Trace number 3291433

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
MPhaseSAT 2011-02-15? 1.64375 1.64683

General information on the benchmark

NameSAT03/industrial/li/li-exam/
li-exam-61.shuffled-as.sat03-366.cnf
MD5SUM3be662940f394fa876137a905247d755
Bench CategoryAPPLICATION (applications instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables28147
Number of clauses108436
Sum of the clauses size373110
Maximum clause length166
Minimum clause length1
Number of clauses of size 114
Number of clauses of size 218786
Number of clauses of size 351588
Number of clauses of size 437440
Number of clauses of size 53
Number of clauses of size over 5605

Solver Data 

1.59/1.64	c MPhaseSAT version 401 by Jingchao Chen,  April 1, 2011
1.59/1.64	c input CNF file=HOME/instance-3291433-1303784734.cnf 
1.59/1.64	c Clause#=108436  var#=28147  ratio=3 
1.59/1.64	c phase 1 
1.59/1.64	c Simplified clause#=114151 
1.59/1.64	c XOR_varElimination deleted var#=84 clauses#=107716 
1.59/1.64	c before shortening average=12.879674, XOR clauses#=6740 
1.59/1.64	c 
1.59/1.64	c 
1.59/1.64	c SEGMENTATION FAULT 
1.59/1.64	c 
1.59/1.64	s UNKNOWN
1.59/1.64	c

Verifier Data 

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer: UNKNOWN

Watcher Data 

runsolver Copyright (C) 2010-2011 Olivier ROUSSEL

This is runsolver version 3.3.0 (svn: 935)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-3291433-1303784734/watcher-3291433-1303784734 -o /tmp/evaluation-result-3291433-1303784734/solver-3291433-1303784734 -C 2400 -W 1300 -M 7680 MPhaseSAT HOME/instance-3291433-1303784734.cnf 

running on 2 cores: 4,6

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 2400 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 2430 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1300 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 7864320 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 7915520 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.29 2.03 2.87 5/189 25886
/proc/meminfo: memFree=16785428/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=4736 CPUtime=0 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 319 0 0 0 0 0 0 0 21 0 1 0 470889070 4849664 260 33554432000 134512640 134731564 4292593024 18446744073709551615 4294960144 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 1184 260 225 54 0 494 0

[startup+0.0249971 s]
/proc/loadavg: 1.29 2.03 2.87 5/189 25886
/proc/meminfo: memFree=16785428/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=4736 CPUtime=0.01 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 412 0 0 0 1 0 0 0 21 0 1 0 470889070 4849664 353 33554432000 134512640 134731564 4292593024 18446744073709551615 134531593 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 1184 353 225 54 0 494 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 4736

[startup+0.10098 s]
/proc/loadavg: 1.29 2.03 2.87 5/189 25886
/proc/meminfo: memFree=16785428/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=4980 CPUtime=0.09 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 783 0 0 0 9 0 0 0 21 0 1 0 470889070 5099520 724 33554432000 134512640 134731564 4292593024 18446744073709551615 2807051 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 1245 724 226 54 0 555 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 4980

[startup+0.300939 s]
/proc/loadavg: 1.29 2.03 2.87 5/189 25886
/proc/meminfo: memFree=16785428/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=14904 CPUtime=0.29 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 8050 0 0 0 28 1 0 0 22 0 1 0 470889070 15261696 3201 33554432000 134512640 134731564 4292593024 18446744073709551615 3057148 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 3726 3202 250 54 0 3036 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 14904

[startup+0.700861 s]
/proc/loadavg: 1.29 2.03 2.87 5/189 25886
/proc/meminfo: memFree=16785428/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=22956 CPUtime=0.69 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 10270 0 0 0 68 1 0 0 23 0 1 0 470889070 23506944 5230 33554432000 134512640 134731564 4292593024 18446744073709551615 134665622 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 5739 5230 261 54 0 5049 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 22956

[startup+1.50073 s]
/proc/loadavg: 1.29 2.03 2.87 5/190 25887
/proc/meminfo: memFree=16761372/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=9792 CPUtime=1.49 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 18071 0 0 0 147 2 0 0 25 0 1 0 470889070 10027008 1918 33554432000 134512640 134731564 4292593024 18446744073709551615 134582200 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 2448 1918 268 54 0 1758 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 9792

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

[startup+1.60072 s]
/proc/loadavg: 1.29 2.03 2.87 5/190 25887
/proc/meminfo: memFree=16761372/32951124 swapFree=67111528/67111528
[pid=25886] ppid=25884 vsize=12736 CPUtime=1.59 cores=4,6
/proc/25886/stat : 25886 (MPhaseSAT) R 25884 25886 24832 0 -1 4202496 18659 0 0 0 157 2 0 0 25 0 1 0 470889070 13041664 1948 33554432000 134512640 134731564 4292593024 18446744073709551615 134579813 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25886/statm: 3184 1948 268 54 0 2494 0
Current children cumulated CPU time (s) 1.59
Current children cumulated vsize (KiB) 12736

Child status: 0
Real time (s): 1.64683
CPU time (s): 1.64375
CPU user time (s): 1.61575
CPU system time (s): 0.027995
CPU usage (%): 99.8129
Max. virtual memory (cumulated for all children) (KiB): 22956

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.61575
system time used= 0.027995
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 20373
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= 6
involuntary context switches= 2

runsolver used 0.004999 second user time and 0.007998 second system time

The end

Launcher Data 

Begin job on node141 at 2011-04-26 04:25:35
IDJOB=3291433
IDBENCH=84223
IDSOLVER=1520
FILE ID=node141/3291433-1303784734
RUNJOBID= node141-1303784734-25845
PBS_JOBID= 13157228
Free space on /tmp= 71748 MiB

SOLVER NAME= MPhaseSAT 2011-02-15
BENCH NAME= SAT03/industrial/li/li-exam/li-exam-61.shuffled-as.sat03-366.cnf
COMMAND LINE= MPhaseSAT BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3291433-1303784734/watcher-3291433-1303784734 -o /tmp/evaluation-result-3291433-1303784734/solver-3291433-1303784734 -C 2400 -W 1300 -M 7680  MPhaseSAT HOME/instance-3291433-1303784734.cnf

TIME LIMIT= 2400 seconds
MEMORY LIMIT= 7680 MiB
NBCORE= 2

MD5SUM BENCH= 3be662940f394fa876137a905247d755
RANDOM SEED=837596394

node141.alineos.net Linux 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5333.61
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5362.96
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.82
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.84
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.806
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
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 rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr popcnt lahf_lm
bogomips	: 5332.75
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      16785584 kB
Buffers:       1596644 kB
Cached:       13900316 kB
SwapCached:          0 kB
Active:        6175836 kB
Inactive:      9415140 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      16785584 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:            8328 kB
Writeback:           0 kB
AnonPages:       93948 kB
Mapped:          16032 kB
Slab:           509976 kB
PageTables:       4748 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   276200 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296008 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 71748 MiB
End job on node141 at 2011-04-26 04:25:36