diff --git a/guava/pom.xml b/guava/pom.xml
index 124ffe1c9162..f06ceb95767b 100644
--- a/guava/pom.xml
+++ b/guava/pom.xml
@@ -91,7 +91,7 @@
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker</artifactId>
-      <version>3.34.0-eisop1</version>
+      <version>3.42.0-eisop5</version>
     </dependency>
   </dependencies>
   <build>
diff --git a/guava/src/com/google/common/base/Preconditions.java b/guava/src/com/google/common/base/Preconditions.java
index 9f9e6e176ca4..9205fcbee305 100644
--- a/guava/src/com/google/common/base/Preconditions.java
+++ b/guava/src/com/google/common/base/Preconditions.java
@@ -23,6 +23,7 @@
 import org.checkerframework.checker.index.qual.NonNegative;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.dataflow.qual.AssertMethod;
 import org.checkerframework.dataflow.qual.Pure;
 import org.checkerframework.framework.qual.AnnotatedFor;
 
@@ -132,6 +133,7 @@ private Preconditions() {}
    * @param expression a boolean expression
    * @throws IllegalArgumentException if {@code expression} is false
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean expression) {
     if (!expression) {
@@ -147,6 +149,7 @@ public static void checkArgument(boolean expression) {
    *     string using {@link String#valueOf(Object)}
    * @throws IllegalArgumentException if {@code expression} is false
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean expression, @CheckForNull Object errorMessage) {
     if (!expression) {
@@ -167,6 +170,7 @@ public static void checkArgument(boolean expression, @CheckForNull Object errorM
    *     are converted to strings using {@link String#valueOf(Object)}.
    * @throws IllegalArgumentException if {@code expression} is false
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean expression,
@@ -184,6 +188,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, char p1) {
     if (!b) {
@@ -198,6 +203,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, char p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, int p1) {
     if (!b) {
@@ -212,6 +218,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, int p1)
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, long p1) {
     if (!b) {
@@ -226,6 +233,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, long p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1) {
@@ -241,6 +249,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, char p1, char p2) {
     if (!b) {
@@ -255,6 +264,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, char p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, char p1, int p2) {
     if (!b) {
@@ -269,6 +279,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, char p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, char p1, long p2) {
     if (!b) {
@@ -283,6 +294,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, char p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, char p1, @CheckForNull Object p2) {
@@ -298,6 +310,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, int p1, char p2) {
     if (!b) {
@@ -312,6 +325,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, int p1,
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, int p1, int p2) {
     if (!b) {
@@ -326,6 +340,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, int p1,
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, int p1, long p2) {
     if (!b) {
@@ -340,6 +355,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, int p1,
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, int p1, @CheckForNull Object p2) {
@@ -355,6 +371,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, long p1, char p2) {
     if (!b) {
@@ -369,6 +386,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, long p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, long p1, int p2) {
     if (!b) {
@@ -383,6 +401,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, long p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(boolean b, String errorMessageTemplate, long p1, long p2) {
     if (!b) {
@@ -397,6 +416,7 @@ public static void checkArgument(boolean b, String errorMessageTemplate, long p1
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, long p1, @CheckForNull Object p2) {
@@ -412,6 +432,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, char p2) {
@@ -427,6 +448,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, int p2) {
@@ -442,6 +464,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, long p2) {
@@ -457,6 +480,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, @CheckForNull Object p2) {
@@ -472,6 +496,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b,
@@ -491,6 +516,7 @@ public static void checkArgument(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalArgumentException.class)
   @Pure
   public static void checkArgument(
       boolean b,
@@ -512,6 +538,8 @@ public static void checkArgument(
    * @throws IllegalStateException if {@code expression} is false
    * @see Verify#verify Verify.verify()
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean expression) {
     if (!expression) {
       throw new IllegalStateException();
@@ -528,6 +556,8 @@ public static void checkState(boolean expression) {
    * @throws IllegalStateException if {@code expression} is false
    * @see Verify#verify Verify.verify()
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean expression, @CheckForNull Object errorMessage) {
     if (!expression) {
       throw new IllegalStateException(String.valueOf(errorMessage));
@@ -549,6 +579,8 @@ public static void checkState(boolean expression, @CheckForNull Object errorMess
    * @throws IllegalStateException if {@code expression} is false
    * @see Verify#verify Verify.verify()
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean expression,
       /*
@@ -574,6 +606,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, char p1) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1));
