Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:36 2012 Optimize a model with 2683 rows, 104 columns and 5366 nonzeros Presolve removed 1927 rows and 0 columns Presolve time: 0.09s Presolved: 756 rows, 104 columns, 5230 nonzeros Variable types: 0 continuous, 104 integer (104 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.407904e+01, 393 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.07904 0 100 6.00000 14.07904 135% - 0s H 0 0 7.0000000 14.07904 101% - 0s H 0 0 9.0000000 14.07904 56.4% - 0s 0 0 13.89281 0 102 9.00000 13.89281 54.4% - 0s 0 0 13.85775 0 102 9.00000 13.85775 54.0% - 0s 0 0 13.82300 0 104 9.00000 13.82300 53.6% - 0s 0 0 13.79837 0 103 9.00000 13.79837 53.3% - 0s 0 0 13.78560 0 103 9.00000 13.78560 53.2% - 0s 0 0 13.77926 0 103 9.00000 13.77926 53.1% - 0s 0 0 13.77845 0 103 9.00000 13.77845 53.1% - 0s 0 2 13.77597 0 103 9.00000 13.77597 53.1% - 1s Cutting planes: Clique: 43 Zero half: 4 Explored 195 nodes (13288 simplex iterations) in 1.80 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%