Example #1
0
SOLVER_CONTEXT mk_solver_store(){
  Z3_config  cfg;
  Z3_context ctx;
  cfg = Z3_mk_config();
  ctx = mk_context_custom(cfg, error_handler);
  Z3_del_config(cfg);
  return (SOLVER_CONTEXT) ctx;
}
Example #2
0
/**
   \brief Create a logical context.
   Enable model construction only.
*/
Z3_context mk_context() 
{
    Z3_config  cfg;
    Z3_context ctx;
    cfg = Z3_mk_config();
    Z3_set_param_value(cfg, "MODEL", "true");
    ctx = Z3_mk_context(cfg);
    Z3_del_config(cfg);
    return ctx;
}
static void tst_get_implied_equalities1() {
    Z3_config cfg = Z3_mk_config();
    Z3_context ctx = Z3_mk_context(cfg);
    Z3_del_config(cfg);
    Z3_sort int_ty = Z3_mk_int_sort(ctx);
    Z3_ast a = mk_int_var(ctx,"a");
    Z3_ast b = mk_int_var(ctx,"b");
    Z3_ast c = mk_int_var(ctx,"c");
    Z3_ast d = mk_int_var(ctx,"d");
    Z3_func_decl f = Z3_mk_func_decl(ctx, Z3_mk_string_symbol(ctx,"f"), 1, &int_ty, int_ty);
    Z3_ast fa = Z3_mk_app(ctx, f, 1, &a);
    Z3_ast fb = Z3_mk_app(ctx, f, 1, &b);
    Z3_ast fc = Z3_mk_app(ctx, f, 1, &c);
    unsigned const num_terms = 7;
    unsigned i;
    Z3_ast terms[7] = { a, b, c, d, fa, fb, fc };
    unsigned class_ids[7] = { 0, 0, 0, 0, 0, 0, 0 };
    Z3_solver solver = Z3_mk_simple_solver(ctx);
    Z3_solver_inc_ref(ctx, solver);
        
    Z3_solver_assert(ctx, solver, Z3_mk_eq(ctx, a, b));
    Z3_solver_assert(ctx, solver, Z3_mk_eq(ctx, b, d));
    Z3_solver_assert(ctx, solver, Z3_mk_le(ctx, fa, fc));
    Z3_solver_assert(ctx, solver, Z3_mk_le(ctx, fc, d));
    
    Z3_get_implied_equalities(ctx, solver, num_terms, terms, class_ids);
    for (i = 0; i < num_terms; ++i) {
        printf("Class %s |-> %d\n", Z3_ast_to_string(ctx, terms[i]), class_ids[i]);
    }
    SASSERT(class_ids[1] == class_ids[0]);
    SASSERT(class_ids[2] != class_ids[0]);
    SASSERT(class_ids[3] == class_ids[0]);
    SASSERT(class_ids[4] != class_ids[0]);
    SASSERT(class_ids[5] != class_ids[0]);
    SASSERT(class_ids[6] != class_ids[0]);
    SASSERT(class_ids[4] == class_ids[5]);

    printf("asserting b <= f(a)\n");
    Z3_solver_assert(ctx, solver, Z3_mk_le(ctx, b, fa));
    Z3_get_implied_equalities(ctx, solver, num_terms, terms, class_ids);
    for (i = 0; i < num_terms; ++i) {
        printf("Class %s |-> %d\n", Z3_ast_to_string(ctx, terms[i]), class_ids[i]);
    }
    SASSERT(class_ids[1] == class_ids[0]);
    SASSERT(class_ids[2] != class_ids[0]);
    SASSERT(class_ids[3] == class_ids[0]);
    SASSERT(class_ids[4] == class_ids[0]);
    SASSERT(class_ids[5] == class_ids[0]);
    SASSERT(class_ids[6] == class_ids[0]);

    
    Z3_solver_dec_ref(ctx, solver);
    /* delete logical context */
    Z3_del_context(ctx);    
}
Example #4
0
JNIEXPORT jboolean JNICALL Java_org_joogie_prover_old_Z3ProverEx_createContext(
    JNIEnv * env, jclass clazz) {

    // create config and context
    Z3_config cfg = Z3_mk_config();
    //Z3_set_param_value(cfg, "SOFT_TIMEOUT", "30000");
    context = Z3_mk_context(cfg);
    Z3_del_config(cfg);

