Decision Optimization

Decision Optimization

Delivers prescriptive analytics capabilities and decision intelligence to improve decision-making.


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  • 1.  CPLEX status code 109-FailFeas for a MIP model

    Posted 07/25/10 09:37 AM

    Originally posted by: fd-mk


    Hi,

    I'm using CPLEX 10.1 for solving my integer programming model. The model includes binary variables and integer variables. I get an integer feasible solution, but it is not optimal solution. Because i know the optimal solution. I understand, CPLEX terminated before finding/reaching optimal solution. CPLEX status code of MIP is 109: Terminated because of an error, but integer solution exists.

    I also check whether default time limit, memory limit,tree limits are also enough or not.I still don't understand what is the error.

    How can i do for my problem? I need help as soon as possible!

    thanks

    Melike Kaya
    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 2.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 03/31/16 06:54 AM

    Originally posted by: OstaB


    Hi,

    I experience the same problem and we would be grateful if someone has an answer to this issue.

    Thanks in advance


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 3.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 03/31/16 08:10 AM

    Hi,

    which version do you use ?

    regards

    NB;

    Can you attach your model ?


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 4.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 03/31/16 01:57 PM

    Originally posted by: OstaB


    Hi,

    We are using Cplex 12.6.2 

    Thanks in advance


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 5.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 03/31/16 02:04 PM

    Is your model in OPL ?

    Can you post it ?

    regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 6.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 04/01/16 03:57 AM

    Originally posted by: OstaB


    Hi,

    The model is written in C with callable library and is too long to be presented here.

    regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 7.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 04/01/16 04:59 AM

    Originally posted by: OstaB


    By examining the messages displayed by Cplex during execution, I found "out of memory" message.

    I think that the issue is related to memory parameters.

    Regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer


  • 8.  Re: CPLEX status code 109-FailFeas for a MIP model

    Posted 04/01/16 05:08 AM

    Hi,

    have you looked at the technote http://www-01.ibm.com/support/docview.wss?uid=swg21400051 ?

    Do you use a 32 or 64 bits machine ?

    Can you try with setting CPXPARAM_Threads to 1 ?

    regards


    #DecisionOptimization
    #OPLusingCPLEXOptimizer