@@ -588,6 +622,8 @@ public static void checkState(boolean b, String errorMessageTemplate, char p1) {
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, int p1) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1));
@@ -602,6 +638,8 @@ public static void checkState(boolean b, String errorMessageTemplate, int p1) {
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, long p1) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1));
@@ -616,6 +654,8 @@ public static void checkState(boolean b, String errorMessageTemplate, long p1) {
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, @CheckForNull Object p1) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1));
@@ -630,6 +670,8 @@ public static void checkState(boolean b, String errorMessageTemplate, @CheckForN
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, char p1, char p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -644,6 +686,8 @@ public static void checkState(boolean b, String errorMessageTemplate, char p1, c
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, char p1, int p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -658,6 +702,8 @@ public static void checkState(boolean b, String errorMessageTemplate, char p1, i
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, char p1, long p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -672,6 +718,8 @@ public static void checkState(boolean b, String errorMessageTemplate, char p1, l
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, char p1, @CheckForNull Object p2) {
     if (!b) {
@@ -687,6 +735,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, int p1, char p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -701,6 +751,8 @@ public static void checkState(boolean b, String errorMessageTemplate, int p1, ch
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, int p1, int p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -715,6 +767,8 @@ public static void checkState(boolean b, String errorMessageTemplate, int p1, in
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, int p1, long p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -729,6 +783,8 @@ public static void checkState(boolean b, String errorMessageTemplate, int p1, lo
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, int p1, @CheckForNull Object p2) {
     if (!b) {
@@ -744,6 +800,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, long p1, char p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -758,6 +816,8 @@ public static void checkState(boolean b, String errorMessageTemplate, long p1, c
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, long p1, int p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -772,6 +832,8 @@ public static void checkState(boolean b, String errorMessageTemplate, long p1, i
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(boolean b, String errorMessageTemplate, long p1, long p2) {
     if (!b) {
       throw new IllegalStateException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -786,6 +848,8 @@ public static void checkState(boolean b, String errorMessageTemplate, long p1, l
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, long p1, @CheckForNull Object p2) {
     if (!b) {
@@ -801,6 +865,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, char p2) {
     if (!b) {
@@ -816,6 +882,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, int p2) {
     if (!b) {
@@ -831,6 +899,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, long p2) {
     if (!b) {
@@ -846,6 +916,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b, String errorMessageTemplate, @CheckForNull Object p1, @CheckForNull Object p2) {
     if (!b) {
@@ -861,6 +933,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b,
       String errorMessageTemplate,
@@ -880,6 +954,8 @@ public static void checkState(
    *
    * @since 20.0 (varargs overload since 2.0)
    */
+  @AssertMethod(IllegalStateException.class)
+  @Pure
   public static void checkState(
       boolean b,
       String errorMessageTemplate,
diff --git a/guava/src/com/google/common/base/Verify.java b/guava/src/com/google/common/base/Verify.java
index 3e99cd8f395c..c1036d42fcba 100644
--- a/guava/src/com/google/common/base/Verify.java
+++ b/guava/src/com/google/common/base/Verify.java
@@ -21,6 +21,8 @@
 import javax.annotation.CheckForNull;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.checkerframework.checker.nullness.qual.Nullable;
+import org.checkerframework.dataflow.qual.AssertMethod;
+import org.checkerframework.dataflow.qual.Pure;
 
 /**
  * Static convenience methods that serve the same purpose as Java language <a
@@ -98,6 +100,8 @@ public final class Verify {
    * @throws VerifyException if {@code expression} is {@code false}
    * @see Preconditions#checkState Preconditions.checkState()
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression) {
     if (!expression) {
       throw new VerifyException();
@@ -119,6 +123,8 @@ public static void verify(boolean expression) {
    * @throws VerifyException if {@code expression} is {@code false}
    * @see Preconditions#checkState Preconditions.checkState()
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression,
       String errorMessageTemplate,
@@ -136,6 +142,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, char p1) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1));
@@ -150,6 +158,8 @@ public static void verify(boolean expression, String errorMessageTemplate, char
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, int p1) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1));
@@ -164,6 +174,8 @@ public static void verify(boolean expression, String errorMessageTemplate, int p
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, long p1) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1));
@@ -178,6 +190,8 @@ public static void verify(boolean expression, String errorMessageTemplate, long
