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Reading symbols from /tmp/l/_root/bin/arachne-pnr...(no debugging symbols found)...done.
(gdb) run  -d 5k -o rgb.asc -p rgb.pcf rgb.blif
Starting program: /tmp/l/_root/bin/arachne-pnr -d 5k -o rgb.asc -p rgb.pcf rgb.blif
seed: 1
device: 5k
read_chipdb +/share/arachne-pnr/chipdb-5k.bin...
  supported packages: sg48
read_blif rgb.blif...
prune...
read_pcf rgb.pcf...
instantiate_io...
pack...

After packing:
IOs          4 / 39
GBs          0 / 8
  GB_IOs     0 / 8
LCs          0 / 5280
  DFF        0
  CARRY      0
  CARRY, DFF 0
  DFF PASS   0
  CARRY PASS 0
BRAMs        0 / 30
WARMBOOTs    0 / 1
PLLs         0 / 1
MAC16s       0 / 8
SPRAM256KAs  0 / 4
HFOSCs       1 / 1
LFOSCs       0 / 1
RGBA_DRVs    1 / 1
LEDDA_IPs    1 / 1
I2Cs         0 / 2
SPIs         0 / 2

place_constraints...
promote_globals...
  promoted 0 nets
  1 globals
    1 clk
realize_constants...
  realized 1
place...
  initial wire length = 34
  at iteration #50: temp = 1.99518, wire length = 9
  at iteration #100: temp = 0.0685082, wire length = 6
  final wire length = 5

After placement:
PIOs       2 / 39
PLBs       1 / 660
BRAMs      0 / 30

  place time 0.00s
route...
terminate called after throwing an instance of 'std::out_of_range'
  what():  map::at

Program received signal SIGABRT, Aborted.
0x00007ffff712ad48 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007ffff712ad48 in raise () from /lib64/libc.so.6
#1  0x00007ffff712c2aa in abort () from /lib64/libc.so.6
#2  0x00007ffff7a61f25 in __gnu_cxx::__verbose_terminate_handler ()
    at /var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libstdc++-v3/libsupc++/vterminate.cc:95
#3  0x00007ffff7a5ef95 in __cxxabiv1::__terminate (handler=<optimized out>)
    at /var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libstdc++-v3/libsupc++/eh_terminate.cc:47
#4  0x00007ffff7a5f080 in std::terminate ()
    at /var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libstdc++-v3/libsupc++/eh_terminate.cc:57
#5  0x00007ffff7a5f42b in __cxxabiv1::__cxa_throw (obj=obj@entry=0x5555608e93a0,
    tinfo=0x7ffff7dc7010 <typeinfo for std::out_of_range>, dest=0x7ffff7a77b70 <std::out_of_range::~out_of_range()>)
    at /var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libstdc++-v3/libsupc++/eh_throw.cc:87
#6  0x00007ffff7a90eb6 in std::__throw_out_of_range (__s=0x5555555d13ce "map::at")
    at /var/tmp/portage/sys-devel/gcc-5.4.0-r3/work/gcc-5.4.0/libstdc++-v3/src/c++11/functexcept.cc:90
#7  0x000055555559caad in Router::port_cnet(Instance*, Port*) ()
#8  0x00005555555a69f3 in Router::route() ()
#9  0x00005555555a7e7c in route(DesignState&, int) ()
#10 0x0000555555559209 in main ()