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track uses_level better as suggested by Arie Gurfinkel

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-11-28 13:43:58 -08:00
parent 1d9b090196
commit 2b0be76685
2 changed files with 13 additions and 12 deletions
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4
src/muz_qe/pdr_context.h
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@ -140,7 +140,7 @@ namespace pdr {
bool propagate_to_next_level(unsigned level);
void add_property(expr * lemma, unsigned lvl); // add property 'p' to state at level.
lbool is_reachable(model_node& n, expr_ref_vector* core);
lbool is_reachable(model_node& n, expr_ref_vector* core, bool& uses_level);
bool is_invariant(unsigned level, expr* co_state, bool inductive, bool& assumes_level, expr_ref_vector* core = 0);
bool check_inductive(unsigned level, expr_ref_vector& state, bool& assumes_level);
@ -309,7 +309,7 @@ namespace pdr {
void close_node(model_node& n);
void check_pre_closed(model_node& n);
void expand_node(model_node& n);
lbool expand_state(model_node& n, expr_ref_vector& cube);
lbool expand_state(model_node& n, expr_ref_vector& cube, bool& uses_level);
void create_children(model_node& n);
expr_ref mk_sat_answer() const;
expr_ref mk_unsat_answer() const;