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Arith min max (#6864)

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* prepare for dependencies

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* snapshot

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* pass in u_dependency_manager

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* address NYIs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring names

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* eq_explanation update

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add outline of bounds improvement functionality

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix unit tests

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove unused structs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* convert more internals to use u_dependency instead of constraint_index

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* convert more internals to use u_dependency instead of constraint_index

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remember to push/pop scopes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use the main function for updating bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove reset of shared dep manager

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable improve-bounds, add statistics

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-08-19 17:44:09 -07:00 • committed by GitHub
parent c3b344ec47
commit 5e3df9ee77
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40 changed files with 630 additions and 529 deletions
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12
src/math/lp/nla_common.cpp
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@ -60,11 +60,9 @@ unsigned common::random() {
}
void common::add_deps_of_fixed(lpvar j, u_dependency*& dep) {
unsigned lc, uc;
auto& dep_manager = c().m_intervals.get_dep_intervals().dep_manager();
c().m_lar_solver.get_bound_constraint_witnesses_for_column(j, lc, uc);
dep = dep_manager.mk_join(dep, dep_manager.mk_leaf(lc));
dep = dep_manager.mk_join(dep, dep_manager.mk_leaf(uc));
auto& dm = c().lra.dep_manager();
auto* deps = c().lra.get_bound_constraint_witnesses_for_column(j);
dep = dm.mk_join(dep, deps);
}
@ -73,7 +71,7 @@ nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn, u_depende
SASSERT(!coeff.is_zero());
if (c().params().arith_nl_horner_subs_fixed() == 1 && c().var_is_fixed(j)) {
add_deps_of_fixed(j, dep);
return cn.mk_scalar(coeff * c().m_lar_solver.column_lower_bound(j).x);
return cn.mk_scalar(coeff * c().lra.column_lower_bound(j).x);
}
if (c().params().arith_nl_horner_subs_fixed() == 2 && c().var_is_fixed_to_zero(j)) {
add_deps_of_fixed(j, dep);
@ -91,7 +89,7 @@ nex * common::nexvar(const rational & coeff, lpvar j, nex_creator& cn, u_depende
for (lpvar k : m.vars()) {
if (c().params().arith_nl_horner_subs_fixed() == 1 && c().var_is_fixed(k)) {
add_deps_of_fixed(k, dep);
mf *= c().m_lar_solver.column_lower_bound(k).x;
mf *= c().lra.column_lower_bound(k).x;
} else if (c().params().arith_nl_horner_subs_fixed() == 2 &&
c().var_is_fixed_to_zero(k)) {
dep = initial_dep;