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diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src-gen/hu/bme/mit/inf/dslreasoner/domains/cps/queries/Allocate.java b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src-gen/hu/bme/mit/inf/dslreasoner/domains/cps/queries/Allocate.java
new file mode 100644
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--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src-gen/hu/bme/mit/inf/dslreasoner/domains/cps/queries/Allocate.java
@@ -0,0 +1,873 @@
+/**
+ * Generated from platform:/resource/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql
+ */
+package hu.bme.mit.inf.dslreasoner.domains.cps.queries;
+import hu.bme.mit.inf.dslreasoner.domains.cps.ApplicationInstance;
+import hu.bme.mit.inf.dslreasoner.domains.cps.HostInstance;
+import hu.bme.mit.inf.dslreasoner.domains.cps.queries.internal.AvailableHdd;
+import hu.bme.mit.inf.dslreasoner.domains.cps.queries.internal.AvailableMemory;
+import hu.bme.mit.inf.dslreasoner.domains.cps.queries.internal.UnallocatedAppInstance;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+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.EDataType;
+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.EDataTypeInSlotsKey;
+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.IExpressionEvaluator;
+import org.eclipse.viatra.query.runtime.matchers.psystem.IValueProvider;
+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.basicdeferred.ExpressionEvaluation;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.NegativePatternCall;
+import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.PositivePatternCall;
+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>
+ *         //
+ *         // Transformation rule preconditions for rule-based DSE
+ *         //
+ *         
+ *         pattern allocate(App : ApplicationInstance, Host : HostInstance) {
+ *              ApplicationInstance.type.requirements(App, Req);
+ *              ResourceRequirement.hostType.instances(Req, Host);
+ *              find unallocatedAppInstance(App);
+ *              find availableMemory(Host, AvailableMem);
+ *              find availableHdd(Host, AvailableHdd);
+ *              ResourceRequirement.requiredMemory(Req, RequiredMem);
+ *              ResourceRequirement.requiredHdd(Req, RequiredHdd);
+ *              check(AvailableMem {@literal >}= RequiredMem);
+ *              check(AvailableHdd {@literal >}= RequiredHdd);
+ *              neg ApplicationInstance.requirement.instances.allocatedTo(App, Host);
+ *         }
+ * </pre></code>
+ * 
+ * @see Matcher
+ * @see Match
+ * 
+ */
+@SuppressWarnings("all")
+public final class Allocate extends BaseGeneratedEMFQuerySpecification<Allocate.Matcher> {
+  /**
+   * Pattern-specific match representation of the hu.bme.mit.inf.dslreasoner.domains.cps.queries.allocate 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 ApplicationInstance fApp;
+    
+    private HostInstance fHost;
+    
+    private static List<String> parameterNames = makeImmutableList("App", "Host");
+    
+    private Match(final ApplicationInstance pApp, final HostInstance pHost) {
+      this.fApp = pApp;
+      this.fHost = pHost;
+    }
+    
+    @Override
+    public Object get(final String parameterName) {
+      switch(parameterName) {
+          case "App": return this.fApp;
+          case "Host": return this.fHost;
+          default: return null;
+      }
+    }
+    
+    @Override
+    public Object get(final int index) {
+      switch(index) {
+          case 0: return this.fApp;
+          case 1: return this.fHost;
+          default: return null;
+      }
+    }
+    
+    public ApplicationInstance getApp() {
+      return this.fApp;
+    }
+    
+    public HostInstance getHost() {
+      return this.fHost;
+    }
+    
+    @Override
+    public boolean set(final String parameterName, final Object newValue) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      if ("App".equals(parameterName) ) {
+          this.fApp = (ApplicationInstance) newValue;
+          return true;
+      }
+      if ("Host".equals(parameterName) ) {
+          this.fHost = (HostInstance) newValue;
+          return true;
+      }
+      return false;
+    }
+    
+    public void setApp(final ApplicationInstance pApp) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      this.fApp = pApp;
+    }
+    
+    public void setHost(final HostInstance pHost) {
+      if (!isMutable()) throw new java.lang.UnsupportedOperationException();
+      this.fHost = pHost;
+    }
+    
+    @Override
+    public String patternName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.cps.queries.allocate";
+    }
+    
+    @Override
