<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>CVC3: cnf_theorem_producer.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.4 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">CVC3 <span id="projectnumber">2.4.1</span></div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>File Members</span></a></li>
</ul>
</div>
<div class="header">
<div class="headertitle">
<div class="title">cnf_theorem_producer.cpp</div> </div>
</div>
<div class="contents">
<a href="cnf__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 cnf_theorem_producer.cpp</span>
<a name="l00004"></a>00004 <span class="comment"> *\brief Implementation of CNF_TheoremProducer</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Author: Clark Barrett</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * Created: Thu Jan 5 05:49:24 2006</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="preprocessor">#include "<a class="code" href="cnf__manager_8h.html" title="Manager for conversion to and traversal of CNF formulas.">cnf_manager.h</a>"</span>
<a name="l00023"></a>00023
<a name="l00024"></a><a class="code" href="cnf__theorem__producer_8cpp.html#a8663c36bbf15bb5a0dcb01b97897fa95">00024</a> <span class="preprocessor">#define _CVC3_TRUSTED_</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="cnf__theorem__producer_8h.html" title="Implementation of CNF_Rules API.">cnf_theorem_producer.h</a>"</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">using namespace </span>std;
<a name="l00029"></a>00029 <span class="keyword">using namespace </span>CVC3;
<a name="l00030"></a>00030 <span class="keyword">using namespace </span>SAT;
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
<a name="l00034"></a>00034 <span class="comment"></span><span class="comment">// class CNF_Manager trusted methods</span><span class="comment"></span>
<a name="l00035"></a>00035 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
<a name="l00036"></a>00036 <span class="comment"></span>
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="classSAT_1_1CNF__Manager.html#a4caaeae8fffbb938e8b723c0b0cfe98e">00038</a> <a class="code" href="classCVC3_1_1CNF__Rules.html" title="API to the CNF proof rules.">CNF_Rules</a>* CNF_Manager::createProofRules(<a class="code" href="classCVC3_1_1TheoremManager.html">TheoremManager</a>* tm, <span class="keyword">const</span> <a class="code" href="classCVC3_1_1CLFlags.html">CLFlags</a>& flags) {
<a name="l00039"></a>00039 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classCVC3_1_1CNF__TheoremProducer.html">CNF_TheoremProducer</a>(tm, flags);
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="comment"></span>
<a name="l00043"></a>00043 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
<a name="l00044"></a>00044 <span class="comment"></span><span class="comment">// Proof rules</span><span class="comment"></span>
<a name="l00045"></a>00045 <span class="comment">/////////////////////////////////////////////////////////////////////////////</span>
<a name="l00046"></a>00046 <span class="comment"></span>
<a name="l00047"></a>00047
<a name="l00048"></a>00048
<a name="l00049"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#aeef9185f05f685d80f0bfc823faa429d">00049</a> <span class="keywordtype">void</span> CNF_TheoremProducer::getSmartClauses(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm, vector<Theorem>& clauses)
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 <span class="comment">// DebugAssert(!thm.getExpr().isDeductionLiteral(), "Expected unproved expr");</span>
<a name="l00052"></a>00052 vector<Theorem> assumptions;
<a name="l00053"></a>00053 thm.<a class="code" href="classCVC3_1_1Theorem.html#a621ab2150eedc0e3b38d34275ac206cd" title="Clear the flag attribute in all the theorems.">clearAllFlags</a>();
<a name="l00054"></a>00054 thm.<a class="code" href="classCVC3_1_1Theorem.html#aad446d2963572258f7b8f0c74fb9e299">GetSatAssumptions</a>(assumptions);
<a name="l00055"></a>00055 <span class="comment">// Proof pf;</span>
<a name="l00056"></a>00056 <span class="comment">// if (withProof()) {</span>
<a name="l00057"></a>00057 <span class="comment">// pf = newPf("learned_clause_smart", thm.getProof());</span>
