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fixes #186, remove ite-lifting from opt_context to detect weighted maxsat

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-08-06 11:52:59 +02:00
parent e59ec5fefd
commit f96c0b6963
8 changed files with 109 additions and 22 deletions
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5
src/ast/pb_decl_plugin.h
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@ -35,6 +35,7 @@ enum pb_op_kind {
OP_PB_LE, // pseudo-Boolean <= (generalizes at_most_k)
OP_PB_GE, // pseudo-Boolean >=
OP_PB_EQ, // equality
OP_PB_AUX_BOOL, // auxiliary internal Boolean variable.
LAST_PB_OP
};
@ -71,6 +72,7 @@ public:
virtual func_decl * mk_func_decl(decl_kind k, unsigned num_parameters, parameter const * parameters,
unsigned arity, sort * const * domain, sort * range);
virtual void get_op_names(svector<builtin_name> & op_names, symbol const & logic);
};
@ -101,6 +103,7 @@ public:
bool is_ge(func_decl* a) const;
bool is_ge(expr* a) const { return is_app(a) && is_ge(to_app(a)->get_decl()); }
bool is_ge(expr* a, rational& k) const;
bool is_aux_bool(expr* e) const { return is_app_of(e, m_fid, OP_PB_AUX_BOOL); }
rational get_coeff(expr* a, unsigned index) const { return get_coeff(to_app(a)->get_decl(), index); }
rational get_coeff(func_decl* a, unsigned index) const;
bool has_unit_coefficients(func_decl* f) const;
@ -111,6 +114,8 @@ public:
bool is_eq(expr* e) const { return is_app(e) && is_eq(to_app(e)->get_decl()); }
bool is_eq(expr* e, rational& k) const;
app* mk_fresh_bool();
private:
rational to_rational(parameter const& p) const;