Entry.java

package project;

import java.util.*;
import org.overture.codegen.runtime.*;
import org.overture.codegen.vdm2jml.runtime.*;

@SuppressWarnings("all")
//@ nullable_by_default

final public class Entry {
  /*@ public ghost static boolean invChecksOn = true; @*/

  private Entry() {}

  public static Object Run() {

    IO.println("Before legal use");
    {
      Object a = true;
      //@ assert (Utils.is_bool(a) || Utils.is_char(a) || Utils.is_nat1(a));

      a = 1L;
      //@ assert (Utils.is_bool(a) || Utils.is_char(a) || Utils.is_nat1(a));

      a = 'a';
      //@ assert (Utils.is_bool(a) || Utils.is_char(a) || Utils.is_nat1(a));

      a = true;
      //@ assert (Utils.is_bool(a) || Utils.is_char(a) || Utils.is_nat1(a));

    }

    {
      Object b = true;
      //@ assert (((b == null) || Utils.is_char(b) || Utils.is_nat1(b)) || Utils.is_bool(b));

      b = null;
      //@ assert (((b == null) || Utils.is_char(b) || Utils.is_nat1(b)) || Utils.is_bool(b));

    }

    IO.println("After legal use");
    IO.println("Before illegal use");
    {
      Object a = charNil();
      //@ assert (Utils.is_bool(a) || Utils.is_char(a) || Utils.is_nat1(a));

      /* skip */
    }

    IO.println("After illegal use");
    return 0L;
  }
  /*@ pure @*/

  public static Character charNil() {

    Character ret_1 = null;
    //@ assert ((ret_1 == null) || Utils.is_char(ret_1));

    return ret_1;
  }

  public String toString() {

    return "Entry{}";
  }
}