Trace number 3376802

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
QuteRSat 2011-05-12 (fixed)UNSAT 1.07683 1.0817

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 Set FPU double precision.
0.00/0.01	c Parse Cnf success: #var: 118 #clause: 314
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: 46
0.00/0.01	c Forced Direct Gate: 34 Unuse unDirect Gate: 67
0.00/0.01	c Break Cycle : 3
0.00/0.01	c Total Root : 11 Undef Var: 73
0.00/0.01	c After covering, Total Root: 12 Leaf: 47
0.00/0.01	c Variable( cover/uncovered/unused ): 92 26 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 ): 176 136
0.00/0.01	c Total Clauses( cover/uncovered ): 178 136 56.6879%
0.00/0.01	c Covered Ands: 0 Invs: 1 Xors: 43 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      73       0     136       404
0.00/0.01	c CnfToAig: Time: 0 s
0.00/0.02	c TmMap: Set choices finish.
0.00/0.02	c TmMap: Set big and: 136
0.00/0.02	c TmMap: Origin: 478 ClauseNum: 1212 --> New: 253 ClauseNum: 716
0.00/0.02	c TmMap: Time: 0
0.00/0.02	c Simulation --> TransNum: 716/716 Try to Add: #clause: 444 #xorclause: 0
0.00/0.02	c #var: 116 #clauses: 309 Solving... 
0.99/1.07	s UNSATISFIABLE
0.99/1.08	c CPU time: 1.06 s

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: 961)

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-3376802-1305476058/watcher-3376802-1305476058 -o /tmp/evaluation-result-3376802-1305476058/solver-3376802-1305476058 -C 2400 -W 1300 -M 7680 qutersat_release HOME/instance-3376802-1305476058.cnf 1292369427 

running on 2 cores: 0,2

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: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=33388 CPUtime=0 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 2019 0 0 0 0 0 0 0 23 0 1 0 659205442 34189312 1955 33554432000 4194304 6014671 140735737634048 18446744073709551615 4778066 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 8347 1957 446 445 0 1892 0

[startup+0.0773129 s]
/proc/loadavg: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=54028 CPUtime=0.06 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 3634 0 0 0 6 0 0 0 23 0 1 0 659205442 55324672 3570 33554432000 4194304 6014671 140735737634048 18446744073709551615 4422965 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 13507 3570 726 445 0 7052 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 54028

[startup+0.100328 s]
/proc/loadavg: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=54028 CPUtime=0.09 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 3693 0 0 0 9 0 0 0 23 0 1 0 659205442 55324672 3629 33554432000 4194304 6014671 140735737634048 18446744073709551615 4422683 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 13507 3630 726 445 0 7052 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 54028

[startup+0.304173 s]
/proc/loadavg: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=79504 CPUtime=0.3 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 4173 0 0 0 30 0 0 0 25 0 1 0 659205442 81412096 4109 33554432000 4194304 6014671 140735737634048 18446744073709551615 4378592 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 19876 4109 726 445 0 13421 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 79504

[startup+0.7002 s]
/proc/loadavg: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=88624 CPUtime=0.68 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 4730 0 0 0 68 0 0 0 25 0 1 0 659205442 90750976 4666 33554432000 4194304 6014671 140735737634048 18446744073709551615 4423940 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 22156 4666 727 445 0 15701 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 88624

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

[startup+0.901155 s]
/proc/loadavg: 2.76 3.04 3.39 1/287 19886
/proc/meminfo: memFree=16545940/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=97488 CPUtime=0.88 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 5146 0 0 0 88 0 0 0 25 0 1 0 659205442 99827712 5082 33554432000 4194304 6014671 140735737634048 18446744073709551615 274664506464 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 24372 5082 727 445 0 17917 0
Current children cumulated CPU time (s) 0.88
Current children cumulated vsize (KiB) 97488

[startup+1.00115 s]
/proc/loadavg: 2.76 3.04 3.39 4/301 19915
/proc/meminfo: memFree=16487912/32951132 swapFree=67093824/67111528
[pid=19886] ppid=19884 vsize=97488 CPUtime=0.99 cores=0,2
/proc/19886/stat : 19886 (qutersat_releas) R 19884 19886 18511 0 -1 4202496 5176 0 0 0 99 0 0 0 25 0 1 0 659205442 99827712 5112 33554432000 4194304 6014671 140735737634048 18446744073709551615 4423087 0 0 4096 16386 0 0 0 17 0 0 0 0
/proc/19886/statm: 24372 5112 727 445 0 17917 0
Current children cumulated CPU time (s) 0.99
Current children cumulated vsize (KiB) 97488

Child status: 0
Real time (s): 1.0817
CPU time (s): 1.07683
CPU user time (s): 1.06784
CPU system time (s): 0.008998
CPU usage (%): 99.55
Max. virtual memory (cumulated for all children) (KiB): 97488

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.06784
system time used= 0.008998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 5219
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= 10
involuntary context switches= 2

runsolver used 0.008998 second user time and 0.021996 second system time

The end

Launcher Data 

Begin job on node131 at 2011-05-15 18:14:18
IDJOB=3376802
IDBENCH=87817
IDSOLVER=1856
FILE ID=node131/3376802-1305476058
RUNJOBID= node131-1305476058-19872
PBS_JOBID= 13325314
Free space on /tmp= 73708 MiB

SOLVER NAME= QuteRSat 2011-05-12 (fixed)
BENCH NAME= SAT02/handmade/zhang-lintao/xor-chain/x1_40.shuffled.cnf
COMMAND LINE= qutersat_release BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-3376802-1305476058/watcher-3376802-1305476058 -o /tmp/evaluation-result-3376802-1305476058/solver-3376802-1305476058 -C 2400 -W 1300 -M 7680  qutersat_release HOME/instance-3376802-1305476058.cnf 1292369427

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

MD5SUM BENCH= 15f5068fb216bf26d5385140ce74faaf
RANDOM SEED=1292369427

node131.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		: 2666.830
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	: 5333.66
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		: 2666.830
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	: 5332.75
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		: 2666.830
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	: 5332.83
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		: 2666.830
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		: 2666.830
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	: 5332.77
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		: 2666.830
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		: 2666.830
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		: 2666.830
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	: 5332.74
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management: [8]


/proc/meminfo:
MemTotal:     32951132 kB
MemFree:      16546228 kB
Buffers:        295540 kB
Cached:        4361660 kB
SwapCached:       1504 kB
Active:       12652912 kB
Inactive:      3485752 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     32951132 kB
LowFree:      16546228 kB
SwapTotal:    67111528 kB
SwapFree:     67093824 kB
Dirty:            1988 kB
Writeback:           0 kB
AnonPages:    11480524 kB
Mapped:          27284 kB
Slab:           168124 kB
PageTables:      35268 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  83587092 kB
Committed_AS: 29791100 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    296000 kB
VmallocChunk: 34359440975 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 73700 MiB
End job on node131 at 2011-05-15 18:14:19