Trace number 424042

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
SATzilla RANDOMUNSAT 2.46762 2.4856

General information on the benchmark

Namerandom/2+p/p0.8/v1665/
unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
MD5SUMa72030f9b5b8bc8b27629e6299239dd6
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.2808
Satisfiable
(Un)Satisfiability was proved
Number of variables1665
Number of clauses5177
Sum of the clauses size14496
Maximum clause length3
Minimum clause length2
Number of clauses of size 10
Number of clauses of size 21035
Number of clauses of size 34142
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

2.39/2.48	c run March_dl for 5 seconds ... 
2.39/2.48	c Bin: Executing march_dl
2.39/2.48	c child exited successfully
2.39/2.48	c march_dl returned code 20.
2.39/2.48	c main():: ***                                   [ march satisfiability solver ]                                   ***
2.39/2.48	c main()::  **            Copyright (C) 2001-2004 M. Dufour, M. Heule, J. van Zwieten and H. van Maaren            **
2.39/2.48	c main()::   * This program may be redistributed and/or modified under the terms of the GNU Gereral Public License *
2.39/2.48	c main()::
2.39/2.48	c initFormula():: searching for DIMACS p-line....
2.39/2.48	c initFormula():: the DIMACS p-line indicates a CNF of 1665 variables and 5177 clauses.
2.39/2.48	c parseCNF():: parsing....
2.39/2.48	c parseCNF():: the CNF contains 0 unary clauses.
2.39/2.48	c runParser():: parsing was successful, warming up engines...
2.39/2.48	c simplify_formula():: removed 0 tautological, 217 satisfied and 0 duplicate clauses
2.39/2.48	c preprocessing fase I completed:: there are now 1620 free variables and 4960 clauses.
2.39/2.48	c shorten_equivalence(): average equivalence length reduced from nan to nan
2.39/2.48	c doublelook_init():: 90% succes rate goal.
2.39/2.48	c root_subsume():: 20 ternary clauses were subsumed, nrofceq = 19
2.39/2.48	c find_and_remove_tautogolies():: found and removed 19 tautologies
2.39/2.48	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 25
2.39/2.48	c find_and_remove_tautogolies():: found and removed 6 tautologies
2.39/2.48	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 25
2.39/2.48	c lessRedundantTransformation():: nothing to be done.
2.39/2.48	c transformTo3SAT():: you gave me 1665 variables and 4853 clauses.
2.39/2.48	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
2.39/2.48	c transformTo3SAT():: CHAINPLUS defined.
2.39/2.48	c transformTo3SAT():: I will add 0 variables and 0 clauses!
2.39/2.48	c transformTo3SAT():: the transformation yielded 1665 variabels and 4853 clauses.
2.39/2.48	c main():: clause / variable ratio: ( 4853 / 1665 ) = 2.91
2.39/2.48	c doublelook_init():: 90% succes rate goal.
2.39/2.48	c AddTernaryResolvents(): ternary clauses increased from 4853 to 4883
2.39/2.48	c root_subsume():: 0 ternary clauses were subsumed, nrofceq = 25
2.39/2.48	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
2.39/2.48	c check_ternary_clause_density :: low
2.39/2.48	c root full lookahead
2.39/2.48	c freevars: 1579, independend: 1579, ternary clauses: 3853 
2.39/2.48	c main():: all systems go!
2.39/2.48	c |----------------------------------------------------------------|
c |*
c |**
c |***
c |****
c |*****
c |******
c |*******
c |********
c |*********
c |**********
c |***********
c |************
c |*************
c |**************
c |***************
c |****************
c |*****************
c |******************
c |*******************
c |********************
c |*********************
c |**********************
c |************************
c |*************************
c |**************************
c |***************************
c |****************************
c |********************************
c |*********************************
c |**********************************
c |***********************************
c |************************************
c |*************************************
c |**************************************
c |***************************************
c |****************************************
c |*****************************************
c |******************************************
c |********************************************
c |************************************************
c |*************************************************
c |**************************************************
c |****************************************************
c |*****************************************************
c |******************************************************
c |*******************************************************
c |********************************************************
c |*********************************************************
c |**********************************************************
c |************************************************************
c |****************************************************************
c |****************************************************************
2.39/2.48	c
2.39/2.48	c main():: nodeCount: 621
2.39/2.48	c main():: dead ends in main: 2
2.39/2.48	c main():: lookAheadCount: 560601
2.39/2.48	c main():: unitResolveCount: 22442
2.39/2.48	c main():: time=2.460000
2.39/2.48	c main():: necessary_assignments: 396
2.39/2.48	c main():: bin_sat: 0, bin_unsat 0
2.39/2.48	c main():: doublelook: #: 2556, succes #: 2306
2.39/2.48	c main():: doublelook: succesrate: 90.219, threshold: 0.111 * nrofvars
2.39/2.48	s UNSATISFIABLE
2.39/2.48	c SATZILLA_TIME=2.460000

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node7/watcher-424042-1177831802 -o ROOT/results/node7/solver-424042-1177831802 -C 5000 -W 7500 -M 1800 --output-limit 1,15 /tmp/evaluation/424042-1177831802/SATzilla2007_R /tmp/evaluation/424042-1177831802/instance-424042-1177831802.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 5000 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 5030 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 7500 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: 1.62 1.42 1.17 3/77 15943
/proc/meminfo: memFree=1622576/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=772 CPUtime=0
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 106 0 0 0 0 0 0 0 19 0 1 0 259217821 790528 101 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134669245 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 193 101 50 118 0 72 0

