Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:10 2012 Optimize a model with 238 rows, 102 columns and 476 nonzeros Presolve removed 42 rows and 9 columns Presolve time: 0.00s Presolved: 196 rows, 93 columns, 402 nonzeros Variable types: 0 continuous, 93 integer (93 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 4.700000e+01, 124 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.00000 0 82 40.00000 47.00000 17.5% - 0s 0 0 46.19231 0 90 40.00000 46.19231 15.5% - 0s H 0 0 43.0000000 46.19231 7.42% - 0s 0 0 45.50000 0 91 43.00000 45.50000 5.81% - 0s 0 0 45.14286 0 85 43.00000 45.14286 4.98% - 0s H 0 0 44.0000000 45.14286 2.60% - 0s 0 0 cutoff 0 44.00000 44.99995 2.27% - 0s Cutting planes: Gomory: 1 Zero half: 23 Explored 0 nodes (282 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%