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<div class="title">search.cpp</div> </div>
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<a href="search_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 search.cpp</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * Author: Clark Barrett, Vijay Ganesh (CNF Converter)</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Created: Fri Jan 17 14:19:54 2003</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * <hr></span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * License to use, copy, modify, sell and/or distribute this software</span>
<a name="l00012"></a>00012 <span class="comment"> * and its documentation for any purpose is hereby granted without</span>
<a name="l00013"></a>00013 <span class="comment"> * royalty, subject to the terms and conditions defined in the \ref</span>
<a name="l00014"></a>00014 <span class="comment"> * LICENSE file provided with this distribution.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * <hr></span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019 <span class="comment">/*****************************************************************************/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="search_8h.html" title="Abstract API to the proof search engine.">search.h</a>"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="search__rules_8h.html" title="Abstract proof rules interface to the simple search engine.">search_rules.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="theory__core_8h.html">theory_core.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="eval__exception_8h.html">eval_exception.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="theorem__manager_8h.html">theorem_manager.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="command__line__flags_8h.html">command_line_flags.h</a>"</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">using namespace </span>CVC3;
<a name="l00031"></a>00031 <span class="keyword">using namespace </span>std;
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment"></span>
<a name="l00034"></a>00034 <span class="comment">//! Constructor</span>
<a name="l00035"></a><a class="code" href="group__SE.html#ga2763859e03e0a91877d91e20a3d26a7a">00035</a> <span class="comment"></span><a class="code" href="group__SE.html#ga2763859e03e0a91877d91e20a3d26a7a" title="Constructor.">SearchEngine::SearchEngine</a>(<a class="code" href="classCVC3_1_1TheoryCore.html" title="This theory handles the built-in logical connectives plus equality. It also handles the registration ...">TheoryCore</a>* core)
<a name="l00036"></a>00036 : d_core(core),
<a name="l00037"></a>00037 d_commonRules(core->getTM()->getRules())
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">const</span> <a class="code" href="classCVC3_1_1CLFlags.html">CLFlags</a>& flg = (core-><a class="code" href="classCVC3_1_1TheoryCore.html#af3077cff0601b8ae28e420ef5ce2ea37">getTM</a>()-><a class="code" href="classCVC3_1_1TheoremManager.html#aac1a2b8c8dbec2d6e92c08fb0eaf2ec7">getFlags</a>());
<a name="l00041"></a>00041 <span class="keywordflow">if</span> (flg[<span class="stringliteral">"lfsc-mode"</span>].getInt()!= 0){
<a name="l00042"></a>00042 <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a> = <a class="code" href="group__SE.html#ga11dd236b3ba4ca5faad7563dfe6f3d72" title="Create the trusted component.">createRules</a>(<span class="keyword">this</span>);
<a name="l00043"></a>00043
<a name="l00044"></a>00044 }
<a name="l00045"></a>00045 <span class="keywordflow">else</span>
<a name="l00046"></a>00046 <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a> = <a class="code" href="group__SE.html#ga11dd236b3ba4ca5faad7563dfe6f3d72" title="Create the trusted component.">createRules</a>();
<a name="l00047"></a>00047
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment"></span>
<a name="l00051"></a>00051 <span class="comment">//! Destructor</span>
<a name="l00052"></a><a class="code" href="group__SE.html#ga863ab87efd742b9a8f20b87774ab570f">00052</a> <span class="comment"></span><a class="code" href="group__SE.html#ga863ab87efd742b9a8f20b87774ab570f" title="Destructor.">SearchEngine::~SearchEngine</a>()
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 <span class="keyword">delete</span> <a class="code" href="group__SE.html#ga879b68112123e2b4ae7175d85a03bfec" title="Proof rules for the search engine.">d_rules</a>;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a><a class="code" href="group__SE.html#ga44f1c2fefc202249cd2cda55d7712bdf">00057</a> <span class="keywordtype">bool</span> <a class="code" href="group__SE.html#ga44f1c2fefc202249cd2cda55d7712bdf" title="Try to build a concrete Model (assign values to variables), should only be called after a query which...">SearchEngine::tryModelGeneration</a>(<a class="code" href="classCVC3_1_1Theorem.html">Theorem</a>& thm) {
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga9757a6fd272ea550d0e910d20bd7d00b" title="Returns the result of the most recent valid theorem.">lastThm</a>().isNull()) <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a>(<span class="stringliteral">"Method tryModelGenereation() (or command COUNTERMODEL)\n must be called only after failed QUERY"</span>);
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="comment">// Save the scope level, to recover on errors</span>
