diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ControllerImpl.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ControllerImpl.kt
index 2affcc3a..7f54d051 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ControllerImpl.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ControllerImpl.kt
@@ -309,7 +309,14 @@ fun createController(
 
     ControllerImpl(
         supervisor,
-        ProcessingStateImpl(Dispatcher(ruleIndex).front(), MatchJournalImpl(), ruleIndex, trace, profiler),
+        ProcessingStateImpl(
+            Dispatcher(ruleIndex).front(),
+            MatchJournalImpl(),
+            ruleIndex,
+            IncrementalProgramSpec.NonIncrSpec,
+            trace,
+            profiler
+        ),
         IncrementalProgramSpec.NonIncrSpec,
         trace,
         profiler
diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/EvaluationSessionImpl.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/EvaluationSessionImpl.kt
index ebe32615..953e822e 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/EvaluationSessionImpl.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/EvaluationSessionImpl.kt
@@ -53,7 +53,7 @@ internal class EvaluationSessionImpl private constructor (
         val dispatcher = Dispatcher(ruleIndex)
 
         if (ispec is IncrementalProgramSpec.NonIncrSpec || token == null) {
-            val state = ProcessingStateImpl(dispatcher.front(), MatchJournalImpl(ispec), ruleIndex, trace, profiler)
+            val state = ProcessingStateImpl(dispatcher.front(), MatchJournalImpl(ispec), ruleIndex, ispec, trace, profiler)
 
             this.controller = ControllerImpl(supervisor, state, ispec, trace, profiler)
             return controller.activate(main)
@@ -62,7 +62,7 @@ internal class EvaluationSessionImpl private constructor (
             val state = ProcessingStateImpl(
                 dispatcher.frontFromState(token.frontState),
                 MatchJournalImpl(ispec, token.journalView),
-                ruleIndex, trace, profiler
+                ruleIndex, ispec, trace, profiler
             )
 
             val rulesDiff = RulesDiff.findDiff(token.ruleTags, ruleIndex)
diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/MatchJournal.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/MatchJournal.kt
index 5f634eb2..18fa9665 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/MatchJournal.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/MatchJournal.kt
@@ -73,9 +73,6 @@ interface MatchJournal : MutableIterable<MatchJournal.Chunk> {
             }
         }.map { it.wrapped }
 
-        abstract fun findOccurrence(ctr: Constraint): Occurrence?
-        abstract fun principalOccurrence(): Occurrence?
-
         override fun toString() = "(id=$id, $justifications, ${match.rule().uniqueTag()}, ${entriesLog()})"
 
         override fun chunk(): Chunk = this
@@ -114,7 +111,7 @@ interface MatchJournal : MutableIterable<MatchJournal.Chunk> {
 
 
 internal open class MatchJournalImpl(
-    protected val ispec: IncrementalProgramSpec,
+    private val ispec: IncrementalProgramSpec,
     view: MatchJournal.View? = null
 ) : MatchJournal
 {
@@ -126,7 +123,7 @@ internal open class MatchJournalImpl(
         if (view == null) {
             hist = LinkedList()
             nextChunkId = 0
-            val initChunk = ChunkImpl(ispec, InitRuleMatch, nextChunkId, justsOf(nextChunkId))
+            val initChunk = ChunkImpl(InitRuleMatch, nextChunkId, justsOf(nextChunkId))
             nextChunkId++
             hist.add(initChunk)
         } else {
@@ -153,7 +150,7 @@ internal open class MatchJournalImpl(
         if (ispec.isPrincipal(match.rule()) || !justs.isEmpty) {
 
             justs.add(nextChunkId)
-            val newChunk = ChunkImpl(ispec, match, nextChunkId, justs)
+            val newChunk = ChunkImpl(match, nextChunkId, justs)
             pos.add(newChunk)
 
             ++nextChunkId
@@ -237,18 +234,11 @@ internal open class MatchJournalImpl(
     }
 
 
-    // todo: remove ispec from there
-    private class ChunkImpl(val ispec: IncrementalProgramSpec, match: RuleMatch, id: Int, justifications: Justs) : MatchJournal.Chunk(match, id, justifications)
+    private class ChunkImpl(match: RuleMatch, id: Int, justifications: Justs) : MatchJournal.Chunk(match, id, justifications)
     {
         var occurrences: MutableList<MatchJournal.Chunk.Entry> = mutableListOf()
 
         override fun entriesLog(): List<MatchJournal.Chunk.Entry> = occurrences
-
-        override fun findOccurrence(ctr: Constraint): Occurrence? =
-            activatedLog().find { it.constraint.symbol() == ctr.symbol() }
-
-        override fun principalOccurrence(): Occurrence? =
-            activatedLog().find { ispec.isPrincipal(it.constraint) }
     }
 
     class IndexImpl(ispec: IncrementalProgramSpec, chunks: Iterable<MatchJournal.Chunk>): MatchJournal.Index
diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ProcessingStateImpl.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ProcessingStateImpl.kt
index 1347720d..2de3a1b2 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ProcessingStateImpl.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ProcessingStateImpl.kt
@@ -44,6 +44,7 @@ import java.util.*
 internal class ProcessingStateImpl(private var dispatchingFront: Dispatcher.DispatchingFront,
                                    journal: MatchJournalImpl,
                                    ruleIndex: RuleIndex,
+                                   private val ispec: IncrementalProgramSpec = IncrementalProgramSpec.NonIncrSpec,
                                    val trace: EvaluationTrace = EvaluationTrace.NULL,
                                    val profiler: Profiler? = null)
     : StoreAwareJournalImpl(journal)
@@ -68,17 +69,6 @@ internal class ProcessingStateImpl(private var dispatchingFront: Dispatcher.Disp
     // fixme: wtf, why idea's compiler complains???
     override fun index(): MatchJournal.Index = journalIndex
 
-    // only for tests
-    fun pushActivateFirstOccOf(ctr: Constraint): Boolean {
-        val pos = currentPos()
-        val occ = pos.chunk().findOccurrence(ctr)
-        if (occ != null) {
-            execQueue.offer(ExecPos(pos, occ))
-            return true
-        }
-        return false
-    }
-
     fun invalidateByRules(ruleIds: Set<Any>) {
         val justificationRoots = mutableListOf<Int>()
 
@@ -358,8 +348,10 @@ internal class ProcessingStateImpl(private var dispatchingFront: Dispatcher.Disp
     }
 
 
-    // TODO: provide ispec to ProcessingStateImpl and use it
-    private fun Occurrence.isPrincipal() = this.constraint().isPrincipal()
+    private fun MatchJournal.Chunk.principalOccurrence(): Occurrence? =
+        activatedLog().find { ispec.isPrincipal(it.constraint) }
+
+    private fun Occurrence.isPrincipal() = ispec.isPrincipal(this.constraint())
 
     private fun Justs.intersects(other: Iterable<Int>): Boolean = other.any { this.contains(it) }