Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:39 2012 Optimize a model with 155 rows, 56 columns and 310 nonzeros Presolve removed 56 rows and 5 columns Presolve time: 0.00s Presolved: 99 rows, 51 columns, 221 nonzeros Variable types: 0 continuous, 51 integer (51 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 2.333333e+01, 69 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23.33333 0 40 22.00000 23.33333 6.06% - 0s H 0 0 23.0000000 23.33333 1.45% - 0s Explored 0 nodes (103 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%