diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ba3576c0..b9e0622e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,10 +7,7 @@ stages:
     - build
     - WIDEIO
     - DDR3
-
-cache:
-    paths:
-        - build/
+    - Coverage
 
 build:
     stage: build
@@ -22,7 +19,27 @@ build:
         - cd build
         - qmake ../DRAMSys/DRAMSys.pro
         - make -j4
-    
+        - find . -name "*.o" -type f -delete
+    cache:
+        key: build
+        paths:
+            - build/
+        policy: push
+        
+coverage:
+    stage: Coverage
+    coverage: '/Total:\|(\d+\.?\d+\%)/'
+    script:
+        # delete all empty files since they produce errors 
+        - find coverage -size 0 -type f -delete
+        - ls coverage/ -lah
+        - lcov `find coverage -type f -exec echo "-a {}" \;` -o coverage/final.out
+        - lcov --list coverage/final.out
+    artifacts:
+        paths:
+            - coverage/final.out
+           
+
 include:
     - '/DRAMSys/tests/DDR3/ci.yml'
     - '/DRAMSys/tests/WIDEIO/ci.yml'
diff --git a/DRAMSys/library/library.pro b/DRAMSys/library/library.pro
index 84267536..58d3037b 100644
--- a/DRAMSys/library/library.pro
+++ b/DRAMSys/library/library.pro
@@ -58,11 +58,15 @@ DEFINES += SC_INCLUDE_DYNAMIC_PROCESSES
 
 unix:!macx {
         QMAKE_CXXFLAGS += -std=c++11 -O0 -g
+        QMAKE_CXXFLAGS += -fprofile-arcs -ftest-coverage -fPIC -O0
+        QMAKE_LFLAGS += -lgcov --coverage
 }
 
 macx: {
         CONFIG += c++11
         QMAKE_CXXFLAGS += -std=c++0x -stdlib=libc++ -O0 -g
+        QMAKE_CXXFLAGS += --coverage
+        QMAKE_LFLAGS += --coverage
 }
 
 QMAKE_CXXFLAGS += -isystem $${systemc_home}/include
diff --git a/DRAMSys/simulator/simulator.pro b/DRAMSys/simulator/simulator.pro
index b5b297cf..dd592f3d 100644
--- a/DRAMSys/simulator/simulator.pro
+++ b/DRAMSys/simulator/simulator.pro
@@ -29,11 +29,15 @@ DEFINES += SC_INCLUDE_DYNAMIC_PROCESSES
 
 unix:!macx {
         QMAKE_CXXFLAGS += -std=c++11 -O0 -g
+        QMAKE_CXXFLAGS += -fprofile-arcs -ftest-coverage -fPIC -O0
+        QMAKE_LFLAGS += -lgcov --coverage
 }
 
 macx: {
         CONFIG += c++11
         QMAKE_CXXFLAGS += -std=c++0x -stdlib=libc++ -O0 -g
+        QMAKE_CXXFLAGS += --coverage
+        QMAKE_LFLAGS += --coverage
 }
 
 INCLUDEPATH += ../library/src/simulation/
diff --git a/DRAMSys/tests/DDR3/ci.yml b/DRAMSys/tests/DDR3/ci.yml
index 06cdadfa..b92199d0 100644
--- a/DRAMSys/tests/DDR3/ci.yml
+++ b/DRAMSys/tests/DDR3/ci.yml
@@ -10,9 +10,20 @@ example_ddr3:
         - perl -e 'if(`sqldiff ../../DRAMSys/tests/DDR3/expected/ddr3-example_ddr3_ch0.tdb ddr3-example_ddr3_ch0.tdb` eq "") {exit(0)} else {exit(-1)}'
         - cd ../traceAnalyzer
         - python3 ../../DRAMSys/traceAnalyzer/scripts/tests.py ../simulator/ddr3-example_ddr3_ch0.tdb | if ! grep "failed"; then exit 0; else exit 1; fi
+        # Run Code Coverage
+        - mkdir -p ${CI_PROJECT_DIR}/coverage
+        - lcov -q -c -d ${CI_PROJECT_DIR}/build/ -o ${CI_PROJECT_DIR}/coverage/${CI_JOB_NAME}.out
+ 
+    cache:
+        key: build
+        paths:
+            - build/
+        policy: pull
+    
     artifacts:
         paths:
           - build/simulator/ddr3-example_ddr3_ch0.tdb
+          - coverage/${CI_JOB_NAME}.out
         expire_in: 2 days
 
