Trace number 371989

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
March KS 2007-02-08SAT 3.2835 3.28899

General information on the benchmark

Namerandom/2+p/p0.9/v1170/
unif2p-p0.9-v1170-c4235-S30263233-06-SAT.cnf
MD5SUM19bf4df3850e38181cad28d3dbbeced7
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.048992
Satisfiable
(Un)Satisfiability was proved
Number of variables1170
Number of clauses4234
Sum of the clauses size12279
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2423
Number of clauses of size 33811
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.04	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.04	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.04	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.04	c main()::
0.00/0.04	c initFormula():: searching for DIMACS p-line....
0.00/0.04	c initFormula():: the DIMACS p-line indicates a CNF of 1170 variables and 4234 clauses.
0.00/0.04	c parseCNF():: parsing....
0.00/0.04	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.04	c runParser():: parsing was successful, warming up engines...
0.00/0.04	c simplify_formula():: removed 0 tautological, 57 satisfied and 0 duplicate clauses
0.00/0.04	c preprocessing fase I completed:: there are now 1159 free variables and 4177 clauses.
0.00/0.04	c stat :: sign balance is biased by 0.611
0.00/0.04	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.04	c using 3-SAT heuristics (occurence based diff)
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 85 duplicate clauses
0.00/0.04	c resolvent_look() :: found 50 resolvents
0.00/0.04	c lessRedundantTransformation():: nothing to be done.
0.00/0.04	c transformTo3SAT():: you gave me 1170 variables and 4227 clauses.
0.00/0.04	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.04	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.04	c transformTo3SAT():: the transformation yielded 1170 variabels and 4227 clauses.
0.00/0.04	c main():: clause / variable ratio: ( 4227 / 1170 ) = 3.61
0.00/0.04	c longest clause has size 3
0.00/0.04	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.04	c dynamic_preselect_setsize :: off
0.00/0.04	c suggested doublelook initial :: 0
0.00/0.04	c main():: all systems go!
0.00/0.04	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| 0 NC: 422 JD: 41
1.19/1.23	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |*************************************************************
c |**************************************************************
c |***************************************************************
3.19/3.28	c solution bin :: 00000000000000000000000000000000
3.19/3.28	c direction branchin :: current_rights = 4
3.19/3.28	
c |***************************************************************
3.19/3.28	c
3.19/3.28	c main():: nodeCount: 1747
3.19/3.28	c main():: dead ends in main: 4
3.19/3.28	c main():: lookAheadCount: 391124
3.19/3.28	c main():: unitResolveCount: 29193
3.19/3.28	c main():: time=3.270000
3.19/3.28	c main():: necessary_assignments: 780
3.19/3.28	c main():: bin_sat: 0, bin_unsat 0
3.19/3.28	c main():: doublelook: #: 8771, succes #: 6333
3.19/3.28	c main():: doublelook: overall 2.270 of all possible doublelooks executed
3.19/3.28	c main():: doublelook: succesrate: 72.204, average DL_trigger: 13148.868
3.19/3.28	c main():: SOLUTION VERIFIED :-)
3.19/3.28	s SATISFIABLE
