Scope unsat benchmarks

12 files changed, 1334 insertions, 18 deletions

diff --git a/Domains/Examples/ModelGenExampleFAM_plugin/.project b/Domains/Examples/ModelGenExampleFAM_plugin/.project
index 6e1b3a06..570f8a60 100644
--- a/Domains/Examples/ModelGenExampleFAM_plugin/.project
+++ b/Domains/Examples/ModelGenExampleFAM_plugin/.project
@@ -6,6 +6,11 @@
         </projects>

         <buildSpec>

                 <buildCommand>

+                        <name>org.eclipse.xtext.ui.shared.xtextBuilder</name>

+                        <arguments>

+                        </arguments>

+                </buildCommand>

+                <buildCommand>

                         <name>org.eclipse.viatra.query.tooling.ui.projectbuilder</name>

                         <arguments>

                         </arguments>

@@ -30,5 +35,6 @@
                 <nature>org.eclipse.jdt.core.javanature</nature>

                 <nature>org.eclipse.viatra.query.projectnature</nature>

                 <nature>org.eclipse.pde.PluginNature</nature>

+                <nature>org.eclipse.xtext.ui.shared.xtextNature</nature>

         </natures>

 </projectDescription>

diff --git a/Domains/Examples/ModelGenExampleFAM_plugin/plugin.xml b/Domains/Examples/ModelGenExampleFAM_plugin/plugin.xml
index c117a28e..8d99d401 100644
--- a/Domains/Examples/ModelGenExampleFAM_plugin/plugin.xml
+++ b/Domains/Examples/ModelGenExampleFAM_plugin/plugin.xml
@@ -5,23 +5,13 @@
   <extension id="extension.derived.hu.bme.mit.inf.dslreasoner.domains.transima.fam.type" point="org.eclipse.viatra.query.runtime.base.wellbehaving.derived.features">
     <wellbehaving-derived-feature classifier-name="Function" feature-name="type" package-nsUri="http://www.inf.mit.bme.hu/viatrasolver/example/fam"/>
   </extension>
-   <extension point="org.eclipse.emf.ecore.generated_package">
-      <!-- @generated FamMetamodel -->
-      <package
-            uri="http://www.inf.mit.bme.hu/viatrasolver/example/fam"
-            class="functionalarchitecture.FunctionalarchitecturePackage"
-            genModel="model/FamMetamodel.genmodel"/>
-   </extension>
+  <extension point="org.eclipse.emf.ecore.generated_package">
+    <!-- @generated FamMetamodel -->
+    <package class="functionalarchitecture.FunctionalarchitecturePackage" genModel="model/FamMetamodel.genmodel" uri="http://www.inf.mit.bme.hu/viatrasolver/example/fam"/>
+  </extension>
   <extension id="hu.bme.mit.inf.dslreasoner.domains.transima.fam.FamPatterns" point="org.eclipse.viatra.query.runtime.queryspecification">
     <group group="org.eclipse.viatra.query.runtime.extensibility.SingletonExtensionFactory:hu.bme.mit.inf.dslreasoner.domains.transima.fam.FamPatterns" id="hu.bme.mit.inf.dslreasoner.domains.transima.fam.FamPatterns">
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.terminatorAndInformation"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.type"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.rootElements"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.parent"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.model"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.hasRoot"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.hasInt"/>
-      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.transima.fam.hasLeaf"/>
     </group>
   </extension>
 </plugin>
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql
index 78525a35..16c24d05 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql
@@ -11,6 +11,16 @@ pattern loopInInheritence(a: EClass) {
         find directSupertype+(a,a);

 }

 

+pattern unsat_subpackage(a: EPackage, b: EPackage) {

+        EPackage.eSubpackages(a, b);

+}

+

+@Constraint(key={p}, severity="error", message="error")

+pattern unsat_loopInInheritance(p: EPackage) {

+        neg find unsat_subpackage(_, p);

+        neg find loopInInheritence(_);

+}

+

 pattern opposite(a:EReference, b: EReference) {

         EReference.eOpposite(a,b);

