make[1]: Entering directory `/home/compudj/doc/userspace-rcu/formal-model/urcu'
rm -f pan* trail.out .input.spin* *.spin.trail .input.define
touch .input.define
cat .input.define >> pan.ltl
cat DEFINES >> pan.ltl
spin -f "!(`cat urcu_free.ltl | grep -v ^//`)" >> pan.ltl
cp urcu_free_no_wmb.define .input.define
cat .input.define > .input.spin
cat DEFINES >> .input.spin
cat urcu.spin >> .input.spin
rm -f .input.spin.trail
spin -a -X -N pan.ltl .input.spin
Exit-Status 0
gcc -O2 -w -DHASH64 -o pan pan.c
./pan -a -v -c1 -X -m10000000 -w20
warning: for p.o. reduction to be valid the never claim must be stutter-invariant
(never claims generated from LTL formulae are stutter-invariant)
depth 0: Claim reached state 5 (line 744)
pan: claim violated! (at depth 1882)
pan: wrote .input.spin.trail

(Spin Version 5.1.7 -- 23 December 2008)
Warning: Search not completed
	+ Partial Order Reduction

Full statespace search for:
	never claim         	+
	assertion violations	+ (if within scope of claim)
	acceptance   cycles 	+ (fairness disabled)
	invalid end states	- (disabled by never claim)

State-vector 56 byte, depth reached 4174, errors: 1
   367189 states, stored
  3431533 states, matched
  3798722 transitions (= stored+matched)
 13407384 atomic steps
hash conflicts:    253700 (resolved)

Stats on memory usage (in Megabytes):
   29.415	equivalent memory usage for states (stored*(State-vector + overhead))
   22.811	actual memory usage for states (compression: 77.55%)
         	state-vector as stored = 37 byte + 28 byte overhead
    8.000	memory used for hash table (-w20)
  457.764	memory used for DFS stack (-m10000000)
  488.518	total actual memory usage

