Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:07:00 2012 Optimize a model with 519 rows, 485 columns and 1780 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 519 rows, 463 columns, 1758 nonzeros Variable types: 0 continuous, 463 integer (462 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 272 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 0 200 98.00000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s 0 0 0.28904 0 202 69.00000 0.28904 100% - 0s 0 0 0.71570 0 204 69.00000 0.71570 99.0% - 0s H 0 0 59.0000000 0.71570 98.8% - 0s 0 0 0.71660 0 205 59.00000 0.71660 98.8% - 0s 0 0 0.71660 0 205 59.00000 0.71660 98.8% - 0s H 0 0 42.0000000 0.71660 98.3% - 0s 0 2 0.71710 0 205 42.00000 0.71710 98.3% - 0s * 37 34 25 20.0000000 1.00000 95.0% 36.7 0s * 45 25 31 19.0000000 1.00000 94.7% 34.9 0s * 121 64 14 17.0000000 1.00000 94.1% 41.2 0s Cutting planes: Gomory: 2 Zero half: 1 Mod-K: 1 Explored 679 nodes (27767 simplex iterations) in 1.11 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%