<a name="l00058"></a>00058 <span class="comment">// }</span>
<a name="l00059"></a>00059 <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm2;
<a name="l00060"></a>00060 vector<Expr> TempVec;
<a name="l00061"></a>00061 vector<Proof> pfs;
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (!thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga6173f64b22cba76472cd0c814bbf6dae">isFalse</a>()) {
<a name="l00063"></a>00063 TempVec.push_back(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>());
<a name="l00064"></a>00064 pfs.push_back(thm.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>());
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 <span class="keywordflow">for</span> (<a class="code" href="namespaceHash.html#a34e07ea2356b048f9871d1cfdf478da6">vector<Theorem>::size_type</a> i = 0; i < assumptions.size(); i++) {
<a name="l00067"></a>00067 <span class="keywordflow">if</span> (thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>() == assumptions[i].getExpr()) {
<a name="l00068"></a>00068 <span class="comment">// skip this clause as it is trivial</span>
<a name="l00069"></a>00069 <span class="keywordflow">if</span> (!(assumptions[i].isAssump())) {
<a name="l00070"></a>00070 getSmartClauses(assumptions[i], clauses);
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 <span class="keywordflow">return</span>;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 TempVec.push_back(assumptions[i].getExpr().negate());
<a name="l00075"></a>00075 pfs.push_back(assumptions[i].getProof());
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00079"></a>00079 <span class="keywordflow">if</span> (TempVec.size() == 1){
<a name="l00080"></a>00080 <span class="keywordflow">if</span> (withProof()) {
<a name="l00081"></a>00081 pf = newPf(<span class="stringliteral">"learned_clause_smart"</span>, TempVec[0], pfs);
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 thm2 = newTheorem(TempVec[0], Assumptions::emptyAssump(), pf);
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (TempVec.size() > 1) {
<a name="l00086"></a>00086 <span class="keywordflow">if</span> (withProof()) {
<a name="l00087"></a>00087 pf = newPf(<span class="stringliteral">"learned_clause_smart"</span>, <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(<a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba96727447c0ad447987df1c6415aef074">OR</a>, TempVec), pfs);
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 thm2 = newTheorem(<a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(<a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba96727447c0ad447987df1c6415aef074">OR</a>, TempVec), Assumptions::emptyAssump(), pf);
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 <span class="keywordflow">else</span> {
<a name="l00092"></a>00092 <a class="code" href="debug_8h.html#a2637b2fffa22e3c9fad40cda8fcc3bce" title="If something goes horribly wrong, print a message and abort immediately with exit(1).">FatalAssert</a>(<span class="keyword">false</span>, <span class="stringliteral">"Should be unreachable"</span>);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094 thm2.<a class="code" href="classCVC3_1_1Theorem.html#ab3309c937f827595d1d92fa48cb5a471" title="Set the quantification level for this theorem.">setQuantLevel</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#a26b6f0af9e9b2f2a8c22a7dcb9fbb0b1" title="Return quantification level for this theorem.">getQuantLevel</a>());
<a name="l00095"></a>00095 clauses.push_back(thm2);
<a name="l00096"></a>00096 <span class="comment">// thm.getExpr().setDeductionLiteral();</span>
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keywordflow">for</span> (vector<Theorem>::iterator itr = assumptions.begin(); itr != assumptions.end(); itr++) {
<a name="l00099"></a>00099 <span class="keywordflow">if</span> (!((*itr).isAssump())) {<span class="comment">// && !(*itr).getExpr().isDeductionLiteral()) {</span>
<a name="l00100"></a>00100 getSmartClauses((*itr), clauses);
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105
<a name="l00106"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#a3fe737b830833e49627619fa08429893">00106</a> <span class="keywordtype">void</span> CNF_TheoremProducer::learnedClauses(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm,
