Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012 Optimize a model with 203 rows, 93 columns and 406 nonzeros Presolve removed 51 rows and 14 columns Presolve time: 0.00s Presolved: 152 rows, 79 columns, 312 nonzeros Variable types: 0 continuous, 79 integer (79 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.550000e+01, 105 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.50000 0 69 41.00000 45.50000 11.0% - 0s 0 0 44.00000 0 66 41.00000 44.00000 7.32% - 0s H 0 0 43.0000000 44.00000 2.33% - 0s H 0 0 44.0000000 44.00000 0.0% - 0s Cutting planes: Zero half: 5 Explored 0 nodes (162 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%