Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:16 2012 Optimize a model with 1405 rows, 76 columns and 2810 nonzeros Presolve removed 980 rows and 0 columns Presolve time: 0.03s Presolved: 425 rows, 76 columns, 2631 nonzeros Variable types: 0 continuous, 76 integer (76 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.183528e+01, 277 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.83528 0 72 8.00000 11.83528 47.9% - 0s 0 0 11.56443 0 75 8.00000 11.56443 44.6% - 0s 0 0 11.51914 0 75 8.00000 11.51914 44.0% - 0s 0 0 11.51161 0 74 8.00000 11.51161 43.9% - 0s 0 0 11.49752 0 75 8.00000 11.49752 43.7% - 0s 0 0 11.48061 0 75 8.00000 11.48061 43.5% - 0s 0 0 11.47663 0 74 8.00000 11.47663 43.5% - 0s 0 0 11.46489 0 74 8.00000 11.46489 43.3% - 0s 0 0 11.46387 0 75 8.00000 11.46387 43.3% - 0s 0 0 11.46348 0 75 8.00000 11.46348 43.3% - 0s 0 0 11.46348 0 75 8.00000 11.46348 43.3% - 0s 0 2 11.46247 0 75 8.00000 11.46247 43.3% - 0s * 75 1 5 9.0000000 9.11111 1.23% 43.5 0s Cutting planes: Clique: 53 Zero half: 7 Explored 76 nodes (3806 simplex iterations) in 0.48 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%