mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 17:15:31 +00:00
Code Activity

add normalizer of monomial coefficients

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-08-10 10:50:03 -07:00
parent c2b26300fb
commit d94f1b3fd6
3 changed files with 202 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

42
src/test/arith_rewriter.cpp
View file

@ -2,6 +2,33 @@
#include "bv_decl_plugin.h"
#include "ast_pp.h"
#include "reg_decl_plugins.h"
#include "th_rewriter.h"
#include "model.h"
#include "pdr_util.h"
#include "smt2parser.h"
static expr_ref parse_fml(ast_manager& m, char const* str) {
expr_ref result(m);
cmd_context ctx(false, &m);
ctx.set_ignore_check(true);
std::ostringstream buffer;
buffer << "(declare-const x Real)\n"
<< "(declare-const y Real)\n"
<< "(declare-const z Real)\n"
<< "(declare-const a Real)\n"
<< "(declare-const b Real)\n"
<< "(assert " << str << ")\n";
std::istringstream is(buffer.str());
VERIFY(parse_smt2_commands(ctx, is));
SASSERT(ctx.begin_assertions() != ctx.end_assertions());
result = *ctx.begin_assertions();
return result;
}
static char const* example1 = "(<= (+ (* 1.3 x y) (* 2.3 y y) (* (- 1.1 x x))) 2.2)";
static char const* example2 = "(= (+ 4 3 (- (* 3 x x) (* 5 y)) y) 0)";
void tst_arith_rewriter() {
ast_manager m;
@ -14,4 +41,19 @@ void tst_arith_rewriter() {
expr* args[2] = { t1, t2 };
ar.mk_mul(2, args, result);
std::cout << mk_pp(result, m) << "\n";
th_rewriter rw(m);
expr_ref fml = parse_fml(m, example1);
rw(fml);
std::cout << mk_pp(fml, m) << "\n";
pdr::normalize_arithmetic(fml);
std::cout << mk_pp(fml, m) << "\n";
fml = parse_fml(m, example2);
rw(fml);
std::cout << mk_pp(fml, m) << "\n";
pdr::normalize_arithmetic(fml);
std::cout << mk_pp(fml, m) << "\n";
}