Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:31 2013 Optimize a model with 495 rows, 20295 columns and 40545 nonzeros Presolve time: 0.03s Presolved: 495 rows, 20295 columns, 40545 nonzeros Variable types: 20250 continuous, 45 integer (45 binary) Root relaxation: objective 5.743695e+04, 1171 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 57436.9477 0 6 - 57436.9477 - - 0s H 0 0 58987.000000 57436.9477 2.63% - 0s H 0 0 58697.000000 57436.9477 2.15% - 0s 0 0 58083.3069 0 5 58697.0000 58083.3069 1.05% - 0s 0 0 58105.2268 0 3 58697.0000 58105.2268 1.01% - 0s 0 0 58109.9100 0 5 58697.0000 58109.9100 1.00% - 0s 0 0 58110.2596 0 3 58697.0000 58110.2596 1.00% - 0s H 0 0 58661.000000 58110.2596 0.94% - 0s 0 0 58110.2596 0 3 58661.0000 58110.2596 0.94% - 0s H 0 0 58333.000000 58110.2596 0.38% - 0s 0 0 58110.2596 0 4 58333.0000 58110.2596 0.38% - 0s 0 0 58110.2596 0 4 58333.0000 58110.2596 0.38% - 0s 0 0 58110.2596 0 2 58333.0000 58110.2596 0.38% - 0s 0 0 58110.2701 0 3 58333.0000 58110.2701 0.38% - 0s 0 0 58110.4205 0 2 58333.0000 58110.4205 0.38% - 0s 0 2 58111.8140 0 2 58333.0000 58111.8140 0.38% - 0s H 6 4 58303.000000 58199.3804 0.18% 42.2 0s H 7 3 58269.000000 58199.3804 0.12% 44.4 0s * 8 3 6 58244.000000 58199.3804 0.08% 41.8 0s Cutting planes: Implied bound: 37 Flow cover: 2 Explored 12 nodes (2979 simplex iterations) in 0.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.824400000000e+04, best bound 5.824400000000e+04, gap 0.0%