Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:08 2012 Optimize a model with 242 rows, 97 columns and 484 nonzeros Presolve removed 61 rows and 12 columns Presolve time: 0.00s Presolved: 181 rows, 85 columns, 376 nonzeros Variable types: 0 continuous, 85 integer (85 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 4.475000e+01, 118 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.75000 0 75 39.00000 44.75000 14.7% - 0s H 0 0 40.0000000 44.75000 11.9% - 0s 0 0 44.00000 0 76 40.00000 44.00000 10.0% - 0s 0 0 44.00000 0 74 40.00000 44.00000 10.0% - 0s H 0 0 42.0000000 44.00000 4.76% - 0s 0 0 43.50000 0 85 42.00000 43.50000 3.57% - 0s 0 0 43.00000 0 85 42.00000 43.00000 2.38% - 0s 0 0 cutoff 0 42.00000 42.99996 2.38% - 0s Cutting planes: Gomory: 2 Zero half: 28 Explored 0 nodes (271 simplex iterations) in 0.02 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%