Hi, I am relatively new at using Clp, so please forgive my ignorance. <br>I am using ClpSimplex (primal) to solve a series of independent lps but frequently I end up with such an output, where even though the objective doesn't seem to change, the algorithm doesn't terminate. I wanted to know if this implies that the problem is degenerate, or something is wrong with my implementation. <br>
<br>There are other instances where the lp finishes correctly to optimal solutions. <br><br>Any help would be greatly appreciated. Thanks! <br><br>Raghu <br><br>Clp0006I 406 Obj 772649 Primal inf 0.000126728 (732) Dual inf 0.00268515 (4)<br>
Clp0006I 408 Obj 772678 Primal inf 0.000126819 (731) Dual inf 0.0260005 (5)<br>Clp0006I 408 Obj 772678 Primal inf 0.000126819 (731)<br>Clp0001I Primal infeasible - objective value 772678<br>Clp0034I Pass 20 took 408 iterations, objective 772678, dual infeasibilities 3.20959e+14( 104734)<br>
Clp0006I 0 Obj 21928.6 Dual inf 1.53563e+09 (93726)<br>Clp0006I 286 Obj 21928.6 Dual inf 6.28598e+08 (103375)<br>Clp0006I 572 Obj 21928.6 Dual inf 6.28153e+08 (109279)<br>Clp0006I 858 Obj 21928.6 Dual inf 7.51938e+08 (104946)<br>
Clp0006I 1144 Obj 21928.6 Primal inf 1.5198e-06 (88) Dual inf 1.61512e+16 (110739)<br>Clp0006I 1430 Obj 21928.6 Primal inf 2.99672e-06 (89) Dual inf 1.44544e+16 (107683)<br>Clp0006I 1716 Obj 21928.6 Primal inf 7.03824e-06 (186) Dual inf 2.88028e+16 (108821)<br>
Clp0006I 2002 Obj 21928.6 Primal inf 4.1197e-06 (172) Dual inf 2.78488e+16 (110344)<br>Clp0006I 2288 Obj 21928.6 Primal inf 3.97076e-06 (142) Dual inf 1.97809e+16 (104632)<br>Clp0006I 2574 Obj 21928.6 Primal inf 1.06905e-05 (310) Dual inf 5.24583e+16 (105880)<br>
Clp0006I 2860 Obj 21928.6 Primal inf 3.09492e-05 (522) Dual inf 1.25178e+17 (111335)<br>Clp0006I 3146 Obj 21928.6 Primal inf 7.71531e-06 (233) Dual inf 3.12771e+16 (110374)<br>Clp0006I 3432 Obj 21928.6 Primal inf 1.22927e-06 (64) Dual inf 8.1049e+15 (111837)<br>
Clp0006I 3718 Obj 21928.6 Primal inf 8.62081e-06 (364) Dual inf 4.23991e+16 (116000)<br>Clp0006I 4004 Obj 21928.6 Primal inf 1.58615e-05 (400) Dual inf 3.78093e+16 (111921)<br>Clp0006I 4290 Obj 21928.6 Primal inf 3.96591e-05 (703) Dual inf 1.00593e+17 (114464)<br>
Clp0006I 4576 Obj 21928.6 Primal inf 9.574e-06 (278) Dual inf 9.14069e+16 (116026)<br>Clp0006I 4862 Obj 21928.6 Primal inf 5.37831e-06 (177) Dual inf 2.07954e+16 (117461)<br>Clp0006I 5148 Obj 21928.6 Primal inf 1.72535e-05 (398) Dual inf 1.38148e+17 (112503)<br>
Clp0006I 5434 Obj 21928.6 Primal inf 3.70437e-06 (170) Dual inf 3.62376e+16 (114824)<br>Clp0006I 5720 Obj 21928.6 Primal inf 2.0438e-05 (466) Dual inf 1.08007e+17 (121401)<br>Clp0006I 6006 Obj 21928.6 Primal inf 2.46369e-06 (109) Dual inf 1.72894e+16 (119026)<br>
