Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:29 2012 Optimize a model with 3509 rows, 119 columns and 7018 nonzeros Presolve removed 2540 rows and 0 columns Presolve time: 0.11s Presolved: 969 rows, 119 columns, 6743 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.608712e+01, 540 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.08712 0 113 8.00000 16.08712 101% - 0s 0 0 15.72902 0 116 8.00000 15.72902 96.6% - 0s 0 0 15.57830 0 118 8.00000 15.57830 94.7% - 0s 0 0 15.48010 0 118 8.00000 15.48010 93.5% - 0s 0 0 15.45746 0 118 8.00000 15.45746 93.2% - 0s H 0 0 9.0000000 15.45746 71.7% - 0s 0 0 15.45454 0 118 9.00000 15.45454 71.7% - 0s 0 0 15.43711 0 118 9.00000 15.43711 71.5% - 1s 0 0 15.43534 0 118 9.00000 15.43534 71.5% - 1s 0 0 15.43457 0 118 9.00000 15.43457 71.5% - 1s 0 0 15.43457 0 118 9.00000 15.43457 71.5% - 1s 0 2 15.43400 0 118 9.00000 15.43400 71.5% - 1s Cutting planes: Clique: 115 Explored 627 nodes (36728 simplex iterations) in 4.28 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%