Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012 Optimize a model with 204 rows, 86 columns and 408 nonzeros Presolve removed 38 rows and 8 columns Presolve time: 0.00s Presolved: 166 rows, 78 columns, 344 nonzeros Variable types: 0 continuous, 78 integer (78 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 4.033333e+01, 113 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.33333 0 58 38.00000 40.33333 6.14% - 0s H 0 0 39.0000000 40.33333 3.42% - 0s Cutting planes: Gomory: 2 Zero half: 7 Explored 0 nodes (123 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 4.000000000000e+01, gap 2.5641%