<a name="l00107"></a>00107 vector<Theorem>& clauses,
<a name="l00108"></a>00108 <span class="keywordtype">bool</span> newLemma)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <a class="code" href="debug_8h.html#a600cb2d68efe7cc413cccbb5714c7016">IF_DEBUG</a>(<span class="keywordflow">if</span>(debugger.trace(<span class="stringliteral">"cnf proofs"</span>)) {
<a name="l00111"></a>00111 ostream& os = debugger.getOS();
<a name="l00112"></a>00112 os << <span class="stringliteral">"learnedClause {"</span> << <a class="code" href="group__ExprStream__Manip.html#ga05b0ea7353ec24fa8e7e272d7a7875d8" title="Print the end-of-line.">endl</a>;
<a name="l00113"></a>00113 os << thm;
<a name="l00114"></a>00114 })
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (!newLemma && d_smartClauses) {
<a name="l00117"></a>00117 getSmartClauses(thm, clauses);
<a name="l00118"></a>00118 <span class="keywordflow">return</span>;
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">// if (newLemma || d_flags["dynack"].getInt() <= 0) {</span>
<a name="l00122"></a>00122 <span class="comment">// if (NewClausel == true) {</span>
<a name="l00123"></a>00123 <span class="comment">// return;</span>
<a name="l00124"></a>00124 <span class="comment">// }</span>
<a name="l00125"></a>00125
<a name="l00126"></a>00126 vector<Expr> assumptions;
<a name="l00127"></a>00127 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00128"></a>00128 thm.<a class="code" href="classCVC3_1_1Theorem.html#a524b4dafa4fb8f14742baa856612d92b">getLeafAssumptions</a>(assumptions, <span class="keyword">true</span> <span class="comment">/*negate*/</span>);
<a name="l00129"></a>00129
<a name="l00130"></a>00130 vector<Expr>::iterator iend = assumptions.end();
<a name="l00131"></a>00131 <span class="keywordflow">for</span> (vector<Expr>::iterator i = assumptions.begin();
<a name="l00132"></a>00132 i != iend; ++i) {
<a name="l00133"></a>00133 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(i->isAbsLiteral(), <span class="stringliteral">"Expected only literal assumptions"</span>);
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keywordflow">if</span> (!thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga6173f64b22cba76472cd0c814bbf6dae">isFalse</a>())
<a name="l00137"></a>00137 assumptions.push_back(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>());
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(assumptions.size() > 0, <span class="stringliteral">"Expected at least one entry"</span>);
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm2;
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (assumptions.size() == 1) {
<a name="l00143"></a>00143 <span class="keywordflow">if</span>(withProof()) {
<a name="l00144"></a>00144 pf = newPf(<span class="stringliteral">"learned_clause"</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>());
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 thm2 = newTheorem(assumptions[0], Assumptions::emptyAssump(), pf);
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148 <span class="keywordflow">else</span> {
<a name="l00149"></a>00149 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> clauseExpr = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(<a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba96727447c0ad447987df1c6415aef074">OR</a>, assumptions);
<a name="l00150"></a>00150 <span class="keywordflow">if</span>(withProof()) {
<a name="l00151"></a>00151 pf = newPf(<span class="stringliteral">"learned_clause"</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>());
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 thm2 = newTheorem(clauseExpr, Assumptions::emptyAssump(), pf);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 thm2.setQuantLevel(thm.<a class="code" href="classCVC3_1_1Theorem.html#a26b6f0af9e9b2f2a8c22a7dcb9fbb0b1" title="Return quantification level for this theorem.">getQuantLevel</a>());
<a name="l00156"></a>00156 clauses.push_back(thm2);
<a name="l00157"></a>00157 <span class="comment">// }</span>
<a name="l00158"></a>00158 <span class="comment">// else {</span>
