Trace number 1719533

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 3.23851 3.24002

General information on the benchmark

Namecmu-bmc-barrel6.cnf
MD5SUMcc87f90bf08e13838e59f0f2639db121
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.108983
Satisfiable
(Un)Satisfiability was proved
Number of variables2306
Number of clauses8931
Sum of the clauses size24664
Maximum clause length217
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22629
Number of clauses of size 36048
Number of clauses of size 4252
Number of clauses of size 50
Number of clauses of size over 52

Solver Data 

3.19/3.23	c starting MXC with:
3.19/3.23	c cnf_path = HOME/instance-1719533-1240647457.cnf
3.19/3.23	c restart_strategy = auto
3.19/3.23	c sign_strategy = cached
3.19/3.23	c use_preprocessing = -1
3.19/3.23	c output_implicant = 1
3.19/3.23	c timeout_seconds = 0
3.19/3.23	c running SatELite... done
3.19/3.23	c 1709 vars eliminated
3.19/3.23	c received 0 units and 4452 clauses from SatELite
3.19/3.23	c 1708 assignments made, starting to guess now
3.19/3.23	c ===================================[MXC]=====================================
3.19/3.23	c | Conflicts |                Clause Statistics                   |   Vars   |
3.19/3.23	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
3.19/3.23	c =============================================================================
3.19/3.23	c |         0 |       0     486     3966        0        0     nan |     2306 |
3.19/3.23	c |       100 |       0     486     3966      100     1050    82.0 |      598 |
3.19/3.23	c |       210 |       0     486     3966      210     1105    86.2 |      598 |
3.19/3.23	c |       441 |       0     488     3966      439     1220    64.9 |      598 |
3.19/3.23	c |       805 |       0     484     3962      791     1402    64.0 |      594 |
3.19/3.23	c |      1315 |       0     488     3948     1275     1657    63.1 |      593 |
3.19/3.23	c |      1986 |       0     487     3930      973     1903    49.6 |      590 |
3.19/3.23	c |      2834 |       0     488     3922     1809     2056    59.7 |      587 |
3.19/3.23	c |      3876 |       0     495     3922     1799     2204    63.6 |      586 |
3.19/3.23	c |      5132 |       0     509     3922     1907     2367    73.2 |      584 |
3.19/3.23	c |      6623 |       0     531     3922     2167     2548    78.9 |      584 |
3.19/3.23	c |      8373 |       0     549     3904     2602     2730    74.0 |      584 |
3.19/3.23	c |     10408 |       0     567     3904     1828     2889    52.8 |      581 |
3.19/3.23	c |     12756 |       0     577     3802     2637     3079    52.0 |      576 |
3.19/3.23	c |     15449 |       0     606     3732     2174     3207    41.9 |      571 |
3.19/3.23	c |     18521 |       0     637     3648     1883     3381    52.2 |      565 |
3.19/3.23	c |     22010 |       0     659     3634     1916     3495    35.6 |      564 |
3.19/3.23	c |     25958 |       0     683     3620     2252     3670    39.9 |      563 |
3.19/3.23	c |     30411 |       0     715     3620     2910     3864    38.3 |      563 |
3.19/3.23	c |     35419 |       0     756     3578     3898     4101    46.9 |      560 |
3.19/3.23	c |     39603 |       0     825     3578     3883     4317    31.2 |      279 |
3.19/3.23	c ----- stats for thread 0 -----
3.19/3.23	c restarts: 31
3.19/3.23	c decisions: 150355
3.19/3.23	c propagations: 3502460
3.19/3.23	c conflicts: 39603
3.19/3.23	c 3.238s elapsed
3.19/3.23	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-1719533-1240647457/watcher-1719533-1240647457 -o /tmp/evaluation-result-1719533-1240647457/solver-1719533-1240647457 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/mxc-sat09 -i HOME/instance-1719533-1240647457.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: 1.63 1.77 1.44 3/64 17659
/proc/meminfo: memFree=1750976/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=1748 CPUtime=0
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 272 0 0 0 0 0 0 0 18 0 1 0 92779056 1789952 258 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 437 259 54 166 0 268 0

[startup+0.066793 s]
/proc/loadavg: 1.63 1.77 1.44 3/64 17659
/proc/meminfo: memFree=1750976/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=3020 CPUtime=0.06
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 632 0 0 0 6 0 0 0 18 0 1 0 92779056 3092480 583 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 755 583 56 166 0 586 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 3020

