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 69 rows and 69 columns Presolve time: 0.00s Presolved: 229 rows, 75 columns, 768 nonzeros Variable types: 9 continuous, 66 integer (66 binary) Found heuristic solution: objective 2819.0000000 Root relaxation: objective 1.834089e+03, 25 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1834.08889 0 6 2819.00000 1834.08889 34.9% - 0s H 0 0 2397.0000000 1834.08889 23.5% - 0s 0 0 1838.66363 0 11 2397.00000 1838.66363 23.3% - 0s 0 0 1842.84259 0 10 2397.00000 1842.84259 23.1% - 0s 0 0 1842.92993 0 10 2397.00000 1842.92993 23.1% - 0s H 0 0 1860.0000000 1842.92993 0.92% - 0s 0 0 1844.50000 0 6 1860.00000 1844.50000 0.83% - 0s 0 0 1844.50000 0 6 1860.00000 1844.50000 0.83% - 0s H 0 0 1850.0000000 1844.50000 0.30% - 0s H 0 0 1849.0000000 1844.50000 0.24% - 0s 0 0 1844.50000 0 9 1849.00000 1844.50000 0.24% - 0s 0 0 1844.50000 0 6 1849.00000 1844.50000 0.24% - 0s 0 0 1844.93939 0 7 1849.00000 1844.93939 0.22% - 0s 0 0 1845.22504 0 11 1849.00000 1845.22504 0.20% - 0s 0 0 cutoff 0 1849.00000 1848.00185 0.05% - 0s Cutting planes: Implied bound: 2 MIR: 6 Explored 0 nodes (126 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.849000000000e+03, best bound 1.849000000000e+03, gap 0.0%