Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:39 2012 Optimize a model with 1070 rows, 65 columns and 2140 nonzeros Presolve removed 749 rows and 0 columns Presolve time: 0.02s Presolved: 321 rows, 65 columns, 1964 nonzeros Variable types: 0 continuous, 65 integer (65 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.028805e+01, 158 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.28805 0 62 6.00000 10.28805 71.5% - 0s H 0 0 7.0000000 10.28805 47.0% - 0s 0 0 10.17402 0 58 7.00000 10.17402 45.3% - 0s 0 0 10.09202 0 62 7.00000 10.09202 44.2% - 0s 0 0 10.06216 0 64 7.00000 10.06216 43.7% - 0s H 0 0 8.0000000 10.06216 25.8% - 0s 0 0 10.03572 0 63 8.00000 10.03572 25.4% - 0s 0 0 10.03409 0 62 8.00000 10.03409 25.4% - 0s 0 0 10.02270 0 64 8.00000 10.02270 25.3% - 0s 0 0 10.01762 0 64 8.00000 10.01762 25.2% - 0s 0 0 10.01682 0 65 8.00000 10.01682 25.2% - 0s 0 2 10.01557 0 65 8.00000 10.01557 25.2% - 0s Cutting planes: Clique: 24 Zero half: 9 Explored 15 nodes (1050 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%