Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:36:09 2012 Optimize a model with 5235 rows, 812 columns and 16378 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 5261 rows, 810 columns, 21534 nonzeros Variable types: 0 continuous, 810 integer (810 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 3.704918e+00, 6231 iterations, 0.38 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.70492 0 601 28.00000 3.70492 86.8% - 0s H 0 0 24.0000000 3.70492 84.6% - 1s 0 0 6.00000 0 102 24.00000 6.00000 75.0% - 1s H 0 0 11.0000000 6.00000 45.5% - 1s 0 0 6.00000 0 113 11.00000 6.00000 45.5% - 1s H 0 0 10.0000000 6.00000 40.0% - 1s 0 0 6.00000 0 16 10.00000 6.00000 40.0% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 47 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 39 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 89 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 36 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 71 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 73 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 73 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 73 7.00000 6.00000 14.3% - 2s Cutting planes: Clique: 10 Zero half: 2 Explored 9 nodes (16882 simplex iterations) in 2.45 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%