unreached in proctype urcu_reader
	line 399, "pan.___", state 16, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 48, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 61, "(1)"
	line 418, "pan.___", state 91, "(1)"
	line 399, "pan.___", state 106, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 138, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 151, "(1)"
	line 418, "pan.___", state 181, "(1)"
	line 399, "pan.___", state 197, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 229, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 242, "(1)"
	line 418, "pan.___", state 272, "(1)"
	line 399, "pan.___", state 315, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 331, "(1)"
	line 408, "pan.___", state 347, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 360, "(1)"
	line 418, "pan.___", state 390, "(1)"
	line 540, "pan.___", state 414, "-end-"
	(18 of 414 states)
unreached in proctype urcu_writer
	line 399, "pan.___", state 14, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 399, "pan.___", state 20, "(1)"
	line 403, "pan.___", state 28, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 34, "(1)"
	line 403, "pan.___", state 35, "(1)"
	line 403, "pan.___", state 35, "(1)"
	line 401, "pan.___", state 40, "((i<1))"
	line 401, "pan.___", state 40, "((i>=1))"
	line 408, "pan.___", state 46, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 59, "(1)"
	line 409, "pan.___", state 60, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid))))"
	line 409, "pan.___", state 60, "else"
	line 409, "pan.___", state 63, "(1)"
	line 409, "pan.___", state 64, "(1)"
	line 409, "pan.___", state 64, "(1)"
	line 413, "pan.___", state 72, "(1)"
	line 413, "pan.___", state 73, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<_pid))))"
	line 413, "pan.___", state 73, "else"
	line 413, "pan.___", state 76, "(1)"
	line 413, "pan.___", state 77, "(1)"
	line 413, "pan.___", state 77, "(1)"
	line 411, "pan.___", state 82, "((i<1))"
	line 411, "pan.___", state 82, "((i>=1))"
	line 418, "pan.___", state 89, "(1)"
	line 418, "pan.___", state 90, "(!((cache_dirty_generation_ptr.bitfield&(1<<_pid))))"
	line 418, "pan.___", state 90, "else"
	line 418, "pan.___", state 93, "(1)"
	line 418, "pan.___", state 94, "(1)"
	line 418, "pan.___", state 94, "(1)"
	line 420, "pan.___", state 97, "(1)"
	line 420, "pan.___", state 97, "(1)"
	line 369, "pan.___", state 99, "(1)"
	line 639, "pan.___", state 103, "cached_generation_ptr.val[_pid] = (old_gen+1)"
	line 637, "pan.___", state 104, "old_gen = cached_generation_ptr.val[_pid]"
	line 399, "pan.___", state 108, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 399, "pan.___", state 114, "(1)"
	line 403, "pan.___", state 122, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 128, "(1)"
	line 403, "pan.___", state 129, "(1)"
	line 403, "pan.___", state 129, "(1)"
	line 401, "pan.___", state 134, "((i<1))"
	line 401, "pan.___", state 134, "((i>=1))"
	line 409, "pan.___", state 153, "(1)"
	line 409, "pan.___", state 154, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid))))"
	line 409, "pan.___", state 154, "else"
	line 409, "pan.___", state 157, "(1)"
	line 409, "pan.___", state 158, "(1)"
	line 409, "pan.___", state 158, "(1)"
	line 413, "pan.___", state 166, "(1)"
	line 413, "pan.___", state 167, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<_pid))))"
	line 413, "pan.___", state 167, "else"
	line 413, "pan.___", state 170, "(1)"
	line 413, "pan.___", state 171, "(1)"
	line 413, "pan.___", state 171, "(1)"
	line 411, "pan.___", state 176, "((i<1))"
	line 411, "pan.___", state 176, "((i>=1))"
	line 418, "pan.___", state 183, "(1)"
	line 418, "pan.___", state 184, "(!((cache_dirty_generation_ptr.bitfield&(1<<_pid))))"
	line 418, "pan.___", state 184, "else"
	line 418, "pan.___", state 187, "(1)"
	line 418, "pan.___", state 188, "(1)"
	line 418, "pan.___", state 188, "(1)"
	line 420, "pan.___", state 191, "(1)"
	line 420, "pan.___", state 191, "(1)"
	line 369, "pan.___", state 193, "(1)"
	line 652, "pan.___", state 199, "(1)"
	line 646, "pan.___", state 202, "((write_lock==0))"
	line 646, "pan.___", state 202, "else"
	line 644, "pan.___", state 203, "(1)"
	line 160, "pan.___", state 209, "(1)"
	line 164, "pan.___", state 217, "(1)"
	line 164, "pan.___", state 218, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<_pid))))"
	line 164, "pan.___", state 218, "else"
	line 162, "pan.___", state 223, "((j<1))"
	line 162, "pan.___", state 223, "((j>=1))"
	line 168, "pan.___", state 229, "(1)"
	line 168, "pan.___", state 230, "(!((cache_dirty_generation_ptr.bitfield&(1<<_pid))))"
	line 168, "pan.___", state 230, "else"
	line 160, "pan.___", state 241, "(1)"
	line 168, "pan.___", state 261, "(1)"
	line 160, "pan.___", state 277, "(1)"
	line 164, "pan.___", state 285, "(1)"
	line 168, "pan.___", state 297, "(1)"
	line 399, "pan.___", state 311, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 325, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 343, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 356, "(1)"
	line 413, "pan.___", state 369, "(1)"
	line 418, "pan.___", state 386, "(1)"
	line 399, "pan.___", state 405, "(1)"
	line 403, "pan.___", state 417, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 435, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 461, "(1)"
	line 418, "pan.___", state 478, "(1)"
	line 403, "pan.___", state 510, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 528, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 554, "(1)"
	line 418, "pan.___", state 571, "(1)"
	line 164, "pan.___", state 594, "(1)"
	line 168, "pan.___", state 606, "(1)"
	line 160, "pan.___", state 618, "(1)"
	line 168, "pan.___", state 638, "(1)"
	line 164, "pan.___", state 662, "(1)"
	line 168, "pan.___", state 674, "(1)"
