diff --git a/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/CommonInst.kt b/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/CommonInst.kt
index 5237519f1..458684399 100644
--- a/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/CommonInst.kt
+++ b/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/CommonInst.kt
@@ -20,9 +20,6 @@ import org.jacodb.api.common.CommonMethod
 
 interface CommonInst {
     val location: CommonInstLocation
-
-    val method: CommonMethod
-        get() = location.method
 }
 
 interface CommonInstLocation {
diff --git a/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/InstList.kt b/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/InstList.kt
deleted file mode 100644
index bd2943f4f..000000000
--- a/jacodb-api-common/src/main/kotlin/org/jacodb/api/common/cfg/InstList.kt
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- *  Copyright 2022 UnitTestBot contributors (utbot.org)
- * <p>
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- * <p>
- *  http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package org.jacodb.api.common.cfg
-
-interface InstList<INST> : Iterable<INST> {
-    val instructions: List<INST>
-    val size: Int
-    val indices: IntRange
-    val lastIndex: Int
-
-    operator fun get(index: Int): INST
-    fun getOrNull(index: Int): INST?
-
-    fun toMutableList(): MutableInstList<INST>
-}
-
-interface MutableInstList<INST> : InstList<INST> {
-    fun insertBefore(inst: INST, vararg newInstructions: INST)
-    fun insertBefore(inst: INST, newInstructions: Collection<INST>)
-    fun insertAfter(inst: INST, vararg newInstructions: INST)
-    fun insertAfter(inst: INST, newInstructions: Collection<INST>)
-    fun remove(inst: INST): Boolean
-    fun removeAll(inst: Collection<INST>): Boolean
-}
diff --git a/jacodb-api-jvm/src/main/kotlin/org/jacodb/api/jvm/cfg/JcInst.kt b/jacodb-api-jvm/src/main/kotlin/org/jacodb/api/jvm/cfg/JcInst.kt
index 4c813b3b7..dcafcf86b 100644
--- a/jacodb-api-jvm/src/main/kotlin/org/jacodb/api/jvm/cfg/JcInst.kt
+++ b/jacodb-api-jvm/src/main/kotlin/org/jacodb/api/jvm/cfg/JcInst.kt
@@ -55,8 +55,6 @@ interface JcInst : CommonInst {
     override val location: JcInstLocation
     val operands: List<JcExpr>
 
-    override val method: JcMethod
-        get() = location.method
     val lineNumber: Int
         get() = location.lineNumber
 
diff --git a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/JcBlockGraphImpl.kt b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/JcBlockGraphImpl.kt
index ddc8b17e1..cd69d769c 100644
--- a/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/JcBlockGraphImpl.kt
+++ b/jacodb-core/src/main/kotlin/org/jacodb/impl/cfg/JcBlockGraphImpl.kt
@@ -109,8 +109,8 @@ class JcBlockGraphImpl(
         (block.start.index..block.end.index).map { jcGraph.instructions[it] }
 
     override fun block(inst: JcInst): JcBasicBlock {
-        assert(inst.method == jcGraph.method) {
-            "required method of instruction ${jcGraph.method} but got ${inst.method}"
+        assert(inst.location.method == jcGraph.method) {
+            "required method of instruction ${jcGraph.method} but got ${inst.location.method}"
         }
         for (basicBlock in entries) {
             if (basicBlock.contains(inst)) {
diff --git a/jacodb-ets/src/main/kotlin/org/jacodb/ets/model/Stmt.kt b/jacodb-ets/src/main/kotlin/org/jacodb/ets/model/Stmt.kt
index 834ac3eb6..4875db2e4 100644
--- a/jacodb-ets/src/main/kotlin/org/jacodb/ets/model/Stmt.kt
+++ b/jacodb-ets/src/main/kotlin/org/jacodb/ets/model/Stmt.kt
@@ -25,9 +25,6 @@ import org.jacodb.api.common.cfg.CommonReturnInst
 interface EtsStmt : CommonInst {
     override val location: EtsStmtLocation
 
-    override val method: EtsMethod
-        get() = location.method
-
     interface Visitor<out R> {
         fun visit(stmt: EtsNopStmt): R
         fun visit(stmt: EtsAssignStmt): R
diff --git a/jacodb-ets/src/main/kotlin/org/jacodb/ets/utils/BlockCfgToDot.kt b/jacodb-ets/src/main/kotlin/org/jacodb/ets/utils/BlockCfgToDot.kt
index 6f75b4b52..af05679f8 100644
--- a/jacodb-ets/src/main/kotlin/org/jacodb/ets/utils/BlockCfgToDot.kt
+++ b/jacodb-ets/src/main/kotlin/org/jacodb/ets/utils/BlockCfgToDot.kt
@@ -154,7 +154,7 @@ fun InterproceduralCfg.toHighlightedDotWithCalls(
         val h = sanitize(stmt.hashCode())
         val clusterName = "cluster_${h}_B${parentBlock}"
         // method signature label
-        val methodSig = cfg.entries.first().method.signature
+        val methodSig = cfg.entries.first().location.method.signature
         // open subgraph
         lines += "  subgraph \"$clusterName\" {"
         lines += "    label=\"$methodSig\";"