diff --git a/VSharp.API/VSharp.cs b/VSharp.API/VSharp.cs
index 1f6aeea35..1d7d8d69e 100644
--- a/VSharp.API/VSharp.cs
+++ b/VSharp.API/VSharp.cs
@@ -81,9 +81,9 @@ public void GenerateReport(TextWriter writer)
         {
             writer.WriteLine("Total time: {0:00}:{1:00}:{2:00}.{3}.", TestGenerationTime.Hours,
                 TestGenerationTime.Minutes, TestGenerationTime.Seconds, TestGenerationTime.Milliseconds);
-            writer.WriteLine("Approximate coverage: {0}", GeneratedTestInfos.LastOrDefault().Coverage);
+            writer.WriteLine($"Approximate coverage: {GeneratedTestInfos.LastOrDefault().Coverage}");
             if (Coverage >= 0)
-                writer.WriteLine("Precise coverage: {0}", Coverage);
+                writer.WriteLine($"Precise coverage: {Coverage}");
             var count = IncompleteBranches.Count();
             if (count > 0)
             {
diff --git a/VSharp.Explorer/Statistics.fs b/VSharp.Explorer/Statistics.fs
index f2fc87709..034052ebc 100644
--- a/VSharp.Explorer/Statistics.fs
+++ b/VSharp.Explorer/Statistics.fs
@@ -163,6 +163,7 @@ type public SVMStatistics(entryMethods : Method seq, generalizeGenericsCoverage
         Logger.traceWithTag Logger.stateTraceTag $"{stepsCount} FORWARD: {s.internalId}"
 
         let setCoveredIfNeeded (loc : codeLocation) =
+            // 'Call' instructions are considered covered only after return, because 'call' can throw exception
             if s.StackSize <= stackSize && loc.offset = loc.BasicBlock.FinalOffset then
                 s.AddLocationToHistory loc
 
@@ -202,10 +203,6 @@ type public SVMStatistics(entryMethods : Method seq, generalizeGenericsCoverage
             if currentMethod.InCoverageZone && not isCovered then
                 visitedBlocksNotCoveredByTests.TryAdd(s, Set.empty) |> ignore
                 Interlocked.Exchange(ref isVisitedBlocksNotCoveredByTestsRelevant, 0) |> ignore
-            (*
-                Call instructions are considered covered only after return
-                (because call can throw exception)
-            *)
             setCoveredIfNeeded currentLoc
         | Some currentLoc -> setCoveredIfNeeded currentLoc
         | None -> ()
diff --git a/VSharp.IL/MethodBody.fs b/VSharp.IL/MethodBody.fs
index d40ff4611..7286bb7c8 100644
--- a/VSharp.IL/MethodBody.fs
+++ b/VSharp.IL/MethodBody.fs
@@ -101,8 +101,8 @@ type MethodWithBody internal (m : MethodBase) =
         | None -> None)
 
     let instructions = lazy(
-        match rawBody.Value with
-        | Some rawBody -> ILRewriter.instructionsOfMethod rawBody actualMethod
+        match methodBody.Value with
+        | Some methodBody -> ILRewriter.instructionsOfMethod methodBody actualMethod
         | None -> internalfailf $"Getting instructions of method {m} without body (extern or abstract)")
 
     let invocationFlags = lazy (
diff --git a/VSharp.Test/IntegrationTests.cs b/VSharp.Test/IntegrationTests.cs
index f3004b894..f60c291c5 100644
--- a/VSharp.Test/IntegrationTests.cs
+++ b/VSharp.Test/IntegrationTests.cs
@@ -505,7 +505,7 @@ private TestResult Explore(TestExecutionContext context)
                     else
                     {
                         context.CurrentResult.SetResult(
-                            _expectedCoverage is not null
+                            _expectedCoverage > 0
                                 ? ResultState.Failure
                                 : ResultState.Success
                         );