>D:\glpk\gusek\glpsol.exe --cover --clique --gomory --mir -m "_lt_lotsizing.mod" GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --cover --clique --gomory --mir -m _lt_lotsizing.mod Reading model section from _lt_lotsizing.mod... Reading data section from _lt_lotsizing.mod... 54 lines were read Generating totalcost... Generating y_0... Generating balance... Generating u_cap1... Generating u_cap2... Generating y_T... Model has been successfully generated GLPK Integer Optimizer, v4.65 57 rows, 91 columns, 236 non-zeros 36 integer variables, all of which are binary Preprocessing... 3 constraint coefficient(s) were reduced 54 rows, 89 columns, 142 non-zeros 36 integer variables, all of which are binary Scaling... A: min|aij| = 1.000e+00 max|aij| = 1.970e+03 ratio = 1.970e+03 GM: min|aij| = 1.000e+00 max|aij| = 1.000e+00 ratio = 1.000e+00 EQ: min|aij| = 1.000e+00 max|aij| = 1.000e+00 ratio = 1.000e+00 2N: min|aij| = 8.848e-01 max|aij| = 1.000e+00 ratio = 1.130e+00 Constructing initial basis... Size of triangular part is 54 Solving LP relaxation... GLPK Simplex Optimizer, v4.65 54 rows, 89 columns, 142 non-zeros 0: obj = 6.448690000e+03 inf = 8.650e+03 (18) 36: obj = 3.854571402e+04 inf = 0.000e+00 (0) * 48: obj = 3.188019546e+04 inf = 0.000e+00 (0) OPTIMAL LP SOLUTION FOUND Integer optimization begins... Long-step dual simplex will be used Gomory's cuts enabled MIR cuts enabled Cover cuts enabled No 0-1 knapsack inequalities detected Clique cuts enabled Constructing conflict graph... No conflicts found + 48: mip = not found yet >= -inf (1; 0) Cuts on level 0: gmi = 1; mir = 15; Cuts on level 25: gmi = 1; mir = 15; + 204: >>>>> 3.397772000e+04 >= 3.287518711e+04 3.2% (26; 0) Cuts on level 13: gmi = 1; mir = 16; + 285: >>>>> 3.313111000e+04 >= 3.291403658e+04 0.7% (54; 6) Cuts on level 11: gmi = 1; mir = 16; + 304: >>>>> 3.312791000e+04 >= 3.292318125e+04 0.6% (15; 89) Cuts on level 9: gmi = 1; mir = 16; + 573: >>>>> 3.309604000e+04 >= 3.307097741e+04 < 0.1% (18; 137) + 589: mip = 3.309604000e+04 >= tree is empty 0.0% (0; 201) INTEGER OPTIMAL SOLUTION FOUND Time used: 0.1 secs Memory used: 0.4 Mb (382823 bytes) //Input data for Online Solver at https://www.lutanho.net/plt/lotsize_mcm.html //I u_0 y_0 y_I 18; 0; 0; 0; startup x_min fix var x_max fix var x_max demand y_min fix var y_max 0; 0, 288800,92,960,598600,92,1970; 501; 0, 0, 5, 9999; 0; 0, 313300,90,960,591500,90,1970; 515; 0, 0, 5, 9999; 0; 0, 290500,67,960,590400,67,1970; 467; 0, 0, 5, 9999; 0; 0, 293100,85,960,614100,85,1970; 459; 0, 0, 5, 9999; 0; 0, 287600,89,960,597400,89,1970; 411; 0, 0, 5, 9999; 0; 0, 313000,53,960,603700,53,1970; 474; 0, 0, 5, 9999; 0; 0, 303600,60,960,587100,60,1970; 591; 0, 0, 5, 9999; 0; 0, 292100,96,960,603100,96,1970; 418; 0, 0, 5, 9999; 0; 0, 297100,55,960,604000,55,1970; 497; 0, 0, 5, 9999; 0; 0, 296400,75,960,587700,75,1970; 478; 0, 0, 5, 9999; 0; 0, 302100,61,960,598800,61,1970; 434; 0, 0, 5, 9999; 0; 0, 286100,83,960,586000,83,1970; 425; 0, 0, 5, 9999; 0; 0, 305000,68,960,593800,68,1970; 596; 0, 0, 5, 9999; 0; 0, 310600,72,960,593400,72,1970; 452; 0, 0, 5, 9999; 0; 0, 304300,55,960,591600,55,1970; 545; 0, 0, 5, 9999; 0; 0, 302000,77,960,588600,77,1970; 481; 0, 0, 5, 9999; 0; 0, 290200,87,960,609200,87,1970; 409; 0, 0, 5, 9999; 0; 0, 288300,89,960,594300,89,1970; 497; 0, 0, 5, 9999; --------------------------------------------------------- Total Cost: 33096 Model has been successfully processed >Exit code: 0 Time: 0.720