Mac Keeps crashing

Hi all wonder if you guys could shed any light on my Mac Pro which keeps
crashing I am not sure if it’s a hardware or software complication. I have
copied the error log below please advise. Thanks in advance for your assistances.

01/11/2016 10:23:53.000 bootlog[0]: BOOT_TIME 1477995833 0

01/11/2016 10:22:54.205 Spotify[694]: NX_KEYTYPE_PLAY

01/11/2016 10:22:26.358 Microsoft Outlook[478]: Stream 0x7f94787ef1c0 is sending an event before being opened

01/11/2016 10:22:16.763 Microsoft Outlook[478]: Stream 0x7f947c9ad7c0 is sending an event before being opened

01/11/2016 10:21:56.685 Spotify[694]: NX_KEYTYPE_PLAY

01/11/2016 10:20:45.868 Microsoft Outlook[478]: Stream 0x7f947ead0ad0 is sending an event before being opened

01/11/2016 10:20:44.938 Microsoft Outlook[478]: CFNetwork SSLHandshake failed (-9806)

01/11/2016 10:20:44.896 Microsoft Outlook[478]: Stream 0x7f9476c5aa30 is sending an event before being opened

01/11/2016 10:20:44.879 Microsoft Outlook[478]: Stream 0x7f94794bdaf0 is sending an event before being opened

01/11/2016 10:20:44.808 Microsoft Outlook[478]: Stream 0x7f9478e58060 is sending an event before being opened

01/11/2016 10:20:44.806 Microsoft Outlook[478]: CFNetwork SSLHandshake failed (-9847)

01/11/2016 10:20:44.751 Microsoft Outlook[478]: Stream 0x7f9478cd4110 is sending an event before being opened

Friday 4th November 2016

04/11/2016 11:54:30.000 bootlog[0]: BOOT_TIME 1478260470 0

04/11/2016 11:51:57.095 Adobe Photoshop CC 2015.5[499]: void CGSUpdateManager::log() const: conn 0x14983: spurious update.

04/11/2016 11:51:56.636 WindowServer[168]: common_reenable_update: UI updates were finally reenabled by application "Photoshop CC" after 28.78 seconds [0.03fps] (server forcibly re-enabled them after 1.00 seconds [1.00fps])

04/11/2016 11:51:46.272 Microsoft Outlook[490]: Stream 0x7fafcdc1c470 is sending an event before being opened

04/11/2016 11:51:46.272 Microsoft Outlook[490]: Stream 0x7fafcdc1c470 is sending an event before being opened

04/11/2016 11:51:42.861 WindowServer[168]: disable_update_likely_unbalanced: UI updates still disabled by application "Photoshop CC" after 15.00 seconds (server forcibly re-enabled them after 1.00 seconds). Likely an unbalanced disableUpdate call.

04/11/2016 11:51:31.000 kernel[0]: *** kernel exceeded 500 log message per second limit - remaining messages this second discarded ***

04/11/2016 11:51:31.000 kernel[0]: FindFileRef: pid not matching

04/11/2016 11:51:31.000 kernel[0]: not matching

04/11/2016 11:51:30.000 kernel[0]: *** kernel exceeded 500 log message per second limit - remaining messages this second discarded ***

04/11/2016 11:51:28.861 WindowServer[168]: disable_update_timeout: UI updates were forcibly disabled by application "Photoshop CC" for over 1.00 seconds. Server has re-enabled them.