diff --git a/.mps/modules.xml b/.mps/modules.xml
index e7081ffb..1857ed3b 100644
--- a/.mps/modules.xml
+++ b/.mps/modules.xml
@@ -23,12 +23,8 @@
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.logic/sandbox/runner/jetbrains.mps.logic.sandbox.runner.msd" folder="logic" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.logic/test/jetbrains.mps.logic.test.msd" folder="logic" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.typechecking.annotation/jetbrains.mps.typechecking.annotation.mpl" folder="typechecking" />
-      <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.type.sandbox.runner/jetbrains.mps.type.sandbox.runner.msd" folder="_obsolete.typechecking.types" />
-      <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.type.sandbox/jetbrains.mps.type.sandbox.msd" folder="_obsolete.typechecking.types" />
-      <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.type.solver/jetbrains.mps.type.solver.msd" folder="_obsolete.typechecking.types" />
       <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.typechecking.handling/jetbrains.mps.typechecking.handling.msd" folder="typechecking.rule" />
       <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.typechecking.rules/jetbrains.mps.typechecking.rules.msd" folder="typechecking.rule" />
-      <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.typechecking.solving/jetbrains.mps.typechecking.solving.msd" folder="_obsolete" />
       <modulePath path="$PROJECT_DIR$/solutions/jetbrains.mps.unification.tree/jetbrains.mps.unification.tree.msd" folder="logic" />
     </projectModules>
   </component>
diff --git a/solutions/jetbrains.mps.type.sandbox.runner/jetbrains.mps.type.sandbox.runner.msd b/solutions/jetbrains.mps.type.sandbox.runner/jetbrains.mps.type.sandbox.runner.msd
deleted file mode 100644
index 8f2c70fa..00000000
--- a/solutions/jetbrains.mps.type.sandbox.runner/jetbrains.mps.type.sandbox.runner.msd
+++ /dev/null
@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<solution name="jetbrains.mps.type.sandbox.runner" uuid="41f6c457-a81a-4529-ac80-d242b1dd669a" compileInMPS="true">
-  <models>
-    <modelRoot contentPath="${module}" type="default">
-      <sourceRoot location="models" />
-    </modelRoot>
-  </models>
-  <sourcePath />
-  <dependencies>
-    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
-    <dependency reexport="false">a5478664-6b44-4c62-a9f7-434f8aa57eee(jetbrains.mps.logic.runtime)</dependency>
-    <dependency reexport="false">eaa96e7c-030a-4e4f-8ae7-a24dff1e0572(jetbrains.mps.logic.sandbox)</dependency>
-    <dependency reexport="false">16aea8bc-02ec-4d2e-9965-44a8d4b5d4b2(jetbrains.mps.type.sandbox)</dependency>
-    <dependency reexport="false">2b54fd24-63fa-4af4-8776-244484d34b48(jetbrains.mps.type.solver)</dependency>
-    <dependency reexport="false">a3529a8c-f4ff-4125-865c-391bcc490358(jetbrains.mps.typechecking.solving)</dependency>
-    <dependency reexport="false">7526e0cf-1ce7-46f8-a555-9eca1e06c23b(jetbrains.mps.unification.tree)</dependency>
-  </dependencies>
-  <usedLanguages>
-    <usedLanguage>894463aa-8754-49c0-bf4b-6a32af66b376(jetbrains.mps.jchr)</usedLanguage>
-    <usedLanguage>35320f26-77cb-4c55-be9f-a97a27770af1(jetbrains.mps.logic)</usedLanguage>
-  </usedLanguages>
-  <usedDevKits>
-    <usedDevKit>fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)</usedDevKit>
-  </usedDevKits>
-  <languageVersions>
-    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" fqName="jetbrains.mps.baseLanguage" version="1" />
-    <language id="ed6d7656-532c-4bc2-81d1-af945aeb8280" fqName="jetbrains.mps.baseLanguage.blTypes" version="0" />
-    <language id="fd392034-7849-419d-9071-12563d152375" fqName="jetbrains.mps.baseLanguage.closures" version="0" />
-    <language id="83888646-71ce-4f1c-9c53-c54016f6ad4f" fqName="jetbrains.mps.baseLanguage.collections" version="0" />
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-    <language id="760a0a8c-eabb-4521-8bfd-65db761a9ba3" fqName="jetbrains.mps.baseLanguage.logging" version="0" />
-    <language id="a247e09e-2435-45ba-b8d2-07e93feba96a" fqName="jetbrains.mps.baseLanguage.tuples" version="0" />
-    <language id="894463aa-8754-49c0-bf4b-6a32af66b376" fqName="jetbrains.mps.jchr" version="0" />
-    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" fqName="jetbrains.mps.lang.core" version="1" />
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-    <language id="35320f26-77cb-4c55-be9f-a97a27770af1" fqName="jetbrains.mps.logic" version="0" />
-  </languageVersions>
-</solution>
-
diff --git a/solutions/jetbrains.mps.type.sandbox.runner/models/jetbrains/mps/type/sandbox/runner.mps b/solutions/jetbrains.mps.type.sandbox.runner/models/jetbrains/mps/type/sandbox/runner.mps
deleted file mode 100644
index 5f70e3ea..00000000
--- a/solutions/jetbrains.mps.type.sandbox.runner/models/jetbrains/mps/type/sandbox/runner.mps
+++ /dev/null
@@ -1,1746 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model ref="r:e3c1c197-f59d-47c0-ab62-e02983e04056(jetbrains.mps.type.sandbox.runner)">
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-    <import index="qfgq" ref="r:12056882-be6e-41ea-97f1-d0d00393a672(jetbrains.mps.type.sandbox)" />
-    <import index="k7g3" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.util(JDK/java.util@java_stub)" />
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-    <import index="mqgp" ref="r:df98e090-e1cf-4263-9336-dc1ffd952995(jetbrains.mps.typechecking.builtin.conversion)" />
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diff --git a/solutions/jetbrains.mps.type.sandbox/jetbrains.mps.type.sandbox.msd b/solutions/jetbrains.mps.type.sandbox/jetbrains.mps.type.sandbox.msd
deleted file mode 100644
index 2a7974a0..00000000
--- a/solutions/jetbrains.mps.type.sandbox/jetbrains.mps.type.sandbox.msd
+++ /dev/null
@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<solution name="jetbrains.mps.type.sandbox" uuid="16aea8bc-02ec-4d2e-9965-44a8d4b5d4b2" compileInMPS="true">
-  <models>
-    <modelRoot contentPath="${module}" type="default">
-      <sourceRoot location="models" />
-    </modelRoot>
-  </models>
-  <stubModelEntries>
-    <stubModelEntry path="${module}/classes_jchr" />
-  </stubModelEntries>
-  <sourcePath />
-  <dependencies>
-    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
-    <dependency reexport="false">a5478664-6b44-4c62-a9f7-434f8aa57eee(jetbrains.mps.logic.runtime)</dependency>
-    <dependency reexport="false">2b54fd24-63fa-4af4-8776-244484d34b48(jetbrains.mps.type.solver)</dependency>
-    <dependency reexport="false">a3529a8c-f4ff-4125-865c-391bcc490358(jetbrains.mps.typechecking.solving)</dependency>
-    <dependency reexport="false">7526e0cf-1ce7-46f8-a555-9eca1e06c23b(jetbrains.mps.unification.tree)</dependency>
-  </dependencies>
-  <usedLanguages>
-    <usedLanguage>f2801650-65d5-424e-bb1b-463a8781b786(jetbrains.mps.baseLanguage.javadoc)</usedLanguage>
-    <usedLanguage>894463aa-8754-49c0-bf4b-6a32af66b376(jetbrains.mps.jchr)</usedLanguage>
-    <usedLanguage>35320f26-77cb-4c55-be9f-a97a27770af1(jetbrains.mps.logic)</usedLanguage>
-  </usedLanguages>
-  <usedDevKits>
-    <usedDevKit>fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)</usedDevKit>
-  </usedDevKits>
-  <languageVersions>
-    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" fqName="jetbrains.mps.baseLanguage" version="1" />
-    <language id="ed6d7656-532c-4bc2-81d1-af945aeb8280" fqName="jetbrains.mps.baseLanguage.blTypes" version="0" />
-    <language id="fd392034-7849-419d-9071-12563d152375" fqName="jetbrains.mps.baseLanguage.closures" version="0" />
-    <language id="83888646-71ce-4f1c-9c53-c54016f6ad4f" fqName="jetbrains.mps.baseLanguage.collections" version="0" />
-    <language id="f2801650-65d5-424e-bb1b-463a8781b786" fqName="jetbrains.mps.baseLanguage.javadoc" version="1" />
-    <language id="760a0a8c-eabb-4521-8bfd-65db761a9ba3" fqName="jetbrains.mps.baseLanguage.logging" version="0" />
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-    <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" fqName="jetbrains.mps.lang.quotation" version="0" />
