Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:15:39 2013 Optimize a model with 987 rows, 324 columns and 3078 nonzeros Presolve removed 157 rows and 157 columns Presolve time: 0.00s Presolved: 830 rows, 167 columns, 2700 nonzeros Variable types: 14 continuous, 153 integer (153 binary) Found heuristic solution: objective 5197.0000000 Found heuristic solution: objective 4741.0000000 Root relaxation: objective 3.264583e+03, 91 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3264.58333 0 8 4741.00000 3264.58333 31.1% - 0s 0 0 3265.00000 0 16 4741.00000 3265.00000 31.1% - 0s H 0 0 3300.0000000 3265.00000 1.06% - 0s H 0 0 3295.0000000 3265.00000 0.91% - 0s H 0 0 3286.0000000 3265.00000 0.64% - 0s 0 0 3265.00000 0 29 3286.00000 3265.00000 0.64% - 0s 0 0 3265.00000 0 9 3286.00000 3265.00000 0.64% - 0s H 0 0 3279.0000000 3265.00000 0.43% - 0s H 0 0 3277.0000000 3265.00000 0.37% - 0s 0 0 3265.00000 0 25 3277.00000 3265.00000 0.37% - 0s 0 0 3265.01345 0 28 3277.00000 3265.01345 0.37% - 0s 0 0 3265.14698 0 32 3277.00000 3265.14698 0.36% - 0s 0 0 3265.46649 0 30 3277.00000 3265.46649 0.35% - 0s 0 0 3265.68267 0 33 3277.00000 3265.68267 0.35% - 0s 0 0 3265.80208 0 35 3277.00000 3265.80208 0.34% - 0s 0 0 3265.84835 0 36 3277.00000 3265.84835 0.34% - 0s 0 0 3265.89433 0 36 3277.00000 3265.89433 0.34% - 0s 0 0 3265.95253 0 36 3277.00000 3265.95253 0.34% - 0s 0 0 3265.96605 0 37 3277.00000 3265.96605 0.34% - 0s 0 0 3265.97168 0 36 3277.00000 3265.97168 0.34% - 0s H 0 0 3276.0000000 3265.97168 0.31% - 0s 0 0 3265.97385 0 36 3276.00000 3265.97385 0.31% - 0s H 0 0 3274.0000000 3265.97385 0.25% - 0s 0 2 3265.98664 0 36 3274.00000 3265.98664 0.24% - 0s H 27 20 3272.0000000 3266.79070 0.16% 6.6 0s * 109 17 12 3271.0000000 3268.29576 0.08% 7.7 0s Cutting planes: MIR: 35 Mod-K: 2 Explored 146 nodes (1695 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.271000000000e+03, best bound 3.271000000000e+03, gap 0.0%