+    public List<String> parameterNames() {
+      return Allocate.Match.parameterNames;
+    }
+    
+    @Override
+    public Object[] toArray() {
+      return new Object[]{fApp, fHost};
+    }
+    
+    @Override
+    public Allocate.Match toImmutable() {
+      return isMutable() ? newMatch(fApp, fHost) : this;
+    }
+    
+    @Override
+    public String prettyPrint() {
+      StringBuilder result = new StringBuilder();
+      result.append("\"App\"=" + prettyPrintValue(fApp) + ", ");
+      result.append("\"Host\"=" + prettyPrintValue(fHost));
+      return result.toString();
+    }
+    
+    @Override
+    public int hashCode() {
+      return Objects.hash(fApp, fHost);
+    }
+    
+    @Override
+    public boolean equals(final Object obj) {
+      if (this == obj)
+          return true;
+      if (obj == null) {
+          return false;
+      }
+      if ((obj instanceof Allocate.Match)) {
+          Allocate.Match other = (Allocate.Match) obj;
+          return Objects.equals(fApp, other.fApp) && Objects.equals(fHost, other.fHost);
+      } 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 Allocate specification() {
+      return Allocate.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 Allocate.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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return the new, mutable (partial) match object.
+     * 
+     */
+    public static Allocate.Match newMutableMatch(final ApplicationInstance pApp, final HostInstance pHost) {
+      return new Mutable(pApp, pHost);
+    }
+    
+    /**
+     * 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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public static Allocate.Match newMatch(final ApplicationInstance pApp, final HostInstance pHost) {
+      return new Immutable(pApp, pHost);
+    }
+    
+    private static final class Mutable extends Allocate.Match {
+      Mutable(final ApplicationInstance pApp, final HostInstance pHost) {
+        super(pApp, pHost);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return true;
+      }
+    }
+    
+    private static final class Immutable extends Allocate.Match {
+      Immutable(final ApplicationInstance pApp, final HostInstance pHost) {
+        super(pApp, pHost);
+      }
+      
+      @Override
+      public boolean isMutable() {
+        return false;
+      }
+    }
+  }
+  
+  /**
+   * Generated pattern matcher API of the hu.bme.mit.inf.dslreasoner.domains.cps.queries.allocate 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>
+   * //
+   * // Transformation rule preconditions for rule-based DSE
+   * //
+   * 
+   * pattern allocate(App : ApplicationInstance, Host : HostInstance) {
+   *    ApplicationInstance.type.requirements(App, Req);
+   *    ResourceRequirement.hostType.instances(Req, Host);
+   *    find unallocatedAppInstance(App);
+   *    find availableMemory(Host, AvailableMem);
+   *    find availableHdd(Host, AvailableHdd);
+   *    ResourceRequirement.requiredMemory(Req, RequiredMem);
+   *    ResourceRequirement.requiredHdd(Req, RequiredHdd);
+   *    check(AvailableMem {@literal >}= RequiredMem);
+   *    check(AvailableHdd {@literal >}= RequiredHdd);
+   *    neg ApplicationInstance.requirement.instances.allocatedTo(App, Host);
+   * }
+   * </pre></code>
+   * 
+   * @see Match
+   * @see Allocate
+   * 
+   */
+  public static class Matcher extends BaseMatcher<Allocate.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 Allocate.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 Allocate.Matcher create() {
+      return new Matcher();
+    }
+    
+    private static final int POSITION_APP = 0;
+    
+    private static final int POSITION_HOST = 1;
+    
+    private static final Logger LOGGER = ViatraQueryLoggingUtil.getLogger(Allocate.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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return matches represented as a Match object.
+     * 
+     */
+    public Collection<Allocate.Match> getAllMatches(final ApplicationInstance pApp, final HostInstance pHost) {
+      return rawStreamAllMatches(new Object[]{pApp, pHost}).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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return a stream of matches represented as a Match object.
+     * 
+     */
+    public Stream<Allocate.Match> streamAllMatches(final ApplicationInstance pApp, final HostInstance pHost) {
+      return rawStreamAllMatches(new Object[]{pApp, pHost});
+    }
+    
+    /**
+     * 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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return a match represented as a Match object, or null if no match is found.
