Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012 Optimize a model with 176 rows, 85 columns and 352 nonzeros Presolve removed 76 rows and 27 columns Presolve time: 0.00s Presolved: 100 rows, 58 columns, 210 nonzeros Variable types: 0 continuous, 58 integer (58 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.300000e+01, 73 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 43 41.00000 43.00000 4.88% - 0s H 0 0 42.0000000 43.00000 2.38% - 0s 0 0 infeasible 0 42.00000 42.99996 2.38% - 0s Cutting planes: Gomory: 1 Zero half: 31 Explored 0 nodes (129 simplex iterations) in 0.00 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%