Trace number 310909

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 1.38779 1.38854

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
MD5SUMe5673a7c266f877ed2c58f7b531e89ad
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.052991
Satisfiable
(Un)Satisfiability was proved
Number of variables1295
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.05	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.05	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
0.00/0.05	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
0.00/0.05	c main()::
0.00/0.05	c initFormula():: searching for DIMACS p-line....
0.00/0.05	c initFormula():: the DIMACS p-line indicates a CNF of 1295 variables and 4026 clauses.
0.00/0.05	c parseCNF():: parsing....
0.00/0.05	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.05	c runParser():: parsing was successful, warming up engines...
0.00/0.05	c find_and_remove_tautogolies():: found and removed 1 tautologies
0.00/0.05	c simplify_formula():: removed 0 tautological, 163 satisfied and 0 duplicate clauses
0.00/0.05	c preprocessing fase I completed:: there are now 1260 free variables and 3863 clauses.
0.00/0.05	c stat :: sign balance is biased by 0.676
0.00/0.05	c shorten_equivalence(): average equivalence length reduced from nan to nan
0.00/0.05	c using 3-SAT heuristics (occurence based diff)
0.00/0.05	c longest clause has size 3
0.00/0.05	c simplify_formula():: removed 0 tautological, 0 satisfied and 44 duplicate clauses
0.00/0.05	c resolvent_look() :: found 28 resolvents
0.00/0.05	c lessRedundantTransformation():: nothing to be done.
0.00/0.05	c transformTo3SAT():: you gave me 1295 variables and 3891 clauses.
0.00/0.05	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.05	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.05	c transformTo3SAT():: the transformation yielded 1295 variabels and 3891 clauses.
0.00/0.05	c main():: clause / variable ratio: ( 3891 / 1295 ) = 3.00
0.00/0.05	c longest clause has size 3
0.00/0.05	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.05	c dynamic_preselect_setsize :: on
0.00/0.05	c suggested doublelook initial :: 0
0.00/0.05	c main():: all systems go!
0.00/0.05	c |----------------------------------------------------------------|
1.33/1.38	c solution bin :: .00000010000110001001000000000000
1.33/1.38	c direction branchin :: current_rights = 5
1.33/1.38	
c |
1.33/1.38	c
1.33/1.38	c main():: nodeCount: 309
1.33/1.38	c main():: dead ends in main: 0
1.33/1.38	c main():: lookAheadCount: 198077
1.33/1.38	c main():: unitResolveCount: 5254
1.33/1.38	c main():: time=1.380000
1.33/1.38	c main():: necessary_assignments: 111
1.33/1.38	c main():: bin_sat: 0, bin_unsat 0
1.33/1.38	c main():: doublelook: #: 2152, succes #: 1736
1.33/1.38	c main():: doublelook: overall 1.094 of all possible doublelooks executed
1.33/1.38	c main():: doublelook: succesrate: 80.669, average DL_trigger: 9045.300
1.33/1.38	c main():: SOLUTION VERIFIED :-)
1.33/1.38	s SATISFIABLE
1.33/1.38	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 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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 -1171 -1172 1173 -1174 -1175 1176 1177 1178 -1179 -1180 1181 1182 1183 -1184 -1185 1186 -1187 1188 1189 -1190 1191 1192 1193 -1194 1195 1196 -1197 1198 -1199 -1200 1201 1202 1203 1204 1205 -1206 1207 1208 -1209 1210 1211 -1212 1213 1214 1215 1216 -1217 -1218 1219 1220 1221 1222 -1223 -1224 1225 1226 1227 1228 1229 -1230 -1231 -1232 -1233 1234 -1235 1236 1237 1238 -1239 1240 1241 -1242 -1243 1244 -1245 1246 -1247 1248 -1249 1250 1251 -1252 -1253 -1254 1255 1256 -1257 1258 1259 1260 1261 1262 1263 -1264 -1265 1266 1267 -1268 1269 -1270 1271 1272 1273 1274 1275 1276 -1277 1278 1279 -1280 -1281 1282 -1283 -1284 1285 1286 -1287 -1288 1289 -1290 -1291 -1292 1293 -1294 1295 0

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node38/watcher-310909-1172562875 -o ROOT/results/node38/solver-310909-1172562875 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310909-1172562875/march_ks /tmp/evaluation/310909-1172562875/instance-310909-1172562875.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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: 1.00 0.99 1.00 3/64 29297
/proc/meminfo: memFree=1873448/2055920 swapFree=4183692/4192956
[pid=29297] ppid=29295 vsize=788 CPUtime=0
/proc/29297/stat : 29297 (march_ks) R 29295 29297 28181 0 -1 4194304 115 0 0 0 0 0 0 0 18 0 1 0 276243337 806912 100 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134662703 0 0 4096 0 0 0 0 17 1 0 0
/proc/29297/statm: 197 100 47 123 0 72 0

