Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:39 2012 Optimize a model with 1224 rows, 1190 columns and 4726 nonzeros Presolve removed 2 rows and 68 columns Presolve time: 0.02s Presolved: 1222 rows, 1122 columns, 4658 nonzeros Variable types: 0 continuous, 1122 integer (1122 binary) Found heuristic solution: objective 14.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 1279 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 64 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 99 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 99 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 98 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 99 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 99 3.00000 2.00000 33.3% - 1s 0 2 2.00000 0 99 3.00000 2.00000 33.3% - 1s Cutting planes: Gomory: 6 Zero half: 4 Explored 9 nodes (38714 simplex iterations) in 2.41 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%