/*
 * Copyright (C) 2015, United States Government, as represented by the 
 * Administrator of the National Aeronautics and Space Administration.
 * All rights reserved.
 * 
 * The PSYCO: A Predicate-based Symbolic Compositional Reasoning environment 
 * 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.jdart.bytecode;

import gov.nasa.jpf.constraints.api.Expression;
import gov.nasa.jpf.constraints.expressions.Constant;
import gov.nasa.jpf.constraints.expressions.NumericCompound;
import gov.nasa.jpf.constraints.expressions.NumericOperator;
import gov.nasa.jpf.constraints.types.BuiltinTypes;
import gov.nasa.jpf.jdart.ConcolicInstructionFactory;
import gov.nasa.jpf.jdart.ConcolicUtil;
import gov.nasa.jpf.jdart.ConcolicUtil.Pair;
import gov.nasa.jpf.vm.Instruction;
import gov.nasa.jpf.vm.StackFrame;
import gov.nasa.jpf.vm.ThreadInfo;

public class IINC extends gov.nasa.jpf.jvm.bytecode.IINC {

  private final Constant symbolicInc;

  public IINC(int localVarIndex, int incConstant) {
    super(localVarIndex, incConstant);
    this.symbolicInc = Constant.create(BuiltinTypes.SINT32, incConstant);
  }

  @Override
  public Instruction execute(ThreadInfo ti) {
    StackFrame sf = ti.getTopFrame();
    if (sf.getLocalAttr(index) == null) {
      super.execute(ti);
    }

    Pair<Integer> localAttr = ConcolicUtil.getLocalAttrInt(sf, index);

    Pair<Integer> updatedAttr = new Pair<>(
            localAttr.conc + increment,
            NumericCompound.create(
                    localAttr.symb.requireAs(BuiltinTypes.SINT32),
                    NumericOperator.PLUS,
                    symbolicInc));

    ConcolicUtil.setLocalAttrInt(sf, index, updatedAttr);

    if (ConcolicInstructionFactory.DEBUG) {
      ConcolicInstructionFactory.logger.finest("IINC " + sf.getLocalAttr(index));
    }

    return getNext(ti);
  }
}

@@ -1780,24 +1780,31 @@
 ll) %7B%0A      
+return 
 super.execut

Fix IINC issue #24