Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:50:19 2013 Optimize a model with 73270 rows, 72420 columns and 289170 nonzeros Presolve removed 85 rows and 0 columns Presolve time: 0.34s Presolved: 73185 rows, 72420 columns, 289085 nonzeros Variable types: 72335 continuous, 85 integer (85 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7450 7.1185418e+04 2.441380e+04 0.000000e+00 5s 8930 7.1800691e+04 0.000000e+00 0.000000e+00 9s Root relaxation: objective 7.180069e+04, 8930 iterations, 8.52 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 71800.6907 0 62 - 71800.6907 - - 9s H 0 0 117843.00000 71800.6907 39.1% - 14s H 0 0 101727.00000 71800.6907 29.4% - 40s 0 0 90077.0730 0 21 101727.000 90077.0730 11.5% - 54s H 0 0 101199.00000 90077.0730 11.0% - 55s 0 0 96812.6684 0 9 101199.000 96812.6684 4.33% - 59s 0 0 96969.5091 0 4 101199.000 96969.5091 4.18% - 60s H 0 0 100342.00000 96969.5091 3.36% - 61s 0 0 96989.1577 0 3 100342.000 96989.1577 3.34% - 61s H 0 0 98200.000000 96989.1577 1.23% - 61s 0 0 96991.5074 0 2 98200.0000 96991.5074 1.23% - 61s H 0 0 98182.000000 96991.5074 1.21% - 61s 0 2 96994.5986 0 2 98182.0000 96994.5986 1.21% - 63s H 3 2 97391.764706 97114.5248 0.28% 400 64s * 4 3 3 97142.000000 97124.6503 0.02% 405 64s Cutting planes: Implied bound: 81 MIR: 1 Explored 6 nodes (23547 simplex iterations) in 64.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.714200000000e+04, best bound 9.713664014448e+04, gap 0.0055%