Trace number 427023

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
MXC 2007-02-08SAT 1.3108 1.32599

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1665384822-14-SAT.cnf
MD5SUMbe7dc6f6bf5d0d6359adfd321a4b6af2
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.033993
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)

1.29/1.32	c MXC attempting /tmp/evaluation/427023-1177831506/instance-427023-1177831506.cnf
1.29/1.32	c 0 assignments made, starting to guess now
1.29/1.32	c ===================================[MXC]=====================================
1.29/1.32	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
1.29/1.32	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
1.29/1.32	c =============================================================================
1.29/1.32	c |         0 |    3221     9663 |    1073       0       0     nan |  0.000 % |
1.29/1.32	c |       102 |    3221     9663 |    1180      99    2378    24.0 |  0.000 % |
1.29/1.32	c |       252 |    3221     9663 |    1298     249    5968    24.0 |  0.000 % |
1.29/1.32	c |       477 |    3209     9627 |    1428     473   10603    22.4 |  0.077 % |
1.29/1.32	c |       814 |    3209     9627 |    1570     809   18324    22.7 |  0.077 % |
1.29/1.32	c |      1323 |    3209     9627 |    1728    1317   30139    22.9 |  0.077 % |
1.29/1.32	c |      2083 |    3209     9627 |    1900    1211   27031    22.3 |  0.077 % |
1.29/1.32	c |      3222 |    3209     9627 |    2090    1397   29912    21.4 |  0.077 % |
1.29/1.32	c |      4932 |    3209     9627 |    2300    2060   48820    23.7 |  0.077 % |
1.29/1.32	c |      7495 |    3209     9627 |    2530    1174   26808    22.8 |  0.077 % |
1.29/1.32	c |     11339 |    3209     9627 |    2783    2488   58232    23.4 |  0.077 % |
1.29/1.32	c 1.310s elapsed
1.29/1.32	c restarts: 10
1.29/1.32	c decisions: 20103
1.29/1.32	c propagations: 2672641
1.29/1.32	c conflicts: 15701
1.29/1.32	s SATISFIABLE
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-660 -487 -657 -49 -172 -1060 -821 -273 -840 -9 -452 -34 -1207 -751 -824 -476 -1038 -755 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/node55/watcher-427023-1177831506 -o ROOT/results/node55/solver-427023-1177831506 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/427023-1177831506/mxc /tmp/evaluation/427023-1177831506/instance-427023-1177831506.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: 0.89 1.32 1.60 3/64 8525
/proc/meminfo: memFree=1384012/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1200 CPUtime=0
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 169 0 0 0 0 0 0 0 18 0 1 0 231060617 1228800 154 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134548435 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 300 154 57 122 0 174 0

[startup+0.0261569 s]
/proc/loadavg: 0.89 1.32 1.60 3/64 8525
/proc/meminfo: memFree=1384012/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1200 CPUtime=0.02
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 172 0 0 0 2 0 0 0 18 0 1 0 231060617 1228800 157 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134530237 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 300 157 59 122 0 174 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 1200

[startup+0.101163 s]
/proc/loadavg: 0.89 1.32 1.60 3/64 8525
/proc/meminfo: memFree=1384012/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1332 CPUtime=0.09
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 209 0 0 0 9 0 0 0 18 0 1 0 231060617 1363968 194 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519927 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 333 194 59 122 0 207 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1332

[startup+0.301182 s]
/proc/loadavg: 0.89 1.32 1.60 3/64 8525
/proc/meminfo: memFree=1384012/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1472 CPUtime=0.29
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 253 0 0 0 29 0 0 0 19 0 1 0 231060617 1507328 236 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519619 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 368 236 67 122 0 242 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1472

[startup+0.70122 s]
/proc/loadavg: 0.89 1.32 1.60 3/64 8525
/proc/meminfo: memFree=1384012/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1604 CPUtime=0.69
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 283 0 0 0 69 0 0 0 22 0 1 0 231060617 1642496 266 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519287 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 401 266 67 122 0 275 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1604

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

[startup+1.10526 s]
/proc/loadavg: 0.89 1.32 1.60 2/65 8526
/proc/meminfo: memFree=1383108/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1736 CPUtime=1.1
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 301 0 0 0 110 0 0 0 25 0 1 0 231060617 1777664 284 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134531578 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 434 284 67 122 0 308 0
Current children cumulated CPU time (s) 1.1
Current children cumulated vsize (KiB) 1736

[startup+1.30128 s]
/proc/loadavg: 0.89 1.32 1.60 2/65 8526
/proc/meminfo: memFree=1383108/2055920 swapFree=4184544/4192956
[pid=8525] ppid=8523 vsize=1736 CPUtime=1.29
/proc/8525/stat : 8525 (mxc) R 8523 8525 7421 0 -1 4194304 307 0 0 0 129 0 0 0 25 0 1 0 231060617 1777664 290 18446744073709551615 134512640 135013041 4294956672 18446744073709551615 134519800 0 0 4096 0 0 0 0 17 1 0 0
/proc/8525/statm: 434 290 67 122 0 308 0
Current children cumulated CPU time (s) 1.29
Current children cumulated vsize (KiB) 1736

Child status: 10
Real time (s): 1.32599
CPU time (s): 1.3108
CPU user time (s): 1.3098
CPU system time (s): 0.000999
CPU usage (%): 98.8543
Max. virtual memory (cumulated for all children) (KiB): 1736

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.3098
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 310
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= 9
involuntary context switches= 4

runsolver used 0.005999 second user time and 0.004999 second system time

The end

Launcher Data (download as text)

Begin job on node55 on Sun Apr 29 07:25:06 UTC 2007

IDJOB= 427023
IDBENCH= 20296
IDSOLVER= 174
FILE ID= node55/427023-1177831506

PBS_JOBID= 4718276

Free space on /tmp= 66564 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1665384822-14-SAT.cnf
COMMAND LINE= /tmp/evaluation/427023-1177831506/mxc /tmp/evaluation/427023-1177831506/instance-427023-1177831506.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node55/watcher-427023-1177831506 -o ROOT/results/node55/solver-427023-1177831506 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/427023-1177831506/mxc /tmp/evaluation/427023-1177831506/instance-427023-1177831506.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  be7dc6f6bf5d0d6359adfd321a4b6af2

RANDOM SEED= 181841870

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node55.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		: 3000.216
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		: 3000.216
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:       1384420 kB
Buffers:         59596 kB
Cached:         525300 kB
SwapCached:       2556 kB
Active:         315812 kB
Inactive:       279240 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1384420 kB
SwapTotal:     4192956 kB
SwapFree:      4184544 kB
Dirty:             716 kB
Writeback:           0 kB
Mapped:          16576 kB
Slab:            62520 kB
Committed_AS:  1389104 kB
PageTables:       1380 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= 66564 MiB

End job on node55 on Sun Apr 29 07:25:07 UTC 2007