Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:02 2012 Optimize a model with 2287 rows, 95 columns and 4574 nonzeros Presolve removed 1630 rows and 0 columns Presolve time: 0.07s Presolved: 657 rows, 95 columns, 4428 nonzeros Variable types: 0 continuous, 95 integer (95 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.340969e+01, 342 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.40969 0 93 7.00000 13.40969 91.6% - 0s H 0 0 8.0000000 13.40969 67.6% - 0s 0 0 13.15817 0 95 8.00000 13.15817 64.5% - 0s 0 0 13.11384 0 95 8.00000 13.11384 63.9% - 0s 0 0 13.07492 0 95 8.00000 13.07492 63.4% - 0s 0 0 13.05800 0 95 8.00000 13.05800 63.2% - 0s 0 0 13.04653 0 95 8.00000 13.04653 63.1% - 0s 0 0 13.04602 0 95 8.00000 13.04602 63.1% - 0s 0 0 13.04545 0 95 8.00000 13.04545 63.1% - 0s 0 2 13.04485 0 95 8.00000 13.04485 63.1% - 0s * 172 19 4 9.0000000 10.96513 21.8% 53.7 1s Cutting planes: Clique: 48 Zero half: 10 Explored 192 nodes (10363 simplex iterations) in 1.21 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%