Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:45 2012 Optimize a model with 6539 rows, 930 columns and 20398 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 6567 rows, 928 columns, 25304 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.555556e+00, 7074 iterations, 0.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.55556 0 730 30.00000 3.55556 88.1% - 1s 0 0 6.00000 0 124 30.00000 6.00000 80.0% - 1s H 0 0 26.0000000 6.00000 76.9% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 112 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 93 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 111 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 93 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 91 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 107 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 123 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 110 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 107 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 106 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 114 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 114 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 108 7.00000 6.00000 14.3% - 3s Cutting planes: Clique: 34 Zero half: 10 Explored 11 nodes (23311 simplex iterations) in 3.21 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%