-    <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" fqName="jetbrains.mps.lang.smodel" version="0" />
-    <language id="9ded098b-ad6a-4657-bfd9-48636cfe8bc3" fqName="jetbrains.mps.lang.traceable" version="0" />
-    <language id="35320f26-77cb-4c55-be9f-a97a27770af1" fqName="jetbrains.mps.logic" version="0" />
-  </languageVersions>
-</solution>
-
diff --git a/solutions/jetbrains.mps.type.sandbox/models/jetbrains/mps/type/sandbox.mps b/solutions/jetbrains.mps.type.sandbox/models/jetbrains/mps/type/sandbox.mps
deleted file mode 100644
index c79b2fb1..00000000
--- a/solutions/jetbrains.mps.type.sandbox/models/jetbrains/mps/type/sandbox.mps
+++ /dev/null
@@ -1,6755 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model ref="r:12056882-be6e-41ea-97f1-d0d00393a672(jetbrains.mps.type.sandbox)">
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-    <use id="f2801650-65d5-424e-bb1b-463a8781b786" name="jetbrains.mps.baseLanguage.javadoc" version="1" />
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-    <import index="c87j" ref="r:db5d11a3-3c62-4a1b-ace3-b983df6a66b4(jetbrains.mps.type.inference.common)" />
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-    <import index="w2rx" ref="f:java_stub#b984ee52-f34d-4b6d-8812-866c1d3eae31#runtime(jetbrains.mps.jchr.runtime/runtime@java_stub)" />
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diff --git a/solutions/jetbrains.mps.type.solver/jetbrains.mps.type.solver.msd b/solutions/jetbrains.mps.type.solver/jetbrains.mps.type.solver.msd
deleted file mode 100644
index cdc9d93b..00000000
--- a/solutions/jetbrains.mps.type.solver/jetbrains.mps.type.solver.msd
+++ /dev/null
@@ -1,39 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
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-    <dependency reexport="false">a3529a8c-f4ff-4125-865c-391bcc490358(jetbrains.mps.typechecking.solving)</dependency>
-    <dependency reexport="false">7526e0cf-1ce7-46f8-a555-9eca1e06c23b(jetbrains.mps.unification.tree)</dependency>
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-    <usedLanguage>35320f26-77cb-4c55-be9f-a97a27770af1(jetbrains.mps.logic)</usedLanguage>
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-    <language id="35320f26-77cb-4c55-be9f-a97a27770af1" fqName="jetbrains.mps.logic" version="0" />
-  </languageVersions>
-</solution>
-
diff --git a/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/baseLanguage.mps b/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/baseLanguage.mps
deleted file mode 100644
index fb9f957b..00000000
--- a/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/baseLanguage.mps
+++ /dev/null
@@ -1,831 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model ref="r:e67bd817-e7ca-40c9-9f79-95fad12bb615(jetbrains.mps.type.inference.baseLanguage)">
-  <persistence version="9" />
-  <languages>
-    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="-1" />
-    <use id="35320f26-77cb-4c55-be9f-a97a27770af1" name="jetbrains.mps.logic" version="-1" />
-    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
-  </languages>
-  <imports>
-    <import index="k7g3" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.util(JDK/java.util@java_stub)" />
-    <import index="ie8e" ref="r:ab2605ab-b4bc-4e80-a8ca-19a4a8465c01(jetbrains.mps.unification.tree)" />
-    <import index="jfki" ref="f:java_stub#7526e0cf-1ce7-46f8-a555-9eca1e06c23b#jetbrains.mps.unification(jetbrains.mps.unification@java_stub)" />
-    <import index="e2lb" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.lang(JDK/java.lang@java_stub)" />
-    <import index="fxg7" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.io(JDK/java.io@java_stub)" />
-  </imports>
-  <registry>
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-      <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
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-        <child id="1068498886295" name="lValue" index="37vLTJ" />
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-      </concept>
-      <concept id="1224848483129" name="jetbrains.mps.baseLanguage.structure.IBLDeprecatable" flags="ng" index="IEa8$">
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-      </concept>
-      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
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-      </concept>
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-      </concept>
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-      </concept>
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-      </concept>
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-      </concept>
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diff --git a/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/common.mps b/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/common.mps
deleted file mode 100644
index 6bc0c0fb..00000000
--- a/solutions/jetbrains.mps.type.solver/models/jetbrains/mps/type/inference/common.mps
+++ /dev/null
@@ -1,3766 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
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-                  <ref role="3uigEE" node="2GO7tyJwhqC" resolve="DomainTranslationTable.Track" />
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-                </node>
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-              <node concept="3SKdUq" id="2GO7tyJzTyQ" role="3SKWNk">
-                <property role="3SKdUp" value="TODO : multiple mappings for the target domain?" />
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-            </node>
-            <node concept="3clFbJ" id="2GO7tyJtCGv" role="3cqZAp">
-              <node concept="3clFbS" id="2GO7tyJtCGy" role="3clFbx">
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-                  </node>
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-                        <node concept="37vLTw" id="2GO7tyJzJ6K" role="2Oq$k0">
-                          <ref role="3cqZAo" node="2GO7tyJtyk3" resolve="track" />
-                        </node>
-                        <node concept="2OwXpG" id="2GO7tyJzJ6L" role="2OqNvi">
-                          <ref role="2Oxat5" node="2GO7tyJwuh8" resolve="mapping" />
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="2GO7tyJzJ6M" role="2OqNvi">
-                        <ref role="37wK5l" node="2GO7tyJmvua" resolve="map" />
-                        <node concept="2OqwBi" id="2GO7tyJzJ6N" role="37wK5m">
-                          <node concept="37vLTw" id="2GO7tyJzJ6O" role="2Oq$k0">
-                            <ref role="3cqZAo" node="2GO7tyJtyk3" resolve="track" />
-                          </node>
-                          <node concept="2OwXpG" id="2GO7tyJzJ6P" role="2OqNvi">
-                            <ref role="2Oxat5" node="2GO7tyJySee" resolve="source" />
-                          </node>
-                        </node>
-                      </node>
-                    </node>
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-                </node>
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-                        <node concept="3N13vt" id="2GO7tyJzNLH" role="3cqZAp" />
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-                        <node concept="2OqwBi" id="2GO7tyJzN6P" role="3fr31v">
-                          <node concept="37vLTw" id="2GO7tyJzN5p" role="2Oq$k0">
-                            <ref role="3cqZAo" node="2GO7tyJxp22" resolve="map" />
-                          </node>
-                          <node concept="liA8E" id="2GO7tyJzNjf" role="2OqNvi">
-                            <ref role="37wK5l" node="2GO7tyJr5uU" resolve="matches" />
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-                              <ref role="3cqZAo" node="2GO7tyJzJ6H" resolve="nextSrc" />
-                            </node>
-                          </node>
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-                          <ref role="3cqZAo" node="2GO7tyJt5KQ" resolve="queue" />
