Trace number 3266545

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
synit_sat 2011-03-03UNSAT 0.880865 0.8815

General information on the benchmark

NameSAT02/handmade/zhang-lintao/
xor-chain/x1_40.shuffled.cnf
MD5SUM15f5068fb216bf26d5385140ce74faaf
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.000999
Satisfiable
(Un)Satisfiability was proved
Number of variables118
Number of clauses314
Sum of the clauses size940
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 22
Number of clauses of size 3312
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.01	c start  0 total 0
0.00/0.01	c Find Units :          0
0.00/0.01	c Find Invs  :          1
0.00/0.01	c Find Ands  :          0 AvgFaninNum: nan
0.00/0.01	c Find Xors  :         78 AvgFaninNum: 2
0.00/0.01	c Find Ite   :          4
0.00/0.01	c UnDirect variable: 114
0.00/0.01	c UnDirect to Direct Gate: 52
0.00/0.01	c Forced Direct Gate: 41 Unuse unDirect Gate: 65
0.00/0.01	c Break Cycle : 3
0.00/0.01	c Total Root : 14 Undef Var: 67
0.00/0.01	c After covering, Total Root: 15 Leaf: 51
0.00/0.01	c Variable( cover/uncovered/unused ): 102 16 0
0.00/0.01	c Unit Clauses: 0
0.00/0.01	c Binary Clauses( cover/uncovered ): 2 0
0.00/0.01	c Clauses( cover/uncovered ): 200 112
0.00/0.01	c Total Clauses( cover/uncovered ): 202 112 64.3312%
0.00/0.01	c Covered Ands: 0 Invs: 1 Xors: 49 Ites: 1
0.00/0.01	c Uncover Clauses avg size: 3 max size: 3
0.00/0.01	c Final circuit: i/l/o/s      67       0     112       374
0.00/0.01	c cover rate 64.3312
0.00/0.01	c rocky end  0 total 0
0.00/0.01	c covering time  0 total 0
0.79/0.88	c solve time  0.87 total 0.87
0.79/0.88	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

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-3266545-1303582855/watcher-3266545-1303582855 -o /tmp/evaluation-result-3266545-1303582855/solver-3266545-1303582855 -C 2400 -W 1300 -M 7680 HOME/synit_sat HOME/instance-3266545-1303582855.cnf 1194011983 

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: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=30676 CPUtime=0 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 2135 0 0 0 0 0 0 0 23 0 1 0 469886419 31412224 2069 33554432000 4194304 4947581 140734045282672 18446744073709551615 4770912 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 7669 2070 383 184 0 2544 0

[startup+0.023236 s]
/proc/loadavg: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=38904 CPUtime=0.01 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 2397 0 0 0 1 0 0 0 23 0 1 0 469886419 39837696 2331 33554432000 4194304 4947581 140734045282672 18446744073709551615 270612807161 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 9726 2331 463 184 0 4601 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 38904

[startup+0.10025 s]
/proc/loadavg: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=55688 CPUtime=0.09 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 2657 0 0 0 9 0 0 0 23 0 1 0 469886419 57024512 2591 33554432000 4194304 4947581 140734045282672 18446744073709551615 270612807362 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 13922 2591 463 184 0 8797 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 55688

[startup+0.300222 s]
/proc/loadavg: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=55688 CPUtime=0.29 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 3165 0 0 0 29 0 0 0 25 0 1 0 469886419 57024512 3099 33554432000 4194304 4947581 140734045282672 18446744073709551615 4352469 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 13922 3099 469 184 0 8797 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 55688

[startup+0.701142 s]
/proc/loadavg: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=82176 CPUtime=0.69 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 4266 0 0 0 69 0 0 0 25 0 1 0 469886419 84148224 4200 33554432000 4194304 4947581 140734045282672 18446744073709551615 4399936 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 20544 4200 469 184 0 15419 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 82176

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

[startup+0.801124 s]
/proc/loadavg: 2.19 3.53 3.80 5/188 12815
/proc/meminfo: memFree=14447888/32951124 swapFree=67111528/67111528
[pid=12815] ppid=12813 vsize=91096 CPUtime=0.79 cores=4,6
/proc/12815/stat : 12815 (synit_sat) R 12813 12815 12159 0 -1 4202496 4589 0 0 0 79 0 0 0 25 0 1 0 469886419 93282304 4523 33554432000 4194304 4947581 140734045282672 18446744073709551615 4399798 0 0 4096 24578 0 0 0 17 4 0 0 0
/proc/12815/statm: 22774 4523 469 184 0 17649 0
Current children cumulated CPU time (s) 0.79
Current children cumulated vsize (KiB) 91096

Child status: 0
Real time (s): 0.8815
CPU time (s): 0.880865
CPU user time (s): 0.873867
CPU system time (s): 0.006998
CPU usage (%): 99.928
Max. virtual memory (cumulated for all children) (KiB): 91096

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.873867
system time used= 0.006998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4753
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= 5
involuntary context switches= 2

runsolver used 0.002999 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node108 at 2011-04-23 20:20:55
IDJOB=3266545
IDBENCH=87817
IDSOLVER=1571
FILE ID=node108/3266545-1303582855
RUNJOBID= node108-1303582855-12775
PBS_JOBID= 13150338
Free space on /tmp= 71396 MiB

SOLVER NAME= synit_sat 2011-03-03
BENCH NAME= SAT02/handmade/zhang-lintao/xor-chain/x1_40.shuffled.cnf
COMMAND LINE= HOME/synit_sat BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3266545-1303582855/watcher-3266545-1303582855 -o /tmp/evaluation-result-3266545-1303582855/solver-3266545-1303582855 -C 2400 -W 1300 -M 7680  HOME/synit_sat HOME/instance-3266545-1303582855.cnf 1194011983

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

MD5SUM BENCH= 15f5068fb216bf26d5385140ce74faaf
RANDOM SEED=1194011983

node108.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		: 2666.820
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	: 5333.64
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.77
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		: 2666.820
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	: 5332.82
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		: 2666.820
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		: 2666.820
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		: 2666.820
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	: 5332.83
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951124 kB
MemFree:      14452748 kB
Buffers:       2252988 kB
Cached:       15582212 kB
SwapCached:          0 kB
Active:        9949164 kB
Inactive:      7979400 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951124 kB
LowFree:      14452748 kB
SwapTotal:    67111528 kB
SwapFree:     67111528 kB
Dirty:            9540 kB
Writeback:           8 kB
AnonPages:       92328 kB
Mapped:          16152 kB
Slab:           505932 kB
PageTables:       5156 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587088 kB
Committed_AS:   311408 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= 71392 MiB
End job on node108 at 2011-04-23 20:20:56