diff --git a/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/javagen/ActionSequence2JavaPrinter.kt b/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/javagen/ActionSequence2JavaPrinter.kt
index 91a3ff6ba..f1cabf11d 100644
--- a/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/javagen/ActionSequence2JavaPrinter.kt
+++ b/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/javagen/ActionSequence2JavaPrinter.kt
@@ -7,12 +7,66 @@ import org.vorpal.research.kex.config.kexConfig
 import org.vorpal.research.kex.ktype.KexType
 import org.vorpal.research.kex.parameters.FinalParameters
 import org.vorpal.research.kex.parameters.Parameters
-import org.vorpal.research.kex.reanimator.actionsequence.*
+import org.vorpal.research.kex.reanimator.actionsequence.ActionList
+import org.vorpal.research.kex.reanimator.actionsequence.ActionSequence
+import org.vorpal.research.kex.reanimator.actionsequence.ArrayClassConstantGetter
+import org.vorpal.research.kex.reanimator.actionsequence.ArrayWrite
+import org.vorpal.research.kex.reanimator.actionsequence.ClassConstantGetter
+import org.vorpal.research.kex.reanimator.actionsequence.CodeAction
+import org.vorpal.research.kex.reanimator.actionsequence.ConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.DefaultConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.EnumValueCreation
+import org.vorpal.research.kex.reanimator.actionsequence.ExternalConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.ExternalMethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.FieldSetter
+import org.vorpal.research.kex.reanimator.actionsequence.InnerClassConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.MethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.MockCall
+import org.vorpal.research.kex.reanimator.actionsequence.MockList
+import org.vorpal.research.kex.reanimator.actionsequence.MockNewInstance
+import org.vorpal.research.kex.reanimator.actionsequence.MockSetField
+import org.vorpal.research.kex.reanimator.actionsequence.MockSetupMethod
+import org.vorpal.research.kex.reanimator.actionsequence.NewArray
+import org.vorpal.research.kex.reanimator.actionsequence.NewArrayWithInitializer
+import org.vorpal.research.kex.reanimator.actionsequence.PrimaryValue
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionArrayWrite
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionCall
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionGetField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionGetStaticField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionList
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionNewArray
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionNewInstance
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionSetField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionSetStaticField
+import org.vorpal.research.kex.reanimator.actionsequence.StaticFieldGetter
+import org.vorpal.research.kex.reanimator.actionsequence.StaticFieldSetter
+import org.vorpal.research.kex.reanimator.actionsequence.StaticMethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.StringValue
+import org.vorpal.research.kex.reanimator.actionsequence.TestCall
+import org.vorpal.research.kex.reanimator.actionsequence.UnknownSequence
 import org.vorpal.research.kex.reanimator.codegen.ActionSequencePrinter
-import org.vorpal.research.kex.util.*
+import org.vorpal.research.kex.util.getConstructor
+import org.vorpal.research.kex.util.getMethod
+import org.vorpal.research.kex.util.isSubtypeOfCached
+import org.vorpal.research.kex.util.javaString
+import org.vorpal.research.kex.util.kex
+import org.vorpal.research.kex.util.loadClass
 import org.vorpal.research.kfg.ir.Class
-import org.vorpal.research.kfg.type.*
+import org.vorpal.research.kfg.type.ArrayType
+import org.vorpal.research.kfg.type.BoolType
+import org.vorpal.research.kfg.type.ByteType
+import org.vorpal.research.kfg.type.CharType
+import org.vorpal.research.kfg.type.ClassType
+import org.vorpal.research.kfg.type.DoubleType
+import org.vorpal.research.kfg.type.FloatType
+import org.vorpal.research.kfg.type.IntType
+import org.vorpal.research.kfg.type.LongType
+import org.vorpal.research.kfg.type.NullType
+import org.vorpal.research.kfg.type.ShortType
 import org.vorpal.research.kfg.type.Type
+import org.vorpal.research.kfg.type.VoidType
+import org.vorpal.research.kfg.type.classType
+import org.vorpal.research.kfg.type.objectType
 import org.vorpal.research.kthelper.assert.ktassert
 import org.vorpal.research.kthelper.assert.unreachable
 import org.vorpal.research.kthelper.logging.log
@@ -468,9 +522,9 @@ open class ActionSequence2JavaPrinter(
                 actualTypes[this] = ASClass(ctx.types.byteType)
             }
 
