Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:57:21 2012 Optimize a model with 553 rows, 509 columns and 1889 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 553 rows, 495 columns, 1875 nonzeros Variable types: 0 continuous, 495 integer (494 binary) Found heuristic solution: objective 107.0000000 Root relaxation: objective 0.000000e+00, 353 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 216 107.00000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.45138 0 218 74.00000 0.45138 99.4% - 0s H 0 0 70.0000000 0.45138 99.4% - 0s 0 0 0.50918 0 219 70.00000 0.50918 99.3% - 0s H 0 0 47.0000000 0.50918 98.9% - 0s 0 0 0.50918 0 219 47.00000 0.50918 98.9% - 0s H 0 0 42.0000000 0.50918 98.8% - 0s H 0 0 41.0000000 0.50918 98.8% - 0s 0 2 0.51206 0 219 41.00000 0.51206 98.8% - 0s H 54 45 21.0000000 1.00000 95.2% 35.5 0s * 139 56 57 18.0000000 1.00000 94.4% 27.6 0s * 163 60 14 17.0000000 1.00572 94.1% 28.4 0s Cutting planes: Gomory: 2 Explored 1386 nodes (50076 simplex iterations) in 2.16 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%