Build (method = -2) #dp: 3866 Step-3' Graph: 94 vertices and 1303 arcs (0.01s) Step-4' Graph: 74 vertices and 1263 arcs (0.02s) #V4/#V3 = 0.79 #A4/#A3 = 0.97 Ready! (0.02s) Optimize a model with 145 rows, 1264 columns and 3650 nonzeros Presolve removed 27 rows and 42 columns Presolve time: 0.02s Presolved: 118 rows, 1222 columns, 3541 nonzeros Variable types: 0 continuous, 1222 integer (0 binary) Found heuristic solution: objective 499.0000000 Found heuristic solution: objective 409.0000000 Optimize a model with 118 rows, 1222 columns and 3541 nonzeros Presolved: 118 rows, 1222 columns, 3541 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.878e+03 Factor NZ : 3.546e+03 Factor Ops : 1.448e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.27933734e+03 -2.09619685e+04 7.73e+04 2.22e-16 7.37e+01 0s 1 1.74886289e+03 -6.94474814e+03 1.15e+04 5.55e-16 1.22e+01 0s 2 5.74984929e+02 -2.28459991e+03 1.14e+03 3.29e-14 1.82e+00 0s 3 3.66996019e+02 -7.55728275e+02 4.75e+01 9.99e-15 4.70e-01 0s 4 3.01174324e+02 -2.13300722e+02 8.13e+00 3.66e-15 2.09e-01 0s 5 2.53150647e+02 -8.71936323e+01 2.91e+00 2.22e-15 1.37e-01 0s 6 2.34733296e+02 1.40611448e+02 1.27e+00 6.66e-16 3.79e-02 0s 7 2.24100221e+02 1.78530657e+02 4.34e-01 3.96e-16 1.83e-02 0s 8 2.17659988e+02 2.06115940e+02 6.30e-02 5.55e-16 4.64e-03 0s 9 2.16562881e+02 2.11586294e+02 3.74e-02 4.27e-16 2.00e-03 0s 10 2.15488652e+02 2.13136770e+02 1.42e-02 4.44e-16 9.45e-04 0s 11 2.14917219e+02 2.14274469e+02 3.00e-03 4.44e-16 2.58e-04 0s 12 2.14738209e+02 2.14709027e+02 6.18e-05 3.33e-16 1.17e-05 0s 13 2.14730179e+02 2.14730103e+02 1.25e-07 7.77e-16 3.03e-08 0s 14 2.14730159e+02 2.14730159e+02 2.27e-13 4.34e-16 3.07e-14 0s Barrier solved model in 14 iterations and 0.01 seconds Optimal objective 2.14730159e+02 Root relaxation: objective 2.147302e+02, 174 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 214.73016 0 48 409.00000 214.73016 47.5% - 0s H 0 0 218.0000000 214.73016 1.50% - 0s H 0 0 217.0000000 214.73016 1.05% - 0s 0 0 214.73016 0 52 217.00000 214.73016 1.05% - 0s H 0 0 216.0000000 214.73016 0.59% - 0s H 0 0 215.0000000 214.73016 0.13% - 0s Cutting planes: Gomory: 2 Zero half: 1 Explored 0 nodes (395 simplex iterations) in 0.15 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.150000000000e+02, best bound 2.150000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.15 seconds Total run time: 0.18 seconds Objective: 215 Solution: 1 x [21, 71] 5 x [20, 70] 6 x [21, 69] 7 x [24, 68] 1 x [22, 68] 7 x [25, 67] 4 x [23, 66] 1 x [22, 66] 4 x [27, 65] 5 x [26, 65] 3 x [28, 64] 1 x [19, 64] 10 x [29, 63] 5 x [30, 62] 2 x [29, 62] 3 x [31, 61] 1 x [1, 1, 61] 5 x [32, 60] 3 x [33, 59] 5 x [1, 3, 59] 6 x [34, 58] 6 x [35, 57] 3 x [36, 56] 11 x [37, 55] 1 x [3, 5, 55] 5 x [38, 54] 2 x [4, 5, 54] 10 x [39, 53] 11 x [40, 52] 7 x [41, 51] 1 x [1, 9, 51] 1 x [6, 6, 51] 4 x [42, 50] 3 x [5, 9, 49] 2 x [7, 7, 49] 1 x [44, 48] 4 x [4, 11, 48] 1 x [6, 9, 48] 3 x [45, 47] 6 x [2, 14, 47] 1 x [5, 11, 47] 5 x [46, 46] 3 x [6, 12, 45] 6 x [8, 10, 45] 1 x [1, 18, 44] 1 x [3, 16, 44] 1 x [6, 12, 44] 1 x [6, 14, 43] 3 x [7, 13, 43] 1 x [7, 16, 40] 1 x [5, 19, 39] 1 x [12, 12, 39] 1 x [5, 21, 36] 2 x [9, 18, 36] 2 x [11, 17, 35] 1 x [11, 18, 34] 4 x [15, 15, 33] 1 x [12, 19, 32] 1 x [14, 17, 32] 1 x [15, 16, 32] 3 x [16, 16, 31] 1 x [15, 19, 29] 1 x [6, 22, 28] 1 x [17, 18, 28] 2 x [18, 22, 23] 1 x [6, 22, 23] 1 x [19, 19, 23]