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-                          <ref role="37wK5l" to="k7g3:~LinkedList.addLast(java.lang.Object):void" resolve="addLast" />
-                          <node concept="2ShNRf" id="2GO7tyJxqWG" role="37wK5m">
-                            <node concept="1pGfFk" id="2GO7tyJxqWH" role="2ShVmc">
-                              <ref role="37wK5l" node="2GO7tyJyPRQ" resolve="DomainTranslationTable.Track" />
-                              <node concept="37vLTw" id="2GO7tyJxrya" role="37wK5m">
-                                <ref role="3cqZAo" node="2GO7tyJtyk3" resolve="track" />
-                              </node>
-                              <node concept="37vLTw" id="2GO7tyJxqWJ" role="37wK5m">
-                                <ref role="3cqZAo" node="2GO7tyJxp22" resolve="map" />
-                              </node>
-                              <node concept="37vLTw" id="2GO7tyJzNXn" role="37wK5m">
-                                <ref role="3cqZAo" node="2GO7tyJzJ6H" resolve="nextSrc" />
-                              </node>
-                            </node>
-                          </node>
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-                    <node concept="10P_77" id="2GO7tyJrvZ3" role="3clF45" />
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-                            <ref role="1Pybhc" to="jfki:~Unification" resolve="Unification" />
-                            <ref role="37wK5l" to="jfki:~Unification.unify(Node,Node)" resolve="unify" />
-                            <node concept="2OqwBi" id="2GO7tyJrwpQ" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJrwpR" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJrvZ1" resolve="type" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJrwpS" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                            <node concept="2OqwBi" id="2GO7tyJrwpT" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJrwpY" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJrUyg" resolve="template" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJrwpU" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                          </node>
-                          <node concept="liA8E" id="2GO7tyJrx56" role="2OqNvi">
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-                          </node>
-                        </node>
-                      </node>
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-                        <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-                    <node concept="3clFbS" id="2GO7tyJpTVf" role="3clF47">
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-                        <node concept="3SKdUq" id="2GO7tyJq17_" role="3SKWNk">
-                          <property role="3SKdUp" value="TODO: enable to use variables for role" />
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-                        <node concept="3cpWsn" id="2GO7tyJpTVx" role="3cpWs9">
-                          <property role="TrG5h" value="subs" />
-                          <node concept="3uibUv" id="2GO7tyJpTVy" role="1tU5fm">
-                            <ref role="3uigEE" to="jfki:~Substitution" resolve="Substitution" />
-                          </node>
-                          <node concept="2YIFZM" id="2GO7tyJpTVz" role="33vP2m">
-                            <ref role="37wK5l" to="jfki:~Unification.unify(Node,Node)" resolve="unify" />
-                            <ref role="1Pybhc" to="jfki:~Unification" resolve="Unification" />
-                            <node concept="2OqwBi" id="2GO7tyJpTV$" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJpTV_" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJpTVd" resolve="type" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJpTVA" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                            <node concept="2OqwBi" id="2GO7tyJpTVB" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJpTVC" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJrUyg" resolve="template" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJpTVD" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="3clFbJ" id="2GO7tyJpTVE" role="3cqZAp">
-                        <node concept="3clFbS" id="2GO7tyJpTVF" role="3clFbx">
-                          <node concept="YS8fn" id="2GO7tyJpTVG" role="3cqZAp">
-                            <node concept="2ShNRf" id="2GO7tyJpTVH" role="YScLw">
-                              <node concept="1pGfFk" id="2GO7tyJpTVI" role="2ShVmc">
-                                <ref role="37wK5l" to="e2lb:~IllegalStateException.&lt;init&gt;()" resolve="IllegalStateException" />
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="3fqX7Q" id="2GO7tyJpTVJ" role="3clFbw">
-                          <node concept="2OqwBi" id="2GO7tyJpTVK" role="3fr31v">
-                            <node concept="37vLTw" id="2GO7tyJpTVL" role="2Oq$k0">
-                              <ref role="3cqZAo" node="2GO7tyJpTVx" resolve="subs" />
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-                            <node concept="liA8E" id="2GO7tyJpTVM" role="2OqNvi">
-                              <ref role="37wK5l" to="jfki:~Substitution.isSuccessful()" resolve="isSuccessful" />
-                            </node>
-                          </node>
-                        </node>
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-                      <node concept="3clFbH" id="2GO7tyJpTW4" role="3cqZAp" />
-                      <node concept="3clFbF" id="2GO7tyJq3ey" role="3cqZAp">
-                        <node concept="1oi1Uc" id="2GO7tyJq3ez" role="3clFbG">
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-                            <node concept="1oi5Wm" id="2GO7tyJq3eA" role="1ojpOf">
-                              <property role="TrG5h" value="concept" />
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-                                <property role="1oi5yK" value="BoundedType" />
-                              </node>
-                            </node>
-                            <node concept="1oi5ST" id="2GO7tyJq3eD" role="1ojpOf">
-                              <property role="TrG5h" value="bound" />
-                              <property role="1oi5Z2" value="multiple" />
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-                                <node concept="22Ky0T" id="677NV56vfNH" role="lGtFl">
-                                  <node concept="2OqwBi" id="2GO7tyJqzgK" role="22Ky0K">
-                                    <node concept="2OqwBi" id="2GO7tyJq3eF" role="2Oq$k0">
-                                      <node concept="37vLTw" id="2GO7tyJq7Vg" role="2Oq$k0">
-                                        <ref role="3cqZAo" node="2GO7tyJpTVd" resolve="type" />
-                                      </node>
-                                      <node concept="liA8E" id="2GO7tyJq3eH" role="2OqNvi">
-                                        <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                                      </node>
-                                    </node>
-                                    <node concept="liA8E" id="2GO7tyJqz$y" role="2OqNvi">
-                                      <ref role="37wK5l" to="ie8e:1bm7a6EXvNI" resolve="copyRecursively" />
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                              <node concept="1oi5UN" id="677NV56vfN4" role="1oi5TL">
-                                <node concept="22Ky0T" id="677NV56vfN5" role="lGtFl">
-                                  <node concept="2OqwBi" id="2GO7tyJqzJe" role="22Ky0K">
-                                    <node concept="2OqwBi" id="2GO7tyJq3eK" role="2Oq$k0">
-                                      <node concept="37vLTw" id="2GO7tyJq80B" role="2Oq$k0">
-                                        <ref role="3cqZAo" node="2GO7tyJpTVd" resolve="type" />
