Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012 Optimize a model with 184 rows, 89 columns and 368 nonzeros Presolve removed 65 rows and 26 columns Presolve time: 0.00s Presolved: 119 rows, 63 columns, 242 nonzeros Variable types: 0 continuous, 63 integer (63 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.300000e+01, 88 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 61 41.00000 43.00000 4.88% - 0s H 0 0 42.0000000 43.00000 2.38% - 0s Cutting planes: Zero half: 1 Explored 0 nodes (108 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 4.300000000000e+01, gap 2.3810%