Trace number 1773597

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 0.463928 0.465343

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 benchmark0.417936
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 

0.39/0.46	c starting MXC with:
0.39/0.46	c cnf_path = HOME/instance-1773597-1241301628.cnf
0.39/0.46	c restart_strategy = auto
0.39/0.46	c sign_strategy = cached
0.39/0.46	c use_preprocessing = -1
0.39/0.46	c output_implicant = 1
0.39/0.46	c timeout_seconds = 0
0.39/0.46	c running SatELite... done
0.39/0.46	c 3520 vars eliminated
0.39/0.46	c received 19 units and 4988 clauses from SatELite
0.39/0.46	c 3538 assignments made, starting to guess now
0.39/0.46	c ===================================[MXC]=====================================
0.39/0.46	c | Conflicts |                Clause Statistics                   |   Vars   |
0.39/0.46	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
0.39/0.46	c =============================================================================
0.39/0.46	c |         0 |       0    2035     2953        0        0     nan |     4210 |
0.39/0.46	c |       100 |       0    2035     2953      100     1050    17.5 |      672 |
0.39/0.46	c |       210 |       0    2036     2953      209     1105    26.1 |      672 |
0.39/0.46	c |       441 |       0    2037     2953      439     1220    20.3 |      672 |
0.39/0.46	c |       805 |       0    2037     2953      803     1402    25.2 |      672 |
0.39/0.46	c |      1315 |       0    2037     2953     1313     1657    33.9 |      672 |
0.39/0.46	c |      1986 |       0    2037     2953     1984     1993    40.0 |      672 |
0.39/0.46	c |      2834 |       0    2037     2953     1839     2417    43.2 |      672 |
0.39/0.46	c |      3876 |       0    2037     2953     2881     2938    50.4 |      672 |
0.39/0.46	c |      5132 |       0    2033     2908     2629     3560    52.8 |      668 |
0.39/0.46	c |      6004 |       0    2039     2908     3492     3658    49.1 |      662 |
0.39/0.46	c ----- stats for thread 0 -----
0.39/0.46	c restarts: 43
0.39/0.46	c decisions: 22992
0.39/0.46	c propagations: 257282
0.39/0.46	c conflicts: 6004
0.39/0.46	c 0.463s elapsed
0.39/0.46	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-1773597-1241301628/watcher-1773597-1241301628 -o /tmp/evaluation-result-1773597-1241301628/solver-1773597-1241301628 -C 10000 -W 12000 -M 1800 HOME/mxc-sat09 -i HOME/instance-1773597-1241301628.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 10000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 10030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 12000 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
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.00 1.00 1.07 3/64 24671
/proc/meminfo: memFree=1916128/2055920 swapFree=4191900/4192956
[pid=24671] ppid=24669 vsize=2468 CPUtime=0
/proc/24671/stat : 24671 (mxc-sat09) R 24669 24671 24551 0 -1 4194304 392 0 0 0 0 0 0 0 18 0 1 0 158190834 2527232 378 1992294400 134512640 135192793 4294956224 18446744073709551615 134748791 0 0 4096 0 0 0 0 17 1 0 0
/proc/24671/statm: 617 378 54 166 0 448 0

[startup+0.087082 s]
/proc/loadavg: 1.00 1.00 1.07 3/64 24671
/proc/meminfo: memFree=1916128/2055920 swapFree=4191900/4192956
[pid=24671] ppid=24669 vsize=4784 CPUtime=0.08
/proc/24671/stat : 24671 (mxc-sat09) R 24669 24671 24551 0 -1 4194304 1002 0 0 0 8 0 0 0 18 0 1 0 158190834 4898816 946 1992294400 134512640 135192793 4294956224 18446744073709551615 134568068 0 0 4096 0 0 0 0 17 1 0 0
/proc/24671/statm: 1196 946 56 166 0 1027 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4784

[startup+0.101082 s]
/proc/loadavg: 1.00 1.00 1.07 3/64 24671
/proc/meminfo: memFree=1916128/2055920 swapFree=4191900/4192956
[pid=24671] ppid=24669 vsize=4784 CPUtime=0.09
/proc/24671/stat : 24671 (mxc-sat09) R 24669 24671 24551 0 -1 4194304 1013 0 0 0 9 0 0 0 18 0 1 0 158190834 4898816 957 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/24671/statm: 1196 957 56 166 0 1027 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4784

[startup+0.3011 s]
/proc/loadavg: 1.00 1.00 1.07 3/64 24671
/proc/meminfo: memFree=1916128/2055920 swapFree=4191900/4192956
[pid=24671] ppid=24669 vsize=5148 CPUtime=0.29
/proc/24671/stat : 24671 (mxc-sat09) R 24669 24671 24551 0 -1 4194304 1119 0 0 0 29 0 0 0 19 0 1 0 158190834 5271552 1063 1992294400 134512640 135192793 4294956224 18446744073709551615 134550885 0 0 4096 0 0 0 0 17 1 0 0
/proc/24671/statm: 1287 1063 73 166 0 1118 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5148

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

[startup+0.401108 s]
/proc/loadavg: 1.00 1.00 1.07 3/64 24671
/proc/meminfo: memFree=1916128/2055920 swapFree=4191900/4192956
[pid=24671] ppid=24669 vsize=5544 CPUtime=0.39
/proc/24671/stat : 24671 (mxc-sat09) R 24669 24671 24551 0 -1 4194304 1231 0 0 0 39 0 0 0 20 0 1 0 158190834 5677056 1175 1992294400 134512640 135192793 4294956224 18446744073709551615 134551561 0 0 4096 0 0 0 0 17 1 0 0
/proc/24671/statm: 1386 1175 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): 0.465343
CPU time (s): 0.463928
CPU user time (s): 0.45693
CPU system time (s): 0.006998
CPU usage (%): 99.6959
Max. virtual memory (cumulated for all children) (KiB): 5544

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.45693
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 0.004999 second user time and 0.005999 second system time

The end

Launcher Data 

Begin job on node43 at 2009-05-03 00:00:28
IDJOB=1773597
IDBENCH=70757
IDSOLVER=613
FILE ID=node43/1773597-1241301628
PBS_JOBID= 9225186
Free space on /tmp= 66348 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-1773597-1241301628/watcher-1773597-1241301628 -o /tmp/evaluation-result-1773597-1241301628/solver-1773597-1241301628 -C 10000 -W 12000 -M 1800  HOME/mxc-sat09 -i HOME/instance-1773597-1241301628.cnf

TIME LIMIT= 10000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 93c9f18c75548b864ec69c2789cae658
RANDOM SEED=646057452

node43.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		: 3000.237
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		: 3000.237
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:       1916544 kB
Buffers:         15484 kB
Cached:          54704 kB
SwapCached:        260 kB
Active:          17552 kB
Inactive:        65888 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1916544 kB
SwapTotal:     4192956 kB
SwapFree:      4191900 kB
Dirty:            1032 kB
Writeback:           0 kB
Mapped:          21824 kB
Slab:            41824 kB
Committed_AS:   732104 kB
PageTables:       1444 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= 66348 MiB
End job on node43 at 2009-05-03 00:00:28