Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:35:02 2013 Optimize a model with 71568 rows, 70728 columns and 282408 nonzeros Presolve removed 84 rows and 0 columns Presolve time: 0.34s Presolved: 71484 rows, 70728 columns, 282324 nonzeros Variable types: 70644 continuous, 84 integer (84 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7797 6.6925710e+04 7.576486e+03 0.000000e+00 5s 8429 6.7020588e+04 0.000000e+00 0.000000e+00 7s Root relaxation: objective 6.702059e+04, 8429 iterations, 6.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 67020.5880 0 58 - 67020.5880 - - 7s H 0 0 104554.00000 67020.5880 35.9% - 10s H 0 0 93608.000000 67020.5880 28.4% - 36s 0 0 82237.8974 0 32 93608.0000 82237.8974 12.1% - 53s 0 0 89148.6461 0 8 93608.0000 89148.6461 4.76% - 60s 0 0 90308.4893 0 6 93608.0000 90308.4893 3.52% - 62s H 0 0 92878.000000 90308.4893 2.77% - 62s 0 0 90370.7722 0 6 92878.0000 90370.7722 2.70% - 62s 0 0 90372.0928 0 3 92878.0000 90372.0928 2.70% - 63s H 0 0 92867.000000 90372.0928 2.69% - 63s H 0 0 91361.000000 90372.0928 1.08% - 64s 0 2 90376.4266 0 3 91361.0000 90376.4266 1.08% - 64s 1 3 90627.6282 1 4 91361.0000 90556.2761 0.88% 486 65s H 5 5 90835.989011 90691.7012 0.16% 252 66s H 6 3 90807.923077 90691.7012 0.13% 255 66s H 7 4 90797.542105 90691.7012 0.12% 221 66s * 8 4 7 90780.000000 90691.7012 0.10% 207 66s Cutting planes: Implied bound: 82 Explored 14 nodes (22786 simplex iterations) in 66.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.078000000000e+04, best bound 9.078000000000e+04, gap 0.0%