Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:19:28 2013 Optimize a model with 858 rows, 60918 columns and 121758 nonzeros Presolve time: 0.09s Presolved: 858 rows, 60918 columns, 121758 nonzeros Variable types: 60840 continuous, 78 integer (78 binary) Root relaxation: objective 8.877984e+04, 2079 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 88779.8400 0 9 - 88779.8400 - - 0s H 0 0 94555.000000 88779.8400 6.11% - 0s H 0 0 94197.000000 88779.8400 5.75% - 0s H 0 0 89986.000000 88779.8400 1.34% - 0s 0 0 89154.9921 0 4 89986.0000 89154.9921 0.92% - 0s 0 0 89182.8491 0 6 89986.0000 89182.8491 0.89% - 0s 0 0 89182.8491 0 9 89986.0000 89182.8491 0.89% - 0s 0 0 89182.8491 0 4 89986.0000 89182.8491 0.89% - 1s 0 0 89183.6874 0 5 89986.0000 89183.6874 0.89% - 1s 0 0 89194.1937 0 4 89986.0000 89194.1937 0.88% - 1s 0 0 89194.3513 0 4 89986.0000 89194.3513 0.88% - 1s 0 0 89195.6983 0 4 89986.0000 89195.6983 0.88% - 1s 0 0 89195.7073 0 4 89986.0000 89195.7073 0.88% - 1s 0 0 89195.7115 0 5 89986.0000 89195.7115 0.88% - 1s 0 0 89195.8048 0 4 89986.0000 89195.8048 0.88% - 1s 0 2 89210.6694 0 4 89986.0000 89210.6694 0.86% - 2s H 6 6 89929.000000 89262.1611 0.74% 33.7 2s H 10 9 89715.000000 89262.1611 0.50% 23.6 2s H 11 4 89366.000000 89262.1611 0.12% 22.3 2s * 15 3 14 89344.000000 89262.1611 0.09% 19.7 2s Cutting planes: Implied bound: 145 Flow cover: 6 Explored 19 nodes (5058 simplex iterations) in 2.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.934400000000e+04, best bound 8.934203205128e+04, gap 0.0022%