Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:10:43 2013 Optimize a model with 68224 rows, 67404 columns and 269124 nonzeros Presolve removed 82 rows and 0 columns Presolve time: 0.31s Presolved: 68142 rows, 67404 columns, 269042 nonzeros Variable types: 67322 continuous, 82 integer (82 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7852 7.1256992e+04 8.004971e+04 0.000000e+00 5s 9319 7.1886004e+04 0.000000e+00 0.000000e+00 8s Root relaxation: objective 7.188600e+04, 9319 iterations, 8.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 71886.0038 0 66 - 71886.0038 - - 8s H 0 0 127048.00000 71886.0038 43.4% - 14s 0 0 91357.3760 0 10 127048.000 91357.3760 28.1% - 25s H 0 0 110386.28948 91357.3760 17.2% - 25s H 0 0 104638.00000 91357.3760 12.7% - 25s 0 0 93275.2887 0 9 104638.000 93275.2887 10.9% - 27s H 0 0 101551.00000 93275.2887 8.15% - 28s 0 0 93787.5242 0 4 101551.000 93787.5242 7.64% - 29s H 0 0 97030.285828 93787.5242 3.34% - 29s H 0 0 95909.000000 93787.5242 2.21% - 29s 0 0 93922.5386 0 2 95909.0000 93922.5386 2.07% - 29s 0 2 93935.4832 0 2 95909.0000 93935.4832 2.06% - 31s H 4 3 94258.000000 93982.8889 0.29% 107 31s * 19 2 18 94127.000000 94021.2000 0.11% 92.8 33s * 22 1 8 94073.000000 94039.6542 0.04% 86.1 34s Cutting planes: Implied bound: 79 Explored 26 nodes (21788 simplex iterations) in 34.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.407300000000e+04, best bound 9.407300000000e+04, gap 0.0%