[startup+0.101783 s]
/proc/loadavg: 1.63 1.77 1.44 3/64 17659
/proc/meminfo: memFree=1750976/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=3152 CPUtime=0.09
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 673 0 0 0 9 0 0 0 18 0 1 0 92779056 3227648 624 1992294400 134512640 135192793 4294956224 18446744073709551615 134573778 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 788 624 56 166 0 619 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3152

[startup+0.301726 s]
/proc/loadavg: 1.63 1.77 1.44 3/64 17659
/proc/meminfo: memFree=1750976/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=3496 CPUtime=0.29
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 768 0 0 0 29 0 0 0 19 0 1 0 92779056 3579904 719 1992294400 134512640 135192793 4294956224 18446744073709551615 134534329 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 874 719 72 166 0 705 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3496

[startup+0.701612 s]
/proc/loadavg: 1.63 1.77 1.44 3/64 17659
/proc/meminfo: memFree=1750976/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=4156 CPUtime=0.69
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 949 0 0 0 69 0 0 0 22 0 1 0 92779056 4255744 900 1992294400 134512640 135192793 4294956224 18446744073709551615 134533892 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 1039 900 73 166 0 870 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 4156

[startup+1.50139 s]
/proc/loadavg: 1.63 1.77 1.44 2/65 17660
/proc/meminfo: memFree=1747384/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=4420 CPUtime=1.49
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 1015 0 0 0 149 0 0 0 25 0 1 0 92779056 4526080 966 1992294400 134512640 135192793 4294956224 18446744073709551615 134552204 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 1105 966 73 166 0 936 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4420

[startup+3.10193 s]
/proc/loadavg: 1.63 1.77 1.44 2/65 17660
/proc/meminfo: memFree=1747064/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=4816 CPUtime=3.09
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 1109 0 0 0 309 0 0 0 25 0 1 0 92779056 4931584 1060 1992294400 134512640 135192793 4294956224 18446744073709551615 134532642 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 1204 1060 73 166 0 1035 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 4816

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

[startup+3.2019 s]
/proc/loadavg: 1.63 1.77 1.44 2/65 17660
/proc/meminfo: memFree=1746808/2055920 swapFree=4181364/4192956
[pid=17659] ppid=17657 vsize=4956 CPUtime=3.19
/proc/17659/stat : 17659 (mxc-sat09) R 17657 17659 17555 0 -1 4194304 1114 0 0 0 319 0 0 0 25 0 1 0 92779056 5074944 1065 1992294400 134512640 135192793 4294956224 18446744073709551615 134551023 0 0 4096 0 0 0 0 17 1 0 0
/proc/17659/statm: 1239 1065 73 166 0 1070 0
Current children cumulated CPU time (s) 3.19
Current children cumulated vsize (KiB) 4956

Child status: 20
Real time (s): 3.24002
CPU time (s): 3.23851
CPU user time (s): 3.23351
CPU system time (s): 0.004999
CPU usage (%): 99.9532
Max. virtual memory (cumulated for all children) (KiB): 4956

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.23351
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= 1117
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= 8

runsolver used 0.006998 second user time and 0.012998 second system time

The end

Launcher Data 

Begin job on node16 at 2009-04-25 10:17:37
IDJOB=1719533
IDBENCH=69564
IDSOLVER=504
FILE ID=node16/1719533-1240647457
PBS_JOBID= 9186479
Free space on /tmp= 66320 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT_RACE08/cnf/cmu-bmc-barrel6.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1719533-1240647457/watcher-1719533-1240647457 -o /tmp/evaluation-result-1719533-1240647457/solver-1719533-1240647457 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/mxc-sat09 -i HOME/instance-1719533-1240647457.cnf

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

MD5SUM BENCH= cc87f90bf08e13838e59f0f2639db121
RANDOM SEED=1008182594

node16.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		: 3000.234
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		: 3000.234
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:       1751392 kB
Buffers:         33208 kB
Cached:         218260 kB
SwapCached:       6388 kB
Active:          29408 kB
Inactive:       230932 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1751392 kB
SwapTotal:     4192956 kB
SwapFree:      4181364 kB
Dirty:            1196 kB
Writeback:           0 kB
Mapped:          13572 kB
Slab:            30200 kB
Committed_AS:   316560 kB
PageTables:       1436 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= 66320 MiB
End job on node16 at 2009-04-25 10:17:40