3.19/3.28	v 1 -2 -3 4 5 6 7 8 9 -10 11 12 -13 -14 -15 16 -17 18 19 20 21 -22 23 -24 25 26 27 28 29 -30 31 32 33 34 -35 36 -37 38 -39 -40 -41 -42 43 44 45 -46 -47 48 49 50 51 52 53 -54 -55 -56 57 58 -59 -60 61 -62 63 64 65 66 -67 -68 69 -70 -71 -72 -73 -74 -75 -76 77 -78 79 -80 -81 82 -83 84 85 -86 87 88 -89 -90 91 92 -93 94 -95 96 97 -98 -99 -100 -101 -102 -103 -104 -105 106 -107 -108 109 110 -111 -112 -113 -114 115 116 -117 118 119 120 121 122 123 124 125 -126 127 -128 -129 130 -131 132 133 -134 135 -136 -137 138 139 -140 -141 -142 143 -144 145 146 147 148 -149 150 151 152 153 -154 155 -156 -157 -158 159 160 -161 -162 163 -164 165 166 167 168 169 170 -171 172 -173 -174 175 -176 177 -178 179 -180 181 -182 183 184 -185 -186 187 188 189 -190 -191 192 193 -194 -195 -196 197 -198 199 -200 201 -202 203 204 205 -206 207 208 -209 210 211 212 -213 -214 -215 216 -217 218 219 -220 221 -222 223 224 -225 226 227 228 229 -230 -231 232 233 -234 -235 236 -237 238 -239 -240 241 242 243 244 245 -246 -247 248 -249 250 251 -252 -253 -254 255 -256 257 258 259 260 -261 262 263 264 -265 266 267 268 -269 270 271 -272 273 -274 275 276 277 278 279 280 281 282 283 284 285 286 287 -288 289 290 -291 292 293 294 295 296 297 298 299 300 301 -302 303 -304 -305 -306 307 308 309 -310 -311 312 313 314 315 316 317 -318 319 -320 321 322 323 324 -325 326 -327 -328 -329 330 331 332 333 334 335 -336 337 338 -339 -340 -341 342 -343 344 345 346 -347 -348 349 350 -351 -352 353 354 -355 356 357 -358 359 360 361 -362 363 -364 -365 -366 367 -368 369 370 371 372 -373 374 375 376 377 -378 -379 380 -381 -382 383 -384 385 386 -387 388 389 -390 391 -392 393 394 395 396 397 398 -399 400 -401 402 -403 404 -405 406 407 408 409 -410 -411 -412 -413 414 415 -416 417 418 419 420 -421 -422 -423 -424 -425 426 -427 428 -429 -430 431 432 -433 434 435 436 -437 -438 -439 -440 -441 442 -443 444 -445 446 -447 -448 -449 450 451 -452 453 -454 455 456 -457 458 -459 460 461 -462 463 464 465 466 -467 468 469 470 -471 -472 -473 474 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-921 922 923 -924 925 926 -927 -928 929 -930 931 932 -933 934 -935 -936 937 938 939 940 941 -942 -943 944 945 946 947 -948 949 950 951 -952 953 954 955 -956 957 958 -959 960 -961 962 963 -964 -965 966 -967 968 -969 -970 971 972 973 -974 975 -976 977 978 979 980 981 -982 983 984 985 986 -987 988 -989 990 -991 -992 -993 994 -995 -996 997 -998 999 -1000 -1001 -1002 -1003 1004 -1005 -1006 1007 -1008 1009 -1010 1011 -1012 1013 1014 1015 1016 -1017 1018 -1019 -1020 -1021 -1022 -1023 -1024 -1025 -1026 1027 1028 -1029 -1030 1031 -1032 1033 1034 -1035 -1036 1037 1038 1039 1040 1041 -1042 1043 1044 1045 1046 -1047 1048 -1049 1050 -1051 1052 1053 -1054 1055 1056 -1057 -1058 1059 -1060 1061 -1062 -1063 1064 -1065 1066 1067 -1068 -1069 1070 -1071 1072 1073 1074 1075 -1076 -1077 -1078 -1079 1080 1081 1082 -1083 1084 -1085 1086 1087 1088 -1089 -1090 1091 -1092 1093 1094 -1095 1096 1097 1098 1099 1100 -1101 -1102 -1103 -1104 -1105 -1106 -1107 1108 1109 1110 1111 1112 -1113 -1114 -1115 -1116 -1117 1118 1119 -1120 -1121 -1122 1123 1124 1125 1126 -1127 -1128 -1129 1130 -1131 1132 1133 1134 -1135 1136 1137 -1138 1139 1140 -1141 -1142 -1143 1144 1145 1146 -1147 1148 -1149 1150 -1151 -1152 1153 1154 -1155 -1156 1157 -1158 1159 1160 -1161 -1162 1163 -1164 -1165 -1166 1167 -1168 -1169 1170 0

