Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012 Optimize a model with 149 rows, 82 columns and 298 nonzeros Presolve removed 69 rows and 32 columns Presolve time: 0.00s Presolved: 80 rows, 50 columns, 161 nonzeros Variable types: 0 continuous, 50 integer (50 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 4.150000e+01, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.50000 0 39 38.00000 41.50000 9.21% - 0s H 0 0 40.0000000 41.50000 3.75% - 0s 0 0 infeasible 0 40.00000 40.99996 2.50% - 0s Cutting planes: Gomory: 1 Zero half: 9 Explored 0 nodes (90 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%