Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:16:20 2012 Optimize a model with 4549 rows, 702 columns and 14220 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 4547 rows, 700 columns, 19963 nonzeros Variable types: 0 continuous, 700 integer (700 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 3.920000e+00, 4463 iterations, 0.29 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.92000 0 467 26.00000 3.92000 84.9% - 0s 0 0 6.00000 0 84 26.00000 6.00000 76.9% - 1s H 0 0 21.0000000 6.00000 71.4% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 44 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 20 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 93 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 27 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 1s 0 2 6.00000 0 18 7.00000 6.00000 14.3% - 1s Explored 9 nodes (14441 simplex iterations) in 1.81 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%