Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:06 2012 Optimize a model with 207 rows, 92 columns and 414 nonzeros Presolve removed 107 rows and 32 columns Presolve time: 0.00s Presolved: 100 rows, 60 columns, 212 nonzeros Variable types: 0 continuous, 60 integer (60 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.300000e+01, 66 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43.00000 0 50 41.00000 43.00000 4.88% - 0s 0 0 42.00000 0 48 41.00000 42.00000 2.44% - 0s H 0 0 42.0000000 42.00000 0.0% - 0s Cutting planes: Zero half: 4 Explored 0 nodes (114 simplex iterations) in 0.01 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%