diff --git a/utbot-core/src/main/kotlin/org/utbot/common/PathUtil.kt b/utbot-core/src/main/kotlin/org/utbot/common/PathUtil.kt
index 3f5f0070e8..cad7603e2a 100644
--- a/utbot-core/src/main/kotlin/org/utbot/common/PathUtil.kt
+++ b/utbot-core/src/main/kotlin/org/utbot/common/PathUtil.kt
@@ -7,14 +7,14 @@ import java.nio.file.Paths
 object PathUtil {
 
     /**
-     * Creates a Path from the String
+     * Creates a Path from the String.
      */
     fun String.toPath(): Path = Paths.get(this)
 
     /**
-     * Finds a path for the [other] relative to the [root] if it is possible
+     * Finds a path for the [other] relative to the [root] if it is possible.
      *
-     * Example: safeRelativize("C:/project/", "C:/project/src/Main.java") = "src/Main.java"
+     * Example: safeRelativize("C:/project/", "C:/project/src/Main.java") = "src/Main.java".
      */
     fun safeRelativize(root: String?, other: String?): String? {
         if (root == null || other == null)
@@ -28,9 +28,9 @@ object PathUtil {
     }
 
     /**
-     * Removes class fully qualified name from absolute path to the file if it is possible
+     * Removes class fully qualified name from absolute path to the file if it is possible.
      *
-     * Example: removeClassFqnFromPath("C:/project/src/com/Main.java", "com.Main") = "C:/project/src/"
+     * Example: removeClassFqnFromPath("C:/project/src/com/Main.java", "com.Main") = "C:/project/src/".
      */
     fun removeClassFqnFromPath(sourceAbsolutePath: String?, classFqn: String?): String? {
         if (sourceAbsolutePath == null || classFqn == null)
@@ -48,9 +48,9 @@ object PathUtil {
     }
 
     /**
-     * Resolves `pathToResolve` against `absolutePath` and checks if a resolved path exists
+     * Resolves [toResolve] against [absolute] and checks if a resolved path exists.
      *
-     * Example: resolveIfExists("C:/project/src/", "Main.java") = "C:/project/src/Main.java"
+     * Example: resolveIfExists("C:/project/src/", "Main.java") = "C:/project/src/Main.java".
      */
     fun resolveIfExists(absolute: String, toResolve: String): String? {
         val absolutePath = absolute.toPath()
@@ -64,19 +64,19 @@ object PathUtil {
     }
 
     /**
-     * Replaces '\\' in the [path] with '/'
+     * Replaces '\\' in the [path] with '/'.
      */
     fun replaceSeparator(path: String): String =
         path.replace('\\', '/')
 
     /**
-     * Replaces '.' in the [classFqn] with '/'
+     * Replaces '.' in the [classFqn] with '/'.
      */
     fun classFqnToPath(classFqn: String): String =
         classFqn.replace('.', '/')
 
     /**
-     * Returns a URL to represent this path
+     * Returns a URL to represent this path.
      */
     fun Path.toURL(): URL =
         this.toUri().toURL()
@@ -88,7 +88,7 @@ object PathUtil {
         """<a href="file:///$filePath">${fileName}</a>"""
 
     /**
-     * Returns the extension of this file (including the dot)
+     * Returns the extension of this file (including the dot).
      */
     val Path.fileExtension: String
         get() = "." + this.toFile().extension
diff --git a/utbot-framework/src/main/kotlin/org/utbot/sarif/DataClasses.kt b/utbot-framework/src/main/kotlin/org/utbot/sarif/DataClasses.kt
index 1109f46d89..1a6aae7e8e 100644
--- a/utbot-framework/src/main/kotlin/org/utbot/sarif/DataClasses.kt
+++ b/utbot-framework/src/main/kotlin/org/utbot/sarif/DataClasses.kt
@@ -142,12 +142,27 @@ data class SarifArtifact(
     val uriBaseId: String = "%SRCROOT%"
 )
 
+// all fields should be one-based
 data class SarifRegion(
     val startLine: Int,
     val endLine: Int? = null,
     val startColumn: Int? = null,
     val endColumn: Int? = null
-)
+) {
+    companion object {
+        /**
+         * Makes [startColumn] the first non-whitespace character in [startLine] in the [text].
+         * If the [text] contains less than [startLine] lines, [startColumn] == null.
+         */
+        fun withStartLine(text: String, startLine: Int): SarifRegion {
+            val neededLine = text.split('\n').getOrNull(startLine - 1) // to zero-based
+            val startColumn = neededLine?.let {
+                neededLine.takeWhile { it.toString().isBlank() }.length + 1 // to one-based
+            }
+            return SarifRegion(startLine = startLine, startColumn = startColumn)
+        }
+    }
+}
 
