Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:03 2013 Optimize a model with 469 rows, 196 columns and 1470 nonzeros Presolve removed 180 rows and 108 columns Presolve time: 0.00s Presolved: 289 rows, 88 columns, 911 nonzeros Variable types: 4 continuous, 84 integer (84 binary) Found heuristic solution: objective 4363.0000000 Found heuristic solution: objective 4097.0000000 Root relaxation: objective 3.658270e+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 3658.27027 0 3 4097.00000 3658.27027 10.7% - 0s H 0 0 3669.0000000 3658.27027 0.29% - 0s 0 0 3665.37525 0 9 3669.00000 3665.37525 0.10% - 0s 0 0 3665.37525 0 3 3669.00000 3665.37525 0.10% - 0s 0 0 3665.37525 0 9 3669.00000 3665.37525 0.10% - 0s 0 0 3665.73099 0 8 3669.00000 3665.73099 0.09% - 0s 0 1 3666.00000 0 8 3669.00000 3666.00000 0.08% - 0s H 3 3 3666.0000000 3666.00000 0.0% 0.0 0s Explored 3 nodes (50 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.666000000000e+03, best bound 3.666000000000e+03, gap 0.0%