[startup+0.106642 s]
/proc/loadavg: 1.00 0.99 1.00 3/64 29297
/proc/meminfo: memFree=1873448/2055920 swapFree=4183692/4192956
[pid=29297] ppid=29295 vsize=2212 CPUtime=0.1
/proc/29297/stat : 29297 (march_ks) R 29295 29297 28181 0 -1 4194304 465 0 0 0 10 0 0 0 18 0 1 0 276243337 2265088 447 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526443 0 0 4096 0 0 0 0 17 1 0 0
/proc/29297/statm: 553 447 73 123 0 428 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2212

[startup+0.514688 s]
/proc/loadavg: 1.00 0.99 1.00 3/64 29297
/proc/meminfo: memFree=1873448/2055920 swapFree=4183692/4192956
[pid=29297] ppid=29295 vsize=2200 CPUtime=0.51
/proc/29297/stat : 29297 (march_ks) R 29295 29297 28181 0 -1 4194304 470 0 0 0 51 0 0 0 21 0 1 0 276243337 2252800 452 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134542788 0 0 4096 0 0 0 0 17 1 0 0
/proc/29297/statm: 550 452 73 123 0 425 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2200

[startup+1.33478 s]
/proc/loadavg: 1.00 0.99 1.00 2/65 29298
/proc/meminfo: memFree=1871904/2055920 swapFree=4183692/4192956
[pid=29297] ppid=29295 vsize=2332 CPUtime=1.33
/proc/29297/stat : 29297 (march_ks) R 29295 29297 28181 0 -1 4194304 494 0 0 0 133 0 0 0 25 0 1 0 276243337 2387968 476 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 1 0 0
/proc/29297/statm: 583 476 73 123 0 458 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2332

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

[startup+1.33478 s]
/proc/loadavg: 1.00 0.99 1.00 2/65 29298
/proc/meminfo: memFree=1871904/2055920 swapFree=4183692/4192956
[pid=29297] ppid=29295 vsize=2332 CPUtime=1.33
/proc/29297/stat : 29297 (march_ks) R 29295 29297 28181 0 -1 4194304 494 0 0 0 133 0 0 0 25 0 1 0 276243337 2387968 476 18446744073709551615 134512640 135019032 4294956704 18446744073709551615 134526435 0 0 4096 0 0 0 0 17 1 0 0
/proc/29297/statm: 583 476 73 123 0 458 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 2332

Child status: 10
Real time (s): 1.38854
CPU time (s): 1.38779
CPU user time (s): 1.38279
CPU system time (s): 0.004999
CPU usage (%): 99.9456
Max. virtual memory (cumulated for all children) (KiB): 2332

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.38279
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= 509
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= 8
involuntary context switches= 2

runsolver used 0.005999 second user time and 0.006998 second system time

The end

Launcher Data (download as text)

Begin job on node38 on Tue Feb 27 07:54:35 UTC 2007

IDJOB= 310909
IDBENCH= 20299
IDSOLVER= 111
FILE ID= node38/310909-1172562875

PBS_JOBID= 3971865

Free space on /tmp= 66558 MiB

SOLVER NAME= March KS 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1762612346-15-SAT.cnf
COMMAND LINE= /tmp/evaluation/310909-1172562875/march_ks /tmp/evaluation/310909-1172562875/instance-310909-1172562875.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node38/watcher-310909-1172562875 -o ROOT/results/node38/solver-310909-1172562875 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310909-1172562875/march_ks /tmp/evaluation/310909-1172562875/instance-310909-1172562875.cnf            

META MD5SUM SOLVER= cd0143c15836d32fe9acb8d523a59b67
MD5SUM BENCH=  e5673a7c266f877ed2c58f7b531e89ad

RANDOM SEED= 628885132

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node38.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		: 3000.233
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		: 3000.233
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:       1873856 kB
Buffers:         22884 kB
Cached:         111960 kB
SwapCached:       3468 kB
Active:          74156 kB
Inactive:        70620 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1873856 kB
SwapTotal:     4192956 kB
SwapFree:      4183692 kB
Dirty:            2320 kB
Writeback:           0 kB
Mapped:          15348 kB
Slab:            23252 kB
Committed_AS:   577572 kB
PageTables:       1468 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= 66558 MiB

End job on node38 on Tue Feb 27 07:54:37 UTC 2007