From this excerpt of the session log I dare to suppose that the SRT_CH_TRIL_SRC_SYS_CLI needs more than four passes to sort all its input data.
Please look for messages by this Sorter where it states how much memory it would need for e.g. a 3-pass sort and set its buffer size accordingly. Usually those estimations in the session log are pretty accurate, and a 3-pass sort will usually reduce its total runtime by 80-95% if it ran a 5- or even 6-pass sort.
However, that's not the only important thing. Please take a look at SQ_CH_TRIL_CANDDT_MATCH; this SQ took app. 40 minutes total runtime and was lazy for app. 39 minutes of this time. That's not a good relation. Please check (using the guidelines in the Performance Tuning guide for PowerCenter, part of the PowerCenter documentation set) whether you have a source bottleneck here; in this case you should definitely work with the DB team and the network team to find out whether it's a problem with the source DB and/or a problem with the network route which those data records had to take before being processed by the PowerCenter server.
Even worse is the total runtime for SQ_CH_tril_src_sys_cli_t (almost 3 hours!) and the transformations following this SQ; they take up a really heavy amount of time (again, almost 3 hours!), and the heaviest transformations in this regard are three LKP transformations. You might want to check whether you can increase their buffer memory sizes such that you can increase mapping performance notably here.
Again, the Performance Tuning guide will be your friend here.
Were you able to figure out the issue here? Else you might need to reach out to the Informatica Support team to capture the required information for thorough analysis for a root cause.