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adding trail/levels

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-29 14:45:51 -08:00
parent e22c657811
commit 8d20310758
21 changed files with 199 additions and 7 deletions
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7
src/solver/solver.cpp
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@ -251,7 +251,8 @@ void solver::updt_params(params_ref const & p) {
}
expr_ref_vector solver::get_units(ast_manager& m) {
expr_ref_vector solver::get_units() {
ast_manager& m = get_manager();
expr_ref_vector fmls(m), result(m), tmp(m);
get_assertions(fmls);
obj_map<expr, bool> units;
@ -284,7 +285,8 @@ expr_ref_vector solver::get_units(ast_manager& m) {
}
expr_ref_vector solver::get_non_units(ast_manager& m) {
expr_ref_vector solver::get_non_units() {
ast_manager& m = get_manager();
expr_ref_vector result(m), fmls(m);
get_assertions(fmls);
family_id bfid = m.get_basic_family_id();
@ -320,6 +322,7 @@ expr_ref_vector solver::get_non_units(ast_manager& m) {
return result;
}
lbool solver::check_sat(unsigned num_assumptions, expr * const * assumptions) {
lbool r = l_undef;
try {