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-                                      <node concept="liA8E" id="2GO7tyJq3eM" role="2OqNvi">
-                                        <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                                      </node>
-                                    </node>
-                                    <node concept="liA8E" id="2GO7tyJq$pB" role="2OqNvi">
-                                      <ref role="37wK5l" to="ie8e:1bm7a6EXvNI" resolve="copyRecursively" />
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                            </node>
-                          </node>
-                        </node>
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-                    </node>
-                  </node>
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-                  <node concept="312cEg" id="2GO7tyJsqdZ" role="jymVt">
-                    <property role="IEkAT" value="false" />
-                    <property role="TrG5h" value="template" />
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-                      <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-                    <node concept="3Tm6S6" id="2GO7tyJsqe1" role="1B3o_S" />
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-                      <node concept="1oi5UN" id="2GO7tyJsqe3" role="1oi0x0">
-                        <node concept="1oi5Wm" id="2GO7tyJsqe5" role="1ojpOf">
-                          <property role="TrG5h" value="concept" />
-                          <node concept="1oi5XN" id="2GO7tyJsqe6" role="1oi5zu">
-                            <property role="1oi5yK" value="ClassifierType" />
-                          </node>
-                        </node>
-                        <node concept="1oi5Wm" id="2GO7tyJsqe8" role="1ojpOf">
-                          <property role="TrG5h" value="classifier" />
-                          <node concept="1oi5XN" id="2GO7tyJsuNH" role="1oi5zu">
-                            <property role="1oi5yK" value="Integer" />
-                          </node>
-                        </node>
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-                  <node concept="3Tm1VV" id="2GO7tyJsqeb" role="1B3o_S" />
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-                          <property role="Xl_RC" value="primitive" />
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-                    <property role="1EzhhJ" value="false" />
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-                      <property role="TrG5h" value="type" />
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-                        <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-                    <node concept="10P_77" id="2GO7tyJsqel" role="3clF45" />
-                    <node concept="3Tm1VV" id="2GO7tyJsqem" role="1B3o_S" />
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-                      <node concept="3clFbF" id="2GO7tyJsqeo" role="3cqZAp">
-                        <node concept="2OqwBi" id="2GO7tyJsqep" role="3clFbG">
-                          <node concept="2YIFZM" id="2GO7tyJsqeq" role="2Oq$k0">
-                            <ref role="1Pybhc" to="jfki:~Unification" resolve="Unification" />
-                            <ref role="37wK5l" to="jfki:~Unification.unify(Node,Node)" resolve="unify" />
-                            <node concept="2OqwBi" id="2GO7tyJsqer" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJsqes" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJsqej" resolve="type" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJsqet" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                            <node concept="2OqwBi" id="2GO7tyJsqeu" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJsqev" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJsqdZ" resolve="template" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJsqew" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                          </node>
-                          <node concept="liA8E" id="2GO7tyJsqex" role="2OqNvi">
-                            <ref role="37wK5l" to="jfki:~Substitution.isSuccessful()" resolve="isSuccessful" />
-                          </node>
-                        </node>
-                      </node>
-                    </node>
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-                    <property role="1EzhhJ" value="false" />
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-                      <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-                      <property role="TrG5h" value="type" />
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-                    <node concept="3clFbS" id="2GO7tyJsqeB" role="3clF47">
-                      <node concept="3cpWs8" id="2GO7tyJsqeE" role="3cqZAp">
-                        <node concept="3cpWsn" id="2GO7tyJsqeF" role="3cpWs9">
-                          <property role="TrG5h" value="subs" />
-                          <node concept="3uibUv" id="2GO7tyJsqeG" role="1tU5fm">
-                            <ref role="3uigEE" to="jfki:~Substitution" resolve="Substitution" />
-                          </node>
-                          <node concept="2YIFZM" id="2GO7tyJsqeH" role="33vP2m">
-                            <ref role="37wK5l" to="jfki:~Unification.unify(Node,Node)" resolve="unify" />
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-                            <node concept="2OqwBi" id="2GO7tyJsqeI" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJsqeJ" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJsqe_" resolve="type" />
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-                              <node concept="liA8E" id="2GO7tyJsqeK" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                            <node concept="2OqwBi" id="2GO7tyJsqeL" role="37wK5m">
-                              <node concept="37vLTw" id="2GO7tyJsqeM" role="2Oq$k0">
-                                <ref role="3cqZAo" node="2GO7tyJsqdZ" resolve="template" />
-                              </node>
-                              <node concept="liA8E" id="2GO7tyJsqeN" role="2OqNvi">
-                                <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                              </node>
-                            </node>
-                          </node>
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-                                <ref role="37wK5l" to="e2lb:~IllegalStateException.&lt;init&gt;()" resolve="IllegalStateException" />
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="3fqX7Q" id="2GO7tyJsqeT" role="3clFbw">
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-                              <ref role="3cqZAo" node="2GO7tyJsqeF" resolve="subs" />
-                            </node>
-                            <node concept="liA8E" id="2GO7tyJsqeW" role="2OqNvi">
-                              <ref role="37wK5l" to="jfki:~Substitution.isSuccessful()" resolve="isSuccessful" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="3clFbH" id="2GO7tyJsqeX" role="3cqZAp" />
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-                              <property role="TrG5h" value="concept" />
-                              <node concept="1oi5XN" id="2GO7tyJsvt1" role="1oi5zu">
-                                <property role="1oi5yK" value="IntegerType" />
-                              </node>
-                            </node>
-                          </node>
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-              <property role="Xl_RC" value="reference" />
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-            <node concept="2ShNRf" id="2GO7tyJswtb" role="37wK5m">
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diff --git a/solutions/jetbrains.mps.typechecking.solving/jetbrains.mps.typechecking.solving.msd b/solutions/jetbrains.mps.typechecking.solving/jetbrains.mps.typechecking.solving.msd
deleted file mode 100644
index 598d58b9..00000000