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="comment">// vector<Expr> congruences;</span>
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">// thm.getAssumptionsAndCong(assumptions, congruences, true /*negate*/);</span>
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">// vector<Expr>::iterator i = assumptions.begin(), iend = assumptions.end();</span>
<a name="l00165"></a>00165 <span class="comment">// for (; i != iend; ++i) {</span>
<a name="l00166"></a>00166 <span class="comment">// DebugAssert(i->isAbsLiteral(), "Expected only literal assumptions");</span>
<a name="l00167"></a>00167 <span class="comment">// }</span>
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">// if (!thm.getExpr().isFalse())</span>
<a name="l00170"></a>00170 <span class="comment">// assumptions.push_back(thm.getExpr());</span>
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="comment">// if(withProof()) {</span>
<a name="l00173"></a>00173 <span class="comment">// pf = newPf("learned_clause", thm.getProof());</span>
<a name="l00174"></a>00174 <span class="comment">// }</span>
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="comment">// DebugAssert(assumptions.size() > 0, "Expected at least one entry");</span>
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="comment">// Theorem thm2;</span>
<a name="l00179"></a>00179 <span class="comment">// if (assumptions.size() == 1) {</span>
<a name="l00180"></a>00180 <span class="comment">// Expr clauseExpr = assumptions[0];</span>
<a name="l00181"></a>00181 <span class="comment">// if(withProof()) {</span>
<a name="l00182"></a>00182 <span class="comment">// pf = newPf("learned_clause", clauseExpr, thm.getProof());</span>
<a name="l00183"></a>00183 <span class="comment">// }</span>
<a name="l00184"></a>00184 <span class="comment">// thm2 = newTheorem(clauseExpr, Assumptions::emptyAssump(), pf);</span>
<a name="l00185"></a>00185 <span class="comment">// }</span>
<a name="l00186"></a>00186 <span class="comment">// else {</span>
<a name="l00187"></a>00187 <span class="comment">// Expr clauseExpr = Expr(OR, assumptions);</span>
<a name="l00188"></a>00188 <span class="comment">// if(withProof()) {</span>
<a name="l00189"></a>00189 <span class="comment">// pf = newPf("learned_clause", clauseExpr, thm.getProof());</span>
<a name="l00190"></a>00190 <span class="comment">// }</span>
<a name="l00191"></a>00191 <span class="comment">// thm2 = newTheorem(clauseExpr, Assumptions::emptyAssump(), pf);</span>
<a name="l00192"></a>00192 <span class="comment">// }</span>
<a name="l00193"></a>00193 <span class="comment">// thm2.setQuantLevel(thm.getQuantLevel());</span>
<a name="l00194"></a>00194 <span class="comment">// clauses.push_back(thm2);</span>
<a name="l00195"></a>00195
<a name="l00196"></a>00196 <span class="comment">// for (i = congruences.begin(), iend = congruences.end(); i != iend; ++i) {</span>
<a name="l00197"></a>00197 <span class="comment">// if (withProof()) {</span>
<a name="l00198"></a>00198 <span class="comment">// pf = newPf("congruence", *i);</span>
<a name="l00199"></a>00199 <span class="comment">// }</span>
<a name="l00200"></a>00200 <span class="comment">// thm2 = newTheorem(*i, Assumptions::emptyAssump(), pf);</span>
<a name="l00201"></a>00201 <span class="comment">// thm2.setQuantLevel(thm.getQuantLevel());</span>
<a name="l00202"></a>00202 <span class="comment">// clauses.push_back(thm2);</span>
<a name="l00203"></a>00203 <span class="comment">// }</span>
<a name="l00204"></a>00204 <span class="comment">// }</span>
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207
<a name="l00208"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#ae32cd839e30a9a7f4d5bf96bd9f7a0ab">00208</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> CNF_TheoremProducer::ifLiftRule(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <span class="keywordtype">int</span> itePos) {
<a name="l00209"></a>00209 <span class="keywordflow">if</span>(<a class="code" href="theorem__producer_8h.html#a74a97b789e1a9e6c016291960c657445">CHECK_PROOFS</a>) {
