diff --git a/.travis.yml b/.travis.yml
index d84137a..5eb2e84 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,8 @@ cache:
 
 before_script:
   - composer self-update
+  - composer install --dev
 
 script:
-    - ./bin/phpspec run
-    - ./bin/phpstan analyse src -l 6
+    - ./vendor/bin/phpspec run
+    - ./vendor/bin/phpstan analyse src -l 5
diff --git a/bin/php-parse b/bin/php-parse
deleted file mode 120000
index 726f634..0000000
--- a/bin/php-parse
+++ /dev/null
@@ -1 +0,0 @@
-../vendor/nikic/php-parser/bin/php-parse
\ No newline at end of file
diff --git a/bin/phpstan b/bin/phpstan
deleted file mode 120000
index a151038..0000000
--- a/bin/phpstan
+++ /dev/null
@@ -1 +0,0 @@
-../vendor/phpstan/phpstan/bin/phpstan
\ No newline at end of file
diff --git a/composer.json b/composer.json
index 2d83633..593ccb4 100644
--- a/composer.json
+++ b/composer.json
@@ -24,9 +24,6 @@
         "phpspec/phpspec": "^3.0||^4.0",
         "phpstan/phpstan": "^0.10.2"
     },
-    "config": {
-        "bin-dir": "bin"
-    },
     "autoload": {
         "psr-4": {
             "Akeneo\\CouplingDetector\\": "src/"
diff --git a/composer.lock b/composer.lock
index 6567e6f..71cce6f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -68,6 +68,50 @@
             ],
             "time": "2016-08-30T16:08:34+00:00"
         },
+        {
+            "name": "composer/xdebug-handler",
+            "version": "1.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/xdebug-handler.git",
+                "reference": "b8e9745fb9b06ea6664d8872c4505fb16df4611c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/composer/xdebug-handler/zipball/b8e9745fb9b06ea6664d8872c4505fb16df4611c",
+                "reference": "b8e9745fb9b06ea6664d8872c4505fb16df4611c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.2 || ^7.0",
+                "psr/log": "^1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Composer\\XdebugHandler\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "John Stevenson",
+                    "email": "john-stevenson@blueyonder.co.uk"
+                }
+            ],
+            "description": "Restarts a process without xdebug.",
+            "keywords": [
+                "Xdebug",
+                "performance"
+            ],
+            "time": "2018-08-31T19:07:57+00:00"
+        },
         {
             "name": "doctrine/annotations",
             "version": "v1.6.0",
@@ -192,20 +236,21 @@
         },
         {
             "name": "friendsofphp/php-cs-fixer",
-            "version": "v2.11.1",
+            "version": "v2.13.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
-                "reference": "ad94441c17b8ef096e517acccdbf3238af8a2da8"
+                "reference": "7136aa4e0c5f912e8af82383775460d906168a10"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/ad94441c17b8ef096e517acccdbf3238af8a2da8",
-                "reference": "ad94441c17b8ef096e517acccdbf3238af8a2da8",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/7136aa4e0c5f912e8af82383775460d906168a10",
+                "reference": "7136aa4e0c5f912e8af82383775460d906168a10",
                 "shasum": ""
             },
             "require": {
                 "composer/semver": "^1.4",
+                "composer/xdebug-handler": "^1.2",
                 "doctrine/annotations": "^1.2",
                 "ext-json": "*",
                 "ext-tokenizer": "*",
@@ -227,16 +272,20 @@
             "require-dev": {
                 "johnkary/phpunit-speedtrap": "^1.1 || ^2.0 || ^3.0",
                 "justinrainbow/json-schema": "^5.0",
-                "keradus/cli-executor": "^1.0",
+                "keradus/cli-executor": "^1.1",
                 "mikey179/vfsstream": "^1.6",
-                "php-coveralls/php-coveralls": "^2.0",
+                "php-coveralls/php-coveralls": "^2.1",
                 "php-cs-fixer/accessible-object": "^1.0",
-                "phpunit/phpunit": "^5.7.23 || ^6.4.3 || ^7.0",
-                "phpunitgoodpractices/traits": "^1.3.1",
-                "symfony/phpunit-bridge": "^3.2.2 || ^4.0"
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "^1.0.1",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "^1.0.1",
+                "phpunit/phpunit": "^5.7.27 || ^6.5.8 || ^7.1",
+                "phpunitgoodpractices/traits": "^1.5.1",
+                "symfony/phpunit-bridge": "^4.0"
             },
             "suggest": {
                 "ext-mbstring": "For handling non-UTF8 characters in cache signature.",
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "For IsIdenticalString constraint.",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "For XmlMatchesXsd constraint.",
                 "symfony/polyfill-mbstring": "When enabling `ext-mbstring` is not possible."
             },
             "bin": [
@@ -245,7 +294,7 @@
             "type": "application",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.11-dev"
+                    "dev-master": "2.13-dev"
                 }
             },
             "autoload": {
@@ -257,9 +306,6 @@
                     "tests/Test/AbstractIntegrationCaseFactory.php",
                     "tests/Test/AbstractIntegrationTestCase.php",
                     "tests/Test/Assert/AssertTokensTrait.php",
-                    "tests/Test/Constraint/SameStringsConstraint.php",
-                    "tests/Test/Constraint/SameStringsConstraintForV5.php",
-                    "tests/Test/Constraint/SameStringsConstraintForV7.php",
                     "tests/Test/IntegrationCase.php",
                     "tests/Test/IntegrationCaseFactory.php",
                     "tests/Test/IntegrationCaseFactoryInterface.php",
@@ -282,37 +328,33 @@
                 }
             ],
             "description": "A tool to automatically fix PHP code style",
