Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:35:54 2012 Optimize a model with 5319 rows, 812 columns and 16630 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 5317 rows, 810 columns, 22124 nonzeros Variable types: 0 continuous, 810 integer (810 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 3.733333e+00, 5355 iterations, 0.30 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.73333 0 593 28.00000 3.73333 86.7% - 1s 0 0 6.00000 0 117 28.00000 6.00000 78.6% - 1s H 0 0 21.0000000 6.00000 71.4% - 1s 0 0 6.00000 0 121 21.00000 6.00000 71.4% - 1s H 0 0 18.0000000 6.00000 66.7% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 72 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 77 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 121 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 90 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 96 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 104 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 99 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 92 7.00000 6.00000 14.3% - 2s Cutting planes: Gomory: 1 Clique: 6 Zero half: 19 Explored 6 nodes (19876 simplex iterations) in 2.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%