    // set error handler
    Z3_set_error_handler(context, myErrorHandler);

    return JNI_TRUE;
}
void z3_wrapper_init(z3_wrapper *z3) {
  /* init ctx */
  Z3_config cfg = Z3_mk_config();
  Z3_set_param_value(cfg, "model", "true");
  z3->ctx = Z3_mk_context(cfg);

  /* init error handling */
  Z3_set_error_handler(z3->ctx, z3_error_handler);

  /* init solver */
  z3->solver = Z3_mk_solver(z3->ctx);
  Z3_solver_inc_ref(z3->ctx, z3->solver);

  Z3_del_config(cfg);

  z3->Ek_consts = NULL;
}
static void tst_get_implied_equalities2() {
    enable_trace("after_search");
    enable_trace("get_implied_equalities");
    enable_trace("implied_equalities");
    Z3_config cfg = Z3_mk_config();
    Z3_context ctx = Z3_mk_context(cfg);
    Z3_del_config(cfg);
    Z3_solver solver = Z3_mk_simple_solver(ctx);
    Z3_solver_inc_ref(ctx, solver);
    Z3_sort int_ty = Z3_mk_int_sort(ctx);
    Z3_ast a = mk_int_var(ctx,"a");
    Z3_ast b = mk_int_var(ctx,"b");
    Z3_ast one = Z3_mk_numeral(ctx, "1", int_ty);
    Z3_ast two = Z3_mk_numeral(ctx, "2", int_ty);
    Z3_ast x = Z3_mk_const_array(ctx, int_ty, one);
    Z3_ast y = Z3_mk_store(ctx, x, one, a);
    Z3_ast z = Z3_mk_store(ctx, y, two , b);
    Z3_ast u = Z3_mk_store(ctx, x, two , b);
    Z3_ast v = Z3_mk_store(ctx, u, one , a);
    unsigned const num_terms = 5;
    unsigned i;
    Z3_ast terms[5] = { x, y, z, u, v};
    unsigned class_ids[5] = { 0, 0, 0, 0, 0};
    
    Z3_get_implied_equalities(ctx, solver, num_terms, terms, class_ids);
    for (i = 0; i < num_terms; ++i) {
        printf("Class %s |-> %d\n", Z3_ast_to_string(ctx, terms[i]), class_ids[i]);
    }

    SASSERT(class_ids[1] != class_ids[0]);
    SASSERT(class_ids[2] != class_ids[0]);
    SASSERT(class_ids[3] != class_ids[0]);
    SASSERT(class_ids[4] != class_ids[0]);
    SASSERT(class_ids[4] == class_ids[2]);
    SASSERT(class_ids[2] != class_ids[1]);
    SASSERT(class_ids[3] != class_ids[1]);
    SASSERT(class_ids[4] != class_ids[1]);  
    SASSERT(class_ids[3] != class_ids[2]);

    /* delete logical context */
    Z3_solver_dec_ref(ctx, solver);
    Z3_del_context(ctx);    
}
Example #7
0
File: api.cpp Project: CHolmes3/z3
void test_bvneg() {
    Z3_config cfg = Z3_mk_config();
    Z3_set_param_value(cfg,"MODEL","true");
    Z3_context ctx = Z3_mk_context(cfg);

    {
        Z3_sort bv30 = Z3_mk_bv_sort(ctx, 30);
        Z3_ast  x30 = Z3_mk_fresh_const(ctx, "x", bv30);
        Z3_ast fml = Z3_mk_eq(ctx, Z3_mk_int(ctx, -1, bv30), 
                              Z3_mk_bvadd(ctx, Z3_mk_int(ctx, 0, bv30), 
                                      x30));        
        Z3_assert_cnstr(ctx, fml);
        Z3_lbool r = Z3_check(ctx);
        std::cout << r << "\n";
    }

    {
        Z3_sort bv31 = Z3_mk_bv_sort(ctx, 31);
        Z3_ast  x31 = Z3_mk_fresh_const(ctx, "x", bv31);
        Z3_ast fml = Z3_mk_eq(ctx, Z3_mk_int(ctx, -1, bv31), 
                              Z3_mk_bvadd(ctx, Z3_mk_int(ctx, 0, bv31), 
                                      x31));        
        Z3_assert_cnstr(ctx, fml);
        Z3_lbool r = Z3_check(ctx);
        std::cout << r << "\n";
    }

