Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:04:11 2012 Optimize a model with 609 rows, 544 columns and 2064 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 609 rows, 527 columns, 2047 nonzeros Variable types: 0 continuous, 527 integer (526 binary) Found heuristic solution: objective 117.0000000 Root relaxation: objective 0.000000e+00, 295 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 218 117.00000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s 0 0 0.50063 0 219 82.00000 0.50063 99.4% - 0s H 0 0 75.0000000 0.50063 99.3% - 0s 0 0 1.09938 0 220 75.00000 1.09938 98.5% - 0s 0 0 1.36729 0 221 75.00000 1.36729 98.2% - 0s H 0 0 73.0000000 1.36729 98.1% - 0s 0 0 1.36870 0 222 73.00000 1.36870 98.1% - 0s 0 0 1.36870 0 222 73.00000 1.36870 98.1% - 0s 0 2 1.37103 0 222 73.00000 1.37103 98.1% - 0s H 27 27 71.0000000 3.00676 95.8% 47.8 0s * 54 38 30 27.0000000 3.00676 88.9% 37.1 0s * 187 117 17 26.0000000 7.19753 72.3% 46.0 0s 2501 729 24.97041 25 215 26.00000 16.01111 38.4% 28.4 5s H 3006 736 25.0000000 16.82474 32.7% 27.6 5s 5375 722 21.03109 23 233 25.00000 19.67143 21.3% 26.3 10s Explored 8342 nodes (203565 simplex iterations) in 14.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%