 // related locations
 
diff --git a/utbot-framework/src/main/kotlin/org/utbot/sarif/SarifReport.kt b/utbot-framework/src/main/kotlin/org/utbot/sarif/SarifReport.kt
index 286476b075..de414528a4 100644
--- a/utbot-framework/src/main/kotlin/org/utbot/sarif/SarifReport.kt
+++ b/utbot-framework/src/main/kotlin/org/utbot/sarif/SarifReport.kt
@@ -144,9 +144,9 @@ class SarifReport(
         if (classFqn == null)
             return listOf()
         val sourceRelativePath = sourceFinding.getSourceRelativePath(classFqn)
-        val sourceRegion = SarifRegion(
-            startLine = extractLineNumber(utExecution) ?: defaultLineNumber
-        )
+        val startLine = extractLineNumber(utExecution) ?: defaultLineNumber
+        val sourceCode = sourceFinding.getSourceFile(classFqn)?.readText() ?: ""
+        val sourceRegion = SarifRegion.withStartLine(sourceCode, startLine)
         return listOf(
             SarifPhysicalLocationWrapper(
                 SarifPhysicalLocation(SarifArtifact(sourceRelativePath), sourceRegion)
@@ -155,14 +155,13 @@ class SarifReport(
     }
 
     private fun getRelatedLocations(utExecution: UtExecution): List<SarifRelatedPhysicalLocationWrapper> {
-        val lineNumber = generatedTestsCode.split('\n').indexOfFirst { line ->
-            utExecution.testMethodName?.let { testMethodName ->
-                line.contains(testMethodName)
-            } ?: false
-        }
-        val sourceRegion = SarifRegion(
-            startLine = if (lineNumber != -1) lineNumber + 1 else defaultLineNumber
-        )
+        val startLine = utExecution.testMethodName?.let { testMethodName ->
+            val neededLine = generatedTestsCode.split('\n').indexOfFirst { line ->
+                line.contains("$testMethodName(")
+            }
+            if (neededLine == -1) null else neededLine + 1 // to one-based
+        } ?: defaultLineNumber
+        val sourceRegion = SarifRegion.withStartLine(generatedTestsCode, startLine)
         return listOf(
             SarifRelatedPhysicalLocationWrapper(
                 relatedLocationId,
@@ -228,6 +227,7 @@ class SarifReport(
             return null
         val extension = stackTraceElement.fileName?.toPath()?.fileExtension
         val relativePath = sourceFinding.getSourceRelativePath(stackTraceElement.className, extension)
+        val sourceCode = sourceFinding.getSourceFile(stackTraceElement.className, extension)?.readText() ?: ""
         return SarifFlowLocationWrapper(
             SarifFlowLocation(
                 message = Message(
@@ -235,7 +235,7 @@ class SarifReport(
                 ),
                 physicalLocation = SarifPhysicalLocation(
                     SarifArtifact(relativePath),
-                    SarifRegion(lineNumber)
+                    SarifRegion.withStartLine(sourceCode, lineNumber)
                 )
             )
         )
@@ -252,21 +252,36 @@ class SarifReport(
         }
         if (testMethodStartsAt == -1)
             return null
+        /**
+         * ...
+         * public void testMethodName() { // <- `testMethodStartsAt`
+         *     ...
+         *     className.methodName(...) // <- needed `startLine`
+         *     ...
+         * }
+         */
 
         // searching needed method call
         val publicMethodCallPattern = "$methodName("
         val privateMethodCallPattern = Regex("""$methodName.*\.invoke\(""") // using reflection
-        val methodCallLineNumber = testsBodyLines
+        val methodCallShiftInTestMethod = testsBodyLines
             .drop(testMethodStartsAt + 1) // for search after it
             .indexOfFirst { line ->
                 line.contains(publicMethodCallPattern) || line.contains(privateMethodCallPattern)
             }
-        if (methodCallLineNumber == -1)
+        if (methodCallShiftInTestMethod == -1)
             return null
 
+        // `startLine` consists of:
+        //     shift to the testMethod call (+ testMethodStartsAt)
+        //     the line with testMethodName (+ 1)
+        //     shift to the method call     (+ methodCallShiftInTestMethod)
+        //     to one-based                 (+ 1)
+        val startLine = testMethodStartsAt + 1 + methodCallShiftInTestMethod + 1
+
         return SarifPhysicalLocation(
             SarifArtifact(sourceFinding.testsRelativePath),
-            SarifRegion(startLine = methodCallLineNumber + 1 + testMethodStartsAt + 1)
+            SarifRegion.withStartLine(generatedTestsCode, startLine)
         )
     }
 
diff --git a/utbot-framework/src/main/kotlin/org/utbot/sarif/SourceFindingStrategy.kt b/utbot-framework/src/main/kotlin/org/utbot/sarif/SourceFindingStrategy.kt
index 88a87466ee..b2ef8b82df 100644
--- a/utbot-framework/src/main/kotlin/org/utbot/sarif/SourceFindingStrategy.kt
+++ b/utbot-framework/src/main/kotlin/org/utbot/sarif/SourceFindingStrategy.kt
@@ -4,6 +4,7 @@ import org.utbot.common.PathUtil
 import org.utbot.common.PathUtil.classFqnToPath
 import org.utbot.common.PathUtil.fileExtension
 import org.utbot.common.PathUtil.toPath
+import java.io.File
 
