Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:25:17 2012 Optimize a model with 7871 rows, 1056 columns and 24510 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 7901 rows, 1054 columns, 28449 nonzeros Variable types: 0 continuous, 1054 integer (1054 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.428571e+00, 5916 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.42857 0 930 32.00000 3.42857 89.3% - 1s 0 0 6.00000 0 108 32.00000 6.00000 81.2% - 1s H 0 0 15.0000000 6.00000 60.0% - 1s H 0 0 10.0000000 6.00000 40.0% - 1s 0 0 6.00000 0 136 10.00000 6.00000 40.0% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s 0 0 6.00000 0 78 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 96 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 141 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 115 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 92 8.00000 6.00000 25.0% - 3s 0 0 6.00000 0 97 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 118 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 81 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 95 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 95 8.00000 6.00000 25.0% - 5s 0 2 6.00000 0 95 8.00000 6.00000 25.0% - 5s * 16 5 13 7.0000000 6.00000 14.3% 274 7s Cutting planes: Gomory: 7 Clique: 22 Zero half: 105 Explored 23 nodes (40873 simplex iterations) in 8.27 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%