Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012 Optimize a model with 248 rows, 93 columns and 496 nonzeros Presolve removed 114 rows and 23 columns Presolve time: 0.00s Presolved: 134 rows, 70 columns, 286 nonzeros Variable types: 0 continuous, 70 integer (70 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.200000e+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 42.00000 0 36 41.00000 42.00000 2.44% - 0s 0 0 infeasible 0 41.00000 41.99996 2.44% - 0s Explored 0 nodes (146 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%