+     * 
+     */
+    public Optional<Allocate.Match> getOneArbitraryMatch(final ApplicationInstance pApp, final HostInstance pHost) {
+      return rawGetOneArbitraryMatch(new Object[]{pApp, pHost});
+    }
+    
+    /**
+     * 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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return true if the input is a valid (partial) match of the pattern.
+     * 
+     */
+    public boolean hasMatch(final ApplicationInstance pApp, final HostInstance pHost) {
+      return rawHasMatch(new Object[]{pApp, pHost});
+    }
+    
+    /**
+     * Returns the number of all matches of the pattern that conform to the given fixed values of some parameters.
+     * @param pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return the number of pattern matches found.
+     * 
+     */
+    public int countMatches(final ApplicationInstance pApp, final HostInstance pHost) {
+      return rawCountMatches(new Object[]{pApp, pHost});
+    }
+    
+    /**
+     * 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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, 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 ApplicationInstance pApp, final HostInstance pHost, final Consumer<? super Allocate.Match> processor) {
+      return rawForOneArbitraryMatch(new Object[]{pApp, pHost}, 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 pApp the fixed value of pattern parameter App, or null if not bound.
+     * @param pHost the fixed value of pattern parameter Host, or null if not bound.
+     * @return the (partial) match object.
+     * 
+     */
+    public Allocate.Match newMatch(final ApplicationInstance pApp, final HostInstance pHost) {
+      return Allocate.Match.newMatch(pApp, pHost);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    protected Stream<ApplicationInstance> rawStreamAllValuesOfApp(final Object[] parameters) {
+      return rawStreamAllValues(POSITION_APP, parameters).map(ApplicationInstance.class::cast);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<ApplicationInstance> getAllValuesOfApp() {
+      return rawStreamAllValuesOfApp(emptyArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<ApplicationInstance> streamAllValuesOfApp() {
+      return rawStreamAllValuesOfApp(emptyArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * </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<ApplicationInstance> streamAllValuesOfApp(final Allocate.Match partialMatch) {
+      return rawStreamAllValuesOfApp(partialMatch.toArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * </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<ApplicationInstance> streamAllValuesOfApp(final HostInstance pHost) {
+      return rawStreamAllValuesOfApp(new Object[]{null, pHost});
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<ApplicationInstance> getAllValuesOfApp(final Allocate.Match partialMatch) {
+      return rawStreamAllValuesOfApp(partialMatch.toArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for App.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<ApplicationInstance> getAllValuesOfApp(final HostInstance pHost) {
+      return rawStreamAllValuesOfApp(new Object[]{null, pHost}).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    protected Stream<HostInstance> rawStreamAllValuesOfHost(final Object[] parameters) {
+      return rawStreamAllValues(POSITION_HOST, parameters).map(HostInstance.class::cast);
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<HostInstance> getAllValuesOfHost() {
+      return rawStreamAllValuesOfHost(emptyArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Stream<HostInstance> streamAllValuesOfHost() {
+      return rawStreamAllValuesOfHost(emptyArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * </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<HostInstance> streamAllValuesOfHost(final Allocate.Match partialMatch) {
+      return rawStreamAllValuesOfHost(partialMatch.toArray());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * </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<HostInstance> streamAllValuesOfHost(final ApplicationInstance pApp) {
+      return rawStreamAllValuesOfHost(new Object[]{pApp, null});
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<HostInstance> getAllValuesOfHost(final Allocate.Match partialMatch) {
+      return rawStreamAllValuesOfHost(partialMatch.toArray()).collect(Collectors.toSet());
+    }
+    
+    /**
+     * Retrieve the set of values that occur in matches for Host.