<a name="l00062"></a>00062 <a class="code" href="group__SE.html#gadea197447ea40330f3b0739aa944c800" title="Push a checkpoint.">push</a>();
<a name="l00063"></a>00063 <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a21441c74132e9fcfb53d2b33bd8c622a" title="Split compound vars into basic type variables.">collectBasicVars</a>();
<a name="l00064"></a>00064 <span class="keywordtype">bool</span> success = <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a6822c229c357d1afcda22bc073d45142" title="Calls for other theories to add facts to refine a coutnerexample.">refineCounterExample</a>(thm);
<a name="l00065"></a>00065 <span class="keywordflow">if</span> (!success) {
<a name="l00066"></a>00066 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00067"></a>00067 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> qres = <a class="code" href="group__SE.html#ga34a9133f5342719526863d24cd1a0fcc" title="Checks the validity of a formula in the current context.">checkValid</a>(<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#a0bbf7c5b6079fc99a0f759e5809fe6f5" title="Return FALSE Expr.">falseExpr</a>(), thm);
<a name="l00071"></a>00071 <span class="keywordflow">if</span>(qres == <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498ba24f8f4860dbe6fd65883a9d7cbd2f576">VALID</a>) {
<a name="l00072"></a>00072 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00073"></a>00073 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00076"></a>00076 success = <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a6b5123c9d923a076385aa83a0fa37cf5" title="Calls theory specific computeModel, results are placed in map.">buildModel</a>(thm);
<a name="l00077"></a>00077 <span class="keywordflow">if</span> (!success) {
<a name="l00078"></a>00078 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00079"></a>00079 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 qres = <a class="code" href="group__SE.html#ga34a9133f5342719526863d24cd1a0fcc" title="Checks the validity of a formula in the current context.">checkValid</a>(<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#a0bbf7c5b6079fc99a0f759e5809fe6f5" title="Return FALSE Expr.">falseExpr</a>(), thm);
<a name="l00083"></a>00083 <span class="keywordflow">if</span>(qres == <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498ba24f8f4860dbe6fd65883a9d7cbd2f576">VALID</a>) {
<a name="l00084"></a>00084 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00085"></a>00085 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a><a class="code" href="group__SE.html#gae2a1cd46200160ac5855d7cd5f65517c">00091</a> <span class="keywordtype">void</span> <a class="code" href="group__SE.html#gae2a1cd46200160ac5855d7cd5f65517c" title="Build a concrete Model (assign values to variables), should only be called after a query which return...">SearchEngine::getConcreteModel</a>(<a class="code" href="classCVC3_1_1ExprMap.html">ExprMap<Expr></a>& m)
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"model"</span> , <span class="stringliteral">"Building a concrete model"</span>, <span class="stringliteral">""</span>, <span class="stringliteral">"{"</span>);
<a name="l00094"></a>00094 <span class="keywordflow">if</span>(!<a class="code" href="group__SE.html#ga9757a6fd272ea550d0e910d20bd7d00b" title="Returns the result of the most recent valid theorem.">lastThm</a>().isNull())
<a name="l00095"></a>00095 <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1EvalException.html">EvalException</a>
<a name="l00096"></a>00096 (<span class="stringliteral">"Method getConcreteModel() (or command COUNTERMODEL)\n"</span>
<a name="l00097"></a>00097 <span class="stringliteral">" must be called only after failed QUERY"</span>);
<a name="l00098"></a>00098 <span class="comment">// Save the scope level, to recover on errors</span>
<a name="l00099"></a>00099 <a class="code" href="group__SE.html#gadea197447ea40330f3b0739aa944c800" title="Push a checkpoint.">push</a>();
<a name="l00100"></a>00100 <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a21441c74132e9fcfb53d2b33bd8c622a" title="Split compound vars into basic type variables.">collectBasicVars</a>();
<a name="l00101"></a>00101 <span class="keywordflow">try</span> {
<a name="l00102"></a>00102 <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a6822c229c357d1afcda22bc073d45142" title="Calls for other theories to add facts to refine a coutnerexample.">refineCounterExample</a>();
<a name="l00103"></a>00103 } <span class="keywordflow">catch</span>(<a class="code" href="classCVC3_1_1Exception.html">Exception</a>& e) {
<a name="l00104"></a>00104 <span class="comment">// Clean up and re-throw the exception</span>
<a name="l00105"></a>00105 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00106"></a>00106 <span class="keywordflow">throw</span> e;
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 <a class="code" href="classCVC3_1_1Theorem.html">Theorem</a> thm;
<a name="l00109"></a>00109 <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498b">QueryResult</a> qres = <a class="code" href="group__SE.html#ga34a9133f5342719526863d24cd1a0fcc" title="Checks the validity of a formula in the current context.">checkValid</a>(<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#a0bbf7c5b6079fc99a0f759e5809fe6f5" title="Return FALSE Expr.">falseExpr</a>(), thm);
<a name="l00110"></a>00110 <span class="keywordflow">if</span>(qres == <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498ba24f8f4860dbe6fd65883a9d7cbd2f576">VALID</a>) {