[startup+0.0606599 s]
/proc/loadavg: 1.62 1.42 1.17 3/77 15943
/proc/meminfo: memFree=1622576/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=1708 CPUtime=0.05
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 365 0 0 0 5 0 0 0 19 0 1 0 259217821 1748992 357 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134543089 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 427 357 65 118 0 306 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 3148

[startup+0.101664 s]
/proc/loadavg: 1.62 1.42 1.17 3/77 15943
/proc/meminfo: memFree=1622576/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2392 CPUtime=0.09
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 525 0 0 0 9 0 0 0 19 0 1 0 259217821 2449408 517 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134543096 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 598 517 72 118 0 477 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 3832

[startup+0.301685 s]
/proc/loadavg: 1.62 1.42 1.17 3/77 15943
/proc/meminfo: memFree=1622576/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2392 CPUtime=0.29
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 527 0 0 0 29 0 0 0 20 0 1 0 259217821 2449408 519 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134526954 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 598 519 74 118 0 477 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 3832

[startup+0.701727 s]
/proc/loadavg: 1.62 1.42 1.17 3/77 15943
/proc/meminfo: memFree=1622576/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2524 CPUtime=0.69
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 557 0 0 0 69 0 0 0 24 0 1 0 259217821 2584576 549 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134528065 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 631 549 74 118 0 510 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 3964

[startup+1.50181 s]
/proc/loadavg: 1.57 1.42 1.17 2/79 15945
/proc/meminfo: memFree=1620512/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2652 CPUtime=1.49
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 579 0 0 0 149 0 0 0 25 0 1 0 259217821 2715648 571 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134526937 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 663 571 74 118 0 542 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 4092

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

[startup+1.90186 s]
/proc/loadavg: 1.57 1.42 1.17 2/79 15945
/proc/meminfo: memFree=1620512/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2652 CPUtime=1.89
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 584 0 0 0 189 0 0 0 25 0 1 0 259217821 2715648 576 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134669341 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 663 577 74 118 0 542 0
Current children cumulated CPU time (s) 1.89
Current children cumulated vsize (KiB) 4092

[startup+2.3019 s]
/proc/loadavg: 1.57 1.42 1.17 2/79 15945
/proc/meminfo: memFree=1620256/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2652 CPUtime=2.29
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 590 0 0 0 229 0 0 0 25 0 1 0 259217821 2715648 582 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134527892 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 663 582 74 118 0 542 0
Current children cumulated CPU time (s) 2.29
Current children cumulated vsize (KiB) 4092

[startup+2.40191 s]
/proc/loadavg: 1.57 1.42 1.17 2/79 15945
/proc/meminfo: memFree=1620256/2055920 swapFree=4156360/4192956
[pid=15943] ppid=15941 vsize=1440 CPUtime=0
/proc/15943/stat : 15943 (SATzilla2007_R) S 15941 15943 13601 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 259217821 1474560 110 18446744073709551615 134512640 135579813 4294956656 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/15943/statm: 360 110 95 260 0 84 0
[pid=15944] ppid=15943 vsize=2652 CPUtime=2.39
/proc/15944/stat : 15944 (march_dl) R 15943 15943 13601 0 -1 4194304 591 0 0 0 239 0 0 0 25 0 1 0 259217821 2715648 583 18446744073709551615 134512640 134996440 4294956688 18446744073709551615 134514035 0 0 8392704 0 0 0 0 17 1 0 0
/proc/15944/statm: 663 583 74 118 0 542 0
Current children cumulated CPU time (s) 2.39
Current children cumulated vsize (KiB) 4092

Child status: 20
Real time (s): 2.4856
CPU time (s): 2.46762
CPU user time (s): 2.46163
CPU system time (s): 0.005999
CPU usage (%): 99.2769
Max. virtual memory (cumulated for all children) (KiB): 4092

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.46162
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 749
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= 13
involuntary context switches= 3

runsolver used 0.005999 second user time and 0.008998 second system time

The end

Launcher Data (download as text)

Begin job on node7 on Sun Apr 29 07:30:02 UTC 2007

IDJOB= 424042
IDBENCH= 20335
IDSOLVER= 191
FILE ID= node7/424042-1177831802

PBS_JOBID= 4718266

Free space on /tmp= 66556 MiB

SOLVER NAME= SATzilla RANDOM
BENCH NAME= HOME/pub/bench/SAT07/random/2+p/p0.8/v1665/unif2p-p0.8-v1665-c5178-S1104990816-03-UNSAT.cnf
COMMAND LINE= /tmp/evaluation/424042-1177831802/SATzilla2007_R /tmp/evaluation/424042-1177831802/instance-424042-1177831802.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node7/watcher-424042-1177831802 -o ROOT/results/node7/solver-424042-1177831802 -C 5000 -W 7500 -M 1800 --output-limit 1,15  /tmp/evaluation/424042-1177831802/SATzilla2007_R /tmp/evaluation/424042-1177831802/instance-424042-1177831802.cnf            

META MD5SUM SOLVER= d41d8cd98f00b204e9800998ecf8427e
MD5SUM BENCH=  a72030f9b5b8bc8b27629e6299239dd6

RANDOM SEED= 946897833

TIME LIMIT= 5000 seconds
MEMORY LIMIT= 1800 MiB

Linux node7.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		: 3000.231
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		: 3000.231
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:       1623048 kB
Buffers:         43708 kB
Cached:         313740 kB
SwapCached:      17164 kB
Active:         231640 kB
Inactive:       151620 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1623048 kB
SwapTotal:     4192956 kB
SwapFree:      4156360 kB
Dirty:            8592 kB
Writeback:           0 kB
Mapped:          31388 kB
Slab:            35056 kB
Committed_AS:  8979540 kB
PageTables:       1864 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= 66556 MiB

End job on node7 on Sun Apr 29 07:30:05 UTC 2007