diff --git a/dev.thihup.jvisualg.backend/dev.thihup.jvisualg.backend.java/src/main/java/dev/thihup/jvisualg/backend/java/JavaBackend.java b/dev.thihup.jvisualg.backend/dev.thihup.jvisualg.backend.java/src/main/java/dev/thihup/jvisualg/backend/java/JavaBackend.java
index 6791400..e60ccf2 100644
--- a/dev.thihup.jvisualg.backend/dev.thihup.jvisualg.backend.java/src/main/java/dev/thihup/jvisualg/backend/java/JavaBackend.java
+++ b/dev.thihup.jvisualg.backend/dev.thihup.jvisualg.backend.java/src/main/java/dev/thihup/jvisualg/backend/java/JavaBackend.java
@@ -1,6 +1,5 @@
 package dev.thihup.jvisualg.backend.java;
 
-import dev.thihup.jvisualg.frontend.node.Location;
 import dev.thihup.jvisualg.frontend.node.Node;
 
 import java.util.List;
diff --git a/dev.thihup.jvisualg.frontend/src/main/java/dev/thihup/jvisualg/frontend/node/Location.java b/dev.thihup.jvisualg.frontend/src/main/java/dev/thihup/jvisualg/frontend/node/Location.java
index cd2cf4d..dbdb395 100644
--- a/dev.thihup.jvisualg.frontend/src/main/java/dev/thihup/jvisualg/frontend/node/Location.java
+++ b/dev.thihup.jvisualg.frontend/src/main/java/dev/thihup/jvisualg/frontend/node/Location.java
@@ -1,7 +1,5 @@
 package dev.thihup.jvisualg.frontend.node;
 
-import org.antlr.v4.runtime.ParserRuleContext;
-
 public record Location(
     int startLine,
     int startColumn,
diff --git a/dev.thihup.jvisualg.frontend/src/test/java/dev/thihup/jvisualg/frontend/MainTest.java b/dev.thihup.jvisualg.frontend/src/test/java/dev/thihup/jvisualg/frontend/MainTest.java
index 97b8a1d..aff81f7 100644
--- a/dev.thihup.jvisualg.frontend/src/test/java/dev/thihup/jvisualg/frontend/MainTest.java
+++ b/dev.thihup.jvisualg.frontend/src/test/java/dev/thihup/jvisualg/frontend/MainTest.java
@@ -1,13 +1,10 @@
 package dev.thihup.jvisualg.frontend;
 
-import dev.thihup.jvisualg.frontend.node.Node;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.MethodSource;
 
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.List;
-import java.util.function.Function;
 import java.util.stream.Stream;
 
 class MainTest {
diff --git a/dev.thihup.jvisualg.ide/src/main/java/dev/thihup/jvisualg/ide/Main.java b/dev.thihup.jvisualg.ide/src/main/java/dev/thihup/jvisualg/ide/Main.java
index f21fe8d..30147ce 100644
--- a/dev.thihup.jvisualg.ide/src/main/java/dev/thihup/jvisualg/ide/Main.java
+++ b/dev.thihup.jvisualg.ide/src/main/java/dev/thihup/jvisualg/ide/Main.java
@@ -19,8 +19,6 @@
 import org.eclipse.lsp4j.*;
 import org.eclipse.lsp4j.debug.InitializeRequestArguments;
 import org.eclipse.lsp4j.debug.OutputEventArguments;
-import org.eclipse.lsp4j.debug.SetBreakpointsArguments;
-import org.eclipse.lsp4j.debug.SourceBreakpoint;
 import org.eclipse.lsp4j.debug.launch.DSPLauncher;
 import org.eclipse.lsp4j.debug.services.IDebugProtocolServer;
 import org.eclipse.lsp4j.jsonrpc.Launcher;
diff --git a/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/DAPServer.java b/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/DAPServer.java
index ee7fb1f..dab3107 100644
--- a/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/DAPServer.java
+++ b/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/DAPServer.java
@@ -4,7 +4,6 @@
 import dev.thihup.jvisualg.frontend.Main;
 import dev.thihup.jvisualg.frontend.node.Location;
 import org.eclipse.lsp4j.debug.*;
-import org.eclipse.lsp4j.debug.services.IDebugProtocolClient;
 import org.eclipse.lsp4j.debug.services.IDebugProtocolServer;
 
 import java.io.*;
diff --git a/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/Interpreter.java b/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/Interpreter.java
index 4aa6ffa..e0e172b 100644
--- a/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/Interpreter.java
+++ b/dev.thihup.jvisualg.interpreter/src/main/java/dev/thihup/jvisualg/interpreter/Interpreter.java
@@ -1,10 +1,7 @@
 package dev.thihup.jvisualg.interpreter;
 
-import dev.thihup.jvisualg.frontend.ASTResult;
-import dev.thihup.jvisualg.frontend.Main;
 import dev.thihup.jvisualg.frontend.node.Location;
 import dev.thihup.jvisualg.frontend.node.Node;
-import org.antlr.v4.runtime.misc.Pair;
 
 import java.io.*;
 import java.math.RoundingMode;
diff --git a/dev.thihup.jvisualg.interpreter/src/test/java/dev/thihup/jvisualg/interpreter/InterpreterTest.java b/dev.thihup.jvisualg.interpreter/src/test/java/dev/thihup/jvisualg/interpreter/InterpreterTest.java
index c0d4135..23dd042 100644
--- a/dev.thihup.jvisualg.interpreter/src/test/java/dev/thihup/jvisualg/interpreter/InterpreterTest.java
+++ b/dev.thihup.jvisualg.interpreter/src/test/java/dev/thihup/jvisualg/interpreter/InterpreterTest.java
@@ -2,11 +2,9 @@
 
 import dev.thihup.jvisualg.frontend.Main;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.EnumSource;
 
 import java.io.*;
-import java.math.RoundingMode;
+import java.util.concurrent.locks.ReentrantLock;
 
 import static org.junit.jupiter.api.Assertions.*;
 
@@ -14,7 +12,7 @@ class InterpreterTest {
     @Test
     void test() {
         StringWriter stringWriter = new StringWriter();
-        new Interpreter(Reader.nullReader(), stringWriter)
+        new Interpreter(Reader.nullReader(), stringWriter, new ReentrantLock())
             .run(Main.buildAST(new ByteArrayInputStream("""
                 algoritmo "Teste"
                 var
@@ -443,7 +441,7 @@ public int read(char[] cbuf, int off, int len) throws IOException {
             }
         };
 
-        new Interpreter(stringReader, stringWriter)
+        new Interpreter(stringReader, stringWriter, new ReentrantLock())
                 .run(Main.buildAST(new ByteArrayInputStream("""
                 algoritmo "Teste"
                 var