 }

diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/plugin.xml b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/plugin.xml
index 6eae8535..eddd482c 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/plugin.xml
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/plugin.xml
@@ -11,6 +11,8 @@
     <group group="org.eclipse.viatra.query.runtime.extensibility.SingletonExtensionFactory:hu.bme.mit.inf.dslreasoner.domains.alloyexamples.Ecore" id="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.Ecore">
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.directSupertype"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.loopInInheritence"/>
+      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_subpackage"/>
+      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_loopInInheritance"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.opposite"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.oppositeDifferentClass"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.alloyexamples.nonSymmetricOpposite"/>
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/.gitignore b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/.gitignore
index 0f8c77a1..70eab455 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/.gitignore
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/.gitignore
@@ -54,3 +54,8 @@
 /.RootIsNotDir.java._trace
 /Dir.java
 /RootIsNotDir.java
+/.Unsat_loopInInheritance.java._trace
+/.Subpackage.java._trace
+/.Unsat_subpackage.java._trace
+/.Unsat_subpackageOrSelf.java._trace
+/.Unsat_topLevelPackageWithLoop.java._trace
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_loopInInheritance.java b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_loopInInheritance.java
new file mode 100644
index 00000000..83bd0f66
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_loopInInheritance.java
@@ -0,0 +1,566 @@
+/**
+ * Generated from platform:/resource/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql
+ */
+package hu.bme.mit.inf.dslreasoner.domains.alloyexamples;
+
+import hu.bme.mit.inf.dslreasoner.domains.alloyexamples.LoopInInheritence;
+import hu.bme.mit.inf.dslreasoner.domains.alloyexamples.Unsat_subpackage;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import org.apache.log4j.Logger;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.EPackage;
+import org.eclipse.viatra.query.runtime.api.IPatternMatch;
+import org.eclipse.viatra.query.runtime.api.IQuerySpecification;
+import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
+import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFPQuery;
+import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFQuerySpecification;
+import org.eclipse.viatra.query.runtime.api.impl.BaseMatcher;
+import org.eclipse.viatra.query.runtime.api.impl.BasePatternMatch;
+import org.eclipse.viatra.query.runtime.emf.types.EClassTransitiveInstancesKey;
+import org.eclipse.viatra.query.runtime.matchers.backend.QueryEvaluationHint;
+import org.eclipse.viatra.query.runtime.matchers.psystem.PBody;
+import org.eclipse.viatra.query.runtime.matchers.psystem.PVariable;
+import org.eclipse.viatra.query.runtime.matchers.psystem.annotations.PAnnotation;
+import org.eclipse.viatra.query.runtime.matchers.psystem.annotations.ParameterReference;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.ExportedParameter;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.NegativePatternCall;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.TypeConstraint;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameter;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameterDirection;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PVisibility;
+import org.eclipse.viatra.query.runtime.matchers.tuple.Tuple;
+import org.eclipse.viatra.query.runtime.matchers.tuple.Tuples;
+import org.eclipse.viatra.query.runtime.util.ViatraQueryLoggingUtil;
+
+/**
+ * A pattern-specific query specification that can instantiate Matcher in a type-safe way.
+ * 
+ * <p>Original source:
+ *         <code><pre>
+ *         {@literal @}Constraint(key={p}, severity="error", message="error")
+ *         pattern unsat_loopInInheritance(p: EPackage) {
+ *              neg find unsat_subpackage(_, p);
+ *              neg find loopInInheritence(_);
+ *         }
+ * </pre></code>
+ * 
+ * @see Matcher
+ * @see Match
+ * 
+ */
+@SuppressWarnings("all")
+public final class Unsat_loopInInheritance extends BaseGeneratedEMFQuerySpecification<Unsat_loopInInheritance.Matcher> {
+  /**
+   * Pattern-specific match representation of the hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_loopInInheritance pattern,
+   * to be used in conjunction with {@link Matcher}.
+   * 
+   * <p>Class fields correspond to parameters of the pattern. Fields with value null are considered unassigned.
+   * Each instance is a (possibly partial) substitution of pattern parameters,
+   * usable to represent a match of the pattern in the result of a query,
+   * or to specify the bound (fixed) input parameters when issuing a query.
+   * 
+   * @see Matcher
+   * 
+   */
+  public static abstract class Match extends BasePatternMatch {
+    private EPackage fP;
+    
+    private static List<String> parameterNames = makeImmutableList("p");
+    
+    private Match(final EPackage pP) {
+      this.fP = pP;
+    }
+    
+    @Override
+    public Object get(final String parameterName) {
+      switch(parameterName) {
+          case "p": return this.fP;
+          default: return null;
+      }
+    }
+    
+    @Override
+    public Object get(final int index) {
+      switch(index) {
+          case 0: return this.fP;
+          default: return null;
+      }
+    }
+    
+    public EPackage getP() {
+      return this.fP;
+    }
+    
+    @Override
+    public boolean set(final String parameterName, final Object newValue) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      if ("p".equals(parameterName) ) {
+          this.fP = (EPackage) newValue;
+          return true;
+      }
+      return false;
+    }
+    
+    public void setP(final EPackage pP) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      this.fP = pP;
+    }
+    
+    @Override
+    public String patternName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_loopInInheritance";
+    }
+    
+    @Override
+    public List<String> parameterNames() {
+      return Unsat_loopInInheritance.Match.parameterNames;
+    }
+    
+    @Override
+    public Object[] toArray() {
+      return new Object[]{fP};
+    }
+    
+    @Override
+    public Unsat_loopInInheritance.Match toImmutable() {
+      return isMutable() ? newMatch(fP) : this;
+    }
+    
+    @Override
+    public String prettyPrint() {
+      StringBuilder result = new StringBuilder();
+      result.append("\"p\"=" + prettyPrintValue(fP));
+      return result.toString();
+    }
+    
+    @Override
+    public int hashCode() {
+      return Objects.hash(fP);
+    }
+    
+    @Override
+    public boolean equals(final Object obj) {
+      if (this == obj)
+          return true;
+      if (obj == null) {
+          return false;
+      }
+      if ((obj instanceof Unsat_loopInInheritance.Match)) {
+          Unsat_loopInInheritance.Match other = (Unsat_loopInInheritance.Match) obj;
+          return Objects.equals(fP, other.fP);
+      } else {
+          // this should be infrequent
+          if (!(obj instanceof IPatternMatch)) {
+              return false;
+          }
+          IPatternMatch otherSig  = (IPatternMatch) obj;
+          return Objects.equals(specification(), otherSig.specification()) && Arrays.deepEquals(toArray(), otherSig.toArray());
+      }
+    }
+    
+    @Override
+    public Unsat_loopInInheritance specification() {
+      return Unsat_loopInInheritance.instance();
+    }
+    
+    /**
+     * Returns an empty, mutable match.