--- a/solutions/jetbrains.mps.typechecking.solving/jetbrains.mps.typechecking.solving.msd
+++ /dev/null
@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
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diff --git a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/containment.mps b/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/containment.mps
deleted file mode 100644
index bab231d3..00000000
--- a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/containment.mps
+++ /dev/null
@@ -1,2872 +0,0 @@
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-                        <node concept="10QFUN" id="3HJTsBmU6LS" role="1eOMHV">
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-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmU6LU" role="10QFUP">
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-                              <ref role="3cqZAo" node="7d$oK1$B91a" resolve="leftVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmU6LW" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
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-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmU8DQ" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmU8DR" role="2Oq$k0">
-                              <ref role="3cqZAo" node="7d$oK1$B9MP" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmU8DS" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
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-                <node concept="liA8E" id="56MMu0Aqjea" role="2OqNvi">
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-                <node concept="liA8E" id="56MMu0AqjqQ" role="2OqNvi">
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-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
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-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
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-          <node concept="3eNFk2" id="7d$oK1$BQcU" role="3eNLev">
-            <node concept="3clFbS" id="7d$oK1$BQcV" role="3eOfB_">
-              <node concept="3SKdUt" id="7d$oK1$BQcW" role="3cqZAp">
-                <node concept="3SKdUq" id="7d$oK1$BQcX" role="3SKWNk">
-                  <property role="3SKdUp" value="TODO unchecked cast" />
-                </node>
-              </node>
-              <node concept="3clFbF" id="7d$oK1$BY2N" role="3cqZAp">
-                <node concept="2OqwBi" id="7d$oK1$BQcZ" role="3clFbG">
-                  <node concept="37vLTw" id="7d$oK1$BQd0" role="2Oq$k0">
-                    <ref role="3cqZAo" node="2GO7tyJTqqn" resolve="solver" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQd1" role="2OqNvi">
-                    <ref role="37wK5l" node="2GO7tyJLmlH" resolve="tellContains" />
-                    <node concept="37vLTw" id="7d$oK1$BQd2" role="37wK5m">
-                      <ref role="3cqZAo" node="7d$oK1$BQbZ" resolve="leftVal" />
-                    </node>
-                    <node concept="2OqwBi" id="3HJTsBmUb1I" role="37wK5m">
-                      <node concept="1eOMI4" id="3HJTsBmUb1J" role="2Oq$k0">
-                        <node concept="10QFUN" id="3HJTsBmUb1K" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmUb1L" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmUb1M" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmUb1N" role="2Oq$k0">
-                              <ref role="3cqZAo" node="7d$oK1$BQc5" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmUb1O" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmUb1P" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-              <node concept="3cpWs6" id="7d$oK1$C8H8" role="3cqZAp" />
-              <node concept="3clFbH" id="7d$oK1$C9cR" role="3cqZAp" />
-            </node>
-            <node concept="1Wc70l" id="7d$oK1$BQdb" role="3eO9$A">
-              <node concept="2OqwBi" id="7d$oK1$BQdc" role="3uHU7w">
-                <node concept="2OqwBi" id="7d$oK1$BQdd" role="2Oq$k0">
-                  <node concept="37vLTw" id="7d$oK1$BQde" role="2Oq$k0">
-                    <ref role="3cqZAo" node="7d$oK1$BQc5" resolve="rightVal" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQdf" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                  </node>
-                </node>
-                <node concept="liA8E" id="56MMu0AqiZI" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
-                  <node concept="Rm8GO" id="56MMu0AqiZJ" role="37wK5m">
-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
-                    <ref role="Rm8GQ" to="jfki:~Node.VAR" resolve="VAR" />
-                  </node>
-                </node>
-              </node>
-              <node concept="2OqwBi" id="7d$oK1$BQdh" role="3uHU7B">
-                <node concept="2OqwBi" id="7d$oK1$BQdi" role="2Oq$k0">
-                  <node concept="37vLTw" id="7d$oK1$BQdj" role="2Oq$k0">
-                    <ref role="3cqZAo" node="7d$oK1$BQbZ" resolve="leftVal" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQdk" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                  </node>
-                </node>
-                <node concept="liA8E" id="56MMu0Ap7qM" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
-                  <node concept="Rm8GO" id="56MMu0Ap7qN" role="37wK5m">
-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
-                    <ref role="Rm8GQ" to="jfki:~Node.FUN" resolve="FUN" />
-                  </node>
-                </node>
-              </node>
-            </node>
-          </node>
-          <node concept="3eNFk2" id="7d$oK1$BQdm" role="3eNLev">
-            <node concept="3clFbS" id="7d$oK1$BQdn" role="3eOfB_">
-              <node concept="3SKdUt" id="7d$oK1$BQdo" role="3cqZAp">
-                <node concept="3SKdUq" id="7d$oK1$BQdp" role="3SKWNk">
-                  <property role="3SKdUp" value="TODO unchecked cast" />
-                </node>
-              </node>
-              <node concept="3clFbF" id="7d$oK1$C38t" role="3cqZAp">
-                <node concept="2OqwBi" id="7d$oK1$BQdr" role="3clFbG">
-                  <node concept="37vLTw" id="7d$oK1$BQds" role="2Oq$k0">
-                    <ref role="3cqZAo" node="2GO7tyJTqqn" resolve="solver" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQdt" role="2OqNvi">
-                    <ref role="37wK5l" node="2GO7tyJLmm5" resolve="tellContains" />
-                    <node concept="2OqwBi" id="3HJTsBmUbk8" role="37wK5m">
-                      <node concept="1eOMI4" id="3HJTsBmUbk9" role="2Oq$k0">
-                        <node concept="10QFUN" id="3HJTsBmUbka" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmUbkb" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmUbkc" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmUbkd" role="2Oq$k0">
-                              <ref role="3cqZAo" node="7d$oK1$BQbZ" resolve="leftVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmUbke" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmUbkf" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
-                    </node>
-                    <node concept="2OqwBi" id="3HJTsBmUbRs" role="37wK5m">
-                      <node concept="1eOMI4" id="3HJTsBmUbRt" role="2Oq$k0">
-                        <node concept="10QFUN" id="3HJTsBmUbRu" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmUbRv" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmUbRw" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmUbRx" role="2Oq$k0">
-                              <ref role="3cqZAo" node="7d$oK1$BQc5" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmUbRy" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmUbRz" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-              <node concept="3cpWs6" id="7d$oK1$Cako" role="3cqZAp" />
-            </node>
-            <node concept="1Wc70l" id="7d$oK1$BQdI" role="3eO9$A">
-              <node concept="2OqwBi" id="7d$oK1$BQdJ" role="3uHU7w">
-                <node concept="2OqwBi" id="7d$oK1$BQdK" role="2Oq$k0">