 /**
  * Defines the search strategy for the source files. Used when creating a SARIF report.
@@ -20,6 +21,11 @@ abstract class SourceFindingStrategy {
      * Returns a path to the source file by given [classFqn].
      */
     abstract fun getSourceRelativePath(classFqn: String, extension: String? = null): String
+
+    /**
+     * Returns the source file by given [classFqn].
+     */
+    abstract fun getSourceFile(classFqn: String, extension: String? = null): File?
 }
 
 /**
@@ -41,13 +47,13 @@ class SourceFindingStrategyDefault(
 ) : SourceFindingStrategy() {
 
     /**
-     * Tries to construct the relative path to tests (against `projectRootPath`) using the `testsFilePath`
+     * Tries to construct the relative path to tests (against `projectRootPath`) using the `testsFilePath`.
      */
     override val testsRelativePath =
         PathUtil.safeRelativize(projectRootPath, testsFilePath) ?: testsFilePath.toPath().fileName.toString()
 
     /**
-     * Tries to guess the relative path (against `projectRootPath`) to the source file containing the class [classFqn]
+     * Tries to guess the relative path (against `projectRootPath`) to the source file containing the class [classFqn].
      */
     override fun getSourceRelativePath(classFqn: String, extension: String?): String {
         val fileExtension = extension ?: sourceExtension
@@ -56,6 +62,16 @@ class SourceFindingStrategyDefault(
         return relativePath ?: (classFqnToPath(classFqn) + fileExtension)
     }
 
+    /**
+     * Tries to find the source file containing the class [classFqn].
+     * Returns null if the file does not exist.
+     */
+    override fun getSourceFile(classFqn: String, extension: String?): File? {
+        val fileExtension = extension ?: sourceExtension
+        val absolutePath = resolveClassFqn(sourceFilesDirectory, classFqn, fileExtension)
+        return absolutePath?.let(::File)
+    }
+
     // internal
 
     private val sourceExtension = sourceFilePath.toPath().fileExtension
@@ -64,8 +80,9 @@ class SourceFindingStrategyDefault(
         PathUtil.removeClassFqnFromPath(sourceFilePath, sourceClassFqn)
 
     /**
-     * Resolves [classFqn] against [absolutePath] and checks if a resolved path exists
-     * Example: resolveClassFqn("C:/project/src/", "com.Main") = "C:/project/src/com/Main.java"
+     * Resolves [classFqn] against [absolutePath] and checks if a resolved path exists.
+     *
+     * Example: resolveClassFqn("C:/project/src/", "com.Main") = "C:/project/src/com/Main.java".
      */
     private fun resolveClassFqn(absolutePath: String?, classFqn: String, extension: String = ".java"): String? {
         if (absolutePath == null)
diff --git a/utbot-framework/src/test/kotlin/org/utbot/sarif/SarifReportTest.kt b/utbot-framework/src/test/kotlin/org/utbot/sarif/SarifReportTest.kt
index fad4ff0334..d3430d5218 100644
--- a/utbot-framework/src/test/kotlin/org/utbot/sarif/SarifReportTest.kt
+++ b/utbot-framework/src/test/kotlin/org/utbot/sarif/SarifReportTest.kt
@@ -86,6 +86,7 @@ class SarifReportTest {
         assert(location.region.startLine == 1337)
         assert(relatedLocation.artifactLocation.uri.contains("MainTest.java"))
         assert(relatedLocation.region.startLine == 1)
+        assert(relatedLocation.region.startColumn == 1)
     }
 
     @Test
@@ -158,6 +159,7 @@ class SarifReportTest {
         }
         assert(codeFlowPhysicalLocations[0].artifactLocation.uri.contains("MainTest.java"))
         assert(codeFlowPhysicalLocations[0].region.startLine == 3)
+        assert(codeFlowPhysicalLocations[0].region.startColumn == 7)
     }
 
     @Test
@@ -181,6 +183,7 @@ class SarifReportTest {
         }
         assert(codeFlowPhysicalLocations[0].artifactLocation.uri.contains("MainTest.java"))
         assert(codeFlowPhysicalLocations[0].region.startLine == 4)
+        assert(codeFlowPhysicalLocations[0].region.startColumn == 5)
     }
 
