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Add test

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This commit is contained in:
Jakob Rath 2022-12-22 16:37:32 +01:00
parent e57bcdfeab
commit 9207bb5d1e
1 changed files with 24 additions and 0 deletions
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24
src/test/polysat.cpp
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@ -1751,6 +1751,29 @@ namespace polysat {
s.expect_sat({{a, 5}});
}
/**
* Motivated by weak forbidden intervals lemma in bench23:
* v66 > v41 && v67 == v66 ==> v67 != 0
*
* Cause by omitting v41 from the symbolic bounds of v66 > v41.
*
* The stronger lemma should be:
* v66 > v41 && v67 == v66 ==> v41 + 1 <= v67
*
* The conclusion could also be v67 > v41 (note that -1 > v41 follows from premise v66 > v41, so both conclusions are equivalent in this lemma).
*/
static void test_bench23_fi_lemma() {
scoped_solver s(__func__);
auto x = s.var(s.add_var(256)); // v41
auto y = s.var(s.add_var(256)); // v66
auto z = s.var(s.add_var(256)); // v67
s.add_ult(x, y); // v66 > v41
s.add_eq(y, z); // v66 == v67
s.add_eq(z, 0); // v67 == 0
s.check();
s.expect_unsat();
}
static void test_bench6_viable() {
scoped_solver s(__func__);
rational coeff("12737129816104781496592808350955669863859698313220462044340334240870444260393");
@ -1994,6 +2017,7 @@ void tst_polysat() {
RUN(test_polysat::test_clause_simplify1());
RUN(test_polysat::test_clause_simplify2());
RUN(test_polysat::test_clause_simplify3());
RUN(test_polysat::test_bench23_fi_lemma());
RUN(test_polysat::test_add_conflicts());
RUN(test_polysat::test_wlist());