Segment fault at btorexp.c:791

Hi, for the following formula,

(set-logic BV)
(declare-const bv_7-0 (_ BitVec 7))
(assert (not (forall ((q21 (_ BitVec 11)) (q22 (_ BitVec 7))) (not (= (bvadd bv_7-0 bv_7-0) q22 bv_7-0)))))
(check-sat)

boolector (commit 76aafdf) throws a seg fault

ASAN:SIGSEGV
=================================================================
==145979==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000030 (pc 0x7f66ea27dc16 bp 0x7ffc3e5e13d0 sp 0x7ffc3e5e13a0 T0)
    #0 0x7f66ea27dc15 in btor_exp_bv_mul /home/peisen/test/tofuzz/boolector/src/btorexp.c:791
    #1 0x7f66ea27a137 in btor_exp_create /home/peisen/test/tofuzz/boolector/src/btorexp.c:42
    #2 0x7f66ea457281 in elim_vars /home/peisen/test/tofuzz/boolector/src/preprocess/btorder.c:401
    #3 0x7f66ea4579c8 in btor_cer_node /home/peisen/test/tofuzz/boolector/src/preprocess/btorder.c:445
    #4 0x7f66ea374eea in simplify /home/peisen/test/tofuzz/boolector/src/btorslvquant.c:2587
    #5 0x7f66ea375151 in sat_quant_solver /home/peisen/test/tofuzz/boolector/src/btorslvquant.c:2611
    #6 0x7f66ea26e51c in btor_check_sat /home/peisen/test/tofuzz/boolector/src/btorcore.c:3036
    #7 0x7f66ea16c96f in boolector_sat /home/peisen/test/tofuzz/boolector/src/boolector.c:639
    #8 0x7f66ea447f90 in check_sat /home/peisen/test/tofuzz/boolector/src/parser/btorsmt2.c:4529
    #9 0x7f66ea44ba0b in read_command_smt2 /home/peisen/test/tofuzz/boolector/src/parser/btorsmt2.c:4695
    #10 0x7f66ea44e937 in parse_smt2_parser /home/peisen/test/tofuzz/boolector/src/parser/btorsmt2.c:4952
    #11 0x7f66ea2c7eae in parse_aux /home/peisen/test/tofuzz/boolector/src/btorparse.c:68
    #12 0x7f66ea2c9ae6 in btor_parse /home/peisen/test/tofuzz/boolector/src/btorparse.c:235
    #13 0x7f66ea1d6aeb in boolector_parse /home/peisen/test/tofuzz/boolector/src/boolector.c:4680
    #14 0x40cb32 in boolector_main /home/peisen/test/tofuzz/boolector/src/btormain.c:1440
    #15 0x4024f5 in main /home/peisen/test/tofuzz/boolector/src/boolectormain.c:17
    #16 0x7f66e9cd482f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #17 0x402408 in _start (/home/peisen/test/tofuzz/boolector/build/bin/boolector+0x402408)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/peisen/test/tofuzz/boolector/src/btorexp.c:791 btor_exp_bv_mul
==145979==ABORTING

Boolector / boolector

Segment fault at btorexp.c:791 #108