Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:25:26 2012 Optimize a model with 8031 rows, 1056 columns and 24990 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.10s Presolved: 8061 rows, 1054 columns, 28553 nonzeros Variable types: 0 continuous, 1054 integer (1054 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.411765e+00, 7402 iterations, 0.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.41176 0 923 32.00000 3.41176 89.3% - 1s 0 0 5.09524 0 180 32.00000 5.09524 84.1% - 2s H 0 0 29.0000000 5.09524 82.4% - 2s H 0 0 23.0000000 5.09524 77.8% - 2s 0 0 5.22642 0 166 23.00000 5.22642 77.3% - 3s H 0 0 13.0000000 5.22642 59.8% - 3s H 0 0 7.0000000 5.22642 25.3% - 3s 0 0 5.36220 0 680 7.00000 5.36220 23.4% - 3s 0 0 5.36364 0 719 7.00000 5.36364 23.4% - 3s 0 0 5.36364 0 662 7.00000 5.36364 23.4% - 5s 0 0 5.36364 0 736 7.00000 5.36364 23.4% - 7s 0 0 5.36364 0 736 7.00000 5.36364 23.4% - 7s 0 2 5.36364 0 736 7.00000 5.36364 23.4% - 9s 16 12 6.00000 11 115 7.00000 5.36364 23.4% 413 10s 124 16 6.00000 9 108 7.00000 6.00000 14.3% 254 15s Cutting planes: Gomory: 27 Clique: 165 Zero half: 12 Explored 199 nodes (78921 simplex iterations) in 18.14 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%