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z3 / src / test / smt2print_parse.cpp

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// This is to test the print-parse facilities over the API
// for SMT-LIB2.

#include "z3.h"
#include <iostream>

void test_print(Z3_context ctx, Z3_ast a) {
    Z3_set_ast_print_mode(ctx, Z3_PRINT_SMTLIB2_COMPLIANT);
    char const* spec1 = Z3_benchmark_to_smtlib_string(ctx, "test", 0, 0, 0, 0, 0, a);
    std::cout << spec1 << "\n";

    Z3_ast b = 
        Z3_parse_smtlib2_string(ctx, 
                                spec1,
                                0,
                                0,
                                0,
                                0,
                                0,
                                0);

    char const* spec2 = Z3_ast_to_string(ctx, b);
    std::cout << spec2 << "\n";    
}

void test_parseprint(char const* spec) {
    Z3_context ctx = Z3_mk_context(0);
    std::cout << spec << "\n";

    Z3_ast a = 
        Z3_parse_smtlib2_string(ctx, 
                                spec,
                                0,
                                0,
                                0,
                                0,
                                0,
                                0);
    
    test_print(ctx, a);

    Z3_del_context(ctx);
}

void tst_smt2print_parse() {

    // test basic datatypes  
    char const* spec1 = 
        "(declare-datatypes (T) ((list (nil) (cons (car T) (cdr list)))))\n"
        "(declare-const x Int)\n"
        "(declare-const l (list Int))\n"
        "(declare-fun f ((list Int)) Bool)\n"
        "(assert (f (cons x l)))\n";

    test_parseprint(spec1);

    // test basic arrays
    char const* spec2 = 
        "(declare-const x Int)\n"
        "(declare-const a (Array Int Int))\n"
        "(declare-const b (Array (Array Int Int) Bool))\n"
        "(assert (select b a))\n"
        "(assert (= b ((as const (Array (Array Int Int) Bool)) true)))\n"
        "(assert (= b (store b a true)))\n"
        "(declare-const b1 (Array Bool Bool))\n"
        "(declare-const b2 (Array Bool Bool))\n"
        "(assert (= ((as const (Array Bool Bool)) false) ((_ map and) b1 b2)))\n";

    // TBD: const, map, store

    test_parseprint(spec2);

    // Test mutually recursive datatypes
    char const* spec3 = 
        "(declare-datatypes () ((list (nil) (cons (car tree) (cdr list))) (tree (leaf) (node (n list)))))\n"
        "(declare-const x tree)\n"
        "(declare-const l list)\n"
        "(declare-fun f (list) Bool)\n"
        "(assert (f (cons x l)))\n";

    test_parseprint(spec3);

    // Test arithmetic
    char const* spec4 = 
        "(declare-const x Real)\n"
        "(declare-const y Int)\n"
        "(assert (= x 0.0))\n"
        "(assert (= y 6))\n"
        "(assert (> (/ x 1.4) (to_real y)))";

    test_parseprint(spec4);

    // Test bit-vectors
    char const* spec5 = 
        "(declare-const x (_ BitVec 4))\n"
        "(declare-const y (_ BitVec 4))\n"
        "(assert (bvule x (bvmul y (concat ((_ extract 2 0) x) ((_ extract 3 3) #xf0)))))";

    test_parseprint(spec5);

    // Test ?     

}