+     * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
+     * 
+     * @return the empty match.
+     * 
+     */
+    public static Unsat_loopInInheritance.Match newEmptyMatch() {
+      return new Mutable(null);
+    }
+    
+    /**
+     * Returns a mutable (partial) match.
+     * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
+     * 
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return the new, mutable (partial) match object.
+     * 
+     */
+    public static Unsat_loopInInheritance.Match newMutableMatch(final EPackage pP) {
+      return new Mutable(pP);
+    }
+    
+    /**
+     * Returns a new (partial) match.
+     * This can be used e.g. to call the matcher with a partial match.
+     * <p>The returned match will be immutable. Use {@link #newEmptyMatch()} to obtain a mutable match object.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public static Unsat_loopInInheritance.Match newMatch(final EPackage pP) {
+      return new Immutable(pP);
+    }
+    
+    private static final class Mutable extends Unsat_loopInInheritance.Match {
+      Mutable(final EPackage pP) {
+        super(pP);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return true;
+      }
+    }
+    
+    private static final class Immutable extends Unsat_loopInInheritance.Match {
+      Immutable(final EPackage pP) {
+        super(pP);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return false;
+      }
+    }
+  }
+  
+  /**
+   * Generated pattern matcher API of the hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_loopInInheritance pattern,
+   * providing pattern-specific query methods.
+   * 
+   * <p>Use the pattern matcher on a given model via {@link #on(ViatraQueryEngine)},
+   * e.g. in conjunction with {@link ViatraQueryEngine#on(QueryScope)}.
+   * 
+   * <p>Matches of the pattern will be represented as {@link Match}.
+   * 
+   * <p>Original source:
+   * <code><pre>
+   * {@literal @}Constraint(key={p}, severity="error", message="error")
+   * pattern unsat_loopInInheritance(p: EPackage) {
+   *    neg find unsat_subpackage(_, p);
+   *    neg find loopInInheritence(_);
+   * }
+   * </pre></code>
+   * 
+   * @see Match
+   * @see Unsat_loopInInheritance
+   * 
+   */
+  public static class Matcher extends BaseMatcher<Unsat_loopInInheritance.Match> {
+    /**
+     * Initializes the pattern matcher within an existing VIATRA Query engine.
+     * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
+     * 
+     * @param engine the existing VIATRA Query engine in which this matcher will be created.
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * 
+     */
+    public static Unsat_loopInInheritance.Matcher on(final ViatraQueryEngine engine) {
+      // check if matcher already exists
+      Matcher matcher = engine.getExistingMatcher(querySpecification());
+      if (matcher == null) {
+          matcher = (Matcher)engine.getMatcher(querySpecification());
+      }
+      return matcher;
+    }
+    
+    /**
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * @return an initialized matcher
+     * @noreference This method is for internal matcher initialization by the framework, do not call it manually.
+     * 
+     */
+    public static Unsat_loopInInheritance.Matcher create() {
+      return new Matcher();
+    }
+    
+    private static final int POSITION_P = 0;
+    
+    private static final Logger LOGGER = ViatraQueryLoggingUtil.getLogger(Unsat_loopInInheritance.Matcher.class);
+    
+    /**
+     * Initializes the pattern matcher within an existing VIATRA Query engine.
+     * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
+     * 
+     * @param engine the existing VIATRA Query engine in which this matcher will be created.
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * 
+     */
+    private Matcher() {
+      super(querySpecification());
+    }
+    
+    /**
+     * Returns the set of all matches of the pattern that conform to the given fixed values of some parameters.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return matches represented as a Match object.
+     * 
+     */
+    public Collection<Unsat_loopInInheritance.Match> getAllMatches(final EPackage pP) {
+      return rawStreamAllMatches(new Object[]{pP}).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Returns a stream of all matches of the pattern that conform to the given fixed values of some parameters.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return a stream of matches represented as a Match object.
+     * 
+     */
+    public Stream<Unsat_loopInInheritance.Match> streamAllMatches(final EPackage pP) {
+      return rawStreamAllMatches(new Object[]{pP});
+    }
+    
+    /**
+     * Returns an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
+     * Neither determinism nor randomness of selection is guaranteed.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return a match represented as a Match object, or null if no match is found.
+     * 
+     */
+    public Optional<Unsat_loopInInheritance.Match> getOneArbitraryMatch(final EPackage pP) {
+      return rawGetOneArbitraryMatch(new Object[]{pP});
+    }
+    
+    /**
+     * Indicates whether the given combination of specified pattern parameters constitute a valid pattern match,
+     * under any possible substitution of the unspecified parameters (if any).
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return true if the input is a valid (partial) match of the pattern.
+     * 
+     */
+    public boolean hasMatch(final EPackage pP) {
+      return rawHasMatch(new Object[]{pP});
+    }
+    
+    /**
+     * Returns the number of all matches of the pattern that conform to the given fixed values of some parameters.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return the number of pattern matches found.
+     * 
+     */
+    public int countMatches(final EPackage pP) {
+      return rawCountMatches(new Object[]{pP});
+    }
+    
+    /**
+     * Executes the given processor on an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
+     * Neither determinism nor randomness of selection is guaranteed.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @param processor the action that will process the selected match.
+     * @return true if the pattern has at least one match with the given parameter values, false if the processor was not invoked
+     * 
+     */
+    public boolean forOneArbitraryMatch(final EPackage pP, final Consumer<? super Unsat_loopInInheritance.Match> processor) {
+      return rawForOneArbitraryMatch(new Object[]{pP}, processor);
+    }
+    
+    /**
+     * Returns a new (partial) match.
+     * This can be used e.g. to call the matcher with a partial match.
+     * <p>The returned match will be immutable. Use {@link #newEmptyMatch()} to obtain a mutable match object.
+     * @param pP the fixed value of pattern parameter p, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public Unsat_loopInInheritance.Match newMatch(final EPackage pP) {
+      return Unsat_loopInInheritance.Match.newMatch(pP);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for p.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    protected Stream<EPackage> rawStreamAllValuesOfp(final Object[] parameters) {
+      return rawStreamAllValues(POSITION_P, parameters).map(EPackage.class::cast);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for p.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfp() {
+      return rawStreamAllValuesOfp(emptyArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for p.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfp() {
+      return rawStreamAllValuesOfp(emptyArray());
+    }
+    
+    @Override
+    protected Unsat_loopInInheritance.Match tupleToMatch(final Tuple t) {
+      try {
+          return Unsat_loopInInheritance.Match.newMatch((EPackage) t.get(POSITION_P));
