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<div class="title">simulate_theorem_producer.cpp</div> </div>
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<a href="simulate__theorem__producer_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*****************************************************************************/</span><span class="comment"></span>
<a name="l00002"></a>00002 <span class="comment">/*!</span>
<a name="l00003"></a>00003 <span class="comment"> *\file simulate_theorem_producer.cpp</span>
<a name="l00004"></a>00004 <span class="comment"> *\brief Trusted implementation of the proof rules for symbolic simulator</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Author: Sergey Berezin</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * Created: Tue Oct 7 10:55:24 2003</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * <hr></span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span>
<a name="l00013"></a>00013 <span class="comment"> * and its documentation for any purpose is hereby granted without</span>
<a name="l00014"></a>00014 <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span>
<a name="l00015"></a>00015 <span class="comment"> * LICENSE file provided with this distribution.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * <hr></span>
<a name="l00018"></a>00018 <span class="comment"> * </span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 <span class="comment">/*****************************************************************************/</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="comment">// This code is trusted</span>
<a name="l00023"></a><a class="code" href="simulate__theorem__producer_8cpp.html#a8663c36bbf15bb5a0dcb01b97897fa95">00023</a> <span class="preprocessor">#define _CVC3_TRUSTED_</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <algorithm></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="simulate__theorem__producer_8h.html" title="Implementation of the symbolic simulator proof rules.">simulate_theorem_producer.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="theory__simulate_8h.html" title="Implementation of a symbolic simulator.">theory_simulate.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="theory__core_8h.html">theory_core.h</a>"</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">using namespace </span>std;
<a name="l00032"></a>00032 <span class="keyword">using namespace </span>CVC3;
<a name="l00033"></a>00033 <span class="comment"></span>
<a name="l00034"></a>00034 <span class="comment">////////////////////////////////////////////////////////////////////</span>
<a name="l00035"></a>00035 <span class="comment"></span><span class="comment">// TheoryArith: trusted method for creating ArithTheoremProducer</span><span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment">////////////////////////////////////////////////////////////////////</span>
<a name="l00037"></a>00037 <span class="comment"></span>
<a name="l00038"></a><a class="code" href="classCVC3_1_1TheorySimulate.html#a9d7b41e634335a8c3ed2636b88fd714e">00038</a> <a class="code" href="classCVC3_1_1SimulateProofRules.html">SimulateProofRules</a>* TheorySimulate::createProofRules() {
<a name="l00039"></a>00039 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classCVC3_1_1SimulateTheoremProducer.html">SimulateTheoremProducer</a>(theoryCore()->getTM());
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041 <span class="comment"></span>
<a name="l00042"></a>00042 <span class="comment">////////////////////////////////////////////////////////////////////</span>
<a name="l00043"></a>00043 <span class="comment"></span><span class="comment">// Proof rules</span><span class="comment"></span>
<a name="l00044"></a>00044 <span class="comment">////////////////////////////////////////////////////////////////////</span>
<a name="l00045"></a>00045 <span class="comment"></span>
<a name="l00046"></a><a class="code" href="classCVC3_1_1SimulateTheoremProducer.html#a28a1bf086d29e54771cede5cea97ca9a">00046</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> SimulateTheoremProducer::expandSimulate(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e) {
<a name="l00047"></a>00047 <span class="keyword">const</span> <span class="keywordtype">int</span> arity = e.<a class="code" href="group__ExprPkg.html#ga28b901d05e52a5c646f83a95cc74f94b">arity</a>();
<a name="l00048"></a>00048 <span class="keywordflow">if</span> (<a class="code" href="theorem__producer_8h.html#a74a97b789e1a9e6c016291960c657445">CHECK_PROOFS</a>) {
<a name="l00049"></a>00049 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(e.<a class="code" href="group__ExprPkg.html#ga7814e4f55f65c7ca860c637413df5f4d">getKind</a>() == <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5baa1022ff97dac8e2d5d80d53c4cecd132">SIMULATE</a>,
<a name="l00050"></a>00050 <span class="stringliteral">"SimulateTheoremProducer::expandSimulate: "</span>
<a name="l00051"></a>00051 <span class="stringliteral">"expected SIMULATE expression: "</span>
<a name="l00052"></a>00052 +e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());
<a name="l00053"></a>00053 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(arity >= 3 && e[arity - 1].<a class="code" href="namespaceCVC3.html#ac0334a083d6782caa17ca0d337fddddf">isRational</a>() &&
<a name="l00054"></a>00054 e[arity - 1].getRational().isInteger(),
<a name="l00055"></a>00055 <span class="stringliteral">"SimulateTheoremProducer::expandSimulate: "</span>
<a name="l00056"></a>00056 <span class="stringliteral">"incorrect children in SIMULATE: "</span> + e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>());
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keywordtype">int</span> n = e[arity - 1].<a class="code" href="group__ExprPkg.html#gab0eee70e4a7f97c09954dc61b71b65e5" title="Get the Rational value out of RATIONAL_EXPR.">getRational</a>().<a class="code" href="classCVC3_1_1Rational.html#a094636dfa3a740640ca1b0c7406f7e8f">getInt</a>();
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keywordflow">if</span>(<a class="code" href="theorem__producer_8h.html#a74a97b789e1a9e6c016291960c657445">CHECK_PROOFS</a>) {
<a name="l00062"></a>00062 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(n >= 0, <span class="stringliteral">"SimulateTheoremProducer::expandSimulate: "</span>
<a name="l00063"></a>00063 <span class="stringliteral">"Requested negative number of iterations: "</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(n));
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">// Compute f(f(...f(f(s0, I1(0), I2(0), ...), I1(1), ...), ... ),</span>
<a name="l00067"></a>00067 <span class="comment">// I1(n-1), ...)</span>
<a name="l00068"></a>00068 <span class="comment">//</span>
<a name="l00069"></a>00069 <span class="comment">// We do this by accumulating the expression in 'res':</span>
<a name="l00070"></a>00070 <span class="comment">// res_{i+1} = func(res_i, I1(i), ..., Ik(i))</span>
<a name="l00071"></a>00071 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> res(e[1]);
<a name="l00072"></a>00072 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i<n; ++i) {
<a name="l00073"></a>00073 vector<Expr> args;
<a name="l00074"></a>00074 args.push_back(res);
<a name="l00075"></a>00075 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> ri(d_em->newRatExpr(i));
<a name="l00076"></a>00076 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j=2; j<arity-1; ++j)
<a name="l00077"></a>00077 args.push_back(<a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(e[j].mkOp(), ri));
<a name="l00078"></a>00078 res = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(e[0].mkOp(), args);
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00082"></a>00082 <span class="keywordflow">if</span>(withProof())
<a name="l00083"></a>00083 pf = newPf(<span class="stringliteral">"expand_simulate"</span>, e);
<a name="l00084"></a>00084 <span class="keywordflow">return</span> newRWTheorem(e, res, Assumptions::emptyAssump(), pf);
<a name="l00085"></a>00085 }
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