Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:51:40 2012 Optimize a model with 2932 rows, 109 columns and 5864 nonzeros Presolve removed 2094 rows and 0 columns Presolve time: 0.08s Presolved: 838 rows, 109 columns, 5670 nonzeros Variable types: 0 continuous, 109 integer (109 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.500006e+01, 440 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.00006 0 106 6.00000 15.00006 150% - 0s H 0 0 7.0000000 15.00006 114% - 0s H 0 0 8.0000000 15.00006 87.5% - 0s 0 0 14.68102 0 105 8.00000 14.68102 83.5% - 0s 0 0 14.58005 0 108 8.00000 14.58005 82.3% - 0s 0 0 14.55192 0 108 8.00000 14.55192 81.9% - 0s 0 0 14.50328 0 107 8.00000 14.50328 81.3% - 0s H 0 0 9.0000000 14.50328 61.1% - 0s 0 0 14.49593 0 107 9.00000 14.49593 61.1% - 0s 0 0 14.49242 0 107 9.00000 14.49242 61.0% - 0s 0 0 14.48609 0 107 9.00000 14.48609 61.0% - 1s 0 0 14.47349 0 107 9.00000 14.47349 60.8% - 1s 0 0 14.47224 0 107 9.00000 14.47224 60.8% - 1s 0 0 14.46889 0 107 9.00000 14.46889 60.8% - 1s 0 0 14.46875 0 107 9.00000 14.46875 60.8% - 1s 0 0 14.46842 0 107 9.00000 14.46842 60.8% - 1s 0 0 14.46842 0 107 9.00000 14.46842 60.8% - 1s 0 2 14.46638 0 107 9.00000 14.46638 60.7% - 2s Cutting planes: Clique: 71 Zero half: 1 Explored 299 nodes (18942 simplex iterations) in 3.18 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%