[ 0:00]   | load /home/xrockai/src/divine/nightly/test/refine/pointers/subtract-b.c subtract-b.c
[ 0:00]   | expect --result error --location subtract-b.c:14
[ 0:00]   | expect --trace FAULT: --trace-count 1
[ 0:00]   | cc -o testcase.bc subtract-b.c
[ 0:00]   | refine -o nofail:malloc --refinement pointers --output testcase.bc testcase.bc
[ 0:00]   | verify --max-memory 4GiB --max-time 600 --threads 2 --report-filename verify.out --solver smtlib:z3 -o nofail:malloc --lamp pointers --symbolic -o abort:ptrcmp testcase.bc
[ 0:00] compiling subtract-b.c
[ 0:00] loading bitcode … DiOS … LART … RR … constants … done
[ 0:38] booting … done
[ 0:38] states per second: 2.90276
[ 0:39] state count: 2
[ 0:39] mips: 0.13
[ 0:39] symbolic: 1
[ 0:39] 
[ 0:39] error found: yes
[ 0:39] error trace: |
[ 0:39]   ASSUME (not (= var_1 #x0000000000000000))
[ 0:39]   ASSUME (not (= var_2 #x0000000000000000))
[ 0:39]   ASSUME (and (not (= var_2 #x0000000000000000)) (bvult var_2 (bvsub #xffffffffffffffff #x0000000000000004)))
[ 0:39]   ASSUME (and (not (= var_1 #x0000000000000000)) (bvult var_1 (bvsub #xffffffffffffffff #x0000000000000004)))
[ 0:39]   ASSUME (and (and (and (not (= var_2 #x0000000000000000)) (bvult var_2 (bvsub #xffffffffffffffff #x0000000000000004))) (or (bvule (bvadd var_2 #x0000000000000004) var_1) (bvule (bvadd var_1 #x0000000000000004) var_2))) (and (not (= var_1 #x0000000000000000)) (bvult var_1 (bvsub #xffffffffffffffff #x0000000000000004))))
[ 0:39]   ASSUME (not (= #x0000000000000004 #x0000000000000000))
[ 0:39]   FAULT: unsupported abstract operation: slt
[ 0:39]   [0] FATAL: not implemented in userspace
[ 0:39] 
[ 0:39] active stack:
[ 0:40]   - symbol: void __dios::FaultBase::handler<__dios::Context>(_VM_Fault, _VM_Frame*, void (*)())
[ 0:40]     location: /dios/sys/fault.hpp:118
[ 0:40]   - symbol: __dios_fault.12
[ 0:40]     location: /dios/arch/divm/fault.c:12
[ 0:40]   - symbol: __lamp_slt
[ 0:40]     location: /dios/lava/base.hpp:215
[ 0:40]   - symbol: __lart_abstract.slt.cmp.i64
[ 0:40]     location: (unknown location)
[ 0:40]   - symbol: main
[ 0:40]     location: subtract-b.c:14
[ 0:40]   - symbol: __dios_start
[ 0:40]     location: /dios/libc/sys/start.cpp:94
[ 0:40] + divine sim --batch --skip-init --load-report verify.out
[ 0:40] 
[ 0:50]            ^       —————.   —.—  .     .  —.—  .     .  .—————    .    .
[ 0:50]           ———      |     |   |   |     |   |   |\    |  |         |    |
[ 0:50]          —(o)—     |     |   |   |     |   |   |  \  |  |————     '————|
[ 0:50]         ———————    |     |   |    \   /    |   |    \|  |              |
[ 0:50]        —————————   —————'   —'—     '     —'—  '     '  '—————         '
[ 0:50] 
[ 0:50] Welcome to 'divine sim', an interactive debugger. Type 'help' to get started.
[ 0:50] traced states:
[ 0:50] ▶ state    #1 [new] -- active threads: [0:0] --
[ 0:50] T: FAULT: unsupported abstract operation: slt
[ 0:51] # executing void __dios::FaultBase::handler<{Context}>(_VM_Fault, _VM_Frame*, void (*)()) at /dios/sys/fault.hpp:118
[ 0:51] # NOTE: $frame in __dios_fault.12
[ 0:51] > backtrace
[ 0:51]   void __dios::FaultBase::handler<{Context}>(_VM_Fault, _VM_Frame*, void (*)()) at /dios/sys/fault.hpp:118
[ 0:51]   __dios_fault.12 at /dios/arch/divm/fault.c:12
[ 0:51]   __lamp_slt at /dios/lava/base.hpp:215
[ 0:51]   __lart_abstract.slt.cmp.i64 at (unknown location)
[ 0:51]   main at subtract-b.c:14
[ 0:51]   __dios_start at /dios/libc/sys/start.cpp:94
[ 0:51] # executing void __dios::FaultBase::handler<{Context}>(_VM_Fault, _VM_Frame*, void (*)()) at /dios/sys/fault.hpp:118
[ 0:51] # NOTE: $frame in __dios_fault.12