Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:27:43 2013 Optimize a model with 160 rows, 5425 columns and 60595 nonzeros Presolve removed 5 rows and 125 columns Presolve time: 0.30s Presolved: 155 rows, 5300 columns, 55595 nonzeros Variable types: 5255 continuous, 45 integer (45 binary) Root relaxation: objective 9.601887e+03, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9601.88662 0 7 - 9601.88662 - - 0s 0 0 9604.22406 0 7 - 9604.22406 - - 0s 0 0 9604.22406 0 7 - 9604.22406 - - 0s 0 2 9604.22406 0 7 - 9604.22406 - - 1s * 34 28 32 9728.3613277 9605.48275 1.26% 4.5 1s * 39 27 34 9728.1358955 9605.48275 1.26% 4.2 1s * 65 37 28 9666.2143249 9611.88160 0.56% 3.2 1s * 83 25 16 9637.9870874 9614.90361 0.24% 3.0 1s H 89 21 9635.6798997 9614.90361 0.22% 2.9 1s * 110 21 21 9626.8259919 9617.08032 0.10% 2.7 1s * 111 17 21 9624.4944721 9617.08032 0.08% 2.7 1s Explored 123 nodes (539 simplex iterations) in 1.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.624494472145e+03, best bound 9.623639658067e+03, gap 0.0089%