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in tuple not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Unsat_loopInInheritance.Match arrayToMatch(final Object[] match) {
+      try {
+          return Unsat_loopInInheritance.Match.newMatch((EPackage) match[POSITION_P]);
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in array not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Unsat_loopInInheritance.Match arrayToMatchMutable(final Object[] match) {
+      try {
+          return Unsat_loopInInheritance.Match.newMutableMatch((EPackage) match[POSITION_P]);
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in array not properly typed!",e);
+          return null;
+      }
+    }
+    
+    /**
+     * @return the singleton instance of the query specification of this pattern
+     * @throws ViatraQueryRuntimeException if the pattern definition could not be loaded
+     * 
+     */
+    public static IQuerySpecification<Unsat_loopInInheritance.Matcher> querySpecification() {
+      return Unsat_loopInInheritance.instance();
+    }
+  }
+  
+  private Unsat_loopInInheritance() {
+    super(GeneratedPQuery.INSTANCE);
+  }
+  
+  /**
+   * @return the singleton instance of the query specification
+   * @throws ViatraQueryRuntimeException if the pattern definition could not be loaded
+   * 
+   */
+  public static Unsat_loopInInheritance instance() {
+    try{
+        return LazyHolder.INSTANCE;
+    } catch (ExceptionInInitializerError err) {
+        throw processInitializerError(err);
+    }
+  }
+  
+  @Override
+  protected Unsat_loopInInheritance.Matcher instantiate(final ViatraQueryEngine engine) {
+    return Unsat_loopInInheritance.Matcher.on(engine);
+  }
+  
+  @Override
+  public Unsat_loopInInheritance.Matcher instantiate() {
+    return Unsat_loopInInheritance.Matcher.create();
+  }
+  
+  @Override
+  public Unsat_loopInInheritance.Match newEmptyMatch() {
+    return Unsat_loopInInheritance.Match.newEmptyMatch();
+  }
+  
+  @Override
+  public Unsat_loopInInheritance.Match newMatch(final Object... parameters) {
+    return Unsat_loopInInheritance.Match.newMatch((org.eclipse.emf.ecore.EPackage) parameters[0]);
+  }
+  
+  /**
+   * Inner class allowing the singleton instance of {@link Unsat_loopInInheritance} to be created 
+   *     <b>not</b> at the class load time of the outer class, 
+   *     but rather at the first call to {@link Unsat_loopInInheritance#instance()}.
+   * 
+   * <p> This workaround is required e.g. to support recursion.
+   * 
+   */
+  private static class LazyHolder {
+    private static final Unsat_loopInInheritance INSTANCE = new Unsat_loopInInheritance();
+    
+    /**
+     * Statically initializes the query specification <b>after</b> the field {@link #INSTANCE} is assigned.
+     * This initialization order is required to support indirect recursion.
+     * 
+     * <p> The static initializer is defined using a helper field to work around limitations of the code generator.
+     * 
+     */
+    private static final Object STATIC_INITIALIZER = ensureInitialized();
+    
+    public static Object ensureInitialized() {
+      INSTANCE.ensureInitializedInternal();
+      return null;
+    }
+  }
+  
+  private static class GeneratedPQuery extends BaseGeneratedEMFPQuery {
+    private static final Unsat_loopInInheritance.GeneratedPQuery INSTANCE = new GeneratedPQuery();
+    
+    private final PParameter parameter_p = new PParameter("p", "org.eclipse.emf.ecore.EPackage", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.eclipse.org/emf/2002/Ecore", "EPackage")), PParameterDirection.INOUT);
+    
+    private final List<PParameter> parameters = Arrays.asList(parameter_p);
+    
+    private GeneratedPQuery() {
+      super(PVisibility.PUBLIC);
+    }
+    
+    @Override
+    public String getFullyQualifiedName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_loopInInheritance";
+    }
+    
+    @Override
+    public List<String> getParameterNames() {
+      return Arrays.asList("p");
+    }
+    
+    @Override
+    public List<PParameter> getParameters() {
+      return parameters;
+    }
+    
+    @Override
+    public Set<PBody> doGetContainedBodies() {
+      setEvaluationHints(new QueryEvaluationHint(null, QueryEvaluationHint.BackendRequirement.UNSPECIFIED));
+      Set<PBody> bodies = new LinkedHashSet<>();
+      {
+          PBody body = new PBody(this);
+          PVariable var_p = body.getOrCreateVariableByName("p");
+          PVariable var___0_ = body.getOrCreateVariableByName("_<0>");
+          PVariable var___1_ = body.getOrCreateVariableByName("_<1>");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_p), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage")));
+          body.setSymbolicParameters(Arrays.<ExportedParameter>asList(
+             new ExportedParameter(body, var_p, parameter_p)
+          ));
+          //    neg find unsat_subpackage(_, p)
+          new NegativePatternCall(body, Tuples.flatTupleOf(var___0_, var_p), Unsat_subpackage.instance().getInternalQueryRepresentation());
+          //    neg find loopInInheritence(_)
+          new NegativePatternCall(body, Tuples.flatTupleOf(var___1_), LoopInInheritence.instance().getInternalQueryRepresentation());
+          bodies.add(body);
+      }
+      {
+          PAnnotation annotation = new PAnnotation("Constraint");
+          annotation.addAttribute("key", Arrays.asList(new Object[] {
+                              new ParameterReference("p")
+                              }));
+          annotation.addAttribute("severity", "error");
+          annotation.addAttribute("message", "error");
+          addAnnotation(annotation);
+      }
+      return bodies;
+    }
+  }
+}
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_subpackage.java b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_subpackage.java
new file mode 100644
index 00000000..a9c8aed8
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Unsat_subpackage.java
@@ -0,0 +1,704 @@
+/**
+ * Generated from platform:/resource/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/patterns/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/Ecore.vql
+ */
+package hu.bme.mit.inf.dslreasoner.domains.alloyexamples;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+import java.util.function.Consumer;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import org.apache.log4j.Logger;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.EPackage;
+import org.eclipse.viatra.query.runtime.api.IPatternMatch;
+import org.eclipse.viatra.query.runtime.api.IQuerySpecification;
+import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine;
+import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFPQuery;
+import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFQuerySpecification;
+import org.eclipse.viatra.query.runtime.api.impl.BaseMatcher;
+import org.eclipse.viatra.query.runtime.api.impl.BasePatternMatch;
+import org.eclipse.viatra.query.runtime.emf.types.EClassTransitiveInstancesKey;
+import org.eclipse.viatra.query.runtime.emf.types.EStructuralFeatureInstancesKey;
+import org.eclipse.viatra.query.runtime.matchers.backend.QueryEvaluationHint;
+import org.eclipse.viatra.query.runtime.matchers.psystem.PBody;
+import org.eclipse.viatra.query.runtime.matchers.psystem.PVariable;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.Equality;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.ExportedParameter;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.TypeConstraint;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameter;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameterDirection;
+import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PVisibility;
+import org.eclipse.viatra.query.runtime.matchers.tuple.Tuple;
+import org.eclipse.viatra.query.runtime.matchers.tuple.Tuples;
