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better encodings for at-most-1, #755

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-10-10 23:46:03 -07:00
parent 5d9820f3e2
commit 8d2b70a5e2
17 changed files with 232 additions and 253 deletions
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25
src/test/sorting_network.cpp
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@ -332,7 +332,32 @@ void test_sorting5(unsigned n, unsigned k) {
test_sorting_ge(n, k);
}
void test_at_most_1(unsigned n) {
ast_manager m;
reg_decl_plugins(m);
expr_ref_vector in(m), out(m);
for (unsigned i = 0; i < n; ++i) {
in.push_back(m.mk_fresh_const("a",m.mk_bool_sort()));
}
ast_ext2 ext(m);
psort_nw<ast_ext2> sn(ext);
expr_ref result(m);
result = sn.le(false, 1, in.size(), in.c_ptr());
std::cout << result << "\n";
std::cout << ext.m_clauses << "\n";
}
void tst_sorting_network() {
test_at_most_1(1);
test_at_most_1(2);
test_at_most_1(3);
test_at_most_1(4);
test_at_most_1(5);
test_at_most_1(10);
return;
test_sorting_eq(11,7);
for (unsigned n = 3; n < 20; n += 2) {
for (unsigned k = 1; k < n; ++k) {