Trace number 1521892

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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
iPAWS 2009-03-22SAT 1.02884 1.02996

General information on the benchmark

NameRANDOM/LARGE/3SAT/UNKNOWN/2000/
unif-k3-r4.2-v2000-c8400-S1337875718-086.cnf
MD5SUM05f00f0c3f7e171627ff97eb0175accd
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.58591
Satisfiable
(Un)Satisfiability was proved
Number of variables2000
Number of clauses8400
Sum of the clauses size25200
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 38400
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.00/1.02	s SATISFIABLE
1.00/1.02	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 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1.00/1.02	c input file instance-1521892-1238387906.cnf, flips 534230

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1521892-1238387906/watcher-1521892-1238387906 -o /tmp/evaluation-result-1521892-1238387906/solver-1521892-1238387906 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1521892-1238387906.cnf 616260657 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 485 0 0 0 0 0 0 0 18 0 1 0 1111456794 343977984 469 1992294400 134512640 135114423 4294956224 18446744073709551615 134736310 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 469 54 146 0 83831 0

[startup+0.0746361 s]
/proc/loadavg: 0.92 0.98 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0.07
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 7 0 0 0 18 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134517031 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 335916

[startup+0.102638 s]
/proc/loadavg: 0.92 0.98 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0.09
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 9 0 0 0 18 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134554751 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 335916

[startup+0.302664 s]
/proc/loadavg: 0.92 0.98 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0.29
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 29 0 0 0 19 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134547179 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 335916

[startup+0.702717 s]
/proc/loadavg: 0.92 0.98 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0.69
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 69 0 0 0 23 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134514774 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 335916

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

[startup+0.901744 s]
/proc/loadavg: 0.92 0.98 0.99 2/64 23232
/proc/meminfo: memFree=1773096/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=0.89
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 89 0 0 0 25 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134515552 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 0.89
Current children cumulated vsize (KiB) 335916

[startup+1.00176 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 23233
/proc/meminfo: memFree=1769120/2055920 swapFree=4177692/4192956
[pid=23232] ppid=23230 vsize=335916 CPUtime=1
/proc/23232/stat : 23232 (iPAWS) R 23230 23232 23103 0 -1 4194304 1062 0 0 0 100 0 0 0 25 0 1 0 1111456794 343977984 1046 1992294400 134512640 135114423 4294956224 18446744073709551615 134514774 0 0 4096 0 0 0 0 17 1 0 0
/proc/23232/statm: 83979 1046 57 146 0 83831 0
Current children cumulated CPU time (s) 1
Current children cumulated vsize (KiB) 335916

Child status: 0
Real time (s): 1.02996
CPU time (s): 1.02884
CPU user time (s): 1.02584
CPU system time (s): 0.002999
CPU usage (%): 99.8911
Max. virtual memory (cumulated for all children) (KiB): 335916

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.02584
system time used= 0.002999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1070
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= 2
involuntary context switches= 0

runsolver used 0.002999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node13 at 2009-03-30 06:38:26
IDJOB=1521892
IDBENCH=70287
IDSOLVER=516
FILE ID=node13/1521892-1238387906
PBS_JOBID= 9061356
Free space on /tmp= 66396 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/3SAT/UNKNOWN/2000/unif-k3-r4.2-v2000-c8400-S1337875718-086.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1521892-1238387906/watcher-1521892-1238387906 -o /tmp/evaluation-result-1521892-1238387906/solver-1521892-1238387906 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1521892-1238387906.cnf 616260657

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 05f00f0c3f7e171627ff97eb0175accd
RANDOM SEED=616260657

node13.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.240
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		: 3000.240
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:       1773576 kB
Buffers:         58416 kB
Cached:         152508 kB
SwapCached:       9056 kB
Active:         146940 kB
Inactive:        74372 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1773576 kB
SwapTotal:     4192956 kB
SwapFree:      4177692 kB
Dirty:             816 kB
Writeback:           0 kB
Mapped:          16096 kB
Slab:            47000 kB
Committed_AS:  2977696 kB
PageTables:       1464 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= 66396 MiB
End job on node13 at 2009-03-30 06:38:27