Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012 Optimize a model with 294 rows, 103 columns and 588 nonzeros Presolve removed 95 rows and 13 columns Presolve time: 0.00s Presolved: 199 rows, 90 columns, 422 nonzeros Variable types: 0 continuous, 90 integer (90 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 4.500000e+01, 127 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.00000 0 70 38.00000 45.00000 18.4% - 0s H 0 0 40.0000000 45.00000 12.5% - 0s 0 0 43.50000 0 80 40.00000 43.50000 8.75% - 0s 0 0 43.25000 0 81 40.00000 43.25000 8.12% - 0s 0 0 43.25000 0 81 40.00000 43.25000 8.12% - 0s H 0 0 41.0000000 43.25000 5.49% - 0s 0 0 43.25000 0 78 41.00000 43.25000 5.49% - 0s 0 0 43.20635 0 82 41.00000 43.20635 5.38% - 0s 0 0 43.10714 0 84 41.00000 43.10714 5.14% - 0s 0 0 43.00000 0 82 41.00000 43.00000 4.88% - 0s 0 0 43.00000 0 82 41.00000 43.00000 4.88% - 0s 0 0 43.00000 0 68 41.00000 43.00000 4.88% - 0s 0 2 43.00000 0 68 41.00000 43.00000 4.88% - 0s * 22 5 4 42.0000000 43.00000 2.38% 12.7 0s Cutting planes: Gomory: 1 Zero half: 18 Explored 23 nodes (860 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%