<a name="l00210"></a>00210 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(e.<a class="code" href="group__ExprPkg.html#ga42929221eb172250697b72c28af6de07" title="Get the type. Recursively compute if necessary.">getType</a>().<a class="code" href="classCVC3_1_1Type.html#a38bba404056eadf3c283a67ab2347e02">isBool</a>(),
<a name="l00211"></a>00211 <span class="stringliteral">"CNF_TheoremProducer::ifLiftRule("</span>
<a name="l00212"></a>00212 <span class="stringliteral">"input must be a Predicate: e = "</span> + e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()+<span class="stringliteral">")"</span>);
<a name="l00213"></a>00213 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(itePos >= 0, <span class="stringliteral">"itePos negative"</span>+<a class="code" href="namespaceCVC3.html#af69618103f1f0f2eadada0796a2a940c">int2string</a>(itePos));
<a name="l00214"></a>00214 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(e.<a class="code" href="group__ExprPkg.html#ga28b901d05e52a5c646f83a95cc74f94b">arity</a>() > itePos && e[itePos].<a class="code" href="group__ExprPkg.html#gaef13fa4752a1fb28e129a1efd0e26f01">isITE</a>(),
<a name="l00215"></a>00215 <span class="stringliteral">"CNF_TheoremProducer::ifLiftRule("</span>
<a name="l00216"></a>00216 <span class="stringliteral">"input does not have an ITE: e = "</span> + e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()+<span class="stringliteral">")"</span>);
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& ite = e[itePos];
<a name="l00219"></a>00219 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& cond = ite[0];
<a name="l00220"></a>00220 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& t1 = ite[1];
<a name="l00221"></a>00221 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& t2 = ite[2];
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordflow">if</span>(<a class="code" href="theorem__producer_8h.html#a74a97b789e1a9e6c016291960c657445">CHECK_PROOFS</a>) {
<a name="l00224"></a>00224 <a class="code" href="theorem__producer_8h.html#a03dbe872f723d32fd975528f811d646e">CHECK_SOUND</a>(cond.<a class="code" href="group__ExprPkg.html#ga42929221eb172250697b72c28af6de07" title="Get the type. Recursively compute if necessary.">getType</a>().<a class="code" href="classCVC3_1_1Type.html#a38bba404056eadf3c283a67ab2347e02">isBool</a>(),
<a name="l00225"></a>00225 <span class="stringliteral">"CNF_TheoremProducer::ifLiftRule("</span>
<a name="l00226"></a>00226 <span class="stringliteral">"input does not have an ITE: e = "</span> + e.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()+<span class="stringliteral">")"</span>);
<a name="l00227"></a>00227 }
<a name="l00228"></a>00228
<a name="l00229"></a>00229 vector<Expr> k1 = e.<a class="code" href="group__ExprPkg.html#ga1e18ae89889e781591eb2874a4196b73">getKids</a>();
<a name="l00230"></a>00230 <a class="code" href="classCVC3_1_1Op.html">Op</a> op(e.<a class="code" href="group__ExprPkg.html#gace479f04faca399219496195152f7806" title="Get operator from expression.">getOp</a>());
<a name="l00231"></a>00231
<a name="l00232"></a>00232 k1[itePos] = t1;
<a name="l00233"></a>00233 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> pred1 = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(op, k1);
<a name="l00234"></a>00234
<a name="l00235"></a>00235 k1[itePos] = t2;
<a name="l00236"></a>00236 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> pred2 = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(op, k1);
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> resultITE = cond.<a class="code" href="group__ExprPkg.html#ga5532cabad6f699c57da32a8db65a38da">iteExpr</a>(pred1, pred2);
<a name="l00239"></a>00239
<a name="l00240"></a>00240 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00241"></a>00241 <span class="keywordflow">if</span> (withProof())
<a name="l00242"></a>00242 pf = newPf(<span class="stringliteral">"if_lift_rule"</span>, e, resultITE, d_em->newRatExpr(itePos));
<a name="l00243"></a>00243 <span class="keywordflow">return</span> newRWTheorem(e, resultITE, Assumptions::emptyAssump(), pf);
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245
