Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:04 2012 Optimize a model with 2623 rows, 102 columns and 5246 nonzeros Presolve removed 1810 rows and 0 columns Presolve time: 0.08s Presolved: 813 rows, 102 columns, 5749 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.417787e+01, 481 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.17787 0 94 6.00000 14.17787 136% - 0s H 0 0 7.0000000 14.17787 103% - 0s 0 0 13.68174 0 99 7.00000 13.68174 95.5% - 0s 0 0 13.62013 0 102 7.00000 13.62013 94.6% - 0s H 0 0 8.0000000 13.62013 70.3% - 0s 0 0 13.58587 0 101 8.00000 13.58587 69.8% - 0s 0 0 13.58207 0 101 8.00000 13.58207 69.8% - 0s 0 0 13.57895 0 101 8.00000 13.57895 69.7% - 0s 0 0 13.57155 0 100 8.00000 13.57155 69.6% - 0s 0 0 13.51128 0 100 8.00000 13.51128 68.9% - 0s 0 0 13.49124 0 101 8.00000 13.49124 68.6% - 1s 0 0 13.48486 0 101 8.00000 13.48486 68.6% - 1s H 0 0 9.0000000 13.48486 49.8% - 1s 0 0 13.48424 0 101 9.00000 13.48424 49.8% - 1s 0 0 13.48401 0 101 9.00000 13.48401 49.8% - 1s 0 0 13.48393 0 101 9.00000 13.48393 49.8% - 1s 0 2 13.48375 0 101 9.00000 13.48375 49.8% - 1s Cutting planes: Clique: 83 Zero half: 1 Explored 158 nodes (10861 simplex iterations) in 2.42 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%