Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:04:48 2013 Optimize a model with 298 rows, 144 columns and 936 nonzeros Presolve removed 117 rows and 77 columns Presolve time: 0.00s Presolved: 181 rows, 67 columns, 597 nonzeros Variable types: 6 continuous, 61 integer (61 binary) Found heuristic solution: objective 3178.0000000 Found heuristic solution: objective 3170.0000000 Root relaxation: objective 2.827714e+03, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2827.71429 0 4 3170.00000 2827.71429 10.8% - 0s H 0 0 2994.0000000 2827.71429 5.55% - 0s 0 0 2830.28934 0 8 2994.00000 2830.28934 5.47% - 0s 0 0 2833.04856 0 7 2994.00000 2833.04856 5.38% - 0s H 0 0 2845.0000000 2833.04856 0.42% - 0s 0 0 2833.72611 0 10 2845.00000 2833.72611 0.40% - 0s 0 0 2833.72611 0 4 2845.00000 2833.72611 0.40% - 0s 0 0 2833.72611 0 10 2845.00000 2833.72611 0.40% - 0s 0 0 2833.77362 0 10 2845.00000 2833.77362 0.39% - 0s 0 0 2833.96684 0 10 2845.00000 2833.96684 0.39% - 0s 0 0 2833.98951 0 12 2845.00000 2833.98951 0.39% - 0s H 0 0 2834.0000000 2833.98951 0.00% - 0s Cutting planes: MIR: 8 Explored 0 nodes (80 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.834000000000e+03, best bound 2.834000000000e+03, gap 0.0%