+import org.eclipse.viatra.query.runtime.util.ViatraQueryLoggingUtil;
+
+/**
+ * A pattern-specific query specification that can instantiate Matcher in a type-safe way.
+ * 
+ * <p>Original source:
+ *         <code><pre>
+ *         pattern unsat_subpackage(a: EPackage, b: EPackage) {
+ *              EPackage.eSubpackages(a, b);
+ *         }
+ * </pre></code>
+ * 
+ * @see Matcher
+ * @see Match
+ * 
+ */
+@SuppressWarnings("all")
+public final class Unsat_subpackage extends BaseGeneratedEMFQuerySpecification<Unsat_subpackage.Matcher> {
+  /**
+   * Pattern-specific match representation of the hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_subpackage pattern,
+   * to be used in conjunction with {@link Matcher}.
+   * 
+   * <p>Class fields correspond to parameters of the pattern. Fields with value null are considered unassigned.
+   * Each instance is a (possibly partial) substitution of pattern parameters,
+   * usable to represent a match of the pattern in the result of a query,
+   * or to specify the bound (fixed) input parameters when issuing a query.
+   * 
+   * @see Matcher
+   * 
+   */
+  public static abstract class Match extends BasePatternMatch {
+    private EPackage fA;
+    
+    private EPackage fB;
+    
+    private static List<String> parameterNames = makeImmutableList("a", "b");
+    
+    private Match(final EPackage pA, final EPackage pB) {
+      this.fA = pA;
+      this.fB = pB;
+    }
+    
+    @Override
+    public Object get(final String parameterName) {
+      switch(parameterName) {
+          case "a": return this.fA;
+          case "b": return this.fB;
+          default: return null;
+      }
+    }
+    
+    @Override
+    public Object get(final int index) {
+      switch(index) {
+          case 0: return this.fA;
+          case 1: return this.fB;
+          default: return null;
+      }
+    }
+    
+    public EPackage getA() {
+      return this.fA;
+    }
+    
+    public EPackage getB() {
+      return this.fB;
+    }
+    
+    @Override
+    public boolean set(final String parameterName, final Object newValue) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      if ("a".equals(parameterName) ) {
+          this.fA = (EPackage) newValue;
+          return true;
+      }
+      if ("b".equals(parameterName) ) {
+          this.fB = (EPackage) newValue;
+          return true;
+      }
+      return false;
+    }
+    
+    public void setA(final EPackage pA) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      this.fA = pA;
+    }
+    
+    public void setB(final EPackage pB) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      this.fB = pB;
+    }
+    
+    @Override
+    public String patternName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_subpackage";
+    }
+    
+    @Override
+    public List<String> parameterNames() {
+      return Unsat_subpackage.Match.parameterNames;
+    }
+    
+    @Override
+    public Object[] toArray() {
+      return new Object[]{fA, fB};
+    }
+    
+    @Override
+    public Unsat_subpackage.Match toImmutable() {
+      return isMutable() ? newMatch(fA, fB) : this;
+    }
+    
+    @Override
+    public String prettyPrint() {
+      StringBuilder result = new StringBuilder();
+      result.append("\"a\"=" + prettyPrintValue(fA) + ", ");
+      result.append("\"b\"=" + prettyPrintValue(fB));
+      return result.toString();
+    }
+    
+    @Override
+    public int hashCode() {
+      return Objects.hash(fA, fB);
+    }
+    
+    @Override
+    public boolean equals(final Object obj) {
+      if (this == obj)
+          return true;
+      if (obj == null) {
+          return false;
+      }
+      if ((obj instanceof Unsat_subpackage.Match)) {
+          Unsat_subpackage.Match other = (Unsat_subpackage.Match) obj;
+          return Objects.equals(fA, other.fA) && Objects.equals(fB, other.fB);
+      } else {
+          // this should be infrequent
+          if (!(obj instanceof IPatternMatch)) {
+              return false;
+          }
+          IPatternMatch otherSig  = (IPatternMatch) obj;
+          return Objects.equals(specification(), otherSig.specification()) && Arrays.deepEquals(toArray(), otherSig.toArray());
+      }
+    }
+    
+    @Override
+    public Unsat_subpackage specification() {
+      return Unsat_subpackage.instance();
+    }
+    
+    /**
+     * Returns an empty, mutable match.
+     * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
+     * 
+     * @return the empty match.
+     * 
+     */
+    public static Unsat_subpackage.Match newEmptyMatch() {
+      return new Mutable(null, null);
+    }
+    
+    /**
+     * Returns a mutable (partial) match.
+     * Fields of the mutable match can be filled to create a partial match, usable as matcher input.
+     * 
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return the new, mutable (partial) match object.
+     * 
+     */
+    public static Unsat_subpackage.Match newMutableMatch(final EPackage pA, final EPackage pB) {
+      return new Mutable(pA, pB);
+    }
+    
+    /**
+     * Returns a new (partial) match.
+     * This can be used e.g. to call the matcher with a partial match.
+     * <p>The returned match will be immutable. Use {@link #newEmptyMatch()} to obtain a mutable match object.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public static Unsat_subpackage.Match newMatch(final EPackage pA, final EPackage pB) {
+      return new Immutable(pA, pB);
+    }
+    
+    private static final class Mutable extends Unsat_subpackage.Match {
+      Mutable(final EPackage pA, final EPackage pB) {
+        super(pA, pB);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return true;
+      }
+    }
+    
+    private static final class Immutable extends Unsat_subpackage.Match {
+      Immutable(final EPackage pA, final EPackage pB) {
+        super(pA, pB);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return false;
+      }
+    }
+  }
+  
+  /**
+   * Generated pattern matcher API of the hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_subpackage pattern,
+   * providing pattern-specific query methods.
+   * 
+   * <p>Use the pattern matcher on a given model via {@link #on(ViatraQueryEngine)},
+   * e.g. in conjunction with {@link ViatraQueryEngine#on(QueryScope)}.
+   * 
+   * <p>Matches of the pattern will be represented as {@link Match}.
+   * 
+   * <p>Original source:
+   * <code><pre>
+   * pattern unsat_subpackage(a: EPackage, b: EPackage) {
+   *    EPackage.eSubpackages(a, b);
+   * }
+   * </pre></code>
+   * 
+   * @see Match
+   * @see Unsat_subpackage
+   * 
+   */
+  public static class Matcher extends BaseMatcher<Unsat_subpackage.Match> {
+    /**
+     * Initializes the pattern matcher within an existing VIATRA Query engine.
+     * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
+     * 
+     * @param engine the existing VIATRA Query engine in which this matcher will be created.
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * 
+     */
+    public static Unsat_subpackage.Matcher on(final ViatraQueryEngine engine) {
+      // check if matcher already exists
+      Matcher matcher = engine.getExistingMatcher(querySpecification());
+      if (matcher == null) {
+          matcher = (Matcher)engine.getMatcher(querySpecification());
+      }
+      return matcher;
+    }
+    
+    /**
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * @return an initialized matcher
+     * @noreference This method is for internal matcher initialization by the framework, do not call it manually.
+     * 
+     */
+    public static Unsat_subpackage.Matcher create() {
+      return new Matcher();
+    }
+    
+    private static final int POSITION_A = 0;
+    
+    private static final int POSITION_B = 1;
+    
+    private static final Logger LOGGER = ViatraQueryLoggingUtil.getLogger(Unsat_subpackage.Matcher.class);
