Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:48:27 2012 Optimize a model with 2525 rows, 100 columns and 5050 nonzeros Presolve removed 1797 rows and 0 columns Presolve time: 0.08s Presolved: 728 rows, 100 columns, 5090 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.366112e+01, 411 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.66112 0 92 7.00000 13.66112 95.2% - 0s H 0 0 8.0000000 13.66112 70.8% - 0s 0 0 13.31274 0 98 8.00000 13.31274 66.4% - 0s 0 0 13.19519 0 96 8.00000 13.19519 64.9% - 0s 0 0 13.15661 0 97 8.00000 13.15661 64.5% - 0s 0 0 13.14530 0 98 8.00000 13.14530 64.3% - 0s 0 0 13.13514 0 97 8.00000 13.13514 64.2% - 0s 0 0 13.13353 0 97 8.00000 13.13353 64.2% - 0s 0 2 13.12807 0 97 8.00000 13.12807 64.1% - 0s H 194 35 9.0000000 11.36107 26.2% 57.6 1s Cutting planes: Clique: 66 Zero half: 3 Explored 236 nodes (13228 simplex iterations) in 1.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%