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testing qe_arith

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-09-12 15:27:09 -07:00
parent 1741671a9c
commit 8ab04fb05b
3 changed files with 107 additions and 16 deletions
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68
src/test/qe_arith.cpp
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@ -1,4 +1,5 @@
#include "qe_arith.h"
#include "qe.h"
#include "th_rewriter.h"
#include "smt2parser.h"
#include "arith_decl_plugin.h"
@ -7,7 +8,7 @@
#include "ast_pp.h"
#include "qe_util.h"
#include "smt_context.h"
#include "expr_abstract.h"
static expr_ref parse_fml(ast_manager& m, char const* str) {
expr_ref result(m);
@ -36,6 +37,15 @@ static char const* example3 = "(and (<= z x) (<= x 3.0) (< (* 3.0 x) y) (<= z y)
static char const* example4 = "(and (<= z x) (<= x 3.0) (not (>= (* 3.0 x) y)) (<= z y))";
static char const* example5 = "(and (<= y x) (<= z x) (<= x u) (<= x v) (<= x t))";
static char const* example6 = "(and (<= 0 (+ x z))\
(>= y x) \
(<= y x)\
(<= (- u y) 0.0)\
(>= x (+ v z))\
(>= x 0.0)\
(<= x 1.0))";
static void test(char const *ex) {
smt_params params;
params.m_model = true;
@ -58,9 +68,65 @@ static void test(char const *ex) {
std::cout << mk_pp(fml, m) << "\n";
std::cout << mk_pp(pr, m) << "\n";
}
static void test2(char const *ex) {
smt_params params;
params.m_model = true;
ast_manager m;
reg_decl_plugins(m);
arith_util a(m);
expr_ref fml = parse_fml(m, ex);
app_ref_vector vars(m);
expr_ref_vector lits(m);
vars.push_back(m.mk_const(symbol("x"), a.mk_real()));
vars.push_back(m.mk_const(symbol("y"), a.mk_real()));
vars.push_back(m.mk_const(symbol("z"), a.mk_real()));
qe::flatten_and(fml, lits);
smt::context ctx(m, params);
ctx.push();
ctx.assert_expr(fml);
lbool result = ctx.check();
SASSERT(result == l_true);
ref<model> md;
ctx.get_model(md);
ctx.pop(1);
std::cout << mk_pp(fml, m) << "\n";
expr_ref pr2(m), fml2(m);
expr_ref_vector bound(m);
ptr_vector<sort> sorts;
svector<symbol> names;
for (unsigned i = 0; i < vars.size(); ++i) {
bound.push_back(vars[i].get());
names.push_back(vars[i]->get_decl()->get_name());
sorts.push_back(m.get_sort(vars[i].get()));
}
expr_abstract(m, 0, 3, bound.c_ptr(), fml, fml2);
fml2 = m.mk_exists(3, sorts.c_ptr(), names.c_ptr(), fml2);
qe::expr_quant_elim qe(m, params);
expr_ref pr1 = qe::arith_project(*md, vars, lits);
qe(m.mk_true(), fml2, pr2);
std::cout << mk_pp(pr1, m) << "\n";
std::cout << mk_pp(pr2, m) << "\n";
expr_ref npr2(m);
npr2 = m.mk_not(pr2);
ctx.push();
ctx.assert_expr(pr1);
ctx.assert_expr(npr2);
VERIFY(l_false == ctx.check());
ctx.pop(1);
}
void tst_qe_arith() {
test2(example6);
return;
test(example1);
test(example2);
test(example3);