Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:36 2012 Optimize a model with 72 rows, 34 columns and 144 nonzeros Presolve removed 34 rows and 8 columns Presolve time: 0.00s Presolved: 38 rows, 26 columns, 86 nonzeros Variable types: 0 continuous, 26 integer (26 binary) Found heuristic solution: objective 15.0000000 Root relaxation: cutoff, 15 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 15.00000 15.99998 6.67% - 0s Explored 0 nodes (15 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%