<a name="l00111"></a>00111 vector<Expr> assump;
<a name="l00112"></a>00112 <a class="code" href="group__SE.html#ga3167148206cca25a3434cb8bb15c69fe" title="Get all assumptions made in this and all previous contexts.">getAssumptions</a>(assump);
<a name="l00113"></a>00113 <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a5c7d2aa7db5db78829b8558d28560ddf" title="Get the proof of inconsistency for the current context.">inconsistentThm</a>().<a class="code" href="classCVC3_1_1Theorem.html#a524b4dafa4fb8f14742baa856612d92b">getLeafAssumptions</a>(assump);
<a name="l00114"></a>00114 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> a = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(<a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba60238049e233c8d68fc58e4d5ceb55e2">RAW_LIST</a>, assump, <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#abc2e30308c9e1f3cf752cfe8d939df1e" title="Access to ExprManager.">getEM</a>());
<a name="l00115"></a>00115 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00116"></a>00116 <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1Exception.html">Exception</a>
<a name="l00117"></a>00117 (<span class="stringliteral">"Model Creation failed after refining counterexample\n"</span>
<a name="l00118"></a>00118 <span class="stringliteral">"due to the following assumptions:\n "</span>
<a name="l00119"></a>00119 +a.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()
<a name="l00120"></a>00120 +<span class="stringliteral">"\n\nYou might be using an incomplete fragment of the theory"</span>);
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 <span class="comment">// else if (qres != INVALID) {</span>
<a name="l00123"></a>00123 <span class="comment">// throw EvalException</span>
<a name="l00124"></a>00124 <span class="comment">// ("Unable to build concrete model");</span>
<a name="l00125"></a>00125 <span class="comment">// }</span>
<a name="l00126"></a>00126 <span class="keywordflow">try</span> {
<a name="l00127"></a>00127 <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1TheoryCore.html#a6b5123c9d923a076385aa83a0fa37cf5" title="Calls theory specific computeModel, results are placed in map.">buildModel</a>(m);
<a name="l00128"></a>00128 } <span class="keywordflow">catch</span>(<a class="code" href="classCVC3_1_1Exception.html">Exception</a>& e) {
<a name="l00129"></a>00129 <span class="comment">// Clean up and re-throw the exception</span>
<a name="l00130"></a>00130 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00131"></a>00131 <span class="keywordflow">throw</span> e;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 qres = <a class="code" href="group__SE.html#ga34a9133f5342719526863d24cd1a0fcc" title="Checks the validity of a formula in the current context.">checkValid</a>(<a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#a0bbf7c5b6079fc99a0f759e5809fe6f5" title="Return FALSE Expr.">falseExpr</a>(), thm);
<a name="l00134"></a>00134 <span class="keywordflow">if</span>(qres == <a class="code" href="namespaceCVC3.html#a060d21b3207cc3471e24f8dbcff3498ba24f8f4860dbe6fd65883a9d7cbd2f576">VALID</a>) {
<a name="l00135"></a>00135 vector<Expr> assump;
<a name="l00136"></a>00136 <a class="code" href="group__SE.html#ga3167148206cca25a3434cb8bb15c69fe" title="Get all assumptions made in this and all previous contexts.">getAssumptions</a>(assump);
<a name="l00137"></a>00137 <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a> a = <a class="code" href="classCVC3_1_1Expr.html" title="Data structure of expressions in CVC3.">Expr</a>(<a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba60238049e233c8d68fc58e4d5ceb55e2">RAW_LIST</a>, assump, <a class="code" href="group__SE.html#ga3772c6af7eac91b9ed7fc278edf5ef90" title="Access to theory reasoning.">d_core</a>-><a class="code" href="classCVC3_1_1Theory.html#abc2e30308c9e1f3cf752cfe8d939df1e" title="Access to ExprManager.">getEM</a>());
<a name="l00138"></a>00138 <a class="code" href="group__SE.html#ga2c7fa9d3a42a543ff23891110ad673e5" title="Restore last checkpoint.">pop</a>();
<a name="l00139"></a>00139 <span class="keywordflow">throw</span> <a class="code" href="classCVC3_1_1Exception.html">Exception</a>
<a name="l00140"></a>00140 (<span class="stringliteral">"Model Creation failed due to the following assumptions:\n"</span>
<a name="l00141"></a>00141 +a.<a class="code" href="group__ExprPkg.html#gaf3028bb1619f8cc69b66ec712e1adb54" title="Print the expression to a string.">toString</a>()
<a name="l00142"></a>00142 +<span class="stringliteral">"\n\nYou might be using an incomplete fragment of the theory"</span>);
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 <span class="comment">// else if (qres != INVALID) {</span>
<a name="l00145"></a>00145 <span class="comment">// throw EvalException</span>
<a name="l00146"></a>00146 <span class="comment">// ("Unable to build concrete model");</span>
<a name="l00147"></a>00147 <span class="comment">// }</span>
<a name="l00148"></a>00148 <a class="code" href="kinds_8h.html#aa10c9e8951b8ccf714a59ec321bdac5ba7fa27e82c6c4f69434225ed81e5d151e">TRACE</a>(<span class="stringliteral">"model"</span> , <span class="stringliteral">"Building a concrete model"</span>, <span class="stringliteral">""</span>, <span class="stringliteral">"}"</span>);
<a name="l00149"></a>00149 }
</pre></div></div>
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