Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:11:23 2012 Optimize a model with 541 rows, 505 columns and 1855 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 541 rows, 485 columns, 1835 nonzeros Variable types: 0 continuous, 485 integer (484 binary) Found heuristic solution: objective 105.0000000 Root relaxation: objective 0.000000e+00, 269 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 204 105.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.39039 0 207 76.00000 0.39039 99.5% - 0s H 0 0 59.0000000 0.39039 99.3% - 0s 0 0 0.96721 0 209 59.00000 0.96721 98.4% - 0s H 0 0 47.0000000 0.96721 97.9% - 0s 0 0 0.96722 0 212 47.00000 0.96722 97.9% - 0s 0 0 0.96722 0 211 47.00000 0.96722 97.9% - 0s H 0 0 45.0000000 0.96722 97.9% - 0s 0 2 0.97074 0 211 45.00000 0.97074 97.8% - 0s H 24 24 42.0000000 2.81888 93.3% 45.9 0s H 27 27 35.0000000 2.81888 91.9% 44.4 0s H 54 35 21.0000000 2.81888 86.6% 31.7 0s * 105 46 11 19.0000000 5.02477 73.6% 31.4 0s * 136 56 16 18.0000000 5.11905 71.6% 34.2 0s * 182 66 10 17.0000000 6.22500 63.4% 36.8 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 469 nodes (17828 simplex iterations) in 0.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%