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_single_flip.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)
Depth=    8352 States=    1e+06 Transitions= 1.05e+07 Memory=   534.807	t=   8.93 R=   1e+05
pan: claim violated! (at depth 1352)
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 64 byte, depth reached 8352, errors: 1
  1456373 states, stored
 13442538 states, matched
 14898911 transitions (= stored+matched)
 50580660 atomic steps
hash conflicts:   5166006 (resolved)

Stats on memory usage (in Megabytes):
  127.779	equivalent memory usage for states (stored*(State-vector + overhead))
  100.443	actual memory usage for states (compression: 78.61%)
         	state-vector as stored = 44 byte + 28 byte overhead
    8.000	memory used for hash table (-w20)
  457.764	memory used for DFS stack (-m10000000)
  566.154	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<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 48, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 61, "(1)"
	line 418, "pan.___", state 91, "(1)"
	line 399, "pan.___", state 113, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 145, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 158, "(1)"
	line 418, "pan.___", state 188, "(1)"
	line 399, "pan.___", state 211, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 243, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 256, "(1)"
	line 418, "pan.___", state 286, "(1)"
	line 399, "pan.___", state 350, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 382, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 395, "(1)"
	line 418, "pan.___", state 425, "(1)"
	line 540, "pan.___", state 456, "-end-"
	(17 of 456 states)
unreached in proctype urcu_reader_sig
	line 399, "pan.___", state 25, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 57, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 70, "(1)"
	line 418, "pan.___", state 100, "(1)"
	line 399, "pan.___", state 113, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 145, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 158, "(1)"
	line 418, "pan.___", state 188, "(1)"
	line 399, "pan.___", state 202, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 234, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 247, "(1)"
	line 418, "pan.___", state 277, "(1)"
	line 399, "pan.___", state 314, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 346, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 359, "(1)"
	line 418, "pan.___", state 389, "(1)"
	line 614, "pan.___", state 411, "-end-"
	(17 of 411 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<2)) -> (0) : (1) ))))"
	line 403, "pan.___", state 28, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 46, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 59, "(1)"
	line 413, "pan.___", state 72, "(1)"
	line 418, "pan.___", state 89, "(1)"
	line 399, "pan.___", state 108, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 403, "pan.___", state 122, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 153, "(1)"
	line 413, "pan.___", state 166, "(1)"
	line 652, "pan.___", state 199, "(1)"
	line 175, "pan.___", state 208, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 179, "pan.___", state 217, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 240, "(1)"
	line 164, "pan.___", state 248, "(1)"
	line 168, "pan.___", state 260, "(1)"
	line 175, "pan.___", state 271, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))"
	line 183, "pan.___", state 293, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))"
	line 160, "pan.___", state 303, "(1)"
	line 164, "pan.___", state 311, "(1)"
	line 168, "pan.___", state 323, "(1)"
	line 175, "pan.___", state 338, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 179, "pan.___", state 347, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 183, "pan.___", state 360, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 370, "(1)"
	line 164, "pan.___", state 378, "(1)"
	line 168, "pan.___", state 390, "(1)"
	line 399, "pan.___", state 404, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 403, "pan.___", state 418, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 436, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 449, "(1)"
	line 413, "pan.___", state 462, "(1)"
	line 418, "pan.___", state 479, "(1)"
	line 399, "pan.___", state 498, "(1)"
	line 403, "pan.___", state 510, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 528, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 413, "pan.___", state 554, "(1)"
