don't consider calls to methods with the same name as a property to be calls to accessors of that property

#KT-12813 Fixed

idea/src/org/jetbrains/kotlin/idea/search/ideaExtensions/KotlinOverridingMethodReferenceSearcher.kt

@@ -33,6 +33,7 @@ import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.load.java.getPropertyNamesCandidatesByAccessorName
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtCallableDeclaration
+import org.jetbrains.kotlin.psi.KtNamedFunction
 import org.jetbrains.kotlin.psi.KtParameter
 import org.jetbrains.kotlin.psi.KtProperty
 import org.jetbrains.kotlin.utils.ifEmpty
@@ -50,7 +51,8 @@ class KotlinOverridingMethodReferenceSearcher : MethodUsagesSearcher() {
                     .restrictToKotlinSources()
             if (searchScope === GlobalSearchScope.EMPTY_SCOPE) return@runReadActionInSmartMode
 
-            for (name in getPropertyNamesCandidatesByAccessorName(Name.identifier(method.name))) {
+            val nameCandidates = getPropertyNamesCandidatesByAccessorName(Name.identifier(method.name))
+            for (name in nameCandidates) {
                 p.optimizer.searchWord(
                         name.asString(),
                         searchScope,
@@ -93,6 +95,9 @@ class KotlinOverridingMethodReferenceSearcher : MethodUsagesSearcher() {
                     if (isWrongAccessorReference()) return true
                     lightMethods = lightMethods.filter { JvmAbi.isGetterName(it.name) == isGetter }
                 }
+                if (refElement is KtNamedFunction) {
+                    lightMethods = lightMethods.filter { it.name == method.name }
+                }
 
                 return lightMethods.all { super.processInexactReference(ref, it, method, consumer) }
             }

idea/testData/findUsages/kotlin/findPropertyUsages/kotlinPropertySameNameAsMethodUsages.0.kt

@@ -0,0 +1,16 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtProperty
+// OPTIONS: usages
+class P
+
+interface C {
+    val <caret>p: P  // set caret at "p" and try find usages
+    fun p(param: Any)
+}
+
+fun C.usageCorrect() {
+    println(p)
+}
+
+fun C.usageIncorrect() {
+    p("ok")
+}

idea/testData/findUsages/kotlin/findPropertyUsages/kotlinPropertySameNameAsMethodUsages.results.txt

@@ -0,0 +1 @@
+Value read 11 println(p)

idea/tests/org/jetbrains/kotlin/findUsages/FindUsagesTestGenerated.java

@@ -1014,6 +1014,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("kotlinPropertySameNameAsMethodUsages.0.kt")
+            public void testKotlinPropertySameNameAsMethodUsages() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findPropertyUsages/kotlinPropertySameNameAsMethodUsages.0.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("kotlinPropertyUsages.0.kt")
             public void testKotlinPropertyUsages() throws Exception {
                 String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/findPropertyUsages/kotlinPropertyUsages.0.kt");