Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:58 2012 Optimize a model with 60 rows, 52 columns and 120 nonzeros Presolve removed 52 rows and 45 columns Presolve time: 0.00s Presolved: 8 rows, 7 columns, 16 nonzeros Variable types: 0 continuous, 7 integer (7 binary) Found heuristic solution: objective 28.0000000 Root relaxation: cutoff, 7 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 28.00000 28.99997 3.57% - 0s Explored 0 nodes (7 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%