Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:20:50 2013 Optimize a model with 49840 rows, 49140 columns and 196140 nonzeros Presolve removed 70 rows and 0 columns Presolve time: 0.22s Presolved: 49770 rows, 49140 columns, 196070 nonzeros Variable types: 49070 continuous, 70 integer (70 binary) Root relaxation: objective 6.031587e+04, 5695 iterations, 3.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60315.8679 0 57 - 60315.8679 - - 3s H 0 0 100173.00000 60315.8679 39.8% - 5s 0 0 75257.9142 0 14 100173.000 75257.9142 24.9% - 11s H 0 0 92372.178424 75257.9142 18.5% - 11s H 0 0 85956.000000 75257.9142 12.4% - 11s 0 0 77816.8356 0 4 85956.0000 77816.8356 9.47% - 13s H 0 0 82719.952674 77816.8356 5.93% - 13s H 0 0 80851.000000 77816.8356 3.75% - 13s 0 0 77877.8031 0 2 80851.0000 77877.8031 3.68% - 13s H 0 0 78736.054405 77877.8031 1.09% - 13s H 0 0 78473.000000 77877.8031 0.76% - 13s 0 2 77878.2683 0 2 78473.0000 77878.2683 0.76% - 14s H 4 4 78304.846154 77922.8077 0.49% 107 14s 5 5 77936.7119 4 1 78304.8462 77936.7119 0.47% 102 15s H 8 4 78221.000000 77952.4694 0.34% 86.2 15s H 10 5 78048.000000 77952.4694 0.12% 87.4 15s * 25 2 5 77974.000000 77972.0000 0.00% 77.7 16s Cutting planes: Implied bound: 70 Explored 26 nodes (14216 simplex iterations) in 16.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.797400000000e+04, best bound 7.797200000000e+04, gap 0.0026%