=== FG instrumented: cur=2s max=RLIM_INFINITY ===
limits: cur=2 max=9223372036854775807 (0x7fffffffffffffff)
beat +0.1s xcpu=0
beat +0.2s xcpu=0
beat +0.3s xcpu=0
beat +0.4s xcpu=0
beat +0.5s xcpu=0
beat +0.6s xcpu=0
beat +0.7s xcpu=0
beat +0.8s xcpu=0
beat +0.8s xcpu=0
beat +0.9s xcpu=0
beat +1.0s xcpu=0
beat +1.1s xcpu=0
beat +1.2s xcpu=0
beat +1.3s xcpu=0
beat +1.4s xcpu=0
beat +1.5s xcpu=0
beat +1.6s xcpu=0
beat +1.7s xcpu=0
beat +1.7s xcpu=0
beat +1.8s xcpu=0
beat +1.9s xcpu=0
SIGNAL: SIGXCPU received
beat +2.8s xcpu=1
beat +2.8s xcpu=1
beat +2.9s xcpu=1
beat +3.0s xcpu=1
beat +3.1s xcpu=1
beat +3.2s xcpu=1
beat +3.3s xcpu=1
beat +3.4s xcpu=1
beat +3.5s xcpu=1
beat +3.6s xcpu=1
beat +3.6s xcpu=1
beat +3.7s xcpu=1
beat +3.8s xcpu=1
beat +3.9s xcpu=1
beat +7.0s xcpu=1
SURVIVED 5s past soft limit
fg_exit=0

=== shell control: ulimit -t 2 (sets BOTH soft+hard) ===
Cputime limit exceeded
shell_exit=152 (152=128+24 SIGXCPU)