Trace number 1553203

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 0.441931 0.443422

General information on the benchmark

NameAPPLICATIONS/bitverif/
minor/minor032.cnf
MD5SUM93c9f18c75548b864ec69c2789cae658
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.418935
Satisfiable
(Un)Satisfiability was proved
Number of variables4210
Number of clauses12053
Sum of the clauses size28121
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 28034
Number of clauses of size 34017
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.39/0.44	c starting MXC with:
0.39/0.44	c cnf_path = HOME/instance-1553203-1238712345.cnf
0.39/0.44	c restart_strategy = auto
0.39/0.44	c sign_strategy = cached
0.39/0.44	c use_preprocessing = -1
0.39/0.44	c output_implicant = 1
0.39/0.44	c timeout_seconds = 0
0.39/0.44	c running SatELite... done
0.39/0.44	c 3520 vars eliminated
0.39/0.44	c received 19 units and 4988 clauses from SatELite
0.39/0.44	c 3538 assignments made, starting to guess now
0.39/0.44	c ===================================[MXC]=====================================
0.39/0.44	c | Conflicts |                Clause Statistics                   |   Vars   |
0.39/0.44	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
0.39/0.44	c =============================================================================
0.39/0.44	c |         0 |       0    2035     2953        0        0     nan |     4210 |
0.39/0.44	c |       100 |       0    2035     2953      100     1050    17.5 |      672 |
0.39/0.44	c |       210 |       0    2036     2953      209     1105    26.1 |      672 |
0.39/0.44	c |       441 |       0    2037     2953      439     1220    20.3 |      672 |
0.39/0.44	c |       805 |       0    2037     2953      803     1402    25.2 |      672 |
0.39/0.44	c |      1315 |       0    2037     2953     1313     1657    33.9 |      672 |
0.39/0.44	c |      1986 |       0    2037     2953     1984     1993    40.0 |      672 |
0.39/0.44	c |      2834 |       0    2037     2953     1839     2417    43.2 |      672 |
0.39/0.44	c |      3876 |       0    2037     2953     2881     2938    50.4 |      672 |
0.39/0.44	c |      5132 |       0    2033     2908     2629     3560    52.8 |      668 |
0.39/0.44	c |      6004 |       0    2039     2908     3492     3658    49.1 |      662 |
0.39/0.44	c ----- stats for thread 0 -----
0.39/0.44	c restarts: 43
0.39/0.44	c decisions: 22992
0.39/0.44	c propagations: 257282
0.39/0.44	c conflicts: 6004
0.39/0.44	c 0.441s elapsed
0.39/0.44	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-1553203-1238712345/watcher-1553203-1238712345 -o /tmp/evaluation-result-1553203-1238712345/solver-1553203-1238712345 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1553203-1238712345.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: 1.78 1.76 1.60 3/81 5767
/proc/meminfo: memFree=1364464/2055920 swapFree=4169692/4192956
[pid=5767] ppid=5765 vsize=2468 CPUtime=0
/proc/5767/stat : 5767 (mxc-sat09) R 5765 5767 5644 0 -1 4194304 392 0 0 0 0 0 0 0 20 0 1 0 497563390 2527232 378 1992294400 134512640 135192793 4294956208 18446744073709551615 134749012 0 0 4096 0 0 0 0 17 1 0 0
/proc/5767/statm: 617 378 54 166 0 448 0

[startup+0.0196589 s]
/proc/loadavg: 1.78 1.76 1.60 3/81 5767
/proc/meminfo: memFree=1364464/2055920 swapFree=4169692/4192956
[pid=5767] ppid=5765 vsize=3016 CPUtime=0.01
/proc/5767/stat : 5767 (mxc-sat09) R 5765 5767 5644 0 -1 4194304 572 0 0 0 1 0 0 0 20 0 1 0 497563390 3088384 516 1992294400 134512640 135192793 4294956208 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/5767/statm: 754 516 56 166 0 585 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 3016

[startup+0.102668 s]
/proc/loadavg: 1.78 1.76 1.60 3/81 5767
/proc/meminfo: memFree=1364464/2055920 swapFree=4169692/4192956
[pid=5767] ppid=5765 vsize=4784 CPUtime=0.09
/proc/5767/stat : 5767 (mxc-sat09) R 5765 5767 5644 0 -1 4194304 1013 0 0 0 9 0 0 0 20 0 1 0 497563390 4898816 957 1992294400 134512640 135192793 4294956208 18446744073709551615 134573444 0 0 4096 0 0 0 0 17 1 0 0
/proc/5767/statm: 1196 957 56 166 0 1027 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4784

[startup+0.302686 s]
/proc/loadavg: 1.78 1.76 1.60 3/81 5767
/proc/meminfo: memFree=1364464/2055920 swapFree=4169692/4192956
[pid=5767] ppid=5765 vsize=5280 CPUtime=0.29
/proc/5767/stat : 5767 (mxc-sat09) R 5765 5767 5644 0 -1 4194304 1142 0 0 0 29 0 0 0 22 0 1 0 497563390 5406720 1086 1992294400 134512640 135192793 4294956208 18446744073709551615 134534131 0 0 4096 0 0 0 0 17 1 0 0
/proc/5767/statm: 1320 1086 73 166 0 1151 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5280

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

[startup+0.4027 s]
/proc/loadavg: 1.78 1.76 1.60 3/81 5767
/proc/meminfo: memFree=1364464/2055920 swapFree=4169692/4192956
[pid=5767] ppid=5765 vsize=5544 CPUtime=0.39
/proc/5767/stat : 5767 (mxc-sat09) R 5765 5767 5644 0 -1 4194304 1233 0 0 0 39 0 0 0 23 0 1 0 497563390 5677056 1177 1992294400 134512640 135192793 4294956208 18446744073709551615 134553617 0 0 4096 0 0 0 0 17 1 0 0
/proc/5767/statm: 1386 1177 73 166 0 1217 0
Current children cumulated CPU time (s) 0.39
Current children cumulated vsize (KiB) 5544

Child status: 20
Real time (s): 0.443422
CPU time (s): 0.441931
CPU user time (s): 0.434933
CPU system time (s): 0.006998
CPU usage (%): 99.6638
Max. virtual memory (cumulated for all children) (KiB): 5544

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.434933
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1283
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= 2

runsolver used 0.003999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node89 at 2009-04-03 00:45:45
IDJOB=1553203
IDBENCH=70757
IDSOLVER=504
FILE ID=node89/1553203-1238712345
PBS_JOBID= 9085322
Free space on /tmp= 66364 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT09/APPLICATIONS/bitverif/minor/minor032.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1553203-1238712345/watcher-1553203-1238712345 -o /tmp/evaluation-result-1553203-1238712345/solver-1553203-1238712345 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1553203-1238712345.cnf

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

MD5SUM BENCH= 93c9f18c75548b864ec69c2789cae658
RANDOM SEED=1831805102

node89.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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1364944 kB
Buffers:         94292 kB
Cached:         497408 kB
SwapCached:      12480 kB
Active:         245692 kB
Inactive:       360516 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1364944 kB
SwapTotal:     4192956 kB
SwapFree:      4169692 kB
Dirty:             984 kB
Writeback:           0 kB
Mapped:          19564 kB
Slab:            69004 kB
Committed_AS:  1617248 kB
PageTables:       2600 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= 66364 MiB
End job on node89 at 2009-04-03 00:45:46