-            "time": "2018-03-21T17:41:26+00:00"
+            "time": "2018-08-23T13:15:44+00:00"
         },
         {
             "name": "paragonie/random_compat",
-            "version": "v2.0.11",
+            "version": "v9.99.99",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/random_compat.git",
-                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8"
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/5da4d3c796c275c55f057af5a643ae297d96b4d8",
-                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.2.0"
+                "php": "^7"
             },
             "require-dev": {
-                "phpunit/phpunit": "4.*|5.*"
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
             },
             "suggest": {
                 "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
             },
             "type": "library",
-            "autoload": {
-                "files": [
-                    "lib/random.php"
-                ]
-            },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
@@ -327,10 +369,11 @@
             "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
             "keywords": [
                 "csprng",
+                "polyfill",
                 "pseudorandom",
                 "random"
             ],
-            "time": "2017-09-27T21:40:39+00:00"
+            "time": "2018-07-02T15:55:56+00:00"
         },
         {
             "name": "php-cs-fixer/diff",
@@ -383,18 +426,65 @@
             ],
             "time": "2018-02-15T16:58:55+00:00"
         },
+        {
+            "name": "psr/log",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2016-10-10T12:19:37+00:00"
+        },
         {
             "name": "symfony/console",
-            "version": "v4.0.6",
+            "version": "v4.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "555c8dbe0ae9e561740451eabdbed2cc554b6a51"
+                "reference": "dc7122fe5f6113cfaba3b3de575d31112c9aa60b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/555c8dbe0ae9e561740451eabdbed2cc554b6a51",
-                "reference": "555c8dbe0ae9e561740451eabdbed2cc554b6a51",
+                "url": "https://api.github.com/repos/symfony/console/zipball/dc7122fe5f6113cfaba3b3de575d31112c9aa60b",
+                "reference": "dc7122fe5f6113cfaba3b3de575d31112c9aa60b",
                 "shasum": ""
             },
             "require": {
@@ -414,7 +504,7 @@
                 "symfony/process": "~3.4|~4.0"
             },
             "suggest": {
-                "psr/log": "For using the console logger",
+                "psr/log-implementation": "For using the console logger",
                 "symfony/event-dispatcher": "",
                 "symfony/lock": "",
                 "symfony/process": ""
@@ -422,7 +512,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -449,20 +539,20 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2018-02-26T15:55:47+00:00"
+            "time": "2018-10-03T08:15:46+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
-            "version": "v4.0.6",
+            "version": "v4.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/event-dispatcher.git",
-                "reference": "85eaf6a8ec915487abac52e133efc4a268204428"
+                "reference": "bfb30c2ad377615a463ebbc875eba64a99f6aa3e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/85eaf6a8ec915487abac52e133efc4a268204428",
-                "reference": "85eaf6a8ec915487abac52e133efc4a268204428",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/bfb30c2ad377615a463ebbc875eba64a99f6aa3e",
+                "reference": "bfb30c2ad377615a463ebbc875eba64a99f6aa3e",
                 "shasum": ""
             },
             "require": {
@@ -485,7 +575,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -512,29 +602,30 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2018-02-14T14:11:10+00:00"
+            "time": "2018-07-26T09:10:45+00:00"
         },
         {
             "name": "symfony/filesystem",
-            "version": "v4.0.6",
+            "version": "v4.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/filesystem.git",
-                "reference": "5d2d655b2c72fc4d9bf7e9bf14f72a447b940f21"
+                "reference": "596d12b40624055c300c8b619755b748ca5cf0b5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/filesystem/zipball/5d2d655b2c72fc4d9bf7e9bf14f72a447b940f21",
-                "reference": "5d2d655b2c72fc4d9bf7e9bf14f72a447b940f21",
+                "url": "https://api.github.com/repos/symfony/filesystem/zipball/596d12b40624055c300c8b619755b748ca5cf0b5",
+                "reference": "596d12b40624055c300c8b619755b748ca5cf0b5",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1.3"
+                "php": "^7.1.3",
+                "symfony/polyfill-ctype": "~1.8"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -561,20 +652,20 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
-            "time": "2018-02-22T10:50:29+00:00"
+            "time": "2018-10-02T12:40:59+00:00"
         },
         {
             "name": "symfony/finder",
-            "version": "v4.0.6",
+            "version": "v4.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "44a796d2ecc2a16a5fc8f2956a34ee617934d55f"
+                "reference": "1f17195b44543017a9c9b2d437c670627e96ad06"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/44a796d2ecc2a16a5fc8f2956a34ee617934d55f",
-                "reference": "44a796d2ecc2a16a5fc8f2956a34ee617934d55f",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/1f17195b44543017a9c9b2d437c670627e96ad06",
+                "reference": "1f17195b44543017a9c9b2d437c670627e96ad06",
                 "shasum": ""
             },
             "require": {
