Build (method = -2) #dp: 18982 Step-3' Graph: 187 vertices and 1307 arcs (0.09s) Step-4' Graph: 92 vertices and 1117 arcs (0.09s) #V4/#V3 = 0.49 #A4/#A3 = 0.85 Ready! (0.09s) Optimize a model with 152 rows, 1118 columns and 3177 nonzeros Presolve removed 3 rows and 5 columns Presolve time: 0.01s Presolved: 149 rows, 1113 columns, 3167 nonzeros Variable types: 0 continuous, 1113 integer (0 binary) Found heuristic solution: objective 1933.0000000 Optimize a model with 149 rows, 1113 columns and 3167 nonzeros Presolved: 149 rows, 1113 columns, 3167 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.985e+03 Factor NZ : 4.241e+03 Factor Ops : 1.618e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.00412470e+05 -3.62098405e+05 1.26e+05 2.22e-16 1.18e+03 0s 1 2.63880595e+04 -6.73660202e+04 2.19e+04 6.66e-16 1.98e+02 0s 2 5.24168517e+03 -2.52993586e+04 2.44e+03 4.69e-14 2.91e+01 0s 3 2.50009640e+03 -6.04818652e+03 1.94e+02 5.77e-15 4.57e+00 0s 4 1.39460906e+03 -2.28548346e+03 3.18e+01 2.89e-15 1.70e+00 0s 5 1.02991300e+03 -6.47743567e+02 1.59e+01 1.55e-15 7.65e-01 0s 6 8.75875316e+02 8.60169594e+01 7.84e+00 5.66e-16 3.55e-01 0s 7 8.22418055e+02 2.94904594e+02 4.82e+00 6.66e-16 2.36e-01 0s 8 7.83967410e+02 6.86374686e+02 1.89e+00 6.85e-16 4.34e-02 0s 9 7.67283215e+02 7.47960397e+02 8.04e-01 5.70e-16 8.51e-03 0s 10 7.54877989e+02 7.54258570e+02 9.59e-12 6.37e-16 2.71e-04 0s 11 7.54750142e+02 7.54749205e+02 2.30e-12 6.71e-16 4.10e-07 0s 12 7.54750000e+02 7.54749999e+02 3.22e-12 6.00e-16 4.10e-10 0s Barrier solved model in 12 iterations and 0.01 seconds Optimal objective 7.54750000e+02 Root relaxation: objective 7.547500e+02, 921 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754.75000 0 13 1933.00000 754.75000 61.0% - 0s H 0 0 755.0000000 754.75000 0.03% - 0s Explored 0 nodes (1065 simplex iterations) in 0.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.550000000000e+02, best bound 7.550000000000e+02, gap 0.0% Preprocessing time: 0.10 seconds Gurobi run time: 0.05 seconds Total run time: 0.16 seconds Objective: 755 Solution: 3 x [12, 16, 30, 52] 74 x [12, 50, 54, 57] 2 x [13, 20, 59, 60] 23 x [5, 22, 43, 60] 2 x [5, 22, 46, 60] 65 x [23, 24, 28, 44] 31 x [22, 25, 31, 44] 10 x [6, 11, 21, 25] 3 x [6, 17, 22, 45] 2 x [41, 42, 48, 53] 16 x [1, 23, 41, 53] 14 x [20, 27, 31, 53] 65 x [3, 37, 52, 53] 34 x [4, 42, 51, 58] 1 x [15, 22, 42, 58] 7 x [42, 47, 55, 58] 1 x [42, 49, 54, 58] 1 x [42, 54, 58] 2 x [24, 26, 40, 46] 8 x [14, 24, 46, 59] 18 x [39, 40, 41, 46] 5 x [39, 39, 41, 46] 47 x [10, 11, 14, 48] 17 x [9, 15, 58, 58] 1 x [11, 22, 29, 51] 10 x [10, 22, 32, 35] 41 x [1, 7, 38, 46] 1 x [2, 22, 29, 36] 1 x [2, 29, 35, 56] 59 x [18, 19, 33, 36] 5 x [7, 18, 35, 36] 5 x [7, 17, 30, 49] 75 x [15, 29, 49, 56] 1 x [19, 20, 35, 52] 81 x [21, 34, 35, 55] 7 x [5, 37, 46, 55] 17 x [7, 8, 45, 49]