    {
        Z3_sort bv32 = Z3_mk_bv_sort(ctx, 32);
        Z3_ast  x32 = Z3_mk_fresh_const(ctx, "x", bv32);
        Z3_ast fml = Z3_mk_eq(ctx, 
                              Z3_mk_int(ctx,-1, bv32), 
                              Z3_mk_bvadd(ctx, Z3_mk_int(ctx, 0, bv32), 
                                          x32));        
        Z3_assert_cnstr(ctx, fml);
        Z3_lbool r = Z3_check(ctx);
        std::cout << r << "\n";
    }

    Z3_del_config(cfg);
    Z3_del_context(ctx);    
}
Example #8
0
File: api.cpp Project: CHolmes3/z3
void test_apps() {
    Z3_config cfg = Z3_mk_config();
    Z3_set_param_value(cfg,"MODEL","true");
    Z3_context ctx = Z3_mk_context(cfg);
    Z3_symbol A = Z3_mk_string_symbol(ctx, "A");
    Z3_symbol F = Z3_mk_string_symbol(ctx, "f");
    Z3_sort SA = Z3_mk_uninterpreted_sort(ctx, A);
    Z3_func_decl f = Z3_mk_func_decl(ctx, F, 1, &SA, SA);
    Z3_symbol X = Z3_mk_string_symbol(ctx, "x");
    Z3_ast x = Z3_mk_const(ctx, X, SA);
    Z3_ast fx = Z3_mk_app(ctx, f, 1, &x);
    Z3_ast ffx = Z3_mk_app(ctx, f, 1, &fx);
    Z3_ast fffx = Z3_mk_app(ctx, f, 1, &ffx);
    Z3_ast ffffx = Z3_mk_app(ctx, f, 1, &fffx);
    Z3_ast fffffx = Z3_mk_app(ctx, f, 1, &ffffx);

    Z3_ast fml = Z3_mk_not(ctx, Z3_mk_eq(ctx, x, fffffx));
    
    Z3_assert_cnstr(ctx, fml);
    Z3_lbool r = Z3_check(ctx);
    std::cout << r << "\n";
    Z3_del_config(cfg);
    Z3_del_context(ctx);
}
    void test_smt_relation_api() {

        enable_trace("smt_relation");
        enable_trace("smt_relation2");
        enable_trace("quant_elim");
        Z3_config cfg = Z3_mk_config();
        Z3_set_param_value(cfg, "DL_DEFAULT_RELATION", "smt_relation2");
        Z3_context ctx = Z3_mk_context(cfg);
        Z3_fixedpoint dl = Z3_mk_fixedpoint(ctx);
        Z3_fixedpoint_inc_ref(ctx,dl);
        Z3_del_config(cfg);

        Z3_sort int_sort = Z3_mk_int_sort(ctx);
        Z3_sort bool_sort = Z3_mk_bool_sort(ctx);
        Z3_func_decl nil_decl, is_nil_decl;
        Z3_func_decl cons_decl, is_cons_decl, head_decl, tail_decl;

        Z3_sort list = Z3_mk_list_sort(
            ctx, 
            Z3_mk_string_symbol(ctx, "list"),
            int_sort, 
            &nil_decl,
            &is_nil_decl,
            &cons_decl,
            &is_cons_decl,
            &head_decl,
            &tail_decl);

        Z3_sort listint[2] = { list, int_sort };
        Z3_symbol p_sym = Z3_mk_string_symbol(ctx, "p");
        Z3_symbol q_sym = Z3_mk_string_symbol(ctx, "q");


        Z3_func_decl p = Z3_mk_func_decl(ctx, p_sym, 2, listint, bool_sort);
        Z3_func_decl q = Z3_mk_func_decl(ctx, q_sym, 2, listint, bool_sort);
        Z3_fixedpoint_register_relation(ctx, dl, p);
        Z3_fixedpoint_register_relation(ctx, dl, q);


