Trace number 310825

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, and are wall clock time (not CPU 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
minisat SAT 2007 (with assertions)UNSAT 0.791878 0.793658

General information on the benchmark

Namerandom/2+p/p0.8/v1295/
unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
MD5SUM76f071535d514b4b4cd5d986eb064c1d
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.396938
Satisfiable
(Un)Satisfiability was proved
Number of variables1294
Number of clauses4026
Sum of the clauses size11273
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 2805
Number of clauses of size 33221
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

0.00/0.00	c This is MiniSat 2.0 (Feb 1 2007, SAT-Competition version)
0.00/0.00	c ============================[ Problem Statistics ]=============================
0.00/0.00	c |                                                                             |
0.00/0.00	c |  Number of variables:  1295                                                 |
0.00/0.00	c |  Number of clauses:    4026                                                 |
0.00/0.00	c |  Parsing time:         0.00         s                                       |
0.00/0.01	c ============================[ Search Statistics ]==============================
0.00/0.01	c | Conflicts |          ORIGINAL         |          LEARNT          | Progress |
0.00/0.01	c |           |    Vars  Clauses Literals |    Limit  Clauses Lit/Cl |          |
0.00/0.01	c ===============================================================================
0.00/0.01	c |         0 |    1062     3674    11001 |     1224        0    nan |  0.000 % |
0.00/0.01	c |       101 |    1062     3674    11001 |     1347      101     11 |  0.078 % |
0.00/0.02	c |       251 |    1062     3674    11001 |     1481      250     13 |  0.386 % |
0.00/0.04	c |       476 |    1058     3648    10924 |     1630      475     13 |  0.386 % |
0.00/0.06	c |       813 |    1058     3648    10924 |     1793      812     14 |  0.386 % |
0.00/0.10	c |      1320 |    1058     3648    10924 |     1972     1319     14 |  0.386 % |
0.10/0.16	c |      2079 |    1058     3648    10924 |     2169     1058     14 |  0.386 % |
0.20/0.24	c |      3218 |    1058     3648    10924 |     2386     2197     14 |  0.386 % |
0.30/0.38	c |      4928 |    1055     3634    10882 |     2625     1260     12 |  0.618 % |
0.51/0.60	c |      7490 |    1054     3627    10862 |     2887     1720     15 |  0.695 % |
0.71/0.79	c ===============================================================================
0.71/0.79	c restarts              : 10
0.71/0.79	c conflicts             : 9496           (12022 /sec)
0.71/0.79	c decisions             : 11660          (1.68 % random) (14762 /sec)
0.71/0.79	c propagations          : 1427266        (1806943 /sec)
0.71/0.79	c conflict literals     : 136687         (42.71 % deleted)
0.71/0.79	c Memory used           : 2.33 MB
0.71/0.79	c CPU time              : 0.789879 s
0.71/0.79	c 
0.71/0.79	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node63/watcher-310825-1172562110 -o ROOT/results/node63/solver-310825-1172562110 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/310825-1172562110/minisat /tmp/evaluation/310825-1172562110/instance-310825-1172562110.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 0.90 0.98 0.98 3/64 14673
/proc/meminfo: memFree=1818208/2055920 swapFree=4179040/4192956
[pid=14673] ppid=14671 vsize=2024 CPUtime=0
/proc/14673/stat : 14673 (minisat) R 14671 14673 13612 0 -1 4194304 185 0 0 0 0 0 0 0 18 0 1 0 276168375 2072576 169 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134710340 0 0 4096 3 0 0 0 17 1 0 0
/proc/14673/statm: 506 169 58 138 0 365 0

[startup+0.106574 s]
/proc/loadavg: 0.90 0.98 0.98 3/64 14673
/proc/meminfo: memFree=1818208/2055920 swapFree=4179040/4192956
[pid=14673] ppid=14671 vsize=2252 CPUtime=0.1
/proc/14673/stat : 14673 (minisat) R 14671 14673 13612 0 -1 4194304 244 0 0 0 10 0 0 0 18 0 1 0 276168375 2306048 228 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550683 0 0 4096 3 0 0 0 17 1 0 0
/proc/14673/statm: 563 228 73 138 0 422 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 2252

