Trace number 1522680

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
Hybrid2 2009-03-22SAT 1.9497 1.94898

General information on the benchmark

NameRANDOM/LARGE/3SAT/UNKNOWN/2000/
unif-k3-r4.2-v2000-c8400-S1075551507-050.cnf
MD5SUMe6c4aa9150c7e5a44a3dd14ff53afc9f
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.233964
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 

1.89/1.94	c try 1 flip j 1128991
1.89/1.94	c A solution is found
1.89/1.94	s SATISFIABLE
1.89/1.94	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 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1.89/1.94	v 0 
1.89/1.94	c Done (mycputime is 1.920 seconds)

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-1522680-1238388727/watcher-1522680-1238388727 -o /tmp/evaluation-result-1522680-1238388727/solver-1522680-1238388727 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/Hybrid2 HOME/instance-1522680-1238388727.cnf 671336644 

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: 0.99 0.98 1.00 3/64 19273
/proc/meminfo: memFree=1042424/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=450944 CPUtime=0
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 114 0 0 0 0 0 0 0 18 0 1 0 1111538307 461766656 99 1992294400 134512640 135106774 4294956208 18446744073709551615 134520611 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 112736 100 53 145 0 111612 0

[startup+0.019334 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 19273
/proc/meminfo: memFree=1042424/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=451468 CPUtime=0.01
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 286 0 0 0 1 0 0 0 18 0 1 0 1111538307 462303232 270 1992294400 134512640 135106774 4294956208 18446744073709551615 134524034 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 112867 270 53 145 0 111743 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 451468

[startup+0.101341 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 19273
/proc/meminfo: memFree=1042424/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=455632 CPUtime=0.09
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 426 0 0 0 9 0 0 0 18 0 1 0 1111538307 466567168 410 1992294400 134512640 135106774 4294956208 18446744073709551615 134528475 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 113908 410 56 145 0 112784 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 455632

[startup+0.301358 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 19273
/proc/meminfo: memFree=1042424/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=455632 CPUtime=0.29
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 426 0 0 0 29 0 0 0 19 0 1 0 1111538307 466567168 410 1992294400 134512640 135106774 4294956208 18446744073709551615 134526644 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 113908 410 56 145 0 112784 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 455632

[startup+0.701391 s]
/proc/loadavg: 0.99 0.98 1.00 3/64 19273
/proc/meminfo: memFree=1042424/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=455632 CPUtime=0.69
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 426 0 0 0 69 0 0 0 22 0 1 0 1111538307 466567168 410 1992294400 134512640 135106774 4294956208 18446744073709551615 134527227 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 113908 410 56 145 0 112784 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 455632

[startup+1.50146 s]
/proc/loadavg: 0.99 0.98 1.00 2/65 19274
/proc/meminfo: memFree=1040816/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=455632 CPUtime=1.49
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 426 0 0 0 149 0 0 0 25 0 1 0 1111538307 466567168 410 1992294400 134512640 135106774 4294956208 18446744073709551615 134518527 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 113908 410 56 145 0 112784 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 455632

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

[startup+1.90149 s]
/proc/loadavg: 0.99 0.98 1.00 2/65 19274
/proc/meminfo: memFree=1040816/2055920 swapFree=4167280/4192956
[pid=19273] ppid=19271 vsize=455632 CPUtime=1.89
/proc/19273/stat : 19273 (Hybrid2) R 19271 19273 19109 0 -1 4194304 426 0 0 0 189 0 0 0 25 0 1 0 1111538307 466567168 410 1992294400 134512640 135106774 4294956208 18446744073709551615 134518193 0 0 4096 0 0 0 0 17 1 0 0
/proc/19273/statm: 113908 410 56 145 0 112784 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 455632

Child status: 10
Real time (s): 1.94898
CPU time (s): 1.9497
CPU user time (s): 1.9457
CPU system time (s): 0.003999
CPU usage (%): 100.037
Max. virtual memory (cumulated for all children) (KiB): 455632

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.9457
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 443
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= 3

runsolver used 0.000999 second user time and 0.010998 second system time

The end

Launcher Data 

Begin job on node31 at 2009-03-30 06:52:07
IDJOB=1522680
IDBENCH=70291
IDSOLVER=530
FILE ID=node31/1522680-1238388727
PBS_JOBID= 9061361
Free space on /tmp= 66424 MiB

SOLVER NAME= Hybrid2 2009-03-22
BENCH NAME= SAT09/RANDOM/LARGE/3SAT/UNKNOWN/2000/unif-k3-r4.2-v2000-c8400-S1075551507-050.cnf
COMMAND LINE= HOME/Hybrid2 BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522680-1238388727/watcher-1522680-1238388727 -o /tmp/evaluation-result-1522680-1238388727/solver-1522680-1238388727 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/Hybrid2 HOME/instance-1522680-1238388727.cnf 671336644

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

MD5SUM BENCH= e6c4aa9150c7e5a44a3dd14ff53afc9f
RANDOM SEED=671336644

node31.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		: 3000.214
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		: 3000.214
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:       1042840 kB
Buffers:        111784 kB
Cached:         784220 kB
SwapCached:      18664 kB
Active:          32560 kB
Inactive:       883592 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1042840 kB
SwapTotal:     4192956 kB
SwapFree:      4167280 kB
Dirty:            4720 kB
Writeback:           0 kB
Mapped:          17352 kB
Slab:            82620 kB
Committed_AS:  2964352 kB
PageTables:       1472 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264960 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66420 MiB
End job on node31 at 2009-03-30 06:52:10