@@ -583,7 +674,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -610,20 +701,20 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2018-03-05T18:28:26+00:00"
+            "time": "2018-10-03T08:47:56+00:00"
         },
         {
             "name": "symfony/options-resolver",
-            "version": "v4.0.6",
+            "version": "v4.1.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/options-resolver.git",
-                "reference": "371532a2cfe932f7a3766dd4c45364566def1dd0"
+                "reference": "40f0e40d37c1c8a762334618dea597d64bbb75ff"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/371532a2cfe932f7a3766dd4c45364566def1dd0",
-                "reference": "371532a2cfe932f7a3766dd4c45364566def1dd0",
+                "url": "https://api.github.com/repos/symfony/options-resolver/zipball/40f0e40d37c1c8a762334618dea597d64bbb75ff",
+                "reference": "40f0e40d37c1c8a762334618dea597d64bbb75ff",
                 "shasum": ""
             },
             "require": {
@@ -632,7 +723,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -664,20 +755,78 @@
                 "configuration",
                 "options"
             ],
-            "time": "2018-01-18T22:19:33+00:00"
+            "time": "2018-09-18T12:45:12+00:00"
+        },
+        {
+            "name": "symfony/polyfill-ctype",
+            "version": "v1.9.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-ctype.git",
+                "reference": "e3d826245268269cd66f8326bd8bc066687b4a19"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/e3d826245268269cd66f8326bd8bc066687b4a19",
+                "reference": "e3d826245268269cd66f8326bd8bc066687b4a19",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-ctype": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.9-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                },
+                {
+                    "name": "Gert de Pagter",
+                    "email": "BackEndTea@gmail.com"
+                }
+            ],
+            "description": "Symfony polyfill for ctype functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "ctype",
+                "polyfill",
+                "portable"
+            ],
+            "time": "2018-08-06T14:22:27+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.7.0",
+            "version": "v1.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "78be803ce01e55d3491c1397cf1c64beb9c1b63b"
+                "reference": "d0cd638f4634c16d8df4508e847f14e9e43168b8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/78be803ce01e55d3491c1397cf1c64beb9c1b63b",
-                "reference": "78be803ce01e55d3491c1397cf1c64beb9c1b63b",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/d0cd638f4634c16d8df4508e847f14e9e43168b8",
+                "reference": "d0cd638f4634c16d8df4508e847f14e9e43168b8",
                 "shasum": ""
             },
             "require": {
@@ -689,7 +838,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.7-dev"
+                    "dev-master": "1.9-dev"
                 }
             },
             "autoload": {
@@ -723,30 +872,30 @@
                 "portable",
                 "shim"
             ],
-            "time": "2018-01-30T19:27:44+00:00"
+            "time": "2018-08-06T14:22:27+00:00"
         },
         {
             "name": "symfony/polyfill-php70",
-            "version": "v1.7.0",
+            "version": "v1.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php70.git",
-                "reference": "3532bfcd8f933a7816f3a0a59682fc404776600f"
+                "reference": "1e24b0c4a56d55aaf368763a06c6d1c7d3194934"
             },
             "dist": {
                 "type": "zip",
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                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "de5f125ea39de846b90b313b2cfb031a0152d223"
+                "reference": "367e689b2fdc19965be435337b50bc8adf2746c9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/de5f125ea39de846b90b313b2cfb031a0152d223",
-                "reference": "de5f125ea39de846b90b313b2cfb031a0152d223",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/367e689b2fdc19965be435337b50bc8adf2746c9",
+                "reference": "367e689b2fdc19965be435337b50bc8adf2746c9",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1.3"
+                "php": "^7.1.3",
+                "symfony/polyfill-ctype": "~1.8"
             },
             "conflict": {
                 "symfony/console": "<3.4"
@@ -2430,7 +2489,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.0-dev"
+                    "dev-master": "4.1-dev"
                 }
             },
             "autoload": {
@@ -2457,7 +2516,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2018-02-19T20:08:53+00:00"
+            "time": "2018-10-02T16:36:10+00:00"
         },
         {
             "name": "webmozart/assert",
diff --git a/src/Console/Command/DetectCommand.php b/src/Console/Command/DetectCommand.php
index 10f744e..a73e632 100644
--- a/src/Console/Command/DetectCommand.php
+++ b/src/Console/Command/DetectCommand.php
@@ -44,7 +44,7 @@ protected function configure()
         $this
             ->setName('detect')
             ->setDefinition(
-                array(
+                [
                     new InputArgument('path', InputArgument::OPTIONAL, 'path of the project', null),
                     new InputOption(
                         'config-file',
@@ -59,11 +59,10 @@ protected function configure()
                         sprintf('Output format (%s)', implode(', ', $this->formats)),
                         $this->formats[0]
                     ),
-                )
+                ]
             )
             ->setDescription('Detect coupling rules')
-            ->setHelp($this->loadHelpContent())
-        ;
+            ->setHelp($this->loadHelpContent());
     }
 
