Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:37 2012 Optimize a model with 3562 rows, 119 columns and 7124 nonzeros Presolve removed 2534 rows and 0 columns Presolve time: 0.12s Presolved: 1028 rows, 119 columns, 7052 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.610014e+01, 546 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.10014 0 116 7.00000 16.10014 130% - 0s 0 0 15.58276 0 118 7.00000 15.58276 123% - 0s H 0 0 8.0000000 15.58276 94.8% - 0s 0 0 15.45271 0 119 8.00000 15.45271 93.2% - 0s 0 0 15.37896 0 119 8.00000 15.37896 92.2% - 0s 0 0 15.33338 0 118 8.00000 15.33338 91.7% - 0s H 0 0 9.0000000 15.33338 70.4% - 0s 0 0 15.29608 0 119 9.00000 15.29608 70.0% - 0s 0 0 15.28275 0 118 9.00000 15.28275 69.8% - 1s 0 0 15.25506 0 119 9.00000 15.25506 69.5% - 1s 0 0 15.24254 0 119 9.00000 15.24254 69.4% - 1s 0 0 15.23706 0 119 9.00000 15.23706 69.3% - 1s 0 0 15.23630 0 119 9.00000 15.23630 69.3% - 1s 0 0 15.23492 0 119 9.00000 15.23492 69.3% - 1s 0 0 15.23485 0 119 9.00000 15.23485 69.3% - 2s 0 2 15.22480 0 119 9.00000 15.22480 69.2% - 2s Cutting planes: Clique: 122 Explored 563 nodes (34068 simplex iterations) in 4.61 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%