Optimize a model with 101 rows, 5050 columns and 10100 nonzeros Presolve time: 0.01s Presolved: 101 rows, 5050 columns, 10100 nonzeros Variable types: 0 continuous, 5050 integer (5050 binary) Root relaxation: objective 6.190000e+02, 164 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 619.00000 0 14 - 619.00000 - - 0s 0 0 620.50000 0 6 - 620.50000 - - 0s 0 0 620.91667 0 23 - 620.91667 - - 0s 0 0 622.33333 0 25 - 622.33333 - - 0s 0 0 622.33333 0 23 - 622.33333 - - 0s 0 0 622.40000 0 27 - 622.40000 - - 0s 0 0 622.50000 0 16 - 622.50000 - - 0s 0 0 622.50000 0 20 - 622.50000 - - 0s 0 0 622.50000 0 13 - 622.50000 - - 0s 0 0 622.50000 0 10 - 622.50000 - - 0s 0 0 622.50000 0 15 - 622.50000 - - 0s 0 0 622.50000 0 15 - 622.50000 - - 0s 0 2 622.50000 0 15 - 622.50000 - - 0s * 20 20 16 631.0000000 626.50000 0.71% 6.5 0s * 37 16 5 630.0000000 627.00000 0.48% 5.6 0s * 56 7 7 629.0000000 627.70000 0.21% 5.1 0s Cutting planes: Zero half: 12 Explored 64 nodes (600 simplex iterations) in 0.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.290000000000e+02, best bound 6.290000000000e+02, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:43:43 2012