--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/gov/nasa/jpf/jvm/bytecode/IINC.java	Fri Jan 23 10:14:01 2015 -0800
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014, United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ *
+ * The Java Pathfinder core (jpf-core) platform is licensed under the
+ * Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0. 
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and 
+ * limitations under the License.
+ */
+package gov.nasa.jpf.jvm.bytecode;
+
+import gov.nasa.jpf.vm.Instruction;
+import gov.nasa.jpf.vm.StackFrame;
+import gov.nasa.jpf.vm.ThreadInfo;
+
+
+/**
+ * Increment local variable by constant
+ * No change
+ */
+public class IINC extends Instruction implements JVMInstruction {
+
+  protected int index;
+  protected int increment;
+
+  public IINC(int localVarIndex, int increment) {
+    this.index = localVarIndex;
+    this.increment = increment;
+  }
+
+  @Override
+  public Instruction execute(ThreadInfo ti) {
+    StackFrame frame = ti.getModifiableTopFrame();
+
+    int v = frame.getLocalVariable(index);
+    v += increment;
+
+    frame.setLocalVariable(index, v, false);
+
+    return getNext(ti);
+  }
+
+  @Override
+  public int getLength() {
+    return 3; // opcode, index, const
+  }
+
+  @Override
+  public int getByteCode() {
+    return 0x84; // ?? wide
+  }
+
+  @Override
+  public void accept(JVMInstructionVisitor insVisitor) {
+    insVisitor.visit(this);
+  }
+
+  public int getIndex() {
+    return index;
+  }
+
+  public int getIncrement() {
+    return increment;
+  }
+
+  @Override
+  public String toPostExecString() {
+    return "iinc " + index + ' ' + increment;
+  }
+}