| 1 | make[1]: Entering directory `/home/compudj/doc/userspace-rcu/formal-model/urcu' |
| 2 | rm -f pan* trail.out .input.spin* *.spin.trail .input.define |
| 3 | touch .input.define |
| 4 | cat .input.define >> pan.ltl |
| 5 | cat DEFINES >> pan.ltl |
| 6 | spin -f "!(`cat urcu_free.ltl | grep -v ^//`)" >> pan.ltl |
| 7 | cp urcu_free_no_rmb.define .input.define |
| 8 | cat .input.define > .input.spin |
| 9 | cat DEFINES >> .input.spin |
| 10 | cat urcu.spin >> .input.spin |
| 11 | rm -f .input.spin.trail |
| 12 | spin -a -X -N pan.ltl .input.spin |
| 13 | Exit-Status 0 |
| 14 | gcc -O2 -w -DHASH64 -o pan pan.c |
| 15 | ./pan -a -v -c1 -X -m10000000 -w20 |
| 16 | warning: for p.o. reduction to be valid the never claim must be stutter-invariant |
| 17 | (never claims generated from LTL formulae are stutter-invariant) |
| 18 | depth 0: Claim reached state 5 (line 742) |
| 19 | |
| 20 | (Spin Version 5.1.7 -- 23 December 2008) |
| 21 | + Partial Order Reduction |
| 22 | |
| 23 | Full statespace search for: |
| 24 | never claim + |
| 25 | assertion violations + (if within scope of claim) |
| 26 | acceptance cycles + (fairness disabled) |
| 27 | invalid end states - (disabled by never claim) |
| 28 | |
| 29 | State-vector 56 byte, depth reached 10519, errors: 0 |
| 30 | 20146 states, stored |
| 31 | 191615 states, matched |
| 32 | 211761 transitions (= stored+matched) |
| 33 | 711676 atomic steps |
| 34 | hash conflicts: 1222 (resolved) |
| 35 | |
| 36 | Stats on memory usage (in Megabytes): |
| 37 | 1.614 equivalent memory usage for states (stored*(State-vector + overhead)) |
| 38 | 1.509 actual memory usage for states (compression: 93.51%) |
| 39 | state-vector as stored = 51 byte + 28 byte overhead |
| 40 | 8.000 memory used for hash table (-w20) |
| 41 | 457.764 memory used for DFS stack (-m10000000) |
| 42 | 467.229 total actual memory usage |
| 43 | |
| 44 | unreached in proctype urcu_reader_sig |
| 45 | line 402, "pan.___", state 330, "(1)" |
| 46 | line 613, "pan.___", state 411, "-end-" |
| 47 | (2 of 411 states) |
| 48 | unreached in proctype urcu_writer |
| 49 | line 398, "pan.___", state 14, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 50 | line 407, "pan.___", state 46, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 51 | line 408, "pan.___", state 59, "(1)" |
| 52 | line 417, "pan.___", state 89, "(1)" |
| 53 | line 398, "pan.___", state 115, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 54 | line 408, "pan.___", state 160, "(1)" |
| 55 | line 651, "pan.___", state 213, "(1)" |
| 56 | line 174, "pan.___", state 222, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 57 | line 178, "pan.___", state 233, "(1)" |
| 58 | line 174, "pan.___", state 257, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))" |
| 59 | line 178, "pan.___", state 266, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<i)))" |
| 60 | line 182, "pan.___", state 279, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))" |
| 61 | line 174, "pan.___", state 296, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 62 | line 178, "pan.___", state 305, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 63 | line 182, "pan.___", state 318, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 64 | line 398, "pan.___", state 341, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 65 | line 402, "pan.___", state 357, "(1)" |
| 66 | line 407, "pan.___", state 373, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 67 | line 408, "pan.___", state 386, "(1)" |
| 68 | line 417, "pan.___", state 416, "(1)" |
| 69 | line 398, "pan.___", state 442, "(1)" |
| 70 | line 402, "pan.___", state 456, "(1)" |
| 71 | line 407, "pan.___", state 472, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 72 | line 417, "pan.___", state 515, "(1)" |
| 73 | line 402, "pan.___", state 556, "(1)" |
| 74 | line 407, "pan.___", state 572, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 75 | line 417, "pan.___", state 615, "(1)" |
| 76 | line 174, "pan.___", state 636, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 77 | line 174, "pan.___", state 638, "(1)" |
| 78 | line 178, "pan.___", state 645, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 79 | line 178, "pan.___", state 647, "(1)" |