+    
+    /**
+     * Initializes the pattern matcher within an existing VIATRA Query engine.
+     * If the pattern matcher is already constructed in the engine, only a light-weight reference is returned.
+     * 
+     * @param engine the existing VIATRA Query engine in which this matcher will be created.
+     * @throws ViatraQueryRuntimeException if an error occurs during pattern matcher creation
+     * 
+     */
+    private Matcher() {
+      super(querySpecification());
+    }
+    
+    /**
+     * Returns the set of all matches of the pattern that conform to the given fixed values of some parameters.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return matches represented as a Match object.
+     * 
+     */
+    public Collection<Unsat_subpackage.Match> getAllMatches(final EPackage pA, final EPackage pB) {
+      return rawStreamAllMatches(new Object[]{pA, pB}).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Returns a stream of all matches of the pattern that conform to the given fixed values of some parameters.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return a stream of matches represented as a Match object.
+     * 
+     */
+    public Stream<Unsat_subpackage.Match> streamAllMatches(final EPackage pA, final EPackage pB) {
+      return rawStreamAllMatches(new Object[]{pA, pB});
+    }
+    
+    /**
+     * Returns an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
+     * Neither determinism nor randomness of selection is guaranteed.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return a match represented as a Match object, or null if no match is found.
+     * 
+     */
+    public Optional<Unsat_subpackage.Match> getOneArbitraryMatch(final EPackage pA, final EPackage pB) {
+      return rawGetOneArbitraryMatch(new Object[]{pA, pB});
+    }
+    
+    /**
+     * Indicates whether the given combination of specified pattern parameters constitute a valid pattern match,
+     * under any possible substitution of the unspecified parameters (if any).
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return true if the input is a valid (partial) match of the pattern.
+     * 
+     */
+    public boolean hasMatch(final EPackage pA, final EPackage pB) {
+      return rawHasMatch(new Object[]{pA, pB});
+    }
+    
+    /**
+     * Returns the number of all matches of the pattern that conform to the given fixed values of some parameters.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return the number of pattern matches found.
+     * 
+     */
+    public int countMatches(final EPackage pA, final EPackage pB) {
+      return rawCountMatches(new Object[]{pA, pB});
+    }
+    
+    /**
+     * Executes the given processor on an arbitrarily chosen match of the pattern that conforms to the given fixed values of some parameters.
+     * Neither determinism nor randomness of selection is guaranteed.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @param processor the action that will process the selected match.
+     * @return true if the pattern has at least one match with the given parameter values, false if the processor was not invoked
+     * 
+     */
+    public boolean forOneArbitraryMatch(final EPackage pA, final EPackage pB, final Consumer<? super Unsat_subpackage.Match> processor) {
+      return rawForOneArbitraryMatch(new Object[]{pA, pB}, processor);
+    }
+    
+    /**
+     * Returns a new (partial) match.
+     * This can be used e.g. to call the matcher with a partial match.
+     * <p>The returned match will be immutable. Use {@link #newEmptyMatch()} to obtain a mutable match object.
+     * @param pA the fixed value of pattern parameter a, or null if not bound.
+     * @param pB the fixed value of pattern parameter b, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public Unsat_subpackage.Match newMatch(final EPackage pA, final EPackage pB) {
+      return Unsat_subpackage.Match.newMatch(pA, pB);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    protected Stream<EPackage> rawStreamAllValuesOfa(final Object[] parameters) {
+      return rawStreamAllValues(POSITION_A, parameters).map(EPackage.class::cast);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfa() {
+      return rawStreamAllValuesOfa(emptyArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfa() {
+      return rawStreamAllValuesOfa(emptyArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     *      
+     * @return the Stream of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfa(final Unsat_subpackage.Match partialMatch) {
+      return rawStreamAllValuesOfa(partialMatch.toArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     *      
+     * @return the Stream of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfa(final EPackage pB) {
+      return rawStreamAllValuesOfa(new Object[]{null, pB});
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfa(final Unsat_subpackage.Match partialMatch) {
+      return rawStreamAllValuesOfa(partialMatch.toArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for a.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfa(final EPackage pB) {
+      return rawStreamAllValuesOfa(new Object[]{null, pB}).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    protected Stream<EPackage> rawStreamAllValuesOfb(final Object[] parameters) {
+      return rawStreamAllValues(POSITION_B, parameters).map(EPackage.class::cast);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfb() {
+      return rawStreamAllValuesOfb(emptyArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfb() {
+      return rawStreamAllValuesOfb(emptyArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     *      
+     * @return the Stream of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfb(final Unsat_subpackage.Match partialMatch) {
+      return rawStreamAllValuesOfb(partialMatch.toArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * </p>
+     * <strong>NOTE</strong>: It is important not to modify the source model while the stream is being processed.
+     * If the match set of the pattern changes during processing, the contents of the stream is <strong>undefined</strong>.
+     * In such cases, either rely on {@link #getAllMatches()} or collect the results of the stream in end-user code.
+     *      
+     * @return the Stream of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<EPackage> streamAllValuesOfb(final EPackage pA) {
+      return rawStreamAllValuesOfb(new Object[]{pA, null});
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfb(final Unsat_subpackage.Match partialMatch) {
+      return rawStreamAllValuesOfb(partialMatch.toArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for b.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<EPackage> getAllValuesOfb(final EPackage pA) {
+      return rawStreamAllValuesOfb(new Object[]{pA, null}).collect(Collectors.toSet());
+    }
+    
+    @Override
+    protected Unsat_subpackage.Match tupleToMatch(final Tuple t) {
+      try {
+          return Unsat_subpackage.Match.newMatch((EPackage) t.get(POSITION_A), (EPackage) t.get(POSITION_B));
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in tuple not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Unsat_subpackage.Match arrayToMatch(final Object[] match) {
+      try {
+          return Unsat_subpackage.Match.newMatch((EPackage) match[POSITION_A], (EPackage) match[POSITION_B]);
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in array not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Unsat_subpackage.Match arrayToMatchMutable(final Object[] match) {
+      try {
+          return Unsat_subpackage.Match.newMutableMatch((EPackage) match[POSITION_A], (EPackage) match[POSITION_B]);
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in array not properly typed!",e);
+          return null;