     /**
@@ -73,22 +72,22 @@ protected function execute(InputInterface $input, OutputInterface $output)
     {
         $output->setFormatter(new OutputFormatter(true));
 
-        if (null !== $format = $input->getOption('format')) {
-            if (!in_array($format,  $this->formats)) {
+        if (null !== $format = $this->getFormatOption($input)) {
+            if (!in_array($format, $this->formats)) {
                 throw new \RuntimeException(
                     sprintf('Format "%s" is unknown. Available formats: %s.', $format, implode(', ', $this->formats))
                 );
             }
         }
 
-        if (null !== $path = $input->getArgument('path')) {
+        if (null !== $path = $this->getPathArgument($input)) {
             $filesystem = new Filesystem();
             if (!$filesystem->isAbsolutePath($path)) {
-                $path = getcwd().DIRECTORY_SEPARATOR.$path;
+                $path = getcwd() . DIRECTORY_SEPARATOR . $path;
             }
         }
 
-        if (null === $configFile = $input->getOption('config-file')) {
+        if (null === $configFile = $this->getConfigFileOption($input)) {
             $configDir = $path;
             if (is_file($path) && $dirName = pathinfo($path, PATHINFO_DIRNAME)) {
                 $configDir = $dirName;
@@ -96,7 +95,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 $configDir = getcwd();
                 // path is directory
             }
-            $configFile = $configDir.DIRECTORY_SEPARATOR.'.php_cd';
+            $configFile = $configDir . DIRECTORY_SEPARATOR . '.php_cd';
         }
 
         $config = $this->loadConfiguration($configFile);
@@ -106,7 +105,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $nodeParserResolver = new NodeParserResolver();
         $ruleChecker = new RuleChecker();
-        $eventDispatcher = $this->initEventDispatcher($output, $format, $input->getOption('verbose'));
+        $eventDispatcher = $this->initEventDispatcher($output, $format, $this->getVerboseOption($input));
         $detector = new CouplingDetector($nodeParserResolver, $ruleChecker, $eventDispatcher);
 
         $violations = $detector->detect($finder, $rules);
@@ -163,21 +162,17 @@ private function loadConfiguration($filePath)
 
     /**
      * Init the event dispatcher by attaching the output formatters.
-     *
-     * @param OutputInterface $output
-     * @param string          $formatterName
-     * @param bool            $verbose
-     *
-     * @return EventDispatcherInterface
      */
-    private function initEventDispatcher(OutputInterface $output, $formatterName, $verbose)
-    {
+    private function initEventDispatcher(
+        OutputInterface $output,
+        string $formatterName,
+        bool $verbose
+    ): EventDispatcherInterface {
         if ('dot' === $formatterName) {
             $formatter = new DotFormatter($output);
         } elseif ('pretty' === $formatterName) {
             $formatter = new PrettyFormatter($output, $verbose);
-        }
-          elseif ('simple' === $formatterName) {
+        } elseif ('simple' === $formatterName) {
             $formatter = new SimpleFormatter();
         } else {
             throw new \RuntimeException(
@@ -207,4 +202,24 @@ private function loadHelpContent(): string
 
         return $content;
     }
+
+    private function getFormatOption(InputInterface $input): ?string
+    {
+        return $input->getOption('format');
+    }
+
+    private function getPathArgument(InputInterface $input): ?string
+    {
+        return $input->getArgument('path');
+    }
+
+    private function getConfigFileOption(InputInterface $input): ?string
+    {
+        return $input->getOption('config-file');
+    }
+
+    private function getVerboseOption(InputInterface $input): bool
+    {
+        return true === $input->getOption('verbose');
+    }
 }