Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:43:52 2012 Optimize a model with 5828 rows, 870 columns and 18210 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 5826 rows, 868 columns, 23203 nonzeros Variable types: 0 continuous, 868 integer (868 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.661538e+00, 6010 iterations, 0.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.66154 0 681 29.00000 3.66154 87.4% - 1s 0 0 6.00000 0 124 29.00000 6.00000 79.3% - 1s H 0 0 25.0000000 6.00000 76.0% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 72 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 45 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 113 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 93 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 115 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 66 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 66 7.00000 6.00000 14.3% - 2s Cutting planes: Zero half: 31 Explored 7 nodes (18691 simplex iterations) in 2.66 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%