Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:36:12 2013 Optimize a model with 71568 rows, 70728 columns and 282408 nonzeros Presolve removed 84 rows and 0 columns Presolve time: 0.33s Presolved: 71484 rows, 70728 columns, 282324 nonzeros Variable types: 70644 continuous, 84 integer (84 binary) Warning: Markowitz tolerance tightened to 0.03125 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8320 7.4054579e+04 1.754399e+03 0.000000e+00 5s 9690 7.4555592e+04 0.000000e+00 0.000000e+00 8s Root relaxation: objective 7.455559e+04, 9690 iterations, 8.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 74555.5916 0 62 - 74555.5916 - - 9s H 0 0 127718.00000 74555.5916 41.6% - 15s 0 0 93282.4127 0 16 127718.000 93282.4127 27.0% - 28s H 0 0 111734.00000 93282.4127 16.5% - 28s 0 0 97627.1305 0 10 111734.000 97627.1305 12.6% - 32s 0 0 98934.5761 0 6 111734.000 98934.5761 11.5% - 33s H 0 0 108660.78573 98934.5761 8.95% - 33s H 0 0 106878.00000 98934.5761 7.43% - 33s 0 0 98985.6419 0 3 106878.000 98985.6419 7.38% - 34s H 0 0 104393.46085 98985.6419 5.18% - 34s H 0 0 103196.00000 98985.6419 4.08% - 34s 0 2 98996.3547 0 3 103196.000 98996.3547 4.07% - 36s H 1 1 101648.34368 98996.3547 2.61% 0.0 36s H 2 2 99909.638644 99114.1670 0.80% 269 36s 12 7 99633.3239 10 1 99909.6386 99167.9583 0.74% 387 40s * 25 8 8 99861.000000 99168.2569 0.69% 345 42s H 27 1 99369.000000 99168.2569 0.20% 320 43s * 31 1 6 99346.000000 99346.0000 0.0% 315 44s Cutting planes: Implied bound: 81 Explored 32 nodes (31549 simplex iterations) in 44.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.934600000000e+04, best bound 9.934600000000e+04, gap 0.0%