diff --git a/core/src/main/kotlin/cmu/pasta/fray/core/GlobalContext.kt b/core/src/main/kotlin/cmu/pasta/fray/core/GlobalContext.kt
index 2bbdc4d3..55062b06 100644
--- a/core/src/main/kotlin/cmu/pasta/fray/core/GlobalContext.kt
+++ b/core/src/main/kotlin/cmu/pasta/fray/core/GlobalContext.kt
@@ -494,7 +494,7 @@ object GlobalContext {
   }
 
   fun lockTryLock(lock: Any) {
-    lockImpl(lock, false, false, false)
+    lockImpl(lock, false, false, true)
   }
 
   fun lockImpl(lock: Any, isMonitorLock: Boolean, shouldBlock: Boolean, canInterrupt: Boolean) {
@@ -505,6 +505,10 @@ object GlobalContext {
     context.state = ThreadState.Enabled
     scheduleNextOperation(true)
 
+    if (canInterrupt) {
+      context.checkInterrupt()
+    }
+
     /**
      * We need a while loop here because even a thread unlock this thread and makes this thread
      * Enabled. It is still possible for a third thread to lock it again. t1 = {
diff --git a/core/src/main/kotlin/cmu/pasta/fray/core/TestRunner.kt b/core/src/main/kotlin/cmu/pasta/fray/core/TestRunner.kt
index 7a75f287..72593788 100644
--- a/core/src/main/kotlin/cmu/pasta/fray/core/TestRunner.kt
+++ b/core/src/main/kotlin/cmu/pasta/fray/core/TestRunner.kt
@@ -28,28 +28,32 @@ class TestRunner(val config: Configuration) {
   }
 
   fun run() {
-    setup()
-    val time = measureTimeMillis {
-      var i = 0
-      while (i != config.iter) {
-        println("Starting iteration $i")
-        try {
-          Runtime.DELEGATE = RuntimeDelegate()
-          Runtime.start()
-          config.executionInfo.executor.execute()
-          Runtime.onMainExit()
-        } catch (e: Throwable) {
-          Runtime.onReportError(e)
-          Runtime.onMainExit()
+    if (config.noFray) {
+      config.executionInfo.executor.execute()
+    } else {
+      setup()
+      val time = measureTimeMillis {
+        var i = 0
+        while (i != config.iter) {
+          println("Starting iteration $i")
+          try {
+            Runtime.DELEGATE = RuntimeDelegate()
+            Runtime.start()
+            config.executionInfo.executor.execute()
+            Runtime.onMainExit()
+          } catch (e: Throwable) {
+            Runtime.onReportError(e)
+            Runtime.onMainExit()
+          }
+          if (GlobalContext.bugFound) {
+            println("Error found at iter: $i")
+            break
+          }
+          i++
         }
-        if (GlobalContext.bugFound) {
-          println("Error found at iter: $i")
-          break
-        }
-        i++
+        GlobalContext.shutDown()
       }
-      GlobalContext.shutDown()
+      println("Analysis done in: $time ms")
     }
-    println("Analysis done in: $time ms")
   }
 }
diff --git a/core/src/main/kotlin/cmu/pasta/fray/core/command/Configuration.kt b/core/src/main/kotlin/cmu/pasta/fray/core/command/Configuration.kt
index 1b4e4641..bb4f8ba4 100644
--- a/core/src/main/kotlin/cmu/pasta/fray/core/command/Configuration.kt
+++ b/core/src/main/kotlin/cmu/pasta/fray/core/command/Configuration.kt
@@ -148,6 +148,7 @@ class MainCommand : CliktCommand() {
               "pos" to POS(),
               "random" to Rand(),
               "pct" to PCT())
+  val noFray by option("--no-fray").flag()
   val runConfig by
       option()
           .groupChoice(
@@ -166,7 +167,8 @@ class MainCommand : CliktCommand() {
         iter,
         scheduler!!.getScheduler(),
         fullSchedule,
-        logger!!.getLogger(report, fullSchedule))
+        logger!!.getLogger(report, fullSchedule),
+        noFray)
   }
 }
 
@@ -177,4 +179,5 @@ data class Configuration(
     val scheduler: Scheduler,
     val fullSchedule: Boolean,
     val logger: LoggerBase,
+    val noFray: Boolean = false
 ) {}
diff --git a/integration-tests/src/test/java/cmu/pasta/fray/it/IntegrationTestRunner.java b/integration-tests/src/test/java/cmu/pasta/fray/it/IntegrationTestRunner.java
index b584909d..ae149666 100644
--- a/integration-tests/src/test/java/cmu/pasta/fray/it/IntegrationTestRunner.java
+++ b/integration-tests/src/test/java/cmu/pasta/fray/it/IntegrationTestRunner.java
@@ -42,7 +42,8 @@ public String runTest(Function0<Unit> exec, Scheduler scheduler, int iter) {
                 iter,
                 scheduler,
                 true,
-                new JsonLogger("/tmp/report", false)
+                new JsonLogger("/tmp/report", false),
+                false
         );
         TestRunner runner = new TestRunner(config);
         runner.run();