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-#! /usr/bin/ruby
-##! \file SimpleVC.rb
-### \verbatim
-### Original author: mdeters
-### Major contributors: none
-### Minor contributors (to current version): none
-### This file is part of the CVC4 prototype.
-### Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
-### Courant Institute of Mathematical Sciences
-### New York University
-### See the file COPYING in the top-level source directory for licensing
-### information.\endverbatim
-###
-### \brief A simple demonstration of the Ruby interface
-###
-### A simple demonstration of the Ruby interface. Compare to the
-### C++ interface in simple_vc_cxx.cpp; they are quite similar.
-###
-### To run, use something like:
-###
-### ln -s ../builds/src/bindings/ruby/.libs/CVC4.so CVC4.so
-### ./SimpleVC.rb
-####
-
-require 'CVC4'
-include CVC4 # CVC4::Integer still has to be qualified
-
-em = ExprManager.new
-smt = SmtEngine.new(em)
-
-# Prove that for integers x and y:
-# x > 0 AND y > 0 => 2x + y >= 3
-
-integer = em.integerType
-
-x = em.mkVar("x", integer)
-y = em.mkVar("y", integer)
-zero = em.mkConst(CVC4::Integer.new(0))
-
-x_positive = em.mkExpr(GT, x, zero)
-y_positive = em.mkExpr(GT, y, zero)
-
-two = em.mkConst(CVC4::Integer.new(2))
-twox = em.mkExpr(MULT, two, x)
-twox_plus_y = em.mkExpr(PLUS, twox, y)
-
-three = em.mkConst(CVC4::Integer.new(3))
-twox_plus_y_geq_3 = em.mkExpr(GEQ, twox_plus_y, three)
-
-formula = Expr.new(em.mkExpr(AND, x_positive, y_positive)).impExpr(Expr.new(twox_plus_y_geq_3))
-
-puts "Checking entailment of formula " + formula.toString + " with CVC4."
-puts "CVC4 should report ENTAILED."
-puts "Result from CVC4 is: " + smt.checkEntailed(formula).toString
-
-exit
-
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