Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012 Optimize a model with 285 rows, 104 columns and 570 nonzeros Presolve removed 67 rows and 6 columns Presolve time: 0.00s Presolved: 218 rows, 98 columns, 461 nonzeros Variable types: 0 continuous, 98 integer (98 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 4.666667e+01, 146 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46.66667 0 76 40.00000 46.66667 16.7% - 0s H 0 0 44.0000000 46.66667 6.06% - 0s H 0 0 45.0000000 46.66667 3.70% - 0s 0 0 cutoff 0 45.00000 45.99995 2.22% - 0s Cutting planes: Gomory: 2 Zero half: 63 Explored 0 nodes (213 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%