| 80 | line 178, "pan.___", state 648, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 81 | line 178, "pan.___", state 648, "else" |
| 82 | line 176, "pan.___", state 653, "((j<1))" |
| 83 | line 176, "pan.___", state 653, "((j>=1))" |
| 84 | line 182, "pan.___", state 658, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 85 | line 182, "pan.___", state 660, "(1)" |
| 86 | line 182, "pan.___", state 661, "((cache_dirty_generation_ptr.bitfield&(1<<0)))" |
| 87 | line 182, "pan.___", state 661, "else" |
| 88 | line 174, "pan.___", state 671, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))" |
| 89 | line 174, "pan.___", state 673, "(1)" |
| 90 | line 178, "pan.___", state 680, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<i)))" |
| 91 | line 178, "pan.___", state 682, "(1)" |
| 92 | line 178, "pan.___", state 683, "((cache_dirty_urcu_active_readers.bitfield&(1<<i)))" |
| 93 | line 178, "pan.___", state 683, "else" |
| 94 | line 176, "pan.___", state 688, "((j<1))" |
| 95 | line 176, "pan.___", state 688, "((j>=1))" |
| 96 | line 182, "pan.___", state 693, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))" |
| 97 | line 182, "pan.___", state 695, "(1)" |
| 98 | line 182, "pan.___", state 696, "((cache_dirty_generation_ptr.bitfield&(1<<i)))" |
| 99 | line 182, "pan.___", state 696, "else" |
| 100 | line 192, "pan.___", state 701, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<i)))" |
| 101 | line 192, "pan.___", state 701, "else" |
| 102 | line 213, "pan.___", state 705, "((i<1))" |
| 103 | line 213, "pan.___", state 705, "((i>=1))" |
| 104 | line 174, "pan.___", state 710, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 105 | line 174, "pan.___", state 712, "(1)" |
| 106 | line 178, "pan.___", state 719, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 107 | line 178, "pan.___", state 721, "(1)" |
| 108 | line 178, "pan.___", state 722, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 109 | line 178, "pan.___", state 722, "else" |
| 110 | line 176, "pan.___", state 727, "((j<1))" |
| 111 | line 176, "pan.___", state 727, "((j>=1))" |
| 112 | line 182, "pan.___", state 732, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 113 | line 182, "pan.___", state 734, "(1)" |
| 114 | line 182, "pan.___", state 735, "((cache_dirty_generation_ptr.bitfield&(1<<0)))" |
| 115 | line 182, "pan.___", state 735, "else" |
| 116 | line 192, "pan.___", state 740, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 117 | line 192, "pan.___", state 740, "else" |
| 118 | line 220, "pan.___", state 741, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 119 | line 220, "pan.___", state 741, "else" |
| 120 | line 355, "pan.___", state 747, "((sighand_exec==1))" |
| 121 | line 355, "pan.___", state 747, "else" |
| 122 | line 361, "pan.___", state 750, "sighand_exec = 1" |
| 123 | line 398, "pan.___", state 763, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 124 | line 398, "pan.___", state 765, "(1)" |
| 125 | line 398, "pan.___", state 766, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 126 | line 398, "pan.___", state 766, "else" |
| 127 | line 398, "pan.___", state 769, "(1)" |
| 128 | line 402, "pan.___", state 777, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 129 | line 402, "pan.___", state 779, "(1)" |
| 130 | line 402, "pan.___", state 780, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 131 | line 402, "pan.___", state 780, "else" |
| 132 | line 402, "pan.___", state 783, "(1)" |
| 133 | line 402, "pan.___", state 784, "(1)" |
| 134 | line 402, "pan.___", state 784, "(1)" |
| 135 | line 400, "pan.___", state 789, "((i<1))" |
| 136 | line 400, "pan.___", state 789, "((i>=1))" |
| 137 | line 407, "pan.___", state 795, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 138 | line 408, "pan.___", state 808, "(1)" |
| 139 | line 408, "pan.___", state 809, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<0))))" |
| 140 | line 408, "pan.___", state 809, "else" |
| 141 | line 408, "pan.___", state 812, "(1)" |
| 142 | line 408, "pan.___", state 813, "(1)" |
| 143 | line 408, "pan.___", state 813, "(1)" |
| 144 | line 412, "pan.___", state 821, "(1)" |
| 145 | line 412, "pan.___", state 822, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<0))))" |
