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fix #4116

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delta has to be computed based on Simplex tableau not on difference graph.
This commit is contained in:
Nikolaj Bjorner 2020-04-27 17:07:12 -07:00
parent 3a63c3751e
commit 4f462925a0
7 changed files with 91 additions and 21 deletions
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3
src/math/simplex/simplex.h
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@ -133,6 +133,8 @@ namespace simplex {
void set_upper(var_t var, eps_numeral const& b);
void get_lower(var_t var, scoped_eps_numeral& b) const { b = m_vars[var].m_lower; }
void get_upper(var_t var, scoped_eps_numeral& b) const { b = m_vars[var].m_upper; }
eps_numeral const& get_lower(var_t var) const { return m_vars[var].m_lower; }
eps_numeral const& get_upper(var_t var) const { return m_vars[var].m_upper; }
bool above_lower(var_t var, eps_numeral const& b) const;
bool below_upper(var_t var, eps_numeral const& b) const;
bool below_lower(var_t v) const;
@ -198,6 +200,7 @@ namespace simplex {
bool is_feasible() const;
};
void ensure_rational_solution(simplex<mpq_ext>& s);
};
#endif