Trace number 1783909

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 1.92971 1.93082

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 benchmark1.87571
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 

1.88/1.92	c starting MXC with:
1.88/1.92	c cnf_path = HOME/instance-1783909-1241898216.cnf
1.88/1.92	c restart_strategy = auto
1.88/1.92	c sign_strategy = cached
1.88/1.92	c use_preprocessing = -1
1.88/1.92	c output_implicant = 1
1.88/1.92	c timeout_seconds = 0
1.88/1.92	c running SatELite... c ===================================[MXC]=====================================
1.88/1.92	c | Conflicts |                Clause Statistics                   |   Vars   |
1.88/1.92	c |           |    CARD     BIN      O3+      L3+   L3+Lim  Lit/CL |          |
1.88/1.92	c =============================================================================
1.88/1.92	c |         0 |       0       0        0        0        0     nan |    90300 |
1.88/1.92	c ----- stats for thread 0 -----
1.88/1.92	c restarts: 0
1.88/1.92	c decisions: 0
1.88/1.92	c propagations: 0
1.88/1.92	c conflicts: 0
1.88/1.92	c 1.915s elapsed
1.88/1.92	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-1783909-1241898216/watcher-1783909-1241898216 -o /tmp/evaluation-result-1783909-1241898216/solver-1783909-1241898216 -C 5000 -W 6000 -M 1800 HOME/mxc-sat09 -i HOME/instance-1783909-1241898216.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 6000 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 1.00 3/64 31441
/proc/meminfo: memFree=1696096/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=5668 CPUtime=0
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 743 0 0 0 0 0 0 0 18 0 1 0 217848880 5804032 729 1992294400 134512640 135192793 4294956224 18446744073709551615 134779278 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 1417 735 46 166 0 1248 0

[startup+0.06595 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 31441
/proc/meminfo: memFree=1696096/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=27308 CPUtime=0.05
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 5344 0 0 0 3 2 0 0 18 0 1 0 217848880 27963392 5328 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 6827 5328 54 166 0 6658 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 27308

[startup+0.102953 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 31441
/proc/meminfo: memFree=1696096/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=28440 CPUtime=0.09
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 5624 0 0 0 7 2 0 0 18 0 1 0 217848880 29122560 5608 1992294400 134512640 135192793 4294956224 18446744073709551615 134560541 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 7110 5608 55 166 0 6941 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 28440

[startup+0.30197 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 31441
/proc/meminfo: memFree=1696096/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=32372 CPUtime=0.29
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 6552 0 0 0 26 3 0 0 19 0 1 0 217848880 33148928 6536 1992294400 134512640 135192793 4294956224 18446744073709551615 134756614 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 8093 6536 55 166 0 7924 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 32372

[startup+0.702005 s]
/proc/loadavg: 1.00 1.00 1.00 3/64 31441
/proc/meminfo: memFree=1696096/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=38944 CPUtime=0.69
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 8120 0 0 0 66 3 0 0 22 0 1 0 217848880 39878656 8104 1992294400 134512640 135192793 4294956224 18446744073709551615 134575990 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 9736 8104 55 166 0 9567 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 38944

[startup+1.50108 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 31442
/proc/meminfo: memFree=1666712/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=43720 CPUtime=1.49
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 10455 0 0 0 145 4 0 0 25 0 1 0 217848880 44769280 9233 1992294400 134512640 135192793 4294956224 18446744073709551615 134750438 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 10930 9233 56 166 0 10761 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 43720

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

[startup+1.90111 s]
/proc/loadavg: 1.00 1.00 1.00 2/65 31442
/proc/meminfo: memFree=1666712/2055920 swapFree=4181940/4192956
[pid=31441] ppid=31439 vsize=49132 CPUtime=1.88
/proc/31441/stat : 31441 (mxc-sat09) R 31439 31441 31222 0 -1 4194304 12000 0 0 0 184 4 0 0 25 0 1 0 217848880 50311168 10778 1992294400 134512640 135192793 4294956224 18446744073709551615 134575998 0 0 4096 0 0 0 0 17 1 0 0
/proc/31441/statm: 12283 10778 56 166 0 12114 0
Current children cumulated CPU time (s) 1.88
Current children cumulated vsize (KiB) 49132

Child status: 20
Real time (s): 1.93082
CPU time (s): 1.92971
CPU user time (s): 1.87171
CPU system time (s): 0.057991
CPU usage (%): 99.9422
Max. virtual memory (cumulated for all children) (KiB): 49132

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.87172
system time used= 0.057991
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 0.004999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node58 at 2009-05-09 21:43:37
IDJOB=1783909
IDBENCH=24728
IDSOLVER=613
FILE ID=node58/1783909-1241898216
PBS_JOBID= 9264757
Free space on /tmp= 66132 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-1783909-1241898216/watcher-1783909-1241898216 -o /tmp/evaluation-result-1783909-1241898216/solver-1783909-1241898216 -C 5000 -W 6000 -M 1800  HOME/mxc-sat09 -i HOME/instance-1783909-1241898216.cnf

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 4c3b2816cb16b0fd4134bf2c85ce45d0
RANDOM SEED=505127483

node58.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		: 3000.233
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		: 3000.233
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:       1696576 kB
Buffers:         37912 kB
Cached:         256896 kB
SwapCached:       4936 kB
Active:          88028 kB
Inactive:       215356 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1696576 kB
SwapTotal:     4192956 kB
SwapFree:      4181940 kB
Dirty:            5736 kB
Writeback:           0 kB
Mapped:          14708 kB
Slab:            42000 kB
Committed_AS:   672868 kB
PageTables:       1356 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= 66132 MiB
End job on node58 at 2009-05-09 21:43:39