Gurobi 5.6.3 (linux64) logging started Wed Oct 8 06:52:50 2014 Optimize a model with 60516 rows, 60271 columns and 240345 nonzeros Presolve time: 1.73s Presolved: 60516 rows, 60271 columns, 240345 nonzeros Variable types: 1 continuous, 60270 integer (60270 binary) Found heuristic solution: objective 0.9807658 Found heuristic solution: objective 0.9743178 Found heuristic solution: objective 0.8954457 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 10900 7.7692963e-02 3.095322e+03 0.000000e+00 5s 12714 7.8137018e-02 0.000000e+00 0.000000e+00 8s Root relaxation: objective 7.813702e-02, 12714 iterations, 8.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.07814 0 2262 0.89545 0.07814 91.3% - 11s H 0 0 0.1296886 0.07814 39.8% - 20s 0 0 0.08512 0 1485 0.12969 0.08512 34.4% - 29s H 0 0 0.1292530 0.08512 34.1% - 31s 0 0 0.08516 0 1461 0.12925 0.08516 34.1% - 33s 0 0 0.08651 0 1517 0.12925 0.08651 33.1% - 33s 0 0 0.08839 0 1535 0.12925 0.08839 31.6% - 33s 0 0 0.08861 0 1666 0.12925 0.08861 31.4% - 34s 0 0 0.08923 0 1604 0.12925 0.08923 31.0% - 34s 0 0 0.08934 0 1645 0.12925 0.08934 30.9% - 34s 0 0 0.08937 0 1614 0.12925 0.08937 30.9% - 34s 0 0 0.08939 0 1627 0.12925 0.08939 30.8% - 34s 0 0 0.08939 0 1544 0.12925 0.08939 30.8% - 34s 0 2 0.08939 0 1544 0.12925 0.08939 30.8% - 35s H 27 27 0.1270684 0.09085 28.5% 457 36s * 103 77 18 0.1265181 0.09092 28.1% 262 38s * 117 81 10 0.1264201 0.09095 28.1% 256 38s * 119 79 10 0.1259046 0.09095 27.8% 252 38s * 132 81 9 0.1256558 0.09213 26.7% 245 38s * 141 80 7 0.1253128 0.09218 26.4% 250 39s * 160 76 8 0.1209146 0.09239 23.6% 247 39s 168 66 infeasible 9 0.12091 0.09342 22.7% 261 40s Cutting planes: Gomory: 4 MIR: 67 Zero half: 13 Explored 235 nodes (89741 simplex iterations) in 40.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.209145746418e-01, best bound 1.209145746418e-01, gap 0.0%