Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:52 2012 Optimize a model with 2695 rows, 104 columns and 5390 nonzeros Presolve removed 1937 rows and 0 columns Presolve time: 0.08s Presolved: 758 rows, 104 columns, 5198 nonzeros Variable types: 0 continuous, 104 integer (104 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.459534e+01, 420 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.59534 0 99 6.00000 14.59534 143% - 0s H 0 0 8.0000000 14.59534 82.4% - 0s 0 0 13.93161 0 103 8.00000 13.93161 74.1% - 0s 0 0 13.88029 0 101 8.00000 13.88029 73.5% - 0s 0 0 13.77513 0 102 8.00000 13.77513 72.2% - 0s H 0 0 9.0000000 13.77513 53.1% - 0s 0 0 13.72430 0 103 9.00000 13.72430 52.5% - 0s 0 0 13.71057 0 104 9.00000 13.71057 52.3% - 0s 0 0 13.70676 0 103 9.00000 13.70676 52.3% - 0s 0 0 13.70105 0 103 9.00000 13.70105 52.2% - 0s 0 0 13.69893 0 104 9.00000 13.69893 52.2% - 1s 0 0 13.69728 0 104 9.00000 13.69728 52.2% - 1s 0 0 13.69654 0 104 9.00000 13.69654 52.2% - 1s 0 2 13.69316 0 104 9.00000 13.69316 52.1% - 1s Cutting planes: Clique: 115 Explored 184 nodes (12984 simplex iterations) in 2.14 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%