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fix bugs in incremental operation of sat solver

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-09-27 12:04:54 -07:00
parent caa35f6270
commit 08dcd51594
10 changed files with 84 additions and 58 deletions
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10
src/opt/mus.cpp
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@ -22,6 +22,7 @@ Notes:
#include "smt_literal.h"
#include "mus.h"
#include "ast_pp.h"
#include "ast_util.h"
using namespace opt;
@ -60,13 +61,6 @@ struct mus::imp {
TRACE("opt", tout << idx << ": " << mk_pp(cls, m) << "\n";);
return idx;
}
expr* mk_not(expr* e) {
if (m.is_not(e, e)) {
return e;
}
return m.mk_not(e);
}
lbool get_mus(unsigned_vector& mus) {
// SASSERT: mus does not have duplicates.
@ -92,7 +86,7 @@ struct mus::imp {
core.pop_back();
expr* cls = m_cls2expr[cls_id].get();
expr_ref not_cls(m);
not_cls = mk_not(cls);
not_cls = mk_not(m, cls);
unsigned sz = assumptions.size();
assumptions.push_back(not_cls);
add_core(core, assumptions);