Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012 Optimize a model with 105 rows, 50 columns and 210 nonzeros Presolve removed 37 rows and 13 columns Presolve time: 0.00s Presolved: 68 rows, 37 columns, 142 nonzeros Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 2.350000e+01, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23.50000 0 19 21.00000 23.50000 11.9% - 0s H 0 0 22.0000000 23.50000 6.82% - 0s H 0 0 23.0000000 23.50000 2.17% - 0s Explored 0 nodes (56 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%