This error is probably due to ASE defect CR 772749,
"Under some rare conditions, execute dynamic sql sttaements could lead to the SIG 11 and stacktrace includes crp_vardec(), crp_var(), and sqt_reparse()."
This bug is fixed in 15.7 SP132 and higher.
When looking at an infected with 11 error and trying to figure out what to use as a search term on the SAP Support portal, the most important term is usually the function name the error happened in:
Current process (0x6ec700e4) infected with signal 11 (SIGSEGV)
Address 0x0x00000000013bc0ad (crp_vardec+0xbd), siginfo (code, address) = (1, 0x(ni