| 146 | line 412, "pan.___", state 822, "else" |
| 147 | line 412, "pan.___", state 825, "(1)" |
| 148 | line 412, "pan.___", state 826, "(1)" |
| 149 | line 412, "pan.___", state 826, "(1)" |
| 150 | line 410, "pan.___", state 831, "((i<1))" |
| 151 | line 410, "pan.___", state 831, "((i>=1))" |
| 152 | line 417, "pan.___", state 838, "(1)" |
| 153 | line 417, "pan.___", state 839, "(!((cache_dirty_generation_ptr.bitfield&(1<<0))))" |
| 154 | line 417, "pan.___", state 839, "else" |
| 155 | line 417, "pan.___", state 842, "(1)" |
| 156 | line 417, "pan.___", state 843, "(1)" |
| 157 | line 417, "pan.___", state 843, "(1)" |
| 158 | line 419, "pan.___", state 846, "(1)" |
| 159 | line 419, "pan.___", state 846, "(1)" |
| 160 | line 361, "pan.___", state 855, "sighand_exec = 1" |
| 161 | line 402, "pan.___", state 886, "(1)" |
| 162 | line 407, "pan.___", state 902, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 163 | line 417, "pan.___", state 945, "(1)" |
| 164 | line 402, "pan.___", state 983, "(1)" |
| 165 | line 407, "pan.___", state 999, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 166 | line 417, "pan.___", state 1042, "(1)" |
| 167 | line 398, "pan.___", state 1068, "(1)" |
| 168 | line 402, "pan.___", state 1082, "(1)" |
| 169 | line 407, "pan.___", state 1098, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 170 | line 417, "pan.___", state 1141, "(1)" |
| 171 | line 402, "pan.___", state 1182, "(1)" |
| 172 | line 407, "pan.___", state 1198, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 173 | line 417, "pan.___", state 1241, "(1)" |
| 174 | line 174, "pan.___", state 1262, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 175 | line 174, "pan.___", state 1264, "(1)" |
| 176 | line 178, "pan.___", state 1271, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 177 | line 178, "pan.___", state 1273, "(1)" |
| 178 | line 178, "pan.___", state 1274, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 179 | line 178, "pan.___", state 1274, "else" |
| 180 | line 176, "pan.___", state 1279, "((j<1))" |
| 181 | line 176, "pan.___", state 1279, "((j>=1))" |
| 182 | line 182, "pan.___", state 1284, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 183 | line 182, "pan.___", state 1286, "(1)" |
| 184 | line 182, "pan.___", state 1287, "((cache_dirty_generation_ptr.bitfield&(1<<0)))" |
| 185 | line 182, "pan.___", state 1287, "else" |
| 186 | line 174, "pan.___", state 1297, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))" |
| 187 | line 174, "pan.___", state 1299, "(1)" |
| 188 | line 178, "pan.___", state 1306, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<i)))" |
| 189 | line 178, "pan.___", state 1308, "(1)" |
| 190 | line 178, "pan.___", state 1309, "((cache_dirty_urcu_active_readers.bitfield&(1<<i)))" |
| 191 | line 178, "pan.___", state 1309, "else" |
| 192 | line 176, "pan.___", state 1314, "((j<1))" |
| 193 | line 176, "pan.___", state 1314, "((j>=1))" |
| 194 | line 182, "pan.___", state 1319, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))" |
| 195 | line 182, "pan.___", state 1321, "(1)" |
| 196 | line 182, "pan.___", state 1322, "((cache_dirty_generation_ptr.bitfield&(1<<i)))" |
| 197 | line 182, "pan.___", state 1322, "else" |
| 198 | line 192, "pan.___", state 1327, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<i)))" |
| 199 | line 192, "pan.___", state 1327, "else" |
| 200 | line 213, "pan.___", state 1331, "((i<1))" |
| 201 | line 213, "pan.___", state 1331, "((i>=1))" |
| 202 | line 174, "pan.___", state 1336, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 203 | line 174, "pan.___", state 1338, "(1)" |
| 204 | line 178, "pan.___", state 1345, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 205 | line 178, "pan.___", state 1347, "(1)" |
| 206 | line 178, "pan.___", state 1348, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 207 | line 178, "pan.___", state 1348, "else" |
| 208 | line 176, "pan.___", state 1353, "((j<1))" |
| 209 | line 176, "pan.___", state 1353, "((j>=1))" |
| 210 | line 182, "pan.___", state 1358, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 211 | line 182, "pan.___", state 1360, "(1)" |
| 212 | line 182, "pan.___", state 1361, "((cache_dirty_generation_ptr.bitfield&(1<<0)))" |