<a name="l00246"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#a65a0979bece96255a2ab2c81318258bf">00246</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> CNF_TheoremProducer::CNFtranslate(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& before,
<a name="l00247"></a>00247 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& after,
<a name="l00248"></a>00248 std::string reason,
<a name="l00249"></a>00249 <span class="keywordtype">int</span> pos,
<a name="l00250"></a>00250 <span class="keyword">const</span> vector<Theorem>& thms) {
<a name="l00251"></a>00251 <span class="comment">//well, this is assert the e as a theorem without any justification.</span>
<a name="l00252"></a>00252 <span class="comment">//change this as soon as possible</span>
<a name="l00253"></a>00253 <span class="comment">// cout << "###" << before; </span>
<a name="l00254"></a>00254 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00255"></a>00255 <span class="keywordflow">if</span> (withProof()){
<a name="l00256"></a>00256 vector<Expr> chs ;
<a name="l00257"></a>00257 chs.push_back(d_em->newStringExpr(reason));
<a name="l00258"></a>00258 chs.push_back(before);
<a name="l00259"></a>00259 chs.push_back(after);
<a name="l00260"></a>00260 chs.push_back(d_em->newRatExpr(pos));
<a name="l00261"></a>00261 vector<Proof> pfs;
<a name="l00262"></a>00262 <span class="keywordflow">for</span>(vector<Theorem>::const_iterator i = thms.begin(), iend= thms.end();
<a name="l00263"></a>00263 i != iend; i++){
<a name="l00264"></a>00264 pfs.push_back((*i).getProof());
<a name="l00265"></a>00265 }
<a name="l00266"></a>00266 pf = newPf(<span class="stringliteral">"CNF"</span>, chs, pfs );
<a name="l00267"></a>00267 }
<a name="l00268"></a>00268 <span class="keywordflow">return</span> newTheorem(after, <a class="code" href="classCVC3_1_1Assumptions.html">Assumptions</a>(thms), pf);
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270
<a name="l00271"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#a68e886da336116325c9d0c49182b9af7">00271</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> CNF_TheoremProducer::CNFITEtranslate(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& before,
<a name="l00272"></a>00272 <span class="keyword">const</span> vector<Expr>& after,
<a name="l00273"></a>00273 <span class="keyword">const</span> vector<Theorem>& thms,
<a name="l00274"></a>00274 <span class="keywordtype">int</span> pos){
<a name="l00275"></a>00275 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(3 == after.size(), <span class="stringliteral">"why this happens"</span>);
<a name="l00276"></a>00276 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(3 == thms.size(), <span class="stringliteral">"why this happens"</span>);
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00279"></a>00279 <span class="keywordflow">if</span> (withProof()){
<a name="l00280"></a>00280 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[0].getRHS() == after[0] , <span class="stringliteral">"this never happens"</span>);
<a name="l00281"></a>00281 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[1].getRHS() == after[1] , <span class="stringliteral">"this never happens"</span>);
<a name="l00282"></a>00282 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[2].getRHS() == after[2] , <span class="stringliteral">"this never happens"</span>);
<a name="l00283"></a>00283 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[0].getLHS() == before[0] , <span class="stringliteral">"this never happens"</span>);
<a name="l00284"></a>00284 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[1].getLHS() == before[1] , <span class="stringliteral">"this never happens"</span>);
<a name="l00285"></a>00285 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thms[2].getLHS() == before[2] , <span class="stringliteral">"this never happens"</span>);
<a name="l00286"></a>00286
<a name="l00287"></a>00287 vector<Expr> chs ;
<a name="l00288"></a>00288 chs.push_back(before);
<a name="l00289"></a>00289 chs.push_back(after[0]);
<a name="l00290"></a>00290 chs.push_back(after[1]);
<a name="l00291"></a>00291 chs.push_back(after[2]);
<a name="l00292"></a>00292 chs.push_back(d_em->newRatExpr(pos));
<a name="l00293"></a>00293 vector<Proof> pfs;
<a name="l00294"></a>00294 pfs.push_back(thms[0].getProof());
