Presolved: 702 rows, 98 columns, 4648 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.411082e+01, 361 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.11082 0 90 7.00000 14.11082 102% - 0s H 0 0 8.0000000 14.11082 76.4% - 0s 0 0 13.80314 0 97 8.00000 13.80314 72.5% - 0s H 0 0 9.0000000 13.80314 53.4% - 0s 0 0 13.74364 0 96 9.00000 13.74364 52.7% - 0s 0 0 13.71070 0 97 9.00000 13.71070 52.3% - 0s 0 0 13.70155 0 97 9.00000 13.70155 52.2% - 0s 0 0 13.70083 0 97 9.00000 13.70083 52.2% - 0s 0 2 13.70005 0 97 9.00000 13.70005 52.2% - 0s Cutting planes: Clique: 49 Zero half: 4 Explored 178 nodes (10457 simplex iterations) in 1.28 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%