Opened 9 years ago

Closed 7 weeks ago

#97 closed defect (migrated)

CBC version 2.4.2, OSI version 0.102.3 - OsiCbc declares problem infeasible that Cbc solves to optimal fine (tiny problem)

Reported by: mgalati Owned by:
Priority: major Component: Cbc
Version: Keywords:
Cc:

Description

The code to repeat the issue can be found in DIP repository at bugs/OsiCbc.

[magala@orclus71 OsiCbc]$ ./a.out
Clp0000I Optimal - objective value 2
Cbc0009I Objective coefficients multiple of 1
Clp0000I Optimal - objective value 2
Cbc0004I Integer solution of 2 found after 0 iterations and 0 nodes (0.00 seconds)
Cbc0001I Search completed - best objective 2, took 0 iterations and 0 nodes (0.00 seconds)
Cbc0035I Maximum depth 0, 0 variables fixed on reduced cost
Clp0000I Optimal - objective value 2
Clp0000I Optimal - objective value 2
Clp0006I 0  Obj 2.57476 Dual inf 0.10562 (1)
Clp0006I 2  Obj 2.57476
Clp0000I Optimal - objective value 2.57476
Cbc0006I The LP relaxation is infeasible or too expensive
a.out: main.cpp:47: int main(int, char**): Assertion `!osi.isProvenPrimalInfeasible()' failed.
Aborted

Change History (2)

comment:2 Changed 7 weeks ago by stefan

  • Component set to Cbc
  • Resolution set to migrated
  • Status changed from new to closed

This ticket has been migrated to GitHub and will be resolved there: https://github.com/coin-or/Cbc/issues/97

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