Trace number 3259807

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
MPhaseSAT64 2011-03-03? 1.57076 1.57347

General information on the benchmark

NameCRAFTED/sgi/
new-difficult-23-189-21-75.cnf
MD5SUM46a186d5aa9ba41a176adf24fb365342
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.203968
Satisfiable
(Un)Satisfiability was proved
Number of variables483
Number of clauses25396
Sum of the clauses size51233
Maximum clause length23
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 225375
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 521

Solver Data 

1.49/1.57	c MPhaseSAT64 version 402 by Jingchao Chen,  April 1,2011
1.49/1.57	c input CNF file=HOME/instance-3259807-1303504259.cnf 
1.49/1.57	c Clause#=25396  var#=483  ratio=52 
1.49/1.57	c Simplified clause#=25396 
1.49/1.57	c XOR_varElimination deleted var#=0 clauses#=25396 
1.49/1.57	c inative var#=0 
1.49/1.57	c free var#=483  
1.49/1.57	c solving by ALO selection 
1.49/1.57	c 
1.49/1.57	c 
1.49/1.57	c SEGMENTATION FAULT 
1.49/1.57	c 
1.49/1.57	s UNKNOWN
1.49/1.57	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-3259807-1303504259/watcher-3259807-1303504259 -o /tmp/evaluation-result-3259807-1303504259/solver-3259807-1303504259 -C 2400 -W 1300 -M 7680 MPhaseSAT64 HOME/instance-3259807-1303504259.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: 3.67 3.85 3.04 4/189 25869
/proc/meminfo: memFree=13456272/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=3664 CPUtime=0 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 329 0 0 0 0 0 0 0 22 0 1 0 540656615 3751936 270 33554432000 134512640 134761588 4291379056 18446744073709551615 134531305 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 916 270 225 61 0 219 0

[startup+0.085894 s]
/proc/loadavg: 3.67 3.85 3.04 4/189 25869
/proc/meminfo: memFree=13456272/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=5000 CPUtime=0.08 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 1021 0 0 0 8 0 0 0 22 0 1 0 540656615 5120000 781 33554432000 134512640 134761588 4291379056 18446744073709551615 134616730 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 1250 781 269 61 0 553 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5000

[startup+0.100891 s]
/proc/loadavg: 3.67 3.85 3.04 4/189 25869
/proc/meminfo: memFree=13456272/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=5000 CPUtime=0.09 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 1021 0 0 0 9 0 0 0 22 0 1 0 540656615 5120000 781 33554432000 134512640 134761588 4291379056 18446744073709551615 134616738 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 1250 781 269 61 0 553 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 5000

[startup+0.300849 s]
/proc/loadavg: 3.67 3.85 3.04 4/189 25869
/proc/meminfo: memFree=13456272/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=5256 CPUtime=0.29 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 1085 0 0 0 29 0 0 0 23 0 1 0 540656615 5382144 845 33554432000 134512640 134761588 4291379056 18446744073709551615 134614436 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 1314 845 269 61 0 617 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 5256

[startup+0.700771 s]
/proc/loadavg: 3.67 3.85 3.04 4/189 25869
/proc/meminfo: memFree=13456272/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=5256 CPUtime=0.69 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 1085 0 0 0 69 0 0 0 25 0 1 0 540656615 5382144 845 33554432000 134512640 134761588 4291379056 18446744073709551615 134616727 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 1314 845 269 61 0 617 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 5256

[startup+1.50062 s]
/proc/loadavg: 3.69 3.86 3.04 5/190 25870
/proc/meminfo: memFree=13453676/32950928 swapFree=67111528/67111528
[pid=25869] ppid=25867 vsize=5256 CPUtime=1.49 cores=4,6
/proc/25869/stat : 25869 (MPhaseSAT64) R 25867 25869 25554 0 -1 4202496 1090 0 0 0 149 0 0 0 25 0 1 0 540656615 5382144 850 33554432000 134512640 134761588 4291379056 18446744073709551615 134747265 0 0 4096 1026 0 0 0 17 4 0 0 0
/proc/25869/statm: 1314 850 274 61 0 617 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 5256

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

Child status: 0
Real time (s): 1.57347
CPU time (s): 1.57076
CPU user time (s): 1.56876
CPU system time (s): 0.001999
CPU usage (%): 99.8278
Max. virtual memory (cumulated for all children) (KiB): 5256

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.56876
system time used= 0.001999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1120
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 0.002999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node114 at 2011-04-22 22:30:59
IDJOB=3259807
IDBENCH=71805
IDSOLVER=1521
FILE ID=node114/3259807-1303504259
RUNJOBID= node114-1303502915-25573
PBS_JOBID= 13134223
Free space on /tmp= 71240 MiB

SOLVER NAME= MPhaseSAT64 2011-03-03
BENCH NAME= SAT09/CRAFTED/sgi/new-difficult-23-189-21-75.cnf
COMMAND LINE= MPhaseSAT64 BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3259807-1303504259/watcher-3259807-1303504259 -o /tmp/evaluation-result-3259807-1303504259/solver-3259807-1303504259 -C 2400 -W 1300 -M 7680  MPhaseSAT64 HOME/instance-3259807-1303504259.cnf

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

MD5SUM BENCH= 46a186d5aa9ba41a176adf24fb365342
RANDOM SEED=609681229

node114.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		: 2666.848
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	: 5333.69
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		: 2666.848
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	: 5226.15
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		: 2666.848
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	: 5332.74
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		: 2666.848
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	: 5332.73
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		: 2666.848
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	: 5332.75
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		: 2666.848
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		: 2666.848
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	: 5332.74
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		: 2666.848
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:     32950928 kB
MemFree:      13456304 kB
Buffers:       1911704 kB
Cached:       16819252 kB
SwapCached:          0 kB
Active:        9526504 kB
Inactive:      9387884 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32950928 kB
LowFree:      13456304 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:           17200 kB
Writeback:           0 kB
AnonPages:      183136 kB
Mapped:          16592 kB
Slab:           516804 kB
PageTables:       5432 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83586992 kB
Committed_AS:   368636 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= 71240 MiB
End job on node114 at 2011-04-22 22:31:01