-            is Char -> when (value) {
-                in 'a'..'z' -> "'$value'"
-                in 'A'..'Z' -> "'$value'"
+            is Char -> when {
+                value in 'a'..'z' -> "'$value'"
+                value in 'A'..'Z' -> "'$value'"
                 else -> "(char) ${value.code}"
             }.also {
                 actualTypes[this] = ASClass(ctx.types.charType)
diff --git a/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/kotlingen/ActionSequence2KotlinPrinter.kt b/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/kotlingen/ActionSequence2KotlinPrinter.kt
index 85d027e78..3d4e9e257 100644
--- a/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/kotlingen/ActionSequence2KotlinPrinter.kt
+++ b/kex-runner/src/main/kotlin/org/vorpal/research/kex/reanimator/codegen/kotlingen/ActionSequence2KotlinPrinter.kt
@@ -4,7 +4,39 @@ import org.vorpal.research.kex.ExecutionContext
 import org.vorpal.research.kex.ktype.KexType
 import org.vorpal.research.kex.parameters.FinalParameters
 import org.vorpal.research.kex.parameters.Parameters
-import org.vorpal.research.kex.reanimator.actionsequence.*
+import org.vorpal.research.kex.reanimator.actionsequence.ActionList
+import org.vorpal.research.kex.reanimator.actionsequence.ActionSequence
+import org.vorpal.research.kex.reanimator.actionsequence.ArrayClassConstantGetter
+import org.vorpal.research.kex.reanimator.actionsequence.ArrayWrite
+import org.vorpal.research.kex.reanimator.actionsequence.ClassConstantGetter
+import org.vorpal.research.kex.reanimator.actionsequence.CodeAction
+import org.vorpal.research.kex.reanimator.actionsequence.ConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.DefaultConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.EnumValueCreation
+import org.vorpal.research.kex.reanimator.actionsequence.ExternalConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.ExternalMethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.FieldSetter
+import org.vorpal.research.kex.reanimator.actionsequence.InnerClassConstructorCall
+import org.vorpal.research.kex.reanimator.actionsequence.MethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.MockList
+import org.vorpal.research.kex.reanimator.actionsequence.NewArray
+import org.vorpal.research.kex.reanimator.actionsequence.NewArrayWithInitializer
+import org.vorpal.research.kex.reanimator.actionsequence.PrimaryValue
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionArrayWrite
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionCall
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionGetField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionGetStaticField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionList
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionNewArray
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionNewInstance
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionSetField
+import org.vorpal.research.kex.reanimator.actionsequence.ReflectionSetStaticField
+import org.vorpal.research.kex.reanimator.actionsequence.StaticFieldGetter
+import org.vorpal.research.kex.reanimator.actionsequence.StaticFieldSetter
+import org.vorpal.research.kex.reanimator.actionsequence.StaticMethodCall
+import org.vorpal.research.kex.reanimator.actionsequence.StringValue
+import org.vorpal.research.kex.reanimator.actionsequence.TestCall
+import org.vorpal.research.kex.reanimator.actionsequence.UnknownSequence
 import org.vorpal.research.kex.reanimator.codegen.ActionSequencePrinter
 import org.vorpal.research.kex.util.getConstructor
 import org.vorpal.research.kex.util.getMethod
@@ -433,9 +465,9 @@ open class ActionSequence2KotlinPrinter(
                 actualTypes[this] = ASClass(ctx.types.byteType, nullable = false)
             }
 
-            is Char -> when (value) {
-                in 'a'..'z' -> "'$value'"
-                in 'A'..'Z' -> "'$value'"
+            is Char -> when {
+                value in 'a'..'z' -> "'$value'"
+                value in 'A'..'Z' -> "'$value'"
                 else -> "${value.code}.toChar()"
             }.also {
                 actualTypes[this] = ASClass(ctx.types.charType, nullable = false)
diff --git a/pom.xml b/pom.xml
index 526947f12..442b00512 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,10 +24,10 @@
         <maven.compiler.source>${jvm.version}</maven.compiler.source>
         <maven.compiler.target>${jvm.version}</maven.compiler.target>
 
-        <kotlin.version>1.9.23</kotlin.version>
+        <kotlin.version>2.0.0</kotlin.version>
         <kotlin.code.style>official</kotlin.code.style>
-        <serialization.version>1.5.1</serialization.version>
-        <coroutines.version>1.8.0</coroutines.version>
+        <serialization.version>1.7.0-RC</serialization.version>
+        <coroutines.version>1.8.1</coroutines.version>
         <collections.version>0.3.5</collections.version>
         <compiler-plugin.version>3.5.1</compiler-plugin.version>