It crashes in check_vcenter_hv_status function, debug log:

7568:20161115:205534.517 In get_value_simple() key_orig:'vmware.hv.status[{$VSPHERE_URL},{$VSPHERE_UUID}]' addr:'172.16.11.20'
7568:20161115:205534.517 In check_vcenter_hv_status()
7568:20161115:205534.517 In get_vcenter_hvprop() propid:15
7568:20161115:205534.517 In get_vmware_service() 'zabbix'@'https://v-center/sdk'
7568:20161115:205534.517 In zbx_vmware_get_service() zabbix@https://v-center/sdk
7568:20161115:205534.518 End of zbx_vmware_get_service():FAIL
7568:20161115:205534.518 End of get_vmware_service():(nil)
7568:20161115:205534.518 End of get_vcenter_hvprop():SYSINFO_SUCCEED
7568:20161115:205534.518 Got signal [signal:11(SIGSEGV),reason:1,refaddr:(nil)]. Crashing ...

I guess it's because
in get_vcenter_hvprop

int ret = SYSINFO_RET_FAIL;

then it calls

if (NULL == (service = get_vmware_service(url, username, password, result, &ret)))
goto unlock;

Note: &ret passed and get_vmware_service returns NULL and set ret to SYSINFO_RET_OK if service was added, but not yet processed by collector

and then in the end of get_vcenter_hvprop:

unlock:
zbx_vmware_unlock();
out:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s():%s", __function_name, sysinfo_ret_string(ret));

return ret;

Ie no service, no data, but it SYSINFO_RET_OK returned