+      }
+    }
+    
+    /**
+     * @return the singleton instance of the query specification of this pattern
+     * @throws ViatraQueryRuntimeException if the pattern definition could not be loaded
+     * 
+     */
+    public static IQuerySpecification<Unsat_subpackage.Matcher> querySpecification() {
+      return Unsat_subpackage.instance();
+    }
+  }
+  
+  private Unsat_subpackage() {
+    super(GeneratedPQuery.INSTANCE);
+  }
+  
+  /**
+   * @return the singleton instance of the query specification
+   * @throws ViatraQueryRuntimeException if the pattern definition could not be loaded
+   * 
+   */
+  public static Unsat_subpackage instance() {
+    try{
+        return LazyHolder.INSTANCE;
+    } catch (ExceptionInInitializerError err) {
+        throw processInitializerError(err);
+    }
+  }
+  
+  @Override
+  protected Unsat_subpackage.Matcher instantiate(final ViatraQueryEngine engine) {
+    return Unsat_subpackage.Matcher.on(engine);
+  }
+  
+  @Override
+  public Unsat_subpackage.Matcher instantiate() {
+    return Unsat_subpackage.Matcher.create();
+  }
+  
+  @Override
+  public Unsat_subpackage.Match newEmptyMatch() {
+    return Unsat_subpackage.Match.newEmptyMatch();
+  }
+  
+  @Override
+  public Unsat_subpackage.Match newMatch(final Object... parameters) {
+    return Unsat_subpackage.Match.newMatch((org.eclipse.emf.ecore.EPackage) parameters[0], (org.eclipse.emf.ecore.EPackage) parameters[1]);
+  }
+  
+  /**
+   * Inner class allowing the singleton instance of {@link Unsat_subpackage} to be created 
+   *     <b>not</b> at the class load time of the outer class, 
+   *     but rather at the first call to {@link Unsat_subpackage#instance()}.
+   * 
+   * <p> This workaround is required e.g. to support recursion.
+   * 
+   */
+  private static class LazyHolder {
+    private static final Unsat_subpackage INSTANCE = new Unsat_subpackage();
+    
+    /**
+     * Statically initializes the query specification <b>after</b> the field {@link #INSTANCE} is assigned.
+     * This initialization order is required to support indirect recursion.
+     * 
+     * <p> The static initializer is defined using a helper field to work around limitations of the code generator.
+     * 
+     */
+    private static final Object STATIC_INITIALIZER = ensureInitialized();
+    
+    public static Object ensureInitialized() {
+      INSTANCE.ensureInitializedInternal();
+      return null;
+    }
+  }
+  
+  private static class GeneratedPQuery extends BaseGeneratedEMFPQuery {
+    private static final Unsat_subpackage.GeneratedPQuery INSTANCE = new GeneratedPQuery();
+    
+    private final PParameter parameter_a = new PParameter("a", "org.eclipse.emf.ecore.EPackage", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.eclipse.org/emf/2002/Ecore", "EPackage")), PParameterDirection.INOUT);
+    
+    private final PParameter parameter_b = new PParameter("b", "org.eclipse.emf.ecore.EPackage", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.eclipse.org/emf/2002/Ecore", "EPackage")), PParameterDirection.INOUT);
+    
+    private final List<PParameter> parameters = Arrays.asList(parameter_a, parameter_b);
+    
+    private GeneratedPQuery() {
+      super(PVisibility.PUBLIC);
+    }
+    
+    @Override
+    public String getFullyQualifiedName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.alloyexamples.unsat_subpackage";
+    }
+    
+    @Override
+    public List<String> getParameterNames() {
+      return Arrays.asList("a","b");
+    }
+    
+    @Override
+    public List<PParameter> getParameters() {
+      return parameters;
+    }
+    
+    @Override
+    public Set<PBody> doGetContainedBodies() {
+      setEvaluationHints(new QueryEvaluationHint(null, QueryEvaluationHint.BackendRequirement.UNSPECIFIED));
+      Set<PBody> bodies = new LinkedHashSet<>();
+      {
+          PBody body = new PBody(this);
+          PVariable var_a = body.getOrCreateVariableByName("a");
+          PVariable var_b = body.getOrCreateVariableByName("b");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_a), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var_b), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage")));
+          body.setSymbolicParameters(Arrays.<ExportedParameter>asList(
+             new ExportedParameter(body, var_a, parameter_a),
+             new ExportedParameter(body, var_b, parameter_b)
+          ));
+          //    EPackage.eSubpackages(a, b)
+          new TypeConstraint(body, Tuples.flatTupleOf(var_a), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage")));
+          PVariable var__virtual_0_ = body.getOrCreateVariableByName(".virtual{0}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_a, var__virtual_0_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage", "eSubpackages")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_0_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EPackage")));
+          new Equality(body, var__virtual_0_, var_b);
+          bodies.add(body);
+      }
+      return bodies;
+    }
+  }
+}
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/internal/.gitignore b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/internal/.gitignore
new file mode 100644
index 00000000..995169ff
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.alloyexamples/src-gen/hu/bme/mit/inf/dslreasoner/domains/alloyexamples/internal/.gitignore
@@ -0,0 +1,4 @@
+/.EcoreAll.java._trace
+/.SubpackageOrSelf.java._trace
+/.Subpackage.java._trace
+/.TopLevelPackageWithLoop.java._trace
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/plugin.xml b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/plugin.xml
index b0b77996..fe1af62e 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/plugin.xml
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/plugin.xml
@@ -1,9 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?><?eclipse version="3.0"?><!--
 --><plugin>
-  <extension point="org.eclipse.emf.ecore.generated_package">
-    <!-- @generated satellite -->
-    <package class="satellite.SatellitePackage" genModel="model/satellite.genmodel" uri="http://www.example.org/satellite"/>
-  </extension>
+   <extension point="org.eclipse.emf.ecore.generated_package">
+      <!-- @generated satellite -->
+      <package
+            uri="http://www.example.org/satellite"
+            class="satellite.SatellitePackage"
+            genModel="model/satellite.genmodel"/>
+   </extension>
   <extension id="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.SatelliteQueries" point="org.eclipse.viatra.query.runtime.queryspecification">
     <group group="org.eclipse.viatra.query.runtime.extensibility.SingletonExtensionFactory:hu.bme.mit.inf.dslreasoner.domains.satellite.queries.SatelliteQueries" id="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.SatelliteQueries">
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.communicationLinkDoesNotStartAtContainingElement"/>
@@ -11,6 +14,7 @@
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.roundStationNetworkUHF"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.notEnoughInterferometryPayloads"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.noLinkToGroundStation"/>
+      <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.unsat_linkToGroundStation"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.noPotentialLinkToGroundStation"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.communicationLoop"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.domains.satellite.queries.incompatibleSourceAndTargetBand"/>
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql
index 1f83a3b0..ba12bbda 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql
@@ -59,6 +59,19 @@ pattern noLinkToGroundStation(Spacecraft : Spacecraft) {
         neg find indirectCommunicationLink(Spacecraft, GroundStation);
 }
 
