Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:12:12 2012 Optimize a model with 2107 rows, 1892 columns and 8041 nonzeros Presolve removed 4 rows and 172 columns Presolve time: 0.04s Presolved: 2103 rows, 1720 columns, 7869 nonzeros Variable types: 0 continuous, 1720 integer (1720 binary) Found heuristic solution: objective 21.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 1421 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 120 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 78 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 119 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 120 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 120 3.00000 2.00000 33.3% - 2s 0 2 2.00000 0 120 3.00000 2.00000 33.3% - 2s 9 8 2.00000 1 119 3.00000 2.00000 33.3% 398 5s Cutting planes: Gomory: 4 Zero half: 1 Explored 16 nodes (78989 simplex iterations) in 7.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%