Build (method = -2) #dp: 2311 Step-3' Graph: 418 vertices and 1247 arcs (0.02s) Step-4' Graph: 128 vertices and 667 arcs (0.02s) #V4/#V3 = 0.31 #A4/#A3 = 0.53 Ready! (0.02s) Optimize a model with 188 rows, 668 columns and 1752 nonzeros Presolve removed 48 rows and 49 columns Presolve time: 0.01s Presolved: 140 rows, 619 columns, 1640 nonzeros Variable types: 0 continuous, 619 integer (444 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 38.0000000 Optimize a model with 140 rows, 619 columns and 1640 nonzeros Presolved: 140 rows, 619 columns, 1640 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.100e+02 Factor NZ : 3.204e+03 Factor Ops : 8.838e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.96851641e+03 -1.65478680e+03 2.42e+03 2.97e-01 1.81e+01 0s 1 3.86779415e+02 -7.27964407e+02 3.26e+02 4.44e-16 2.81e+00 0s 2 9.38938653e+01 -1.79738869e+02 4.31e+01 6.66e-16 4.34e-01 0s 3 4.36905796e+01 -2.24257803e+01 5.98e+00 4.44e-16 7.80e-02 0s 4 3.65521761e+01 1.92991361e+01 9.43e-01 4.23e-16 1.57e-02 0s 5 3.49863598e+01 2.74245949e+01 2.80e-01 3.33e-16 6.43e-03 0s 6 3.46170162e+01 3.26785524e+01 9.16e-02 4.44e-16 1.64e-03 0s 7 3.45008345e+01 3.44902953e+01 3.03e-04 3.33e-16 8.70e-06 0s 8 3.45000010e+01 3.44999903e+01 8.77e-15 3.33e-16 8.68e-09 0s 9 3.45000000e+01 3.45000000e+01 7.11e-15 4.44e-16 8.78e-15 0s Barrier solved model in 9 iterations and 0.01 seconds Optimal objective 3.45000000e+01 Root relaxation: objective 3.450000e+01, 382 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34.50000 0 17 38.00000 34.50000 9.21% - 0s H 0 0 35.0000000 34.50000 1.43% - 0s Explored 0 nodes (490 simplex iterations) in 0.03 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.03 seconds Total run time: 0.06 seconds Objective: 35 Solution: 1 x [4] 1 x [47] 1 x [33] 1 x [51] 1 x [18] 1 x [48, 56] 1 x [24] 1 x [28] 1 x [5] 1 x [41] 1 x [36, 50, 58] 1 x [14, 37] 1 x [1, 2, 44] 1 x [16] 1 x [32] 1 x [38] 1 x [17, 30] 1 x [46] 1 x [15, 22] 1 x [13] 1 x [39] 1 x [40, 60] 1 x [9, 43] 1 x [34, 49] 1 x [6, 27] 1 x [20, 52] 1 x [8, 21] 1 x [7, 57] 1 x [23, 55] 1 x [10, 11, 12] 1 x [31, 54, 59] 1 x [25, 53] 1 x [29, 42] 1 x [19, 26, 35] 1 x [3, 45]