Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:27 2012 Optimize a model with 1854 rows, 87 columns and 3708 nonzeros Presolve removed 1294 rows and 0 columns Presolve time: 0.04s Presolved: 560 rows, 87 columns, 3573 nonzeros Variable types: 0 continuous, 87 integer (87 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.286661e+01, 362 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.86661 0 84 7.00000 12.86661 83.8% - 0s H 0 0 8.0000000 12.86661 60.8% - 0s 0 0 12.67537 0 87 8.00000 12.67537 58.4% - 0s 0 0 12.63170 0 86 8.00000 12.63170 57.9% - 0s 0 0 12.61764 0 85 8.00000 12.61764 57.7% - 0s H 0 0 10.0000000 12.61764 26.2% - 0s 0 0 12.61219 0 84 10.00000 12.61219 26.1% - 0s 0 0 12.60842 0 87 10.00000 12.60842 26.1% - 0s 0 0 12.60225 0 87 10.00000 12.60225 26.0% - 0s 0 0 12.59401 0 87 10.00000 12.59401 25.9% - 0s 0 0 12.58810 0 85 10.00000 12.58810 25.9% - 0s 0 0 12.58551 0 87 10.00000 12.58551 25.9% - 0s 0 0 12.57967 0 87 10.00000 12.57967 25.8% - 0s 0 0 12.57524 0 87 10.00000 12.57524 25.8% - 0s 0 0 12.57323 0 87 10.00000 12.57323 25.7% - 0s 0 0 12.57098 0 87 10.00000 12.57098 25.7% - 0s 0 0 12.56849 0 87 10.00000 12.56849 25.7% - 0s 0 2 12.56764 0 87 10.00000 12.56764 25.7% - 0s Cutting planes: Gomory: 1 Clique: 22 Zero half: 14 Explored 27 nodes (3006 simplex iterations) in 0.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%