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, @CheckForNull Object p1) {
     if (!expression) {
@@ -193,6 +207,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, char p1, char p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -207,6 +223,8 @@ public static void verify(boolean expression, String errorMessageTemplate, char
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, int p1, char p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -221,6 +239,8 @@ public static void verify(boolean expression, String errorMessageTemplate, int p
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, long p1, char p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -235,6 +255,8 @@ public static void verify(boolean expression, String errorMessageTemplate, long
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, @CheckForNull Object p1, char p2) {
     if (!expression) {
@@ -250,6 +272,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, char p1, int p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -264,6 +288,8 @@ public static void verify(boolean expression, String errorMessageTemplate, char
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, int p1, int p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -278,6 +304,8 @@ public static void verify(boolean expression, String errorMessageTemplate, int p
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, long p1, int p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -292,6 +320,8 @@ public static void verify(boolean expression, String errorMessageTemplate, long
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, @CheckForNull Object p1, int p2) {
     if (!expression) {
@@ -307,6 +337,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, char p1, long p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -321,6 +353,8 @@ public static void verify(boolean expression, String errorMessageTemplate, char
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, int p1, long p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -335,6 +369,8 @@ public static void verify(boolean expression, String errorMessageTemplate, int p
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(boolean expression, String errorMessageTemplate, long p1, long p2) {
     if (!expression) {
       throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
@@ -349,6 +385,8 @@ public static void verify(boolean expression, String errorMessageTemplate, long
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, @CheckForNull Object p1, long p2) {
     if (!expression) {
@@ -364,6 +402,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, char p1, @CheckForNull Object p2) {
     if (!expression) {
@@ -379,6 +419,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, int p1, @CheckForNull Object p2) {
     if (!expression) {
@@ -394,6 +436,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression, String errorMessageTemplate, long p1, @CheckForNull Object p2) {
     if (!expression) {
@@ -409,6 +453,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression,
       String errorMessageTemplate,
@@ -427,6 +473,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression,
       String errorMessageTemplate,
@@ -446,6 +494,8 @@ public static void verify(
    *
    * @since 23.1 (varargs overload since 17.0)
    */
+  @AssertMethod(VerifyException.class)
+  @Pure
   public static void verify(
       boolean expression,
       String errorMessageTemplate,
diff --git a/guava/src/com/google/common/io/ByteSource.java b/guava/src/com/google/common/io/ByteSource.java
index 594e14687175..5e4fd4171fbb 100644
--- a/guava/src/com/google/common/io/ByteSource.java
+++ b/guava/src/com/google/common/io/ByteSource.java
@@ -558,7 +558,11 @@ public boolean isEmpty() throws IOException {
     }
 
     @Override
-    @SuppressWarnings("value:return") // off is at most equal to unslicedSize and length is non-negative
+    @SuppressWarnings({
+        // off is at most equal to unslicedSize and length is non-negative.
+        "value:return",
+        // poly + inference problem.
+        "type.arguments.not.inferred"})
     public Optional<@NonNegative Long> sizeIfKnown() {
       Optional<@NonNegative Long> optionalUnslicedSize = ByteSource.this.sizeIfKnown();
       if (optionalUnslicedSize.isPresent()) {
@@ -708,7 +712,7 @@ public boolean isEmpty() throws IOException {
     }
 
     @Override
-    @SuppressWarnings("value:return") // Long.MAX_VALUE is non-negative
+    @SuppressWarnings("value:type.arguments.not.inferred") // Long.MAX_VALUE is non-negative
     public Optional<@NonNegative Long> sizeIfKnown() {
       if (!(sources instanceof Collection)) {
         // Infinite Iterables can cause problems here. Of course, it's true that most of the other
diff --git a/pom.xml b/pom.xml
index 9a977e781694..adf495475a8c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,7 +15,7 @@
     <!-- Override this with -Dtest.include="**/SomeTest.java" on the CLI -->
     <test.include>%regex[.*.class]</test.include>
     <truth.version>1.1.2</truth.version>
-    <checker-framework.version>3.34.0-eisop1</checker-framework.version>
+    <checker-framework.version>3.42.0-eisop5</checker-framework.version>
     <animal.sniffer.version>1.20</animal.sniffer.version>
     <maven-javadoc-plugin.version>3.1.0</maven-javadoc-plugin.version>
     <!-- Empty for all JDKs but 9-12 -->
@@ -255,6 +255,14 @@
       <url>scp://dummy.server/dontinstall/usestaging</url>
     </site>
   </distributionManagement>
+  <repositories>
+    <repository>
+      <id>snapshots-repo</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+      <releases><enabled>false</enabled></releases>
+      <snapshots><enabled>true</enabled></snapshots>
+    </repository>
+  </repositories>
   <dependencyManagement>
     <dependencies>
       <dependency>