Trace number 1773817

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 3.97939 3.98087

General information on the benchmark

NameAPPLICATIONS/
bitverif/maxand/maxand064.cnf
MD5SUMb2d2617ddc348aef0d35df3c8f228dcb
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.97355
Satisfiable
(Un)Satisfiability was proved
Number of variables14578
Number of clauses42581
Sum of the clauses size99353
Maximum clause length3
Minimum clause length1
Number of clauses of size 12
Number of clauses of size 228386
Number of clauses of size 314193
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

3.89/3.97	c starting MXC with:
3.89/3.97	c cnf_path = HOME/instance-1773817-1241303105.cnf
3.89/3.97	c restart_strategy = auto
3.89/3.97	c sign_strategy = cached
3.89/3.97	c use_preprocessing = -1
3.89/3.97	c output_implicant = 1
3.89/3.97	c timeout_seconds = 0
3.89/3.97	c running SatELite... done
3.89/3.97	c 13102 vars eliminated
3.89/3.97	c received 18 units and 16657 clauses from SatELite
3.89/3.97	c 13119 assignments made, starting to guess now
3.89/3.97	c ===================================[MXC]=====================================
3.89/3.97	c | Conflicts |                Clause Statistics                   |   Vars   |
3.89/3.97	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
3.89/3.97	c =============================================================================
3.89/3.97	c |         0 |       0    6390    10267        0        0     nan |    14578 |
3.89/3.97	c |       100 |       0    6390    10267      100     1050    10.8 |     1459 |
3.89/3.97	c |       210 |       0    6390    10267      210     1105    12.0 |     1459 |
3.89/3.97	c |       441 |       0    6391    10267      440     1220    14.5 |     1459 |
3.89/3.97	c |       805 |       0    6392    10267      803     1402    21.8 |     1459 |
3.89/3.97	c |      1315 |       0    6393    10267     1312     1657    30.4 |     1459 |
3.89/3.97	c |      1986 |       0    6393    10267     1983     1993    41.9 |     1459 |
3.89/3.97	c |      2834 |       0    6395    10267     1837     2417    39.0 |     1459 |
3.89/3.97	c |      3876 |       0    6396    10267     2878     2938    50.2 |     1459 |
3.89/3.97	c |      5132 |       0    6396    10267     2635     3566    74.8 |     1459 |
3.89/3.97	c |      6623 |       0    6396    10267     4126     4311    82.5 |     1459 |
3.89/3.97	c |      8373 |       0    6396    10267     3630     5186   104.3 |     1459 |
3.89/3.97	c |     10408 |       0    6397    10267     5664     6204   103.8 |     1459 |
3.89/3.97	c |     12756 |       0    6397    10267     4652     7378    93.6 |     1459 |
3.89/3.97	c |     15449 |       0    6197    10245     7341     8724    91.5 |     1453 |
3.89/3.97	c |     18521 |       0    4953     9853     5201    10260    60.9 |     1388 |
3.89/3.97	c |     18698 |       0    4955     9853     5374    10349    59.5 |     1388 |
3.89/3.97	c ----- stats for thread 0 -----
3.89/3.97	c restarts: 107
3.89/3.97	c decisions: 105179
3.89/3.97	c propagations: 1324666
3.89/3.97	c conflicts: 18698
3.89/3.97	c 3.975s elapsed
3.89/3.97	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-1773817-1241303105/watcher-1773817-1241303105 -o /tmp/evaluation-result-1773817-1241303105/solver-1773817-1241303105 -C 10000 -W 12000 -M 1800 HOME/mxc-sat09 -i HOME/instance-1773817-1241303105.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 1.08 1.03 3/64 21785
/proc/meminfo: memFree=943280/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=3352 CPUtime=0
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 647 0 0 0 0 0 0 0 18 0 1 0 158337985 3432448 633 1992294400 134512640 135192793 4294956224 18446744073709551615 134568414 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 838 634 53 166 0 669 0

[startup+0.0726829 s]
/proc/loadavg: 1.00 1.08 1.03 3/64 21785
/proc/meminfo: memFree=943280/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=7456 CPUtime=0.06
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 1731 0 0 0 6 0 0 0 18 0 1 0 158337985 7634944 1557 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 1864 1558 56 166 0 1695 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 7456

[startup+0.101684 s]
/proc/loadavg: 1.00 1.08 1.03 3/64 21785
/proc/meminfo: memFree=943280/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=8512 CPUtime=0.09
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 2001 0 0 0 8 1 0 0 18 0 1 0 158337985 8716288 1827 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 2128 1827 56 166 0 1959 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 8512

