Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:29:24 2012 Optimize a model with 8164 rows, 2756 columns and 27040 nonzeros Presolve time: 0.07s Presolved: 8164 rows, 2756 columns, 27478 nonzeros Variable types: 0 continuous, 2756 integer (2756 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 2.000000e+00, 2202 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 104 34.00000 2.00000 94.1% - 0s H 0 0 12.0000000 2.00000 83.3% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 2.00000 0 104 5.00000 2.00000 60.0% - 0s 0 0 2.00000 0 104 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 104 5.00000 2.00000 60.0% - 5s 0 0 2.00000 0 104 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 104 5.00000 2.00000 60.0% - 9s 0 2 2.00000 0 104 5.00000 2.00000 60.0% - 15s 2 4 3.00000 1 516 5.00000 3.00000 40.0% 13950 22s * 26 8 20 4.0000000 3.00000 25.0% 1279 23s 37 1 cutoff 3 4.00000 3.00000 25.0% 1144 25s Cutting planes: Clique: 100 Explored 39 nodes (84866 simplex iterations) in 25.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%