        Z3_ast zero = Z3_mk_numeral(ctx, "0", int_sort);
        Z3_ast one  = Z3_mk_numeral(ctx, "1", int_sort);
        Z3_ast two  = Z3_mk_numeral(ctx, "2", int_sort);
        Z3_ast x = Z3_mk_bound(ctx, 0, list);
        Z3_ast y = Z3_mk_bound(ctx, 1, int_sort);
        Z3_ast z = Z3_mk_bound(ctx, 2, list);
        Z3_ast zero_x[2] = { zero, x };
        Z3_ast fx = Z3_mk_app(ctx, cons_decl, 2, zero_x);
        Z3_ast zero_fx[2] = { zero, fx };
        Z3_ast ffx = Z3_mk_app(ctx, cons_decl, 2, zero_fx);
        Z3_ast xy[2] = { x, y };
        Z3_ast zy[2] = { z, y };
        // Z3_ast ffxy[2] = { ffx, y };
        // Z3_ast fxy[2] = { fx, y };
        Z3_ast zero_nil[2] = { zero, Z3_mk_app(ctx, nil_decl, 0, 0) };
        Z3_ast f0 = Z3_mk_app(ctx, cons_decl, 2, zero_nil);
        Z3_ast zero_f0[2] = { zero, f0 };
        Z3_ast f1 = Z3_mk_app(ctx, cons_decl, 2, zero_f0);
        Z3_ast zero_f1[2] = { zero, f1 };
        Z3_ast f2 = Z3_mk_app(ctx, cons_decl, 2, zero_f1);
        Z3_ast zero_f2[2] = { zero, f2 };
        Z3_ast f3 = Z3_mk_app(ctx, cons_decl, 2, zero_f2);
        Z3_ast zero_f3[2] = { zero, f3 };
        Z3_ast f4 = Z3_mk_app(ctx, cons_decl, 2, zero_f3);
        Z3_ast zero_f4[2] = { zero, f4 };
        Z3_ast f5 = Z3_mk_app(ctx, cons_decl, 2, zero_f4);
        Z3_ast zero_z[2] = { zero, z };
        Z3_ast fz = Z3_mk_app(ctx, cons_decl, 2, zero_z);
        
        Z3_ast pxy = Z3_mk_app(ctx, p, 2, xy);
        Z3_ast pzy    = Z3_mk_app(ctx, p, 2, zy);
        Z3_ast qxy = Z3_mk_app(ctx, q, 2, xy);
        Z3_ast qzy = Z3_mk_app(ctx, q, 2, zy);
        Z3_ast even_y = Z3_mk_eq(ctx, zero, Z3_mk_mod(ctx, y, two)); 
        Z3_ast odd_y  = Z3_mk_eq(ctx, one, Z3_mk_mod(ctx, y, two));
        

        // p(x, y) :- odd(y), p(z,y), f(z) = x . // dead rule.
        // q(x, y) :- p(f(f(x)), y).
        // p(x, y) :- q(f(x), y)                 // x decreases
        // p(x, y) :- even y, x = f^5(0)         // initial condition.

        Z3_ast body1[3] = { pzy, Z3_mk_eq(ctx, fz, x), odd_y };
        Z3_ast body2[2] = { pzy, Z3_mk_eq(ctx, ffx, z) };
        Z3_ast body3[2] = { qzy, Z3_mk_eq(ctx, fx, z) };
        Z3_ast body4[2] = { even_y, Z3_mk_eq(ctx, x, f5) };
        Z3_fixedpoint_add_rule(ctx, dl, Z3_mk_implies(ctx, Z3_mk_and(ctx, 3, body1), pxy), 0);
        Z3_fixedpoint_add_rule(ctx, dl, Z3_mk_implies(ctx, Z3_mk_and(ctx, 2, body2), qxy), 0);
        Z3_fixedpoint_add_rule(ctx, dl, Z3_mk_implies(ctx, Z3_mk_and(ctx, 2, body3), pxy), 0);
        Z3_fixedpoint_add_rule(ctx, dl, Z3_mk_implies(ctx, Z3_mk_and(ctx, 2, body4), pxy), 0);

        Z3_lbool r = Z3_fixedpoint_query(ctx, dl, pxy);
        if (r != Z3_L_UNDEF) {
            std::cout << Z3_ast_to_string(ctx, Z3_fixedpoint_get_answer(ctx, dl)) << "\n";
        }

        Z3_del_context(ctx);

    }