Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:31:59 2012 Optimize a model with 89 rows, 56 columns and 178 nonzeros Presolve removed 40 rows and 22 columns Presolve time: 0.00s Presolved: 49 rows, 34 columns, 100 nonzeros Variable types: 0 continuous, 34 integer (34 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.050000e+01, 38 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 30.50000 0 21 29.00000 30.50000 5.17% - 0s 0 0 cutoff 0 29.00000 29.99997 3.45% - 0s Explored 0 nodes (57 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%