-                  <node concept="37vLTw" id="7d$oK1$BQdL" role="2Oq$k0">
-                    <ref role="3cqZAo" node="7d$oK1$BQc5" resolve="rightVal" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQdM" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                  </node>
-                </node>
-                <node concept="liA8E" id="56MMu0AqjjC" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
-                  <node concept="Rm8GO" id="56MMu0AqjjD" role="37wK5m">
-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
-                    <ref role="Rm8GQ" to="jfki:~Node.VAR" resolve="VAR" />
-                  </node>
-                </node>
-              </node>
-              <node concept="2OqwBi" id="7d$oK1$BQdO" role="3uHU7B">
-                <node concept="2OqwBi" id="7d$oK1$BQdP" role="2Oq$k0">
-                  <node concept="37vLTw" id="7d$oK1$BQdQ" role="2Oq$k0">
-                    <ref role="3cqZAo" node="7d$oK1$BQbZ" resolve="leftVal" />
-                  </node>
-                  <node concept="liA8E" id="7d$oK1$BQdR" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                  </node>
-                </node>
-                <node concept="liA8E" id="56MMu0ApUmr" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
-                  <node concept="Rm8GO" id="56MMu0ApUms" role="37wK5m">
-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
-                    <ref role="Rm8GQ" to="jfki:~Node.VAR" resolve="VAR" />
-                  </node>
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbH" id="7d$oK1$BQdT" role="3cqZAp" />
-        <node concept="YS8fn" id="7d$oK1$BQdU" role="3cqZAp">
-          <node concept="2ShNRf" id="7d$oK1$BQdV" role="YScLw">
-            <node concept="1pGfFk" id="7d$oK1$BQdW" role="2ShVmc">
-              <ref role="37wK5l" to="e2lb:~IllegalStateException.&lt;init&gt;()" resolve="IllegalStateException" />
-            </node>
-          </node>
-        </node>
-      </node>
-    </node>
-    <node concept="2tJIrI" id="2GO7tyJTqM6" role="jymVt" />
-  </node>
-  <node concept="312cEu" id="2GO7tyJW8Ef">
-    <property role="TrG5h" value="ContainmentSolverImpl" />
-    <node concept="3Tm1VV" id="2GO7tyJW8Eg" role="1B3o_S" />
-    <node concept="3uibUv" id="2GO7tyJW8JI" role="EKbjA">
-      <ref role="3uigEE" node="2GO7tyJLmlw" resolve="ContainmentSolver" />
-    </node>
-    <node concept="2tJIrI" id="2GO7tyJW9YY" role="jymVt" />
-    <node concept="3clFbW" id="2GO7tyJWdjK" role="jymVt">
-      <node concept="37vLTG" id="2GO7tyK1HpB" role="3clF46">
-        <property role="TrG5h" value="scope" />
-        <node concept="3uibUv" id="2GO7tyK1HpC" role="1tU5fm">
-          <ref role="3uigEE" to="yg8f:2GO7tyJS2HQ" resolve="SolverFarm" />
-        </node>
-      </node>
-      <node concept="3cqZAl" id="2GO7tyJWdjM" role="3clF45" />
-      <node concept="3Tm1VV" id="2GO7tyJWdjN" role="1B3o_S" />
-      <node concept="3clFbS" id="2GO7tyJWdjO" role="3clF47">
-        <node concept="1VxSAg" id="2GO7tyJWdRe" role="3cqZAp">
-          <ref role="37wK5l" node="2GO7tyJWavP" resolve="ContainmentSolverImpl" />
-          <node concept="37vLTw" id="2GO7tyK1Idn" role="37wK5m">
-            <ref role="3cqZAo" node="2GO7tyK1HpB" resolve="scope" />
-          </node>
-          <node concept="2YIFZM" id="2GO7tyJWe_S" role="37wK5m">
-            <ref role="37wK5l" to="w2rx:~ConstraintSystem.get():runtime.ConstraintSystem" resolve="get" />
-            <ref role="1Pybhc" to="w2rx:~ConstraintSystem" resolve="ConstraintSystem" />
-          </node>
-        </node>
-      </node>
-    </node>
-    <node concept="2tJIrI" id="2GO7tyJWcNc" role="jymVt" />
-    <node concept="3clFbW" id="2GO7tyJWavP" role="jymVt">
-      <node concept="37vLTG" id="2GO7tyJDsSC" role="3clF46">
-        <property role="TrG5h" value="scope" />
-        <node concept="3uibUv" id="2GO7tyJSdfV" role="1tU5fm">
-          <ref role="3uigEE" to="yg8f:2GO7tyJS2HQ" resolve="SolverFarm" />
-        </node>
-      </node>
-      <node concept="37vLTG" id="2GO7tyJWbey" role="3clF46">
-        <property role="TrG5h" value="constraintSystem" />
-        <node concept="3uibUv" id="2GO7tyJWbE$" role="1tU5fm">
-          <ref role="3uigEE" to="w2rx:~ConstraintSystem" resolve="ConstraintSystem" />
-        </node>
-      </node>
-      <node concept="3cqZAl" id="2GO7tyJWavR" role="3clF45" />
-      <node concept="3Tm1VV" id="2GO7tyJWavS" role="1B3o_S" />
-      <node concept="3clFbS" id="2GO7tyJWavT" role="3clF47">
-        <node concept="3clFbF" id="2GO7tyJWbJX" role="3cqZAp">
-          <node concept="37vLTI" id="2GO7tyJWbJZ" role="3clFbG">
-            <node concept="2OqwBi" id="2GO7tyJWbK3" role="37vLTJ">
-              <node concept="Xjq3P" id="2GO7tyJWbK6" role="2Oq$k0" />
-              <node concept="2OwXpG" id="2GO7tyJWbK2" role="2OqNvi">
-                <ref role="2Oxat5" node="2GO7tyJWbJT" resolve="constraintSystem" />
-              </node>
-            </node>
-            <node concept="37vLTw" id="2GO7tyJWbK7" role="37vLTx">
-              <ref role="3cqZAo" node="2GO7tyJWbey" resolve="constraintSystem" />
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbF" id="2GO7tyK1GJ7" role="3cqZAp">
-          <node concept="37vLTI" id="2GO7tyK1GJ9" role="3clFbG">
-            <node concept="2OqwBi" id="2GO7tyK1GJd" role="37vLTJ">
-              <node concept="Xjq3P" id="2GO7tyK1GJg" role="2Oq$k0" />
-              <node concept="2OwXpG" id="2GO7tyK1GJc" role="2OqNvi">
-                <ref role="2Oxat5" node="2GO7tyK1GJ3" resolve="scope" />
-              </node>
-            </node>
-            <node concept="37vLTw" id="2GO7tyK1GJh" role="37vLTx">
-              <ref role="3cqZAo" node="2GO7tyJDsSC" resolve="scope" />
-            </node>
-          </node>
-        </node>
-      </node>
-    </node>
-    <node concept="2tJIrI" id="2GO7tyJWcgV" role="jymVt" />
-    <node concept="3clFb_" id="2GO7tyJW8LD" role="jymVt">
-      <property role="1EzhhJ" value="false" />
-      <property role="TrG5h" value="tellContains" />
-      <node concept="37vLTG" id="2GO7tyJW8LE" role="3clF46">
-        <property role="TrG5h" value="leftVal" />
-        <node concept="3uibUv" id="2GO7tyJW8LF" role="1tU5fm">
-          <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
-        </node>
-      </node>
-      <node concept="37vLTG" id="2GO7tyJW8LG" role="3clF46">
-        <property role="TrG5h" value="rightVal" />
-        <node concept="3uibUv" id="2GO7tyJW8LH" role="1tU5fm">
-          <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
-        </node>
-      </node>
-      <node concept="3cqZAl" id="2GO7tyJW8LI" role="3clF45" />
-      <node concept="3Tm1VV" id="2GO7tyJW8LJ" role="1B3o_S" />
-      <node concept="2AHcQZ" id="2GO7tyJW8LL" role="2AJF6D">
-        <ref role="2AI5Lk" to="9sk9:~JCHR_Tells" resolve="JCHR_Tells" />
-        <node concept="2B6LJw" id="2GO7tyJW8LM" role="2B76xF">
-          <ref role="2B6OnR" to="9sk9:~JCHR_Tells.value()" resolve="value" />
-          <node concept="10M0yZ" id="2GO7tyJW8LN" role="2B70Vg">
-            <ref role="1PxDUh" node="2GO7tyJMZEq" resolve="ContainmentBuiltinConstraint" />
-            <ref role="3cqZAo" node="2GO7tyJMZW7" resolve="CONTAINS" />
-          </node>
-        </node>
-      </node>
-      <node concept="3clFbS" id="2GO7tyJW8LO" role="3clF47">
-        <node concept="3clFbJ" id="7d$oK1$nQ56" role="3cqZAp">
-          <node concept="3clFbS" id="7d$oK1$nQ57" role="3clFbx">
-            <node concept="3cpWs6" id="7d$oK1$nQ58" role="3cqZAp" />
-          </node>
-          <node concept="3clFbC" id="7d$oK1$nQ5a" role="3clFbw">
-            <node concept="37vLTw" id="7d$oK1$nRny" role="3uHU7w">
-              <ref role="3cqZAo" node="2GO7tyJW8LG" resolve="rightVal" />
-            </node>
-            <node concept="37vLTw" id="7d$oK1$nQOB" role="3uHU7B">
-              <ref role="3cqZAo" node="2GO7tyJW8LE" resolve="leftVal" />
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbH" id="7d$oK1$uVhR" role="3cqZAp" />
-        <node concept="3clFbJ" id="7d$oK1$p8wj" role="3cqZAp">
