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special case branching

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-04-05 11:57:49 +02:00
parent ed1a5797fb
commit c454b81b2c
3 changed files with 201 additions and 50 deletions
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6
src/smt/theory_seq.h
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@ -359,6 +359,8 @@ namespace smt {
// final check
bool simplify_and_solve_eqs(); // solve unitary equalities
bool reduce_length_eq();
bool branch_unit_variable(); // branch on XYZ = abcdef
bool branch_binary_variable(); // branch on abcX = Ydefg
bool branch_variable_mb(); // branch on a variable, model based on length
bool branch_variable(); // branch on a variable
bool split_variable(); // split a variable
@ -368,6 +370,10 @@ namespace smt {
bool check_length_coherence(expr* e);
bool fixed_length();
bool fixed_length(expr* e);
void branch_unit_variable(dependency* dep, expr* X, expr_ref_vector const& units);
bool branch_variable(eq const& e);
bool branch_binary_variable(eq const& e);
bool is_unit_eq(expr_ref_vector const& ls, expr_ref_vector const& rs);
bool propagate_length_coherence(expr* e);
bool split_lengths(dependency* dep,
expr_ref_vector const& ls, expr_ref_vector const& rs,