[startup+0.514616 s]
/proc/loadavg: 0.90 0.98 0.98 3/64 14673
/proc/meminfo: memFree=1818208/2055920 swapFree=4179040/4192956
[pid=14673] ppid=14671 vsize=2384 CPUtime=0.51
/proc/14673/stat : 14673 (minisat) R 14671 14673 13612 0 -1 4194304 271 0 0 0 51 0 0 0 21 0 1 0 276168375 2441216 255 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550596 0 0 4096 3 0 0 0 17 1 0 0
/proc/14673/statm: 596 255 73 138 0 455 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 2384

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

[startup+0.616627 s]
/proc/loadavg: 0.90 0.98 0.98 3/64 14673
/proc/meminfo: memFree=1818208/2055920 swapFree=4179040/4192956
[pid=14673] ppid=14671 vsize=2384 CPUtime=0.61
/proc/14673/stat : 14673 (minisat) R 14671 14673 13612 0 -1 4194304 272 0 0 0 61 0 0 0 22 0 1 0 276168375 2441216 256 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134556309 0 0 4096 3 0 0 0 17 1 0 0
/proc/14673/statm: 596 256 73 138 0 455 0
Current children cumulated CPU time (s) 0.61
Current children cumulated vsize (KiB) 2384

[startup+0.718638 s]
/proc/loadavg: 0.90 0.98 0.98 3/64 14673
/proc/meminfo: memFree=1818208/2055920 swapFree=4179040/4192956
[pid=14673] ppid=14671 vsize=2384 CPUtime=0.71
/proc/14673/stat : 14673 (minisat) R 14671 14673 13612 0 -1 4194304 274 0 0 0 71 0 0 0 23 0 1 0 276168375 2441216 258 18446744073709551615 134512640 135078472 4294956704 18446744073709551615 134550726 0 0 4096 3 0 0 0 17 1 0 0
/proc/14673/statm: 596 258 73 138 0 455 0
Current children cumulated CPU time (s) 0.71
Current children cumulated vsize (KiB) 2384

Child status: 0
Real time (s): 0.793658
CPU time (s): 0.791878
CPU user time (s): 0.790879
CPU system time (s): 0.000999
CPU usage (%): 99.7757
Max. virtual memory (cumulated for all children) (KiB): 2384

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.790879
system time used= 0.000999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 280
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= 8
involuntary context switches= 3

runsolver used 0.000999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node63 on Tue Feb 27 07:41:50 UTC 2007

IDJOB= 310825
IDBENCH= 20297
IDSOLVER= 109
FILE ID= node63/310825-1172562110

PBS_JOBID= 3971867

Free space on /tmp= 66559 MiB

SOLVER NAME= minisat SAT 2007
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1295/unif2p-p0.8-v1295-c4027-S1240130681-11-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/310825-1172562110/minisat /tmp/evaluation/310825-1172562110/instance-310825-1172562110.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node63/watcher-310825-1172562110 -o ROOT/results/node63/solver-310825-1172562110 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/310825-1172562110/minisat /tmp/evaluation/310825-1172562110/instance-310825-1172562110.cnf            

META MD5SUM SOLVER= 120abd248b069e44985635f055606c5a
MD5SUM BENCH=  76f071535d514b4b4cd5d986eb064c1d

RANDOM SEED= 733879579

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node63.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.214
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		: 3000.214
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:       1818616 kB
Buffers:         31208 kB
Cached:         153720 kB
SwapCached:       8192 kB
Active:         109128 kB
Inactive:        89812 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1818616 kB
SwapTotal:     4192956 kB
SwapFree:      4179040 kB
Dirty:            1060 kB
Writeback:           0 kB
Mapped:          15440 kB
Slab:            24372 kB
Committed_AS:   661656 kB
PageTables:       1460 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= 66559 MiB

End job on node63 on Tue Feb 27 07:41:51 UTC 2007