When I attempt to run `bin/opennlp Parser models/en-parser-chunking.bin` I get an error for out of memory on the heap although I give it 4 gigs, is this normal?

So I recently checked out from the svn repo `https://svn.apache.org/repos/asf/opennlp/tags/opennlp-1.5.3-rc3` and ran `mvn install` from inside the `opennpl` directory. That finished successfully, all test were successful. Next I downloaded all the english models from `http://opennlp.sourceforge.net/models-1.5/`. Finally, I moved all the model bins into `opennpl-tools/models` and I went into `opennpl-tools` and ran `bin/opennlp Parser models/en-parser-chunking.bin` and received the following backtrace:
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project opennlp-tools: An exception occured while executing the Java class. null: InvocationTargetException: Java heap space -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project opennlp-tools: An exception occured while executing the Java class. null
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:318)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:153)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:414)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:357)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing the Java class. null
at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:352)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 19 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.OutOfMemoryError: Java heap space
at java.io.DataInputStream.readUTF(DataInputStream.java:644)
at java.io.DataInputStream.readUTF(DataInputStream.java:547)
at opennlp.model.BinaryFileDataReader.readUTF(BinaryFileDataReader.java:61)
at opennlp.model.AbstractModelReader.readUTF(AbstractModelReader.java:82)
at opennlp.model.AbstractModelReader.getPredicates(AbstractModelReader.java:119)
at opennlp.maxent.io.GISModelReader.constructModel(GISModelReader.java:74)
at opennlp.model.GenericModelReader.constructModel(GenericModelReader.java:59)
at opennlp.model.AbstractModelReader.getModel(AbstractModelReader.java:87)
at opennlp.tools.util.model.GenericModelSerializer.create(GenericModelSerializer.java:35)
at opennlp.tools.util.model.GenericModelSerializer.create(GenericModelSerializer.java:31)
at opennlp.tools.util.model.BaseModel.loadModel(BaseModel.java:231)
at opennlp.tools.util.model.BaseModel.<init>(BaseModel.java:181)
at opennlp.tools.parser.ParserModel.<init>(ParserModel.java:152)
at opennlp.tools.cmdline.parser.ParserModelLoader.loadModel(ParserModelLoader.java:41)
at opennlp.tools.cmdline.parser.ParserModelLoader.loadModel(ParserModelLoader.java:32)
at opennlp.tools.cmdline.ModelLoader.load(ModelLoader.java:62)
at opennlp.tools.cmdline.parser.ParserTool.run(ParserTool.java:93)
at opennlp.tools.cmdline.CLI.main(CLI.java:225)
... 6 more

I then edited my POM file and changed the allowed memory on the `maven-surefire-plugin` plugin to 2 gigabytes and the same thing occurred, and then the same for 4 gigabytes. Is this normal behavior? Am I doing something horribly wrong? In advanced, I apologize if this is a silly question!