Same RAM Error but it doesn't make that much sense in this case.

I got the same Gradle Task Error as everyone else, as not having enough RAM but It should work though.

Executing gradle command: cleanCache clean setupDecompWorkspace --refresh-dependencies
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:\Pylo\MCreator175>cd forge
C:\Pylo\MCreator175\forge>SET "JAVA_HOME=C:\Pylo\MCreator175\jdk32\"
C:\Pylo\MCreator175\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Pylo\MCreator175\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Pylo\MCreator175\forge>gradlew -Dorg.gradle.jvmargs="-Xms512m -Xmx1024m" cleanCache clean setupDecompWorkspace --refresh-dependencies 
This mapping 'snapshot_20161220' was designed for MC 1.11! Use at your own peril.
#################################################
         ForgeGradle 2.2-SNAPSHOT-eb2e450        
  https://github.com/MinecraftForge/ForgeGradle  
#################################################
               Powered by MCP unknown               
             http://modcoderpack.com             
         by: Searge, ProfMobius, Fesh0r,         
         R4wk, ZeuX, IngisKahn, bspkrs           
#################################################
:cleanCache
:clean UP-TO-DATE
:deobfCompileDummyTask
:deobfProvidedDummyTask
:getVersionJson
:extractUserdev
:extractDependencyATs SKIPPED
:extractMcpData
:extractMcpMappings
:genSrgs
:downloadClient
:downloadServer
:splitServerJar
:mergeJars
:deobfMcSRG
Applying SpecialSource...
Applying Exceptor...
:decompileMc
Error occurred during initialization of VM
Could not reserve enough space for 3145728KB object heap
:decompileMc FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':decompileMc'.
> Process 'command 'C:\Pylo\MCreator175\jdk32\bin\java.exe'' finished with non-zero exit value 1
BUILD FAILED
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Total time: 8 mins 42.896 secs
C:\Pylo\MCreator175\forge>
Task completed with return code 0 in 531493 milliseconds

The only reason this doesn't make any sense is that I have 4GB of RAM (3.88GB avaliable)  and Gradle says it requires around 3.15GB. Could someone expand on this for me. As by my logic there should be enough RAM to run it.