Changes between Version 3 and Version 5 of Ticket #19523


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Timestamp:
03/31/16 04:58:38 (4 years ago)
Author:
mkoeppe
Comment:

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  • Ticket #19523 – Description

    v3 v5  
    2323}}}
    2424This ticket is to actually fix the error completely or give a better error message.
     25
     26Also a crash with the COIN backend.
     27
     28And low-level error message with the PPL and InteractiveLP (#20296 ) backends.
     29
     30The CVX backend silently adds a new variable that is accessible only to the backend:.
     31{{{
     32sage: sage: default_mip_solver("cvxopt")
     33sage: sage: p = MixedIntegerLinearProgram()
     34sage: sage: q = MixedIntegerLinearProgram()
     35sage: sage: q.add_constraint(p[0] <= 1)
     36sage: q.number_of_variables()
     371
     38}}}