Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:57 2012 Optimize a model with 56 rows, 42 columns and 112 nonzeros Presolve removed 34 rows and 24 columns Presolve time: 0.00s Presolved: 22 rows, 18 columns, 44 nonzeros Variable types: 0 continuous, 18 integer (18 binary) Found heuristic solution: objective 22.0000000 Root relaxation: cutoff, 17 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 22.00000 22.99998 4.55% - 0s Explored 0 nodes (17 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%