[startup+0.301702 s]
/proc/loadavg: 1.00 1.08 1.03 3/64 21785
/proc/meminfo: memFree=943280/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=14472 CPUtime=0.29
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 3511 0 0 0 27 2 0 0 19 0 1 0 158337985 14819328 3337 1992294400 134512640 135192793 4294956224 18446744073709551615 134766703 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 3618 3337 56 166 0 3449 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 14472

[startup+0.701738 s]
/proc/loadavg: 1.00 1.08 1.03 3/64 21785
/proc/meminfo: memFree=943280/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=17480 CPUtime=0.69
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 4155 0 0 0 67 2 0 0 22 0 1 0 158337985 17899520 3981 1992294400 134512640 135192793 4294956224 18446744073709551615 134567884 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 4370 3981 56 166 0 4201 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 17480

[startup+1.50181 s]
/proc/loadavg: 1.00 1.08 1.03 2/65 21786
/proc/meminfo: memFree=927208/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=18172 CPUtime=1.49
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 4378 0 0 0 147 2 0 0 25 0 1 0 158337985 18608128 4204 1992294400 134512640 135192793 4294956224 18446744073709551615 134573794 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 4543 4204 56 166 0 4374 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 18172

[startup+3.10195 s]
/proc/loadavg: 1.00 1.08 1.03 2/65 21786
/proc/meminfo: memFree=926952/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=19344 CPUtime=3.09
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 4955 0 0 0 307 2 0 0 25 0 1 0 158337985 19808256 4578 1992294400 134512640 135192793 4294956224 18446744073709551615 134520473 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 4836 4578 73 166 0 4667 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 19344

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

[startup+3.50199 s]
/proc/loadavg: 1.00 1.08 1.03 2/65 21786
/proc/meminfo: memFree=925032/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=19344 CPUtime=3.49
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 4955 0 0 0 347 2 0 0 25 0 1 0 158337985 19808256 4578 1992294400 134512640 135192793 4294956224 18446744073709551615 134552371 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 4836 4578 73 166 0 4667 0
Current children cumulated CPU time (s) 3.49
Current children cumulated vsize (KiB) 19344

[startup+3.90102 s]
/proc/loadavg: 1.00 1.08 1.03 2/65 21786
/proc/meminfo: memFree=925032/2055920 swapFree=3992584/4192956
[pid=21785] ppid=21783 vsize=20400 CPUtime=3.89
/proc/21785/stat : 21785 (mxc-sat09) R 21783 21785 21721 0 -1 4194304 5215 0 0 0 386 3 0 0 25 0 1 0 158337985 20889600 4838 1992294400 134512640 135192793 4294956224 18446744073709551615 134549689 0 0 4096 0 0 0 0 17 1 0 0
/proc/21785/statm: 5100 4838 73 166 0 4931 0
Current children cumulated CPU time (s) 3.89
Current children cumulated vsize (KiB) 20400

Child status: 20
Real time (s): 3.98087
CPU time (s): 3.97939
CPU user time (s): 3.9434
CPU system time (s): 0.035994
CPU usage (%): 99.963
Max. virtual memory (cumulated for all children) (KiB): 20400

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 3.9434
system time used= 0.035994
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5218
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= 11

runsolver used 0.006998 second user time and 0.012998 second system time

The end

Launcher Data 

Begin job on node51 at 2009-05-03 00:25:05
IDJOB=1773817
IDBENCH=70803
IDSOLVER=613
FILE ID=node51/1773817-1241303105
PBS_JOBID= 9225207
Free space on /tmp= 66524 MiB

SOLVER NAME= MXC 2009-03-10
BENCH NAME= SAT09/APPLICATIONS/bitverif/maxand/maxand064.cnf
COMMAND LINE= HOME/mxc-sat09 -i BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1773817-1241303105/watcher-1773817-1241303105 -o /tmp/evaluation-result-1773817-1241303105/solver-1773817-1241303105 -C 10000 -W 12000 -M 1800  HOME/mxc-sat09 -i HOME/instance-1773817-1241303105.cnf

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

MD5SUM BENCH= b2d2617ddc348aef0d35df3c8f228dcb
RANDOM SEED=1340166247

node51.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		: 3000.214
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		: 3000.214
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:        943696 kB
Buffers:         79912 kB
Cached:         743900 kB
SwapCached:     194964 kB
Active:          60576 kB
Inactive:       960692 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        943696 kB
SwapTotal:     4192956 kB
SwapFree:      3992584 kB
Dirty:            1624 kB
Writeback:           0 kB
Mapped:          13604 kB
Slab:            76932 kB
Committed_AS:   549284 kB
PageTables:       1392 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= 66524 MiB
End job on node51 at 2009-05-03 00:25:09