 # Testing Reordering with FR_FCFS Scheduling Algorithm:
@@ -27,12 +38,22 @@ fr_fcfs:
         - perl -e 'if(`sqldiff ../../DRAMSys/tests/DDR3/expected/ddr3-fr_fcfs_ddr3_ch0.tdb ddr3-fr_fcfs_ddr3_ch0.tdb` eq "") {exit(0)} else {exit(-1)}'
         - cd ../traceAnalyzer
         - python3 ../../DRAMSys/traceAnalyzer/scripts/tests.py ../simulator/ddr3-fr_fcfs_ddr3_ch0.tdb | if ! grep "failed"; then exit 0; else exit 1; fi
+        # Run Code Coverage
+        - mkdir -p ${CI_PROJECT_DIR}/coverage
+        - lcov -q -c -d ${CI_PROJECT_DIR}/build/ -o ${CI_PROJECT_DIR}/coverage/${CI_JOB_NAME}.out
+
+    cache:
+        key: build
+        paths:
+            - build/
+        policy: pull
 
     allow_failure: true # TODO should be removed after first tests
 
     artifacts:
         paths:
           - build/simulator/ddr3-fr_fcfs_ddr3_ch0.tdb
+          - coverage/${CI_JOB_NAME}.out
         expire_in: 2 days
 
 # Testing with TLM Protocol Cchecker
@@ -40,5 +61,20 @@ protocol_checker:
     stage: DDR3
     script:
         - cd build/simulator
-        - ./DRAMSys ../../DRAMSys/tests/DDR3/simulations/ddr3-protocol_checker.xml ../../DRAMSys/tests/DDR3/
+        - ./DRAMSys ../../DRAMSys/tests/DDR3/simulations/ddr3-protocol_checker.xml ../../DRAMSys/tests/DDR3/ > output.txt
         - echo "TODO"
+        - ls -lah
+        # Run Code Coverage
+        - mkdir -p ${CI_PROJECT_DIR}/coverage
+        - lcov -q -c -d ${CI_PROJECT_DIR}/build/ -o ${CI_PROJECT_DIR}/coverage/${CI_JOB_NAME}.out
+
+    cache:
+        key: build
+        paths:
+            - build/
+        policy: pull
+
+    artifacts:
+        paths:
+            - coverage/${CI_JOB_NAME}.out
+        expire_in: 2 days
diff --git a/DRAMSys/tests/WIDEIO/ci.yml b/DRAMSys/tests/WIDEIO/ci.yml
index 76ca5555..7fc1ee7b 100644
--- a/DRAMSys/tests/WIDEIO/ci.yml
+++ b/DRAMSys/tests/WIDEIO/ci.yml
@@ -15,7 +15,16 @@ example_wideio:
         - python3 ../../DRAMSys/traceAnalyzer/scripts/tests.py ../simulator/wideio-example_wideio_ch1.tdb | if ! grep "failed"; then exit 0; else exit 1; fi
         - python3 ../../DRAMSys/traceAnalyzer/scripts/tests.py ../simulator/wideio-example_wideio_ch2.tdb | if ! grep "failed"; then exit 0; else exit 1; fi
         - python3 ../../DRAMSys/traceAnalyzer/scripts/tests.py ../simulator/wideio-example_wideio_ch3.tdb | if ! grep "failed"; then exit 0; else exit 1; fi
+        # Run Code Coverage
+        - mkdir -p ${CI_PROJECT_DIR}/coverage
+        - lcov -q -c -d ${CI_PROJECT_DIR}/build/ -o ${CI_PROJECT_DIR}/coverage/${CI_JOB_NAME}.out
 
+    cache:
+        key: build
+        paths:
+            - build/
+        policy: pull
+    
     allow_failure: true # TODO: should be removed once the problems are fixed!
 
     artifacts:
@@ -24,5 +33,6 @@ example_wideio:
           - build/simulator/wideio-example_wideio_ch1.tdb
           - build/simulator/wideio-example_wideio_ch2.tdb
           - build/simulator/wideio-example_wideio_ch3.tdb
+          - coverage/${CI_JOB_NAME}.out
         expire_in: 2 days
 
diff --git a/README.md b/README.md
index 04a58785..3fe92431 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ framework that consists of models reflecting the DRAM functionality, power
 consumption, temperature behaviour and retention time errors.
 
 Pipeline Status: [![pipeline status](https://git.eit.uni-kl.de/ems/astdm/dram.sys/badges/master/pipeline.svg)](https://git.eit.uni-kl.de/ems/astdm/dram.sys/commits/master)
-
+[![Coverage report](https://git.eit.uni-kl.de/ems/astdm/dram.sys/badges/master/coverage.svg?job=coverage)](https://git.eit.uni-kl.de/ems/astdm/dram.sys/commits/master)
 ## Basic Setup
 
 Open a terminal window, go to your home directory, create a directory for your