#7573: Sage crashes if insufficient data is provided for MIP
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Reporter: malb | Owner: jkantor
Type: defect | Status: positive_review
Priority: major | Milestone: sage-4.3
Component: numerical | Keywords:
Work_issues: | Author: Martin Albrecht
Upstream: N/A | Reviewer:
Merged: |
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Description changed by ncohen:
Old description:
> This crashes Sage:
>
> {{{
> sage: g = graphs.PetersenGraph()
> sage: p = MixedIntegerLinearProgram(maximization=True)
> sage: b = p.new_variable()
> sage: p.set_objective(sum([b[v] for v in g]))
> sage: p.set_binary(b)
> sage: p.solve(objective_only=True)
> }}}
New description:
This crashes Sage:
{{{
sage: g = graphs.PetersenGraph()
sage: p = MixedIntegerLinearProgram(maximization=True)
sage: b = p.new_variable()
sage: p.set_objective(sum([b[v] for v in g]))
sage: p.set_binary(b)
sage: p.solve(objective_only=True)
}}}
Depends on #7270 !!!!!!!!!!!!!!!!!!!!
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7573#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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