Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:16 2013 Optimize a model with 516 rows, 1013 columns and 3525 nonzeros Presolve removed 16 rows and 164 columns Presolve time: 0.11s Presolved: 500 rows, 849 columns, 2546 nonzeros Variable types: 497 continuous, 352 integer (352 binary) Found heuristic solution: objective 3292.3314038 Root relaxation: objective 3.288577e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3288.57672 0 2 3292.33140 3288.57672 0.11% - 0s 0 0 3288.80944 0 2 3292.33140 3288.80944 0.11% - 0s 0 0 3289.04025 0 2 3292.33140 3289.04025 0.10% - 0s 0 0 3289.26918 0 2 3292.33140 3289.26918 0.09% - 0s 0 0 3289.49622 0 2 3292.33140 3289.49622 0.09% - 0s 0 0 3289.72140 0 2 3292.33140 3289.72140 0.08% - 0s 0 0 3289.94472 0 2 3292.33140 3289.94472 0.07% - 0s 0 0 3290.16621 0 2 3292.33140 3290.16621 0.07% - 0s 0 0 3290.38586 0 2 3292.33140 3290.38586 0.06% - 0s 0 0 3290.60371 0 2 3292.33140 3290.60371 0.05% - 0s 0 0 3290.81975 0 2 3292.33140 3290.81975 0.05% - 0s 0 0 3291.03400 0 2 3292.33140 3291.03400 0.04% - 0s 0 0 3291.24647 0 2 3292.33140 3291.24647 0.03% - 0s 0 0 3291.45717 0 2 3292.33140 3291.45717 0.03% - 0s 0 0 3291.66612 0 2 3292.33140 3291.66612 0.02% - 0s 0 0 3291.87333 0 2 3292.33140 3291.87333 0.01% - 0s 0 0 3292.07880 0 2 3292.33140 3292.07880 0.01% - 0s Explored 0 nodes (84 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.292331403819e+03, best bound 3.292078801181e+03, gap 0.0077%