Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:32 2012 Optimize a model with 265 rows, 210 columns and 870 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 265 rows, 209 columns, 869 nonzeros Variable types: 0 continuous, 209 integer (208 binary) Found heuristic solution: objective 62.0000000 Found heuristic solution: objective 60.0000000 Root relaxation: objective 0.000000e+00, 121 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 76 60.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.52980 0 77 45.00000 0.52980 98.8% - 0s H 0 0 44.0000000 0.52980 98.8% - 0s 0 0 1.00000 0 79 44.00000 1.00000 97.7% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s 0 0 1.00000 0 76 43.00000 1.00000 97.7% - 0s 0 2 1.00000 0 76 43.00000 1.00000 97.7% - 0s * 27 23 17 19.0000000 1.98667 89.5% 35.7 0s Cutting planes: Gomory: 2 Zero half: 1 Explored 1249 nodes (26210 simplex iterations) in 0.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%