Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:30:47 2013 Optimize a model with 649 rows, 34869 columns and 69679 nonzeros Presolve time: 0.05s Presolved: 649 rows, 34869 columns, 69679 nonzeros Variable types: 34810 continuous, 59 integer (59 binary) Root relaxation: objective 6.733767e+04, 1680 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 67337.6671 0 8 - 67337.6671 - - 0s H 0 0 70499.000000 67337.6671 4.48% - 0s 0 0 67681.7466 0 5 70499.0000 67681.7466 4.00% - 0s H 0 0 69210.000000 67681.7466 2.21% - 0s 0 0 67732.1356 0 6 69210.0000 67732.1356 2.14% - 0s H 0 0 69203.000000 67732.1356 2.13% - 0s 0 0 67746.8728 0 6 69203.0000 67746.8728 2.10% - 0s H 0 0 69136.000000 67746.8728 2.01% - 0s 0 0 67749.5505 0 6 69136.0000 67749.5505 2.01% - 0s H 0 0 69024.000000 67749.5505 1.85% - 0s 0 0 67750.4257 0 4 69024.0000 67750.4257 1.85% - 0s 0 0 67750.4332 0 6 69024.0000 67750.4332 1.85% - 0s H 0 0 69020.000000 67750.4332 1.84% - 0s 0 0 67751.8683 0 6 69020.0000 67751.8683 1.84% - 0s 0 0 67752.7126 0 5 69020.0000 67752.7126 1.84% - 0s 0 0 67752.7317 0 5 69020.0000 67752.7317 1.84% - 0s 0 0 67752.7317 0 5 69020.0000 67752.7317 1.84% - 0s H 0 0 67808.000000 67752.7317 0.08% - 0s 0 0 67752.7317 0 4 67808.0000 67752.7317 0.08% - 1s 0 0 67753.3296 0 4 67808.0000 67753.3296 0.08% - 1s 0 0 67803.1374 0 3 67808.0000 67803.1374 0.01% - 1s Cutting planes: Implied bound: 45 Flow cover: 8 Explored 0 nodes (3075 simplex iterations) in 1.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.780800000000e+04, best bound 6.780313742072e+04, gap 0.0072%