Trace number 338818

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
Rsat 2007-02-08? (exit code) 0.027995 0.0326231

General information on the benchmark

Namecrafted/Difficult/contest05/others/
pmg-13-UNSAT.sat05-3941.reshuffled-07.cnf
MD5SUM9ce7a6a007310fa075cda4060c50d29c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables409
Number of clauses1362
Sum of the clauses size4084
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22
Number of clauses of size 31360
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c Parsing...
0.00/0.00	c ==============================================================================
0.00/0.00	c |           |     ORIGINAL     |              LEARNT              |          |
0.00/0.00	c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
0.00/0.00	c ==============================================================================
0.00/0.00	c |         0 |    1362     4084 |     408       0        0     nan |  0.000 % |
0.00/0.00	c |         0 |    1360     4079 |      --       0       --      -- |     --   | -2/-5
0.00/0.00	c ==============================================================================
0.00/0.00	c Result  :   #vars: 408   #clauses: 1360   #literals: 4079
0.00/0.00	c CPU time:   0.003999 s
0.00/0.00	c ==============================================================================
0.00/0.01	c Rsat version 2.00
0.00/0.02	*** glibc detected *** free(): invalid next size (fast): 0x0813f5c0 ***
0.00/0.03	/tmp/evaluation/338818-1173692908/rsat.sh: line 39:   915 Aborted                 (core dumped) $RS $TMP.cnf -r $TMP.result

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer:

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node76/watcher-338818-1173692908 -o ROOT/results/node76/solver-338818-1173692908 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/338818-1173692908/rsat.sh /tmp/evaluation/338818-1173692908/instance-338818-1173692908.cnf 

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): 2400 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 0.97 0.98 3/69 912
/proc/meminfo: memFree=1646404/2055888 swapFree=3938024/4096564
[pid=912] ppid=910 vsize=5360 CPUtime=0
/proc/912/stat : 912 (rsat.sh) S 910 912 32193 0 -1 4194304 281 0 0 0 0 0 0 0 20 0 1 0 389249146 5488640 230 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 206843734596 0 65536 4100 65538 18446744071563358023 0 0 17 1 0 0
/proc/912/statm: 1340 230 193 169 0 50 0
[pid=913] ppid=912 vsize=0 CPUtime=0
/proc/913/stat : 913 (SatElite) D 912 912 32193 0 -1 4194308 144 0 0 0 0 0 0 0 18 0 1 0 389249146 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 3 18446744072100303002 0 0 17 0 0 0
/proc/913/statm: 0 0 0 0 0 0 0

[startup+0.027474 s]
/proc/loadavg: 0.92 0.97 0.98 3/69 912
/proc/meminfo: memFree=1646404/2055888 swapFree=3938024/4096564
[pid=912] ppid=910 vsize=5360 CPUtime=0
/proc/912/stat : 912 (rsat.sh) S 910 912 32193 0 -1 4194304 303 144 0 0 0 0 0 0 20 0 1 0 389249146 5488640 232 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 206843734596 0 65536 4100 65538 18446744071563358023 0 0 17 0 0 0
/proc/912/statm: 1340 232 193 169 0 50 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 5360

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

[startup+0.027474 s]
/proc/loadavg: 0.92 0.97 0.98 3/69 912
/proc/meminfo: memFree=1646404/2055888 swapFree=3938024/4096564
[pid=912] ppid=910 vsize=5360 CPUtime=0
/proc/912/stat : 912 (rsat.sh) S 910 912 32193 0 -1 4194304 303 144 0 0 0 0 0 0 20 0 1 0 389249146 5488640 232 18446744073709551615 4194304 4889804 548682069328 18446744073709551615 206843734596 0 65536 4100 65538 18446744071563358023 0 0 17 0 0 0
/proc/912/statm: 1340 232 193 169 0 50 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 5360

Child status: 134
Real time (s): 0.0326231
CPU time (s): 0.027995
CPU user time (s): 0.022996
CPU system time (s): 0.004999
CPU usage (%): 85.8135
Max. virtual memory (cumulated for all children) (KiB): 5360

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.022996
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= 807
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= 41
involuntary context switches= 4

runsolver used 0.001999 second user time and 0.005999 second system time

The end

Launcher Data (download as text)

Begin job on node76 on Mon Mar 12 09:48:28 UTC 2007

IDJOB= 338818
IDBENCH= 24732
IDSOLVER= 104
FILE ID= node76/338818-1173692908

PBS_JOBID= 4101726

Free space on /tmp= 66539 MiB

SOLVER NAME= Rsat 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/crafted/Difficult/contest05/others/pmg-13-UNSAT.sat05-3941.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/338818-1173692908/rsat.sh /tmp/evaluation/338818-1173692908/instance-338818-1173692908.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node76/watcher-338818-1173692908 -o ROOT/results/node76/solver-338818-1173692908 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/338818-1173692908/rsat.sh /tmp/evaluation/338818-1173692908/instance-338818-1173692908.cnf            

META MD5SUM SOLVER= 42fb71d21991acbdd759c16645f65450
MD5SUM BENCH=  9ce7a6a007310fa075cda4060c50d29c

RANDOM SEED= 716468090

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node76.alineos.net 2.6.9-34.ELsmp #1 SMP Thu Mar 9 06:23:23 GMT 2006 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		: 3000.219
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	: 6006.18
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		: 3000.219
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	: 5999.41
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055888 kB
MemFree:       1646748 kB
Buffers:         29040 kB
Cached:         184760 kB
SwapCached:     152448 kB
Active:         110564 kB
Inactive:       261692 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055888 kB
LowFree:       1646748 kB
SwapTotal:     4096564 kB
SwapFree:      3938024 kB
Dirty:            1704 kB
Writeback:           0 kB
Mapped:          15476 kB
Slab:            23264 kB
Committed_AS:  1219960 kB
PageTables:       1424 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264388 kB
VmallocChunk: 536606243 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66538 MiB

End job on node76 on Mon Mar 12 09:48:29 UTC 2007