Build (method = -2) #dp: 3178 Step-3' Graph: 657 vertices and 1964 arcs (0.04s) Step-4' Graph: 98 vertices and 846 arcs (0.04s) #V4/#V3 = 0.15 #A4/#A3 = 0.43 Ready! (0.04s) Optimize a model with 158 rows, 847 columns and 2349 nonzeros Presolve removed 4 rows and 20 columns Presolve time: 0.01s Presolved: 154 rows, 827 columns, 2307 nonzeros Variable types: 0 continuous, 827 integer (0 binary) Found heuristic solution: objective 2613.0000000 Found heuristic solution: objective 2036.0000000 Optimize a model with 154 rows, 827 columns and 2307 nonzeros Presolved: 154 rows, 827 columns, 2307 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.197e+03 Factor NZ : 3.409e+03 Factor Ops : 9.672e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.44440011e+05 -2.19640989e+05 9.47e+05 2.22e-16 1.49e+03 0s 1 3.21299415e+04 -7.26364538e+04 1.29e+05 2.44e-15 2.19e+02 0s 2 5.48727543e+03 -1.67230011e+04 1.22e+04 4.00e-15 2.57e+01 0s 3 2.38355109e+03 -5.20800358e+03 6.78e+02 2.72e-15 4.92e+00 0s 4 1.49002828e+03 -1.47491268e+03 2.34e+01 2.66e-15 1.74e+00 0s 5 1.20458520e+03 2.50656995e+02 6.48e+00 1.86e-15 5.59e-01 0s 6 1.11046229e+03 8.07173357e+02 8.72e-01 2.37e-15 1.77e-01 0s 7 1.08798455e+03 9.13504295e+02 3.47e-01 2.36e-15 1.02e-01 0s 8 1.07599281e+03 9.49339529e+02 1.18e-01 2.98e-15 7.40e-02 0s 9 1.07289458e+03 1.00375210e+03 7.44e-02 3.11e-15 4.04e-02 0s 10 1.06694045e+03 1.04788883e+03 1.27e-02 2.75e-15 1.11e-02 0s 11 1.06411699e+03 1.06143858e+03 1.39e-03 2.44e-15 1.56e-03 0s 12 1.06396619e+03 1.06340901e+03 1.86e-04 2.82e-15 3.25e-04 0s 13 1.06375470e+03 1.06373782e+03 4.36e-06 2.38e-15 9.86e-06 0s 14 1.06375000e+03 1.06375000e+03 2.90e-10 3.21e-15 2.55e-10 0s Barrier solved model in 14 iterations and 0.01 seconds Optimal objective 1.06375000e+03 Root relaxation: objective 1.063750e+03, 269 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1063.75000 0 33 2036.00000 1063.75000 47.8% - 0s H 0 0 1065.0000000 1063.75000 0.12% - 0s H 0 0 1064.0000000 1063.75000 0.02% - 0s Explored 0 nodes (527 simplex iterations) in 0.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.064000000000e+03, best bound 1.064000000000e+03, gap 0.0% Preprocessing time: 0.05 seconds Gurobi run time: 0.05 seconds Total run time: 0.09 seconds Objective: 1064 Solution: 38 x [10, 19] 24 x [19, 37] 14 x [11, 19, 35] 7 x [19, 20, 21] 1 x [19, 20] 6 x [11, 37, 42] 4 x [23, 37, 42] 18 x [5, 37, 38] 3 x [5, 37, 50] 22 x [29, 37, 41] 42 x [26, 28, 53] 25 x [8, 11, 40] 29 x [5, 14, 40] 6 x [2, 4, 56] 28 x [4, 8, 42] 4 x [4, 14, 39] 12 x [25, 26, 57] 1 x [25, 41, 57] 7 x [14, 25, 59] 15 x [25, 41, 59] 10 x [2, 25, 53] 1 x [2, 25, 39] 15 x [8, 25, 30] 36 x [25, 44, 47] 1 x [14, 25, 39] 50 x [32, 52, 56] 16 x [8, 47, 52] 11 x [30, 54, 55] 28 x [17, 34, 50] 42 x [21, 34, 36] 8 x [20, 34, 36] 25 x [7, 17, 32] 4 x [7, 17, 54] 25 x [18, 26, 58] 34 x [6, 58, 60] 18 x [58, 59, 60] 6 x [27, 36, 58] 9 x [6, 58, 59] 63 x [38, 49, 51] 7 x [18, 44, 49] 6 x [18, 47, 49] 19 x [11, 22, 24] 2 x [3, 14, 16] 22 x [3, 5, 16] 50 x [1, 12, 15] 1 x [1, 15, 20] 30 x [13, 46, 50] 36 x [3, 46, 54] 31 x [43, 44, 45] 2 x [31, 33, 54] 4 x [24, 27, 33] 20 x [15, 44, 45] 15 x [15, 31, 59] 10 x [15, 24, 27] 36 x [24, 36, 45] 17 x [9, 24, 48] 36 x [3, 31, 60] 2 x [9, 24, 31] 10 x [24, 31, 60]