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better proof mining for Farkas

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-10-12 17:12:43 -07:00
parent 89ca9aa5bd
commit 2087c59084
11 changed files with 227 additions and 103 deletions
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4
lib/ast.h
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@ -1823,7 +1823,9 @@ public:
bool is_term_ite(expr const * n) const { return is_ite(n) && !is_bool(n); }
bool is_true(expr const * n) const { return n == m_true; }
bool is_false(expr const * n) const { return n == m_false; }
bool is_complement_core(expr const * n1, expr const * n2) const { return (is_true(n1) && is_false(n2)) || (is_not(n1) && to_app(n1)->get_arg(0) == n2); }
bool is_complement_core(expr const * n1, expr const * n2) const {
return (is_true(n1) && is_false(n2)) || (is_not(n1) && to_app(n1)->get_arg(0) == n2);
}
bool is_complement(expr const * n1, expr const * n2) const { return is_complement_core(n1, n2) || is_complement_core(n2, n1); }
bool is_or(func_decl const * d) const { return is_decl_of(d, m_basic_family_id, OP_OR); }