| 213 | line 182, "pan.___", state 1361, "else" |
| 214 | line 192, "pan.___", state 1366, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 215 | line 192, "pan.___", state 1366, "else" |
| 216 | line 220, "pan.___", state 1367, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 217 | line 220, "pan.___", state 1367, "else" |
| 218 | line 355, "pan.___", state 1373, "((sighand_exec==1))" |
| 219 | line 355, "pan.___", state 1373, "else" |
| 220 | line 361, "pan.___", state 1376, "sighand_exec = 1" |
| 221 | line 398, "pan.___", state 1389, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 222 | line 398, "pan.___", state 1391, "(1)" |
| 223 | line 398, "pan.___", state 1392, "((cache_dirty_urcu_gp_ctr.bitfield&(1<<0)))" |
| 224 | line 398, "pan.___", state 1392, "else" |
| 225 | line 398, "pan.___", state 1395, "(1)" |
| 226 | line 402, "pan.___", state 1403, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 227 | line 402, "pan.___", state 1405, "(1)" |
| 228 | line 402, "pan.___", state 1406, "((cache_dirty_urcu_active_readers.bitfield&(1<<0)))" |
| 229 | line 402, "pan.___", state 1406, "else" |
| 230 | line 402, "pan.___", state 1409, "(1)" |
| 231 | line 402, "pan.___", state 1410, "(1)" |
| 232 | line 402, "pan.___", state 1410, "(1)" |
| 233 | line 400, "pan.___", state 1415, "((i<1))" |
| 234 | line 400, "pan.___", state 1415, "((i>=1))" |
| 235 | line 407, "pan.___", state 1421, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 236 | line 408, "pan.___", state 1434, "(1)" |
| 237 | line 408, "pan.___", state 1435, "(!((cache_dirty_urcu_gp_ctr.bitfield&(1<<0))))" |
| 238 | line 408, "pan.___", state 1435, "else" |
| 239 | line 408, "pan.___", state 1438, "(1)" |
| 240 | line 408, "pan.___", state 1439, "(1)" |
| 241 | line 408, "pan.___", state 1439, "(1)" |
| 242 | line 412, "pan.___", state 1447, "(1)" |
| 243 | line 412, "pan.___", state 1448, "(!((cache_dirty_urcu_active_readers.bitfield&(1<<0))))" |
| 244 | line 412, "pan.___", state 1448, "else" |
| 245 | line 412, "pan.___", state 1451, "(1)" |
| 246 | line 412, "pan.___", state 1452, "(1)" |
| 247 | line 412, "pan.___", state 1452, "(1)" |
| 248 | line 410, "pan.___", state 1457, "((i<1))" |
| 249 | line 410, "pan.___", state 1457, "((i>=1))" |
| 250 | line 417, "pan.___", state 1464, "(1)" |
| 251 | line 417, "pan.___", state 1465, "(!((cache_dirty_generation_ptr.bitfield&(1<<0))))" |
| 252 | line 417, "pan.___", state 1465, "else" |
| 253 | line 417, "pan.___", state 1468, "(1)" |
| 254 | line 417, "pan.___", state 1469, "(1)" |
| 255 | line 417, "pan.___", state 1469, "(1)" |
| 256 | line 419, "pan.___", state 1472, "(1)" |
| 257 | line 419, "pan.___", state 1472, "(1)" |
| 258 | line 361, "pan.___", state 1481, "sighand_exec = 1" |
| 259 | line 178, "pan.___", state 1506, "(1)" |
| 260 | line 182, "pan.___", state 1517, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 261 | line 174, "pan.___", state 1530, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<i)))" |
| 262 | line 178, "pan.___", state 1539, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<i)))" |
| 263 | line 182, "pan.___", state 1552, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<i)))" |
| 264 | line 174, "pan.___", state 1569, "cache_dirty_urcu_gp_ctr.bitfield = (cache_dirty_urcu_gp_ctr.bitfield&~((1<<0)))" |
| 265 | line 178, "pan.___", state 1578, "cache_dirty_urcu_active_readers.bitfield = (cache_dirty_urcu_active_readers.bitfield&~((1<<0)))" |
| 266 | line 182, "pan.___", state 1591, "cache_dirty_generation_ptr.bitfield = (cache_dirty_generation_ptr.bitfield&~((1<<0)))" |
| 267 | line 701, "pan.___", state 1632, "-end-" |
| 268 | (167 of 1632 states) |
| 269 | unreached in proctype :init: |
| 270 | (0 of 46 states) |
| 271 | unreached in proctype :never: |
| 272 | line 747, "pan.___", state 8, "-end-" |
| 273 | (1 of 8 states) |
| 274 | |
| 275 | pan: elapsed time 0.15 seconds |
| 276 | pan: rate 134306.67 states/second |
| 277 | pan: avg transition delay 7.0835e-07 usec |
| 278 | cp .input.spin urcu_free_no_rmb.spin.input |
| 279 | cp .input.spin.trail urcu_free_no_rmb.spin.input.trail |
| 280 | make[1]: Leaving directory `/home/compudj/doc/userspace-rcu/formal-model/urcu' |