Seg Fault when generating saif files

[marcusnchow]

When enabling Saif generation, during toggle_start() a segfault occurs

--- Stack trace follows:

Dumping VCS Annotated Stack:
#0  0x00002aaab34be41c in waitpid () from /usr/lib64/libc.so.6
#1  0x00002aaab343bf12 in do_system () from /usr/lib64/libc.so.6
#2  0x00002aaaabba41fc in SNPSle_10ee25eff68cd8461c9146fa1d0b35e87067f3c8015b313e639d2928478c79b3f673f99203bcf8be64600612100082236bffb2007f1e0ef9 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/liberrorinf.so
#3  0x00002aaaabba5d3e in SNPSle_10ee25eff68cd8461c9146fa1d0b35e87067f3c8015b313efba706aab251478fa49e66610e453774633a6c152e7ef778f2202cda681f3d4e () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/liberrorinf.so
#4  0x00002aaaabb9e6e3 in SNPSle_d35ca1ff70d465c2b9b1a72eee90a506fdd009d3de3db1de () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/liberrorinf.so
#5  0x00002aaaae156abf in SNPSle_64133461705005bb725549e2e6fa1b3f () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#6  0x00002aaaadf9cc89 in SNPSle_82244d58c54c18c70d63edc9becab634 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#8  0x00002aaaae02386b in SNPSle_d0c6aa4547928a076c6a7387f176b91f () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#9  0x00002aaaae023c57 in SNPSle_f8189e243e06727cbc8fefa02abc477a () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#10 0x00002aaaaf5660bd in SNPSle_63db3517215287601654c35b94c94056c0a5a59aee97759333960728f43023f48c1271846be83368 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#11 0x00002aaaaf575d64 in SNPSle_1996d1c57ee46f66c1457fe7153b8c81 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#12 0x00002aaaaf5785a0 in SNPSle_76e8cf87dc2172bd7d995aed3130eb7a () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#13 0x00002aaaaf503ffe in SNPSle_504d78fdcb768ed3388a1d994b1d1a3e () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#14 0x00002aaaae0e6fa2 in SNPSle_2e07455001bd46d39a2c7b0251118d44832a40327fd732c0 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#15 0x00002aaaae0efe80 in SNPSle_63c7abb936d47b07d29d61775f9dbe8c () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#16 0x00002aaaae16a977 in SNPSle_490598bfebcc8e81efcf3d1815066cc9 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#17 0x00002aaaae180fa4 in SNPSle_490598bfebcc8e81 () from /home/socal/Synopsys/vcs-mx/O-2018.09-SP2/linux64/lib/libvcsnew.so
#18 0x00002aaaab74f663 in main () from /home/mchow009/bsg_bladerunner/baseline/examples/group_matrix_matrix_multiply/group_matrix_matrix_multiply.daidir/_csrc0.so
#19 0x00002aaab341b505 in __libc_start_main () from /usr/lib64/libc.so.6
#20 0x000000000040654d in _start ()

Process VmPeak: 4563984 kb, VmSize: 4563980 kb
System Free Memory: 21239532 kb, System Free Swap: 2535468 kb

I'm using manycore_tb_top.network.manycore as the toggle region

$set_gate_level_monitoring("rtl_on");\n
$set_toggle_region(manycore_tb_top.network.manycore);
$toggle_start();

To repoduce...

checkout ci_saif_generation in bsg_replicant and bsg_manycore

I modified group_matrix_multiply to show of a simple test