Clp0006I 6292 Obj 21928.6 Primal inf 1.10956e-05 (317) Dual inf 4.72236e+16 (120515)<br>Clp0006I 6578 Obj 21928.6 Primal inf 7.21757e-06 (248) Dual inf 2.81586e+16 (114879)<br>Clp0006I 6864 Obj 21928.6 Primal inf 4.36313e-05 (751) Dual inf 1.3996e+17 (120410)<br>
Clp0006I 7150 Obj 21928.6 Primal inf 8.52594e-06 (290) Dual inf 8.37034e+16 (123574)<br>Clp0006I 7436 Obj 21928.6 Primal inf 3.17695e-05 (567) Dual inf 1.22288e+17 (119391)<br>Clp0006I 7722 Obj 21928.6 Primal inf 5.04181e-06 (177) Dual inf 3.21725e+16 (118725)<br>
Clp0006I 8008 Obj 21928.6 Primal inf 9.49529e-06 (261) Dual inf 3.26279e+16 (123801)<br>Clp0006I 8294 Obj 21928.6 Primal inf 5.12685e-06 (224) Dual inf 2.84582e+16 (122091)<br>Clp0006I 8580 Obj 21928.6 Primal inf 3.21936e-05 (614) Dual inf 1.32448e+17 (122134)<br>
Clp0006I 8866 Obj 21928.6 Primal inf 2.0372e-05 (422) Dual inf 1.14913e+17 (118697)<br>Clp0006I 9152 Obj 21928.6 Primal inf 1.17878e-05 (341) Dual inf 6.88182e+16 (120097)<br>Clp0006I 9438 Obj 21928.6 Primal inf 1.29273e-05 (339) Dual inf 5.48133e+16 (129122)<br>
Clp0006I 9724 Obj 21928.6 Primal inf 3.44663e-05 (632) Dual inf 1.1567e+17 (120420)<br>Clp0006I 10010 Obj 21928.6 Primal inf 1.68309e-05 (433) Dual inf 9.41341e+16 (121109)<br>Clp0006I 10296 Obj 21928.6 Primal inf 2.72704e-05 (588) Dual inf 1.42313e+17 (123832)<br>
Clp0006I 10582 Obj 21928.6 Primal inf 1.52432e-05 (422) Dual inf 1.03183e+17 (116874)<br>Clp0006I 10868 Obj 21928.6 Primal inf 6.48892e-06 (251) Dual inf 2.73216e+16 (120148)<br>Clp0006I 11154 Obj 21928.6 Primal inf 2.62665e-05 (555) Dual inf 9.66086e+16 (119815)<br>
Clp0006I 11440 Obj 21928.6 Primal inf 5.69419e-05 (808) Dual inf 1.89219e+17 (125062)<br>Clp0006I 11726 Obj 21928.6 Primal inf 3.29175e-05 (617) Dual inf 1.78859e+17 (123929)<br>Clp0006I 12012 Obj 21928.6 Primal inf 2.36275e-05 (558) Dual inf 7.27947e+16 (119947)<br>
Clp0006I 12298 Obj 21928.6 Primal inf 4.79747e-06 (180) Dual inf 2.71587e+16 (121841)<br>Clp0006I 12584 Obj 21928.6 Primal inf 5.91471e-06 (238) Dual inf 4.9516e+16 (122346)<br>Clp0006I 12870 Obj 21928.6 Primal inf 1.57108e-05 (423) Dual inf 6.34562e+16 (123919)<br>
Clp0006I 13156 Obj 21928.6 Primal inf 1.14551e-05 (272) Dual inf 7.11369e+16 (125086)<br>Clp0006I 13442 Obj 21928.6 Primal inf 1.90404e-05 (426) Dual inf 1.5706e+17 (124454)<br>Clp0006I 13728 Obj 21928.6 Primal inf 1.82882e-05 (436) Dual inf 1.7584e+17 (121187)<br>
Clp0006I 14014 Obj 21928.6 Primal inf 1.17483e-05 (320) Dual inf 4.74952e+16 (125373)<br>Clp0006I 14300 Obj 21928.6 Primal inf 3.00133e-05 (599) Dual inf 1.33231e+17 (125045)<br>Clp0006I 14586 Obj 21928.6 Primal inf 3.60458e-05 (658) Dual inf 1.57479e+17 (122796)<br>
Clp0006I 14872 Obj 21928.6 Primal inf 4.39828e-06 (154) Dual inf 2.39899e+16 (128197)<br><br>