Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:08 2012 Optimize a model with 3527 rows, 600 columns and 11062 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 3525 rows, 598 columns, 18751 nonzeros Variable types: 0 continuous, 598 integer (598 binary) Root relaxation: objective 4.933333e+00, 3033 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.93333 0 238 - 4.93333 - - 0s H 0 0 24.0000000 4.93333 79.4% - 0s 0 0 6.00000 0 89 24.00000 6.00000 75.0% - 0s H 0 0 12.0000000 6.00000 50.0% - 0s H 0 0 7.0000000 6.00000 14.3% - 0s 0 0 6.00000 0 40 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 38 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 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 41 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 18 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 35 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 33 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 42 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 40 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 40 7.00000 6.00000 14.3% - 1s 0 2 6.00000 0 40 7.00000 6.00000 14.3% - 1s Cutting planes: Clique: 13 Zero half: 7 Explored 30 nodes (13495 simplex iterations) in 1.57 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%