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Polysat: add two more prototype rules (#5355)

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* Add try_div to PDDs

* x>y is false when x==y

* First version of the other two prototype rules

* More band-aid fixes...
This commit is contained in:
Jakob Rath 2021-06-18 17:48:50 +02:00 • committed by GitHub
parent 3e1cfcd538
commit c4963f4381
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7 changed files with 239 additions and 17 deletions
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13
src/test/pdd.cpp
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@ -448,6 +448,18 @@ public :
SASSERT((p + b*b*b).max_pow2_divisor() == 0);
}
static void try_div() {
std::cout << "try_div\n";
pdd_manager m(4, pdd_manager::mod2N_e, 256);
pdd const a = m.mk_var(0);
pdd const b = m.mk_var(1);
pdd const p = 5*a + 15*a*b;
SASSERT_EQ(p.div(rational(5)), a + 3*a*b);
pdd res = a;
SASSERT(!p.try_div(rational(3), res));
}
static void binary_resolve() {
std::cout << "binary resolve\n";
pdd_manager m(4, pdd_manager::mod2N_e, 4);
@ -575,6 +587,7 @@ void tst_pdd() {
dd::test::degree_of_variables();
dd::test::factor();
dd::test::max_pow2_divisor();
dd::test::try_div();
dd::test::binary_resolve();
dd::test::pow();
dd::test::subst_val();