Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:39 2012 Optimize a model with 141 rows, 56 columns and 282 nonzeros Presolve removed 36 rows and 4 columns Presolve time: 0.00s Presolved: 105 rows, 52 columns, 223 nonzeros Variable types: 0 continuous, 52 integer (52 binary) Found heuristic solution: objective 25.0000000 Root relaxation: cutoff, 62 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 25.00000 25.99997 4.00% - 0s Explored 0 nodes (62 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%