Trace number 1730327

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
MXC 2009-03-10UNSAT 1.92371 1.92357

General information on the benchmark

Namecrafted/Difficult/contest05/sabharwal/
grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
MD5SUM4c3b2816cb16b0fd4134bf2c85ce45d0
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.61375
Satisfiable
(Un)Satisfiability was proved
Number of variables90300
Number of clauses179702
Sum of the clauses size718202
Maximum clause length4
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 2300
Number of clauses of size 30
Number of clauses of size 4179400
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

1.89/1.91	c starting MXC with:
1.89/1.91	c cnf_path = HOME/instance-1730327-1240758365.cnf
1.89/1.91	c restart_strategy = auto
1.89/1.91	c sign_strategy = cached
1.89/1.91	c use_preprocessing = -1
1.89/1.91	c output_implicant = 1
1.89/1.91	c timeout_seconds = 0
1.89/1.91	c running SatELite... c ===================================[MXC]=====================================
1.89/1.91	c | Conflicts |                Clause Statistics                   |   Vars   |
1.89/1.91	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.89/1.91	c =============================================================================
1.89/1.91	c |         0 |       0       0        0        0        0     nan |    90300 |
1.89/1.91	c ----- stats for thread 0 -----
1.89/1.91	c restarts: 0
1.89/1.91	c decisions: 0
1.89/1.91	c propagations: 0
1.89/1.91	c conflicts: 0
1.89/1.91	c 1.908s elapsed
1.89/1.91	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1730327-1240758365/watcher-1730327-1240758365 -o /tmp/evaluation-result-1730327-1240758365/solver-1730327-1240758365 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1730327-1240758365.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): 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 0.97 0.99 3/64 5975
/proc/meminfo: memFree=1824448/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=5668 CPUtime=0
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 745 0 0 0 0 0 0 0 18 0 1 0 103862638 5804032 732 1992294400 134512640 135192793 4294956208 18446744073709551615 134779278 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 1417 737 46 166 0 1248 0

[startup+0.0222959 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 5975
/proc/meminfo: memFree=1824448/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=18784 CPUtime=0.01
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 3317 0 0 0 0 1 0 0 18 0 1 0 103862638 19234816 3303 1992294400 134512640 135192793 4294956208 18446744073709551615 134528472 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 4696 3308 50 166 0 4527 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 18784

[startup+0.101302 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 5975
/proc/meminfo: memFree=1824448/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=28440 CPUtime=0.09
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 5614 0 0 0 7 2 0 0 18 0 1 0 103862638 29122560 5599 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 7110 5599 55 166 0 6941 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 28440

[startup+0.301322 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 5975
/proc/meminfo: memFree=1824448/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=32372 CPUtime=0.29
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 6558 0 0 0 27 2 0 0 19 0 1 0 103862638 33148928 6542 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 8093 6542 55 166 0 7924 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 32372

[startup+0.701361 s]
/proc/loadavg: 0.99 0.97 0.99 3/64 5975
/proc/meminfo: memFree=1824448/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=38944 CPUtime=0.69
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 8132 0 0 0 66 3 0 0 23 0 1 0 103862638 39878656 8116 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 9736 8116 55 166 0 9567 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 38944

[startup+1.50144 s]
/proc/loadavg: 0.99 0.97 0.99 2/65 5976
/proc/meminfo: memFree=1794936/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=43852 CPUtime=1.49
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 10479 0 0 0 145 4 0 0 25 0 1 0 103862638 44904448 9257 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 10963 9257 56 166 0 10794 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 43852

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

[startup+1.90148 s]
/proc/loadavg: 0.99 0.97 0.99 2/65 5976
/proc/meminfo: memFree=1794936/2055920 swapFree=4182052/4192956
[pid=5975] ppid=5973 vsize=49872 CPUtime=1.89
/proc/5975/stat : 5975 (mxc-sat09) R 5973 5975 5558 0 -1 4194304 12033 0 0 0 184 5 0 0 25 0 1 0 103862638 51068928 10811 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5975/statm: 12468 10812 56 166 0 12299 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 49872

Child status: 20
Real time (s): 1.92357
CPU time (s): 1.92371
CPU user time (s): 1.86272
CPU system time (s): 0.06099
CPU usage (%): 100.007
Max. virtual memory (cumulated for all children) (KiB): 49872

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.86272
system time used= 0.06099
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 12107
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 0.001999 second user time and 0.009998 second system time

The end

Launcher Data 

Begin job on node70 at 2009-04-26 17:06:06
IDJOB=1730327
IDBENCH=24728
IDSOLVER=504
FILE ID=node70/1730327-1240758365
PBS_JOBID= 9187089
Free space on /tmp= 66332 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT07/crafted/Difficult/contest05/sabharwal/grid-pebbling-unsat-grid-pbl-0300.sat05-1350.sat05-1350.reshuffled-07.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1730327-1240758365/watcher-1730327-1240758365 -o /tmp/evaluation-result-1730327-1240758365/solver-1730327-1240758365 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1730327-1240758365.cnf

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

MD5SUM BENCH= 4c3b2816cb16b0fd4134bf2c85ce45d0
RANDOM SEED=1212540409

node70.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		: 3000.213
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		: 3000.213
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:       1824864 kB
Buffers:         25328 kB
Cached:         140264 kB
SwapCached:       5020 kB
Active:          31592 kB
Inactive:       142184 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1824864 kB
SwapTotal:     4192956 kB
SwapFree:      4182052 kB
Dirty:            5512 kB
Writeback:           0 kB
Mapped:          14460 kB
Slab:            43392 kB
Committed_AS:   359368 kB
PageTables:       1372 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= 66332 MiB
End job on node70 at 2009-04-26 17:06:08