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working on pdr

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-10-14 00:24:17 -07:00
parent 16cfb3895d
commit 990b93c2fd
6 changed files with 64 additions and 50 deletions
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7
lib/pdr_context.h
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@ -171,10 +171,11 @@ namespace pdr {
model_ref m_model;
ptr_vector<model_node> m_children;
unsigned m_level;
unsigned m_orig_level;
bool m_closed;
public:
model_node(model_node* parent, expr_ref& state, pred_transformer& pt, unsigned level):
m_parent(parent), m_pt(pt), m_state(state), m_model(0), m_level(level), m_closed(false) {
m_parent(parent), m_pt(pt), m_state(state), m_model(0), m_level(level), m_orig_level(level), m_closed(false) {
if (m_parent) {
m_parent->m_children.push_back(this);
SASSERT(m_parent->m_level == level+1);
@ -183,6 +184,8 @@ namespace pdr {
}
void set_model(model_ref& m) { m_model = m; }
unsigned level() const { return m_level; }
unsigned orig_level() const { return m_orig_level; }
void increase_level() { ++m_level; }
expr* state() const { return m_state; }
ptr_vector<model_node> const& children() { return m_children; }
pred_transformer& pt() const { return m_pt; }
@ -245,6 +248,8 @@ namespace pdr {
expr_ref get_trace() const;
proof_ref get_proof_trace(context const& ctx) const;
void backtrack_level(bool uses_level, model_node& n);
};
struct model_exception { };