-          <node concept="3clFbS" id="7d$oK1$p8wm" role="3clFbx">
-            <node concept="3clFbF" id="6SkxsMzDe$7" role="3cqZAp">
-              <node concept="2YIFZM" id="6SkxsMzDe$8" role="3clFbG">
-                <ref role="1Pybhc" to="7uia:~ConstraintSystemUtil" resolve="ConstraintSystemUtil" />
-                <ref role="37wK5l" to="7uia:~ConstraintSystemUtil.queue(ConstraintSystem,Runnable)" resolve="queue" />
-                <node concept="37vLTw" id="6SkxsMzDe$9" role="37wK5m">
-                  <ref role="3cqZAo" node="2GO7tyJWbJT" resolve="constraintSystem" />
-                </node>
-                <node concept="1bVj0M" id="6SkxsMzDe$a" role="37wK5m">
-                  <node concept="3clFbS" id="6SkxsMzDe$b" role="1bW5cS">
-                    <node concept="3clFbF" id="6SkxsMzDe$c" role="3cqZAp">
-                      <node concept="1rXfSq" id="6SkxsMzDe$d" role="3clFbG">
-                        <ref role="37wK5l" node="2GO7tyJW8LD" resolve="tellContains" />
-                        <node concept="37vLTw" id="6SkxsMzDrQQ" role="37wK5m">
-                          <ref role="3cqZAo" node="2GO7tyJW8LE" resolve="leftVal" />
-                        </node>
-                        <node concept="37vLTw" id="6SkxsMzDsn9" role="37wK5m">
-                          <ref role="3cqZAo" node="2GO7tyJW8LG" resolve="rightVal" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-            </node>
-            <node concept="3cpWs6" id="6SkxsMzDe$g" role="3cqZAp" />
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-          <node concept="2OqwBi" id="6SkxsMzDe$h" role="3clFbw">
-            <node concept="37vLTw" id="6SkxsMzDe$i" role="2Oq$k0">
-              <ref role="3cqZAo" node="2GO7tyJWbJT" resolve="constraintSystem" />
-            </node>
-            <node concept="liA8E" id="6SkxsMzDe$j" role="2OqNvi">
-              <ref role="37wK5l" to="w2rx:~ConstraintSystem.isQueuing():boolean" resolve="isQueuing" />
-            </node>
-          </node>
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-    </node>
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-
diff --git a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/conversion.mps b/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/conversion.mps
deleted file mode 100644
index c7c4feec..00000000
--- a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/conversion.mps
+++ /dev/null
@@ -1,2990 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model ref="r:df98e090-e1cf-4263-9336-dc1ffd952995(jetbrains.mps.typechecking.builtin.conversion)">
-  <persistence version="9" />
-  <languages>
-    <use id="fd392034-7849-419d-9071-12563d152375" name="jetbrains.mps.baseLanguage.closures" version="-1" />
-    <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="1" />
-  </languages>
-  <imports>
-    <import index="oy3s" ref="r:a6030cee-34eb-4503-b1bf-015fe5cd8c1a(jetbrains.mps.logic.builtin.unification)" />
-    <import index="w2rx" ref="f:java_stub#b984ee52-f34d-4b6d-8812-866c1d3eae31#runtime(jetbrains.mps.jchr.runtime/runtime@java_stub)" />
-    <import index="ie8e" ref="r:ab2605ab-b4bc-4e80-a8ca-19a4a8465c01(jetbrains.mps.unification.tree)" />
-    <import index="9sk9" ref="f:java_stub#b984ee52-f34d-4b6d-8812-866c1d3eae31#annotations(jetbrains.mps.jchr.runtime/annotations@java_stub)" />
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-              <node concept="liA8E" id="56MMu0Ap1Z2" role="2OqNvi">
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-              <node concept="liA8E" id="56MMu0AparB" role="2OqNvi">
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-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmTSI4" role="10QFUP">
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-                              <ref role="3cqZAo" node="5PpdwMfExSI" resolve="leftVal" />
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-                            <node concept="liA8E" id="3HJTsBmTSI6" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
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-                <node concept="liA8E" id="56MMu0Apa_D" role="2OqNvi">
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-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
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-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
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-                <node concept="liA8E" id="56MMu0AqkUw" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
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-              <node concept="3cpWs6" id="5PpdwMfEOkq" role="3cqZAp">
-                <node concept="2OqwBi" id="5PpdwMfEOkr" role="3cqZAk">
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-                    </node>
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-                        <node concept="10QFUN" id="3HJTsBmTUP0" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmTUP1" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmTUP2" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmTUP3" role="2Oq$k0">
-                              <ref role="3cqZAo" node="5PpdwMfEyCZ" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmTUP4" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmTUP5" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
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-              <node concept="3clFbH" id="5PpdwMfEOkp" role="3cqZAp" />
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-                </node>
-                <node concept="liA8E" id="56MMu0Aqkv6" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
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-                    <ref role="3cqZAo" node="5PpdwMfExSI" resolve="leftVal" />
-                  </node>
-                  <node concept="liA8E" id="5PpdwMfE_4F" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
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-                </node>
-                <node concept="liA8E" id="56MMu0ApaTo" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
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-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
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-                <node concept="3SKdUq" id="5PpdwMfESBe" role="3SKWNk">
-                  <property role="3SKdUp" value="TODO: unchecked cast" />
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-              </node>
-              <node concept="3cpWs6" id="5PpdwMfESB0" role="3cqZAp">
-                <node concept="2OqwBi" id="5PpdwMfESB1" role="3cqZAk">
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-                    <ref role="3cqZAo" node="2GO7tyJTr50" resolve="solver" />
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-                    <ref role="37wK5l" node="2GO7tyJDsXC" resolve="askConv" />
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-                      <node concept="1eOMI4" id="3HJTsBmTWNY" role="2Oq$k0">
-                        <node concept="10QFUN" id="3HJTsBmTWNZ" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmTWO0" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmTWO1" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmTWO2" role="2Oq$k0">
-                              <ref role="3cqZAo" node="5PpdwMfExSI" resolve="leftVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmTWO3" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmTWO4" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
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-                    <node concept="2OqwBi" id="3HJTsBmTYFQ" role="37wK5m">
-                      <node concept="1eOMI4" id="3HJTsBmTYFR" role="2Oq$k0">
-                        <node concept="10QFUN" id="3HJTsBmTYFS" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmTYFT" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmTYFU" role="10QFUP">
-                            <node concept="37vLTw" id="3HJTsBmTYFV" role="2Oq$k0">
