Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:43:31 2013 Optimize a model with 54166 rows, 53436 columns and 213306 nonzeros Presolve removed 73 rows and 0 columns Presolve time: 0.24s Presolved: 54093 rows, 53436 columns, 213233 nonzeros Variable types: 53363 continuous, 73 integer (73 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7574 6.8093259e+04 5.179777e+03 0.000000e+00 5s Warning: Markowitz tolerance tightened to 0.03125 9574 6.9149589e+04 0.000000e+00 0.000000e+00 9s Root relaxation: objective 6.914959e+04, 9574 iterations, 8.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69149.5889 0 58 - 69149.5889 - - 9s H 0 0 124821.00000 69149.5889 44.6% - 14s 0 0 93401.8234 0 7 124821.000 93401.8234 25.2% - 24s H 0 0 107178.29374 93401.8234 12.9% - 24s H 0 0 101299.00000 93401.8234 7.80% - 24s 0 0 95779.0551 0 6 101299.000 95779.0551 5.45% - 26s H 0 0 100550.00000 95779.0551 4.74% - 26s 0 0 96611.4016 0 5 100550.000 96611.4016 3.92% - 27s 0 0 96643.0608 0 4 100550.000 96643.0608 3.89% - 27s 0 2 96647.5881 0 4 100550.000 96647.5881 3.88% - 28s H 3 3 98747.045455 96740.2831 2.03% 99.0 29s H 4 4 97374.772727 96759.5871 0.63% 167 29s H 6 6 97312.382787 96759.5871 0.57% 221 29s 6 7 96978.0582 5 2 97312.3828 96759.5871 0.57% 300 30s * 8 7 7 97044.000000 96759.5871 0.29% 303 30s H 22 3 96994.000000 96903.7921 0.09% 234 31s H 23 4 96959.972727 96903.7921 0.06% 233 31s * 24 4 7 96951.000000 96903.7921 0.05% 224 31s Cutting planes: Gomory: 1 Implied bound: 72 Explored 28 nodes (28026 simplex iterations) in 32.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.695100000000e+04, best bound 9.694176537025e+04, gap 0.0095%