+     * @return the Set of all values or empty set if there are no matches
+     * 
+     */
+    public Set<HostInstance> getAllValuesOfHost(final ApplicationInstance pApp) {
+      return rawStreamAllValuesOfHost(new Object[]{pApp, null}).collect(Collectors.toSet());
+    }
+    
+    @Override
+    protected Allocate.Match tupleToMatch(final Tuple t) {
+      try {
+          return Allocate.Match.newMatch((ApplicationInstance) t.get(POSITION_APP), (HostInstance) t.get(POSITION_HOST));
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in tuple not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Allocate.Match arrayToMatch(final Object[] match) {
+      try {
+          return Allocate.Match.newMatch((ApplicationInstance) match[POSITION_APP], (HostInstance) match[POSITION_HOST]);
+      } catch(ClassCastException e) {
+          LOGGER.error("Element(s) in array not properly typed!",e);
+          return null;
+      }
+    }
+    
+    @Override
+    protected Allocate.Match arrayToMatchMutable(final Object[] match) {
+      try {
+          return Allocate.Match.newMutableMatch((ApplicationInstance) match[POSITION_APP], (HostInstance) match[POSITION_HOST]);
+      } 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<Allocate.Matcher> querySpecification() {
+      return Allocate.instance();
+    }
+  }
+  
+  private Allocate() {
+    super(GeneratedPQuery.INSTANCE);
+  }
+  
+  /**
+   * @return the singleton instance of the query specification
+   * @throws ViatraQueryRuntimeException if the pattern definition could not be loaded
+   * 
+   */
+  public static Allocate instance() {
+    try{
+        return LazyHolder.INSTANCE;
+    } catch (ExceptionInInitializerError err) {
+        throw processInitializerError(err);
+    }
+  }
+  
+  @Override
+  protected Allocate.Matcher instantiate(final ViatraQueryEngine engine) {
+    return Allocate.Matcher.on(engine);
+  }
+  
+  @Override
+  public Allocate.Matcher instantiate() {
+    return Allocate.Matcher.create();
+  }
+  
+  @Override
+  public Allocate.Match newEmptyMatch() {
+    return Allocate.Match.newEmptyMatch();
+  }
+  
+  @Override
+  public Allocate.Match newMatch(final Object... parameters) {
+    return Allocate.Match.newMatch((hu.bme.mit.inf.dslreasoner.domains.cps.ApplicationInstance) parameters[0], (hu.bme.mit.inf.dslreasoner.domains.cps.HostInstance) parameters[1]);
+  }
+  
+  /**
+   * Inner class allowing the singleton instance of {@link Allocate} to be created 
+   *     <b>not</b> at the class load time of the outer class, 
+   *     but rather at the first call to {@link Allocate#instance()}.
+   * 
+   * <p> This workaround is required e.g. to support recursion.
+   * 
+   */
+  private static class LazyHolder {
+    private static final Allocate INSTANCE = new Allocate();
+    
+    /**
+     * 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 Allocate.GeneratedPQuery INSTANCE = new GeneratedPQuery();
+    
+    private final PParameter parameter_App = new PParameter("App", "hu.bme.mit.inf.dslreasoner.domains.cps.ApplicationInstance", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.example.org/cps", "ApplicationInstance")), PParameterDirection.INOUT);
+    
+    private final PParameter parameter_Host = new PParameter("Host", "hu.bme.mit.inf.dslreasoner.domains.cps.HostInstance", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.example.org/cps", "HostInstance")), PParameterDirection.INOUT);
+    
+    private final List<PParameter> parameters = Arrays.asList(parameter_App, parameter_Host);
+    
+    private class Embedded_1_ApplicationInstance_requirement_instances_allocatedTo extends BaseGeneratedEMFPQuery {
+      private final PParameter parameter_p0 = new PParameter("p0", "hu.bme.mit.inf.dslreasoner.domains.cps.ApplicationInstance", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.example.org/cps", "ApplicationInstance")), PParameterDirection.INOUT);
+      
+      private final PParameter parameter_p1 = new PParameter("p1", "hu.bme.mit.inf.dslreasoner.domains.cps.HostInstance", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.example.org/cps", "HostInstance")), PParameterDirection.INOUT);
+      
+      private final List<PParameter> embeddedParameters = Arrays.asList(parameter_p0, parameter_p1);
+      
+      public Embedded_1_ApplicationInstance_requirement_instances_allocatedTo() {
+        super(PVisibility.EMBEDDED);
+      }
+      
+      @Override
+      public String getFullyQualifiedName() {
+        return GeneratedPQuery.this.getFullyQualifiedName() + "$Embedded_1_ApplicationInstance_requirement_instances_allocatedTo";
+      }
+      
+      @Override
+      public List<PParameter> getParameters() {
+        return embeddedParameters;
+      }
+      
+      @Override
+      public Set<PBody> doGetContainedBodies() {
+        PBody body = new PBody(this);
