Problem in viewing PWM signals for Tiva C series on Logic Analyzer

Hi, I am working with Tiva C series and Keil IDE. I want to generate PWM signals using PWM modulator present in Tiva C series. I had compiled the code successfully but when I simulated getting errors like this

*** error 65: access violation at 0x400FE058 : no 'write' permission
*** error 65: access violation at 0x400FE640 : no 'write' permission
*** error 65: access violation at 0x400FE06C : no 'read' permission
*** error 65: access violation at 0x400FE06C : no 'read' permission
*** error 65: access violation at 0x400FE06C : no 'read' permission

continuously getting errors like this and I can't able to run the code in the simulation mode and also not able to view these signals in the logic analyzer. I am attaching my project code along with this. Need Solution

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_gpio.h"
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/pin_map.h"
#include "driverlib/gpio.h"
#include "driverlib/pwm.h"

#define GPIO_PB6_M0PWM0         0x00011804
#define GPIO_PB7_M0PWM1         0x00011C04
#define GPIO_PB4_M0PWM2         0x00011004
#define GPIO_PB5_M0PWM3         0x00011404
#define GPIO_PE4_M0PWM4         0x00041004
#define GPIO_PE5_M0PWM5         0x00041404
#define GPIO_PF1_M1PWM5         0x00050405
#define GPIO_PF2_M1PWM6         0x00050805
#define GPIO_PF3_M1PWM7         0x00050C05

#define SYSCTL_RCGC2_R                  (*((volatile unsigned long *)0x400FE108))
#define SYSCTL_RCGC2_GPIOF               0x00000020  // port B Clock Gating Control


int
main(void)
{    unsigned long ulPeriod;

        volatile unsigned long delay;
                SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOF; // activate port B
                delay = SYSCTL_RCGC2_R;          // allow time to finish activating

    //Set the clock
   SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC |   SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);

   //Configure PWM Clock to match system
   SysCtlPWMClockSet(SYSCTL_PWMDIV_1);

   // Enable the peripherals used by this program.
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
    SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM1);  //The Tiva Launchpad has two modules (0 and 1). Module 1 covers the LED pins
    ulPeriod = SysCtlClockGet() / 200; //PWM frequency 200HZ

    //Configure PF1,PF2,PF3 Pins as PWM
    GPIOPinConfigure(GPIO_PF1_M1PWM5);
    GPIOPinConfigure(GPIO_PF2_M1PWM6);
    GPIOPinConfigure(GPIO_PF3_M1PWM7);
    GPIOPinTypePWM(GPIO_PORTF_BASE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3);

    //Configure PWM Options
    //PWM_GEN_2 Covers M1PWM4 and M1PWM5
    //PWM_GEN_3 Covers M1PWM6 and M1PWM7 See page 207 4/11/13 DriverLib doc
    PWMGenConfigure(PWM1_BASE, PWM_GEN_2, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_NO_SYNC);
    PWMGenConfigure(PWM1_BASE, PWM_GEN_3, PWM_GEN_MODE_UP_DOWN | PWM_GEN_MODE_NO_SYNC);

    //Set the Period (expressed in clock ticks)
    PWMGenPeriodSet(PWM1_BASE, PWM_GEN_2, ulPeriod);
    PWMGenPeriodSet(PWM1_BASE, PWM_GEN_3, ulPeriod);

    //Set PWM duty-50% (Period /2)
    PWMPulseWidthSet(PWM1_BASE, PWM_OUT_5,ulPeriod/2);
    PWMPulseWidthSet(PWM1_BASE, PWM_OUT_6,ulPeriod/2);
    PWMPulseWidthSet(PWM1_BASE, PWM_OUT_7,ulPeriod/2);

    // Enable the PWM generator
    PWMGenEnable(PWM1_BASE, PWM_GEN_2);
    PWMGenEnable(PWM1_BASE, PWM_GEN_3);

    // Turn on the Output pins
    PWMOutputState(PWM1_BASE, PWM_OUT_5_BIT |PWM_OUT_6_BIT|PWM_OUT_7_BIT, true);

    //Do nothing
    while(1)
    {

    }

}