<a name="l00295"></a>00295 pfs.push_back(thms[1].getProof());
<a name="l00296"></a>00296 pfs.push_back(thms[2].getProof());
<a name="l00297"></a>00297 pf = newPf(<span class="stringliteral">"CNFITE"</span>, chs, pfs );
<a name="l00298"></a>00298 }
<a name="l00299"></a>00299
<a name="l00300"></a>00300 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> newe0 = after[0];
<a name="l00301"></a>00301 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> afterExpr = newe0.<a class="code" href="group__ExprPkg.html#ga5532cabad6f699c57da32a8db65a38da">iteExpr</a>(after[1],after[2]);
<a name="l00302"></a>00302 <span class="comment">//we should produce a newRWTheorm whenever possible and then use iffmp rule to get the desired result</span>
<a name="l00303"></a>00303 <span class="keywordflow">return</span> newTheorem(afterExpr, <a class="code" href="classCVC3_1_1Assumptions.html">Assumptions</a>(thms), pf);
<a name="l00304"></a>00304 }
<a name="l00305"></a>00305
<a name="l00306"></a>00306
<a name="l00307"></a>00307
<a name="l00308"></a>00308
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="comment">// because the way of cnf translation, add unit means the theorem from other parts of cvc3, not from cnf translation</span>
<a name="l00311"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#a68cf231265e15809589ed0c5bb530196">00311</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> CNF_TheoremProducer::CNFAddUnit(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm){
<a name="l00312"></a>00312
<a name="l00313"></a>00313 <span class="comment">//wrap the thm so the hol light translator know this</span>
<a name="l00314"></a>00314 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00315"></a>00315 <span class="keywordflow">if</span> (withProof()){
<a name="l00316"></a>00316 pf = newPf(<span class="stringliteral">"cnf_add_unit"</span>, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), thm.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>() );
<a name="l00317"></a>00317 }
<a name="l00318"></a>00318 <span class="keywordflow">return</span> newTheorem(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), thm.<a class="code" href="classCVC3_1_1Theorem.html#a5e9ab00a613df15cc02f55edb55a67b3">getAssumptionsRef</a>(), pf);
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320
<a name="l00321"></a><a class="code" href="classCVC3_1_1CNF__TheoremProducer.html#ac340fcb794b12ae7c521a37668d6751a">00321</a> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> CNF_TheoremProducer::CNFConvert(<span class="keyword">const</span> <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>& e, <span class="keyword">const</span> <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm){
<a name="l00322"></a>00322
<a name="l00323"></a>00323 <span class="comment">//wrap the thm so the hol light translator know this</span>
<a name="l00324"></a>00324 <a class="code" href="classCVC3_1_1Proof.html">Proof</a> pf;
<a name="l00325"></a>00325 <span class="keywordflow">if</span> (withProof()){
<a name="l00326"></a>00326 pf = newPf(<span class="stringliteral">"cnf_convert"</span>, e, thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), thm.<a class="code" href="classCVC3_1_1Theorem.html#a2d8352c07a756c3837683a27a1e659ef">getProof</a>() );
<a name="l00327"></a>00327 }
<a name="l00328"></a>00328 <a class="code" href="debug_8h.html#a40dac3bdb2166ffc852ee8b1489d2b56">DebugAssert</a>(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>().<a class="code" href="group__ExprPkg.html#ga36f1eff876808586db368dc1b6da5f56">isOr</a>(),<span class="stringliteral">"convert is not or exprs"</span>);
<a name="l00329"></a>00329 <span class="keywordflow">return</span> newTheorem(thm.<a class="code" href="classCVC3_1_1Theorem.html#af2b97ae5d270ddf1013bf4f3867a7e5d">getExpr</a>(), thm.<a class="code" href="classCVC3_1_1Theorem.html#a5e9ab00a613df15cc02f55edb55a67b3">getAssumptionsRef</a>(), pf);
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331
<a name="l00332"></a>00332
</pre></div></div>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Wed Sep 7 2011 for CVC3 by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
</body>
</html>