+        PVariable var_p0 = body.getOrCreateVariableByName("p0");
+        PVariable var_p1 = body.getOrCreateVariableByName("p1");
+        body.setSymbolicParameters(Arrays.<ExportedParameter>asList(
+           new ExportedParameter(body, var_p0, parameter_p0),
+           new ExportedParameter(body, var_p1, parameter_p1)
+        ));
+        //  ApplicationInstance.requirement.instances.allocatedTo(App, Host)
+        new TypeConstraint(body, Tuples.flatTupleOf(var_p0), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ApplicationInstance")));
+        PVariable var__virtual_0_ = body.getOrCreateVariableByName(".virtual{0}");
+        new TypeConstraint(body, Tuples.flatTupleOf(var_p0, var__virtual_0_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ApplicationInstance", "requirement")));
+        new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_0_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "Requirement")));
+        PVariable var__virtual_1_ = body.getOrCreateVariableByName(".virtual{1}");
+        new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_0_, var__virtual_1_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "Requirement", "instances")));
+        new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_1_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ApplicationInstance")));
+        PVariable var__virtual_2_ = body.getOrCreateVariableByName(".virtual{2}");
+        new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_1_, var__virtual_2_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ApplicationInstance", "allocatedTo")));
+        new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_2_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "HostInstance")));
+        new Equality(body, var__virtual_2_, var_p1);
+        return Collections.singleton(body);
+      }
+    }
+    
+    private GeneratedPQuery() {
+      super(PVisibility.PUBLIC);
+    }
+    
+    @Override
+    public String getFullyQualifiedName() {
+      return "hu.bme.mit.inf.dslreasoner.domains.cps.queries.allocate";
+    }
+    
+    @Override
+    public List<String> getParameterNames() {
+      return Arrays.asList("App","Host");
+    }
+    
+    @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_App = body.getOrCreateVariableByName("App");
+          PVariable var_Host = body.getOrCreateVariableByName("Host");
+          PVariable var_Req = body.getOrCreateVariableByName("Req");
+          PVariable var_AvailableMem = body.getOrCreateVariableByName("AvailableMem");
+          PVariable var_AvailableHdd = body.getOrCreateVariableByName("AvailableHdd");
+          PVariable var_RequiredMem = body.getOrCreateVariableByName("RequiredMem");
+          PVariable var_RequiredHdd = body.getOrCreateVariableByName("RequiredHdd");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_App), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ApplicationInstance")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Host), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "HostInstance")));
+          body.setSymbolicParameters(Arrays.<ExportedParameter>asList(
+             new ExportedParameter(body, var_App, parameter_App),
+             new ExportedParameter(body, var_Host, parameter_Host)
+          ));
+          //    ApplicationInstance.type.requirements(App, Req)
+          new TypeConstraint(body, Tuples.flatTupleOf(var_App), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ApplicationInstance")));
+          PVariable var__virtual_0_ = body.getOrCreateVariableByName(".virtual{0}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_App, var__virtual_0_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ApplicationInstance", "type")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_0_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ApplicationType")));
+          PVariable var__virtual_1_ = body.getOrCreateVariableByName(".virtual{1}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_0_, var__virtual_1_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ApplicationType", "requirements")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_1_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ResourceRequirement")));
+          new Equality(body, var__virtual_1_, var_Req);
+          //    ResourceRequirement.hostType.instances(Req, Host)
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ResourceRequirement")));
+          PVariable var__virtual_2_ = body.getOrCreateVariableByName(".virtual{2}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req, var__virtual_2_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ResourceRequirement", "hostType")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_2_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "HostType")));