+//@Constraint(severity = "error", key = {Spacecraft}, message = "UNSAT")
+//pattern unsat_linkToGroundStation(Spacecraft : Spacecraft) {
+//      ConstellationMission.groundStationNetwork(Mission, GroundStation);
+//      ConstellationMission.spacecraft(Mission, Spacecraft);
+//      find indirectCommunicationLink(Spacecraft, GroundStation);
+//}
+
+@Constraint(severity = "error", key = {Mission}, message = "UNSAT")
+pattern unsat_linkToGroundStation(Mission : InterferometryMission) {
+        InterferometryMission(Mission);
+        neg find noLinkToGroundStation(_);
+}
+
 @Constraint(severity = "error", key = {Spacecraft},
         message = "Spacecraft has no potential communication path to the ground station.")
 pattern noPotentialLinkToGroundStation(Spacecraft : Spacecraft) {
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/plugin.xml b/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/plugin.xml
index 7bf4a20b..d4ab204e 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/plugin.xml
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/plugin.xml
@@ -8,6 +8,7 @@
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.entryInRegion"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.noEntryInRegion"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.multipleEntryInRegion"/>
+      <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.unsat_multipleEntryInRegion"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.transition"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.transitionFrom"/>
       <query-specification fqn="hu.bme.mit.inf.dslreasoner.partialsnapshot_mavo.yakindu.transitionTo"/>
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/queries/hu/bme/mit/inf/dslreasoner/partialsnapshot_mavo/yakindu/patterns.vql b/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/queries/hu/bme/mit/inf/dslreasoner/partialsnapshot_mavo/yakindu/patterns.vql
index 98a10cde..49fb5b2f 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/queries/hu/bme/mit/inf/dslreasoner/partialsnapshot_mavo/yakindu/patterns.vql
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.yakindu.sgraph/queries/hu/bme/mit/inf/dslreasoner/partialsnapshot_mavo/yakindu/patterns.vql
@@ -22,6 +22,12 @@ pattern multipleEntryInRegion(r : Region) {
         e1 != e2;

 }

 

+@Constraint(severity="error", message="error", key = {sct})

+pattern unsat_multipleEntryInRegion(sct : Statechart) {

+        Statechart(sct);

+        neg find multipleEntryInRegion(_);

+}

+

 pattern transition(t : Transition, src : Vertex, trg : Vertex) {

         Transition.source(t, src);

         Transition.target(t, trg);

@@ -197,6 +203,11 @@ pattern SynchronizedRegionDoesNotHaveMultipleRegions(s : Synchronization, v : Ve
         neg find hasMultipleRegions(c);

 }

 

+//@Constraint(severity="error", message="error", key = {sct})

+//pattern unsat_SynchronizedRegionDoesNotHaveMultipleRegions(sct : Statechart) {

+//      Statechart(sct);

+//      neg find SynchronizedRegionDoesNotHaveMultipleRegions(_, _);

+//}

 

 pattern hasMultipleRegions(composite: CompositeElement) {

         CompositeElement.regions(composite,region1);