-                              <ref role="3cqZAo" node="5PpdwMfEyCZ" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmTYFW" role="2OqNvi">
-                              <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="3HJTsBmTYFX" role="2OqNvi">
-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
-                      </node>
-                    </node>
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-            <node concept="1Wc70l" id="5PpdwMfEAqm" role="3eO9$A">
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-                    <ref role="3cqZAo" node="5PpdwMfEyCZ" resolve="rightVal" />
-                  </node>
-                  <node concept="liA8E" id="5PpdwMfEAqq" role="2OqNvi">
-                    <ref role="37wK5l" to="ie8e:2xQ7eRACJS8" resolve="root" />
-                  </node>
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-                <node concept="liA8E" id="56MMu0AqkHD" role="2OqNvi">
-                  <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
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-                <node concept="liA8E" id="56MMu0AqkN7" role="2OqNvi">
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-                    <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
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-        <node concept="3clFbH" id="5PpdwMfF7Rc" role="3cqZAp" />
-        <node concept="YS8fn" id="7d$oK1$BN0e" role="3cqZAp">
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-    <node concept="2tJIrI" id="2GO7tyJZbII" role="jymVt" />
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-        <property role="TrG5h" value="solver" />
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-      <node concept="37vLTG" id="2GO7tyJTr5i" role="3clF46">
-        <property role="TrG5h" value="arg" />
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-      <node concept="3clFbS" id="2GO7tyJTr5m" role="3clF47">
-        <node concept="3cpWs8" id="5PpdwMfF9Sc" role="3cqZAp">
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-              <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-              <node concept="3cmrfG" id="5PpdwMfF9Sg" role="AHEQo">
-                <property role="3cmrfH" value="0" />
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-              <node concept="37vLTw" id="5PpdwMfF9Sh" role="AHHXb">
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-            <node concept="3uibUv" id="5PpdwMfF9S8" role="1tU5fm">
-              <ref role="3uigEE" to="ie8e:2xQ7eRABXh4" resolve="Tree" />
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-            <node concept="AH0OO" id="5PpdwMfF9S9" role="33vP2m">
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-              <node concept="37vLTw" id="5PpdwMfF9Sb" role="AHHXb">
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-        <node concept="3clFbH" id="5PpdwMfF9S5" role="3cqZAp" />
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-                  <ref role="37wK5l" node="2GO7tyJDsWk" resolve="tellConv" />
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-              <node concept="liA8E" id="56MMu0ApaJy" role="2OqNvi">
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-                <node concept="liA8E" id="5PpdwMfF9QA" role="2OqNvi">
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-              <node concept="liA8E" id="56MMu0ApbeZ" role="2OqNvi">
-                <ref role="37wK5l" to="jfki:~Node.is(Kind)" resolve="is" />
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-                  <ref role="1Px2BO" to="jfki:~Node.Kind" resolve="Node.Kind" />
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-                        <node concept="10QFUN" id="3HJTsBmU1fb" role="1eOMHV">
-                          <node concept="3uibUv" id="3HJTsBmU1fc" role="10QFUM">
-                            <ref role="3uigEE" to="oy3s:3HJTsBmSn3l" resolve="TreeLogical.TreeLogicalVar" />
-                          </node>
-                          <node concept="2OqwBi" id="3HJTsBmU1fd" role="10QFUP">
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-                              <ref role="3cqZAo" node="5PpdwMfF9S7" resolve="rightVal" />
-                            </node>
-                            <node concept="liA8E" id="3HJTsBmU1ff" role="2OqNvi">
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-                            </node>
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-                        <ref role="37wK5l" to="oy3s:3HJTsBmSn3F" resolve="logical" />
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-
diff --git a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/subtyping.mps b/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/subtyping.mps
deleted file mode 100644
index 1c0cda04..00000000
--- a/solutions/jetbrains.mps.typechecking.solving/models/jetbrains/mps/typechecking/builtin/subtyping.mps
+++ /dev/null
@@ -1,1089 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model ref="r:716ee8d5-e209-473b-a7f4-704982de9b92(jetbrains.mps.typechecking.builtin.subtyping)">
-  <persistence version="9" />
-  <languages>
-    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
-  </languages>
-  <imports>
-    <import index="k7g3" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.util(JDK/java.util@java_stub)" />
-    <import index="ie8e" ref="r:ab2605ab-b4bc-4e80-a8ca-19a4a8465c01(jetbrains.mps.unification.tree)" />
-    <import index="oy3s" ref="r:a6030cee-34eb-4503-b1bf-015fe5cd8c1a(jetbrains.mps.logic.builtin.unification)" />
-    <import index="c87j" ref="r:db5d11a3-3c62-4a1b-ace3-b983df6a66b4(jetbrains.mps.type.inference.common)" />
-    <import index="zt4h" ref="r:e67bd817-e7ca-40c9-9f79-95fad12bb615(jetbrains.mps.type.inference.baseLanguage)" />
-    <import index="yg8f" ref="r:e213377a-f1a7-4ba7-9d08-96bcb97ed8ce(jetbrains.mps.logic.builtin)" />
-    <import index="mqgp" ref="r:df98e090-e1cf-4263-9336-dc1ffd952995(jetbrains.mps.typechecking.builtin.conversion)" />
-    <import index="zeuh" ref="r:f694851a-c984-440d-bb3c-f151b8dba5af(jetbrains.mps.typechecking.builtin.containment)" />
-    <import index="e2lb" ref="f:java_stub#6354ebe7-c22a-4a0f-ac54-50b52ab9b065#java.lang(JDK/java.lang@java_stub)" implicit="true" />
-  </imports>
-  <registry>
-    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
-      <concept id="1080223426719" name="jetbrains.mps.baseLanguage.structure.OrExpression" flags="nn" index="22lmx$" />
-      <concept id="1219920932475" name="jetbrains.mps.baseLanguage.structure.VariableArityType" flags="in" index="8X2XB">
-        <child id="1219921048460" name="componentType" index="8Xvag" />
-      </concept>
-      <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
-        <child id="1068498886297" name="rValue" index="37vLTx" />
-        <child id="1068498886295" name="lValue" index="37vLTJ" />
-      </concept>
-      <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
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-        <child id="1076505808688" name="condition" index="2$JKZa" />
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-      <concept id="1224848483129" name="jetbrains.mps.baseLanguage.structure.IBLDeprecatable" flags="ng" index="IEa8$">
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-      </concept>
-      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
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-      </concept>
-      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
-        <child id="1197027771414" name="operand" index="2Oq$k0" />
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-        <reference id="1197029500499" name="fieldDeclaration" index="2Oxat5" />
-      </concept>
-      <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
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-      <concept id="1070462154015" name="jetbrains.mps.baseLanguage.structure.StaticFieldDeclaration" flags="ig" index="Wx3nA" />
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