+          PVariable var__virtual_3_ = body.getOrCreateVariableByName(".virtual{3}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_2_, var__virtual_3_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "HostType", "instances")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_3_), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "HostInstance")));
+          new Equality(body, var__virtual_3_, var_Host);
+          //    find unallocatedAppInstance(App)
+          new PositivePatternCall(body, Tuples.flatTupleOf(var_App), UnallocatedAppInstance.instance().getInternalQueryRepresentation());
+          //    find availableMemory(Host, AvailableMem)
+          new PositivePatternCall(body, Tuples.flatTupleOf(var_Host, var_AvailableMem), AvailableMemory.instance().getInternalQueryRepresentation());
+          //    find availableHdd(Host, AvailableHdd)
+          new PositivePatternCall(body, Tuples.flatTupleOf(var_Host, var_AvailableHdd), AvailableHdd.instance().getInternalQueryRepresentation());
+          //    ResourceRequirement.requiredMemory(Req, RequiredMem)
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ResourceRequirement")));
+          PVariable var__virtual_4_ = body.getOrCreateVariableByName(".virtual{4}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req, var__virtual_4_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ResourceRequirement", "requiredMemory")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_4_), new EDataTypeInSlotsKey((EDataType)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EInt")));
+          new Equality(body, var__virtual_4_, var_RequiredMem);
+          //    ResourceRequirement.requiredHdd(Req, RequiredHdd)
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.example.org/cps", "ResourceRequirement")));
+          PVariable var__virtual_5_ = body.getOrCreateVariableByName(".virtual{5}");
+          new TypeConstraint(body, Tuples.flatTupleOf(var_Req, var__virtual_5_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.example.org/cps", "ResourceRequirement", "requiredHdd")));
+          new TypeConstraint(body, Tuples.flatTupleOf(var__virtual_5_), new EDataTypeInSlotsKey((EDataType)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EInt")));
+          new Equality(body, var__virtual_5_, var_RequiredHdd);
+          //    check(AvailableMem >= RequiredMem)
+          new ExpressionEvaluation(body, new IExpressionEvaluator() {
+          
+              @Override
+              public String getShortDescription() {
+                  return "Expression evaluation from pattern allocate";
+              }
+              
+              @Override
+              public Iterable<String> getInputParameterNames() {
+                  return Arrays.asList("AvailableMem", "RequiredMem");}
+          
+              @Override
+              public Object evaluateExpression(IValueProvider provider) throws Exception {
+                  Integer AvailableMem = (Integer) provider.getValue("AvailableMem");
+                  Integer RequiredMem = (Integer) provider.getValue("RequiredMem");
+                  return evaluateExpression_1_1(AvailableMem, RequiredMem);
+              }
+          },  null); 
+          //    check(AvailableHdd >= RequiredHdd)
+          new ExpressionEvaluation(body, new IExpressionEvaluator() {
+          
+              @Override
+              public String getShortDescription() {
+                  return "Expression evaluation from pattern allocate";
+              }
+              
+              @Override
+              public Iterable<String> getInputParameterNames() {
+                  return Arrays.asList("AvailableHdd", "RequiredHdd");}
+          
+              @Override
+              public Object evaluateExpression(IValueProvider provider) throws Exception {
+                  Integer AvailableHdd = (Integer) provider.getValue("AvailableHdd");
+                  Integer RequiredHdd = (Integer) provider.getValue("RequiredHdd");
+                  return evaluateExpression_1_2(AvailableHdd, RequiredHdd);
+              }
+          },  null); 
+          //    neg ApplicationInstance.requirement.instances.allocatedTo(App, Host)
+          new NegativePatternCall(body, Tuples.flatTupleOf(var_App, var_Host), new Allocate.GeneratedPQuery.Embedded_1_ApplicationInstance_requirement_instances_allocatedTo());
+          bodies.add(body);
+      }
+      return bodies;
+    }
+  }
+  
+  private static boolean evaluateExpression_1_1(final Integer AvailableMem, final Integer RequiredMem) {
+    boolean _greaterEqualsThan = (AvailableMem.compareTo(RequiredMem) >= 0);
+    return _greaterEqualsThan;
+  }
+  
+  private static boolean evaluateExpression_1_2(final Integer AvailableHdd, final Integer RequiredHdd) {
+    boolean _greaterEqualsThan = (AvailableHdd.compareTo(RequiredHdd) >= 0);
+    return _greaterEqualsThan;
+  }
+}