Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:52:25 2012 Optimize a model with 3064 rows, 110 columns and 6128 nonzeros Presolve removed 2168 rows and 0 columns Presolve time: 0.11s Presolved: 896 rows, 110 columns, 6283 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.476699e+01, 394 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.76699 0 106 6.00000 14.76699 146% - 0s H 0 0 8.0000000 14.76699 84.6% - 0s 0 0 14.52107 0 109 8.00000 14.52107 81.5% - 0s 0 0 14.49985 0 110 8.00000 14.49985 81.2% - 0s 0 0 14.44092 0 110 8.00000 14.44092 80.5% - 0s 0 0 14.39801 0 110 8.00000 14.39801 80.0% - 0s 0 0 14.38797 0 110 8.00000 14.38797 79.8% - 0s 0 0 14.38606 0 109 8.00000 14.38606 79.8% - 0s 0 0 14.38538 0 109 8.00000 14.38538 79.8% - 1s 0 0 14.38521 0 109 8.00000 14.38521 79.8% - 1s 0 2 14.38503 0 109 8.00000 14.38503 79.8% - 1s * 70 48 5 9.0000000 14.13848 57.1% 73.9 1s Cutting planes: Clique: 55 Zero half: 2 Explored 279 nodes (17786 simplex iterations) in 2.65 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%