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node3/watcher-371989-1177549280 -o ROOT/results/node3/solver-371989-1177549280 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/371989-1177549280/march_ks /tmp/evaluation/371989-1177549280/instance-371989-1177549280.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.92 0.98 0.90 3/83 16018
/proc/meminfo: memFree=1675056/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=788 CPUtime=0
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 113 0 0 0 0 0 0 0 18 0 1 0 230965771 806912 99 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134684029 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 197 99 47 123 0 72 0

[startup+0.051169 s]
/proc/loadavg: 0.92 0.98 0.90 3/83 16018
/proc/meminfo: memFree=1675056/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2128 CPUtime=0.04
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 442 0 0 0 4 0 0 0 18 0 1 0 230965771 2179072 425 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134598018 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 532 425 73 123 0 407 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 2128

[startup+0.101178 s]
/proc/loadavg: 0.92 0.98 0.90 3/83 16018
/proc/meminfo: memFree=1675056/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2128 CPUtime=0.09
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 451 0 0 0 9 0 0 0 18 0 1 0 230965771 2179072 434 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 532 434 73 123 0 407 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 2128

[startup+0.30121 s]
/proc/loadavg: 0.92 0.98 0.90 3/83 16018
/proc/meminfo: memFree=1675056/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2260 CPUtime=0.29
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 473 0 0 0 29 0 0 0 19 0 1 0 230965771 2314240 456 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 565 456 73 123 0 440 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 2260

[startup+0.702276 s]
/proc/loadavg: 0.92 0.98 0.90 3/83 16018
/proc/meminfo: memFree=1675056/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2260 CPUtime=0.69
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 488 0 0 0 69 0 0 0 22 0 1 0 230965771 2314240 471 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134538186 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 565 471 73 123 0 440 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 2260

[startup+1.50141 s]
/proc/loadavg: 0.92 0.98 0.90 2/84 16019
/proc/meminfo: memFree=1673320/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2392 CPUtime=1.49
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 509 0 0 0 149 0 0 0 25 0 1 0 230965771 2449408 492 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134525608 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 598 492 73 123 0 473 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 2392

[startup+3.10167 s]
/proc/loadavg: 0.93 0.98 0.90 2/84 16019
/proc/meminfo: memFree=1673128/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2528 CPUtime=3.09
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 531 0 0 0 309 0 0 0 25 0 1 0 230965771 2588672 514 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134548611 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 632 514 73 123 0 507 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2528

Solver just ended. Dumping a history of the last processes samples

[startup+3.20168 s]
/proc/loadavg: 0.93 0.98 0.90 2/84 16025
/proc/meminfo: memFree=1673128/2055920 swapFree=4138796/4192956
[pid=16018] ppid=16016 vsize=2528 CPUtime=3.19
/proc/16018/stat : 16018 (march_ks) R 16016 16018 15738 0 -1 4194304 532 0 0 0 319 0 0 0 25 0 1 0 230965771 2588672 515 18446744073709551615 134512640 135019032 4294956672 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/16018/statm: 632 515 73 123 0 507 0
Current children cumulated CPU time (s) 3.19
Current children cumulated vsize (KiB) 2528

Child status: 10
Real time (s): 3.28899
CPU time (s): 3.2835
CPU user time (s): 3.2785
CPU system time (s): 0.004999
CPU usage (%): 99.833
Max. virtual memory (cumulated for all children) (KiB): 2528

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.2785
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 539
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 10
involuntary context switches= 14

runsolver used 0.004999 second user time and 0.015997 second system time

The end

Launcher Data (download as text)

Begin job on node3 on Thu Apr 26 01:01:20 UTC 2007

IDJOB= 371989
IDBENCH= 20283
IDSOLVER= 180
FILE ID= node3/371989-1177549280

PBS_JOBID= 4696622

Free space on /tmp= 66419 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.9/v1170/unif2p-p0.9-v1170-c4235-S30263233-06-SAT.cnf
COMMAND LINE= /tmp/evaluation/371989-1177549280/march_ks /tmp/evaluation/371989-1177549280/instance-371989-1177549280.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node3/watcher-371989-1177549280 -o ROOT/results/node3/solver-371989-1177549280 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/371989-1177549280/march_ks /tmp/evaluation/371989-1177549280/instance-371989-1177549280.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  19bf4df3850e38181cad28d3dbbeced7

RANDOM SEED= 716738609

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node3.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.270
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.270
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1675464 kB
Buffers:         44216 kB
Cached:         267320 kB
SwapCached:      17720 kB
Active:         134756 kB
Inactive:       201404 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1675464 kB
SwapTotal:     4192956 kB
SwapFree:      4138796 kB
Dirty:            2488 kB
Writeback:           0 kB
Mapped:          31164 kB
Slab:            29428 kB
Committed_AS:  6135828 kB
PageTables:       2004 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66419 MiB

End job on node3 on Thu Apr 26 01:01:24 UTC 2007