	line 399, "pan.___", state 696, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 399, "pan.___", state 698, "(1)"
	line 399, "pan.___", state 699, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid)))"
	line 399, "pan.___", state 699, "else"
	line 399, "pan.___", state 702, "(1)"
	line 403, "pan.___", state 710, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 712, "(1)"
	line 403, "pan.___", state 713, "((cache_dirty_urcu_active_readers.bitfield&(1<<_pid)))"
	line 403, "pan.___", state 713, "else"
	line 403, "pan.___", state 716, "(1)"
	line 403, "pan.___", state 717, "(1)"
	line 403, "pan.___", state 717, "(1)"
	line 401, "pan.___", state 722, "((i<1))"
	line 401, "pan.___", state 722, "((i>=1))"
	line 408, "pan.___", state 728, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 741, "(1)"
	line 409, "pan.___", state 742, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid))))"
	line 409, "pan.___", state 742, "else"
	line 409, "pan.___", state 745, "(1)"
	line 409, "pan.___", state 746, "(1)"
	line 409, "pan.___", state 746, "(1)"
	line 413, "pan.___", state 754, "(1)"
	line 413, "pan.___", state 755, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<_pid))))"
	line 413, "pan.___", state 755, "else"
	line 413, "pan.___", state 758, "(1)"
	line 413, "pan.___", state 759, "(1)"
	line 413, "pan.___", state 759, "(1)"
	line 411, "pan.___", state 764, "((i<1))"
	line 411, "pan.___", state 764, "((i>=1))"
	line 418, "pan.___", state 771, "(1)"
	line 418, "pan.___", state 772, "(!((cache_dirty_generation_ptr.bitfield&(1<<_pid))))"
	line 418, "pan.___", state 772, "else"
	line 418, "pan.___", state 775, "(1)"
	line 418, "pan.___", state 776, "(1)"
	line 418, "pan.___", state 776, "(1)"
	line 420, "pan.___", state 779, "(1)"
	line 420, "pan.___", state 779, "(1)"
	line 403, "pan.___", state 810, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 828, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 854, "(1)"
	line 418, "pan.___", state 871, "(1)"
	line 403, "pan.___", state 900, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 918, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 944, "(1)"
	line 418, "pan.___", state 961, "(1)"
	line 399, "pan.___", state 980, "(1)"
	line 403, "pan.___", state 992, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 1010, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 1036, "(1)"
	line 418, "pan.___", state 1053, "(1)"
	line 403, "pan.___", state 1085, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 408, "pan.___", state 1103, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 413, "pan.___", state 1129, "(1)"
	line 418, "pan.___", state 1146, "(1)"
	line 164, "pan.___", state 1169, "(1)"
	line 168, "pan.___", state 1181, "(1)"
	line 160, "pan.___", state 1193, "(1)"
	line 168, "pan.___", state 1213, "(1)"
	line 164, "pan.___", state 1237, "(1)"
	line 168, "pan.___", state 1249, "(1)"
	line 399, "pan.___", state 1271, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<_pid)))"
	line 399, "pan.___", state 1273, "(1)"
	line 399, "pan.___", state 1274, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid)))"
	line 399, "pan.___", state 1274, "else"
	line 399, "pan.___", state 1277, "(1)"
	line 403, "pan.___", state 1285, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<_pid)))"
	line 403, "pan.___", state 1287, "(1)"
	line 403, "pan.___", state 1288, "((cache_dirty_urcu_active_readers.bitfield&(1<<_pid)))"
	line 403, "pan.___", state 1288, "else"
	line 403, "pan.___", state 1291, "(1)"
	line 403, "pan.___", state 1292, "(1)"
	line 403, "pan.___", state 1292, "(1)"
	line 401, "pan.___", state 1297, "((i<1))"
	line 401, "pan.___", state 1297, "((i>=1))"
	line 408, "pan.___", state 1303, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<_pid)))"
	line 409, "pan.___", state 1316, "(1)"
	line 409, "pan.___", state 1317, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<_pid))))"
	line 409, "pan.___", state 1317, "else"
	line 409, "pan.___", state 1320, "(1)"
	line 409, "pan.___", state 1321, "(1)"
	line 409, "pan.___", state 1321, "(1)"
	line 413, "pan.___", state 1329, "(1)"
	line 413, "pan.___", state 1330, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<_pid))))"
	line 413, "pan.___", state 1330, "else"
	line 413, "pan.___", state 1333, "(1)"
	line 413, "pan.___", state 1334, "(1)"
	line 413, "pan.___", state 1334, "(1)"
	line 411, "pan.___", state 1339, "((i<1))"
	line 411, "pan.___", state 1339, "((i>=1))"
	line 418, "pan.___", state 1346, "(1)"
	line 418, "pan.___", state 1347, "(!((cache_dirty_generation_ptr.bitfield&(1<<_pid))))"
	line 418, "pan.___", state 1347, "else"
	line 418, "pan.___", state 1350, "(1)"
	line 418, "pan.___", state 1351, "(1)"
	line 418, "pan.___", state 1351, "(1)"
	line 420, "pan.___", state 1354, "(1)"
	line 420, "pan.___", state 1354, "(1)"
	line 164, "pan.___", state 1379, "(1)"
	line 168, "pan.___", state 1391, "(1)"
	line 160, "pan.___", state 1403, "(1)"
	line 168, "pan.___", state 1423, "(1)"
	line 164, "pan.___", state 1447, "(1)"
	line 168, "pan.___", state 1459, "(1)"
	line 702, "pan.___", state 1484, "-end-"
	(160 of 1484 states)
unreached in proctype :init:
	line 709, "pan.___", state 9, "((j<2))"
	line 709, "pan.___", state 9, "((j>=2))"
	line 710, "pan.___", state 20, "((j<2))"
	line 710, "pan.___", state 20, "((j>=2))"
	line 715, "pan.___", state 33, "((j<2))"
	line 715, "pan.___", state 33, "((j>=2))"
	(3 of 46 states)
unreached in proctype :never:
	line 749, "pan.___", state 8, "-end-"
	(1 of 8 states)

pan: elapsed time 2.96 seconds
pan: rate 124050.34 states/second
pan: avg transition delay 7.7921e-07 usec
cp .input.spin urcu_free_no_wmb.spin.input
cp .input.spin.trail urcu_free_no_wmb.spin.input.trail
make[1]: Leaving directory `/home/compudj/doc/userspace-rcu/formal-model/urcu'