     // internal
@@ -217,7 +220,7 @@ class SarifReportTest {
     private val generatedTestsCodeMain = """
         public void testMain_ThrowArithmeticException() {
             Main main = new Main();
-            main.main(0);
+              main.main(0); // shift for `startColumn` == 7
         }
     """.trimIndent()
 
diff --git a/utbot-gradle/src/main/kotlin/org/utbot/gradle/plugin/wrappers/SourceFindingStrategyGradle.kt b/utbot-gradle/src/main/kotlin/org/utbot/gradle/plugin/wrappers/SourceFindingStrategyGradle.kt
index e45a190a17..7f7fc5f093 100644
--- a/utbot-gradle/src/main/kotlin/org/utbot/gradle/plugin/wrappers/SourceFindingStrategyGradle.kt
+++ b/utbot-gradle/src/main/kotlin/org/utbot/gradle/plugin/wrappers/SourceFindingStrategyGradle.kt
@@ -3,6 +3,7 @@ package org.utbot.gradle.plugin.wrappers
 import org.utbot.common.PathUtil
 import org.utbot.common.PathUtil.toPath
 import org.utbot.sarif.SourceFindingStrategy
+import java.io.File
 
 /**
  * The search strategy based on the information available to the Gradle.
@@ -37,6 +38,13 @@ class SourceFindingStrategyGradle(
         } ?: defaultPath
     }
 
+    /**
+     * Finds the source file containing the class [classFqn].
+     * Returns null if the file does not exist.
+     */
+    override fun getSourceFile(classFqn: String, extension: String?): File? =
+        sourceSet.findSourceCodeFile(classFqn)
+
     // internal
 
     private val projectRootPath = sourceSet.parentProject.sarifProperties.projectRoot.absolutePath
diff --git a/utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/sarif/SourceFindingStrategyIdea.kt b/utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/sarif/SourceFindingStrategyIdea.kt
index 0c92eed139..8aba1e3158 100644
--- a/utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/sarif/SourceFindingStrategyIdea.kt
+++ b/utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/sarif/SourceFindingStrategyIdea.kt
@@ -7,6 +7,7 @@ import org.utbot.sarif.SourceFindingStrategy
 import com.intellij.psi.JavaPsiFacade
 import com.intellij.psi.PsiClass
 import org.jetbrains.kotlin.idea.search.allScope
+import java.io.File
 
 /**
  * The search strategy based on the information available to the PsiClass
@@ -29,6 +30,16 @@ class SourceFindingStrategyIdea(testClass: PsiClass) : SourceFindingStrategy() {
                 safeRelativize(project.basePath, psiClass.containingFile.virtualFile.path)
             } ?: (classFqnToPath(classFqn) + (extension ?: defaultExtension))
 
+    /**
+     * Finds the source file containing the class [classFqn].
+     * Returns null if the file does not exist.
+     */
+    override fun getSourceFile(classFqn: String, extension: String?): File? {
+        val psiClass = JavaPsiFacade.getInstance(project).findClass(classFqn, project.allScope())
+        val sourceCodeFile = psiClass?.containingFile?.virtualFile?.path?.let(::File)
+        return if (sourceCodeFile?.exists() == true) sourceCodeFile else null
+    }
+
     // internal
 
     private val project = testClass.project
diff --git a/utbot-maven/src/main/kotlin/org/utbot/maven/plugin/wrappers/SourceFindingStrategyMaven.kt b/utbot-maven/src/main/kotlin/org/utbot/maven/plugin/wrappers/SourceFindingStrategyMaven.kt
index 515aad43be..4d6e1adf1c 100644
--- a/utbot-maven/src/main/kotlin/org/utbot/maven/plugin/wrappers/SourceFindingStrategyMaven.kt
+++ b/utbot-maven/src/main/kotlin/org/utbot/maven/plugin/wrappers/SourceFindingStrategyMaven.kt
@@ -3,6 +3,7 @@ package org.utbot.maven.plugin.wrappers
 import org.utbot.common.PathUtil
 import org.utbot.common.PathUtil.toPath
 import org.utbot.sarif.SourceFindingStrategy
+import java.io.File
 
 /**
  * The search strategy based on the information available to the Maven.
@@ -37,6 +38,13 @@ class SourceFindingStrategyMaven(
         } ?: defaultPath
     }
 
+    /**
+     * Finds the source file containing the class [classFqn].
+     * Returns null if the file does not exist.
+     */
+    override fun getSourceFile(classFqn: String, extension: String?): File? =
+        mavenProjectWrapper.findSourceCodeFile(classFqn)
+
     // internal
 
     private val projectRootPath = mavenProjectWrapper.sarifProperties.projectRoot.absolutePath