	line 418, "pan.___", state 571, "(1)"
	line 403, "pan.___", state 603, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 408, "pan.___", state 621, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 413, "pan.___", state 647, "(1)"
	line 418, "pan.___", state 664, "(1)"
	line 179, "pan.___", state 687, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 183, "pan.___", state 700, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 710, "(1)"
	line 164, "pan.___", state 718, "(1)"
	line 168, "pan.___", state 730, "(1)"
	line 175, "pan.___", state 741, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))"
	line 183, "pan.___", state 763, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))"
	line 160, "pan.___", state 773, "(1)"
	line 164, "pan.___", state 781, "(1)"
	line 168, "pan.___", state 793, "(1)"
	line 175, "pan.___", state 808, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 179, "pan.___", state 817, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 183, "pan.___", state 830, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 840, "(1)"
	line 164, "pan.___", state 848, "(1)"
	line 168, "pan.___", state 860, "(1)"
	line 399, "pan.___", state 882, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 399, "pan.___", state 884, "(1)"
	line 399, "pan.___", state 885, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 399, "pan.___", state 885, "else"
	line 399, "pan.___", state 888, "(1)"
	line 403, "pan.___", state 896, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 403, "pan.___", state 898, "(1)"
	line 403, "pan.___", state 899, "((cache_dirty_urcu_active_readers.bitfield&(1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 403, "pan.___", state 899, "else"
	line 403, "pan.___", state 902, "(1)"
	line 403, "pan.___", state 903, "(1)"
	line 403, "pan.___", state 903, "(1)"
	line 401, "pan.___", state 908, "((i<1))"
	line 401, "pan.___", state 908, "((i>=1))"
	line 408, "pan.___", state 914, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 409, "pan.___", state 927, "(1)"
	line 409, "pan.___", state 928, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<( ((_pid<2)) -> (0) : (1) )))))"
	line 409, "pan.___", state 928, "else"
	line 409, "pan.___", state 931, "(1)"
	line 409, "pan.___", state 932, "(1)"
	line 409, "pan.___", state 932, "(1)"
	line 413, "pan.___", state 940, "(1)"
	line 413, "pan.___", state 941, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<( ((_pid<2)) -> (0) : (1) )))))"
	line 413, "pan.___", state 941, "else"
	line 413, "pan.___", state 944, "(1)"
	line 413, "pan.___", state 945, "(1)"
	line 413, "pan.___", state 945, "(1)"
	line 411, "pan.___", state 950, "((i<1))"
	line 411, "pan.___", state 950, "((i>=1))"
	line 418, "pan.___", state 957, "(1)"
	line 418, "pan.___", state 958, "(!((cache_dirty_generation_ptr.bitfield&(1<<( ((_pid<2)) -> (0) : (1) )))))"
	line 418, "pan.___", state 958, "else"
	line 418, "pan.___", state 961, "(1)"
	line 418, "pan.___", state 962, "(1)"
	line 418, "pan.___", state 962, "(1)"
	line 420, "pan.___", state 965, "(1)"
	line 420, "pan.___", state 965, "(1)"
	line 179, "pan.___", state 990, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 183, "pan.___", state 1003, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 1013, "(1)"
	line 164, "pan.___", state 1021, "(1)"
	line 168, "pan.___", state 1033, "(1)"
	line 175, "pan.___", state 1044, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))"
	line 183, "pan.___", state 1066, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))"
	line 160, "pan.___", state 1076, "(1)"
	line 164, "pan.___", state 1084, "(1)"
	line 168, "pan.___", state 1096, "(1)"
	line 175, "pan.___", state 1111, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 179, "pan.___", state 1120, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 183, "pan.___", state 1133, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<( ((_pid<2)) -> (0) : (1) ))))"
	line 160, "pan.___", state 1143, "(1)"
	line 164, "pan.___", state 1151, "(1)"
	line 168, "pan.___", state 1163, "(1)"
	line 702, "pan.___", state 1188, "-end-"
	(100 of 1188 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 12.8 seconds
pan: rate 113424.69 states/second
pan: avg transition delay 8.6181e-07 usec
cp .input.spin urcu_free_single_flip.spin.input
cp .input.spin.trail urcu_free_single_flip.spin.input.trail
make[1]: Leaving directory `/home/compudj/doc/userspace-rcu/formal-model/urcu'