Trace number 1732012

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
march_hi hiUNSAT 4.28235 4.28732

General information on the benchmark

NameCRAFTED/sgen/unsat/
sgen1-unsat-61-100.cnf
MD5SUM43b8e7efe061e21db6b4c047915ae87c
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.959853
Satisfiable
(Un)Satisfiability was proved
Number of variables61
Number of clauses132
Sum of the clauses size396
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 3132
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.00	c main():: ***                                   [ march satisfiability solver ]                                   ***
0.00/0.00	c main()::  **                Copyright (C) 2001-2009 M.J.H. Heule, J.E. van Zwieten, and M. Dufour                 **
0.00/0.00	c main()::   *  This program may be redistributed and/or modified under the terms of the GNU Gereral Public License  *
0.00/0.00	c main()::
0.00/0.00	c initFormula():: searching for DIMACS p-line....
0.00/0.00	c initFormula():: the DIMACS p-line indicates a CNF of 61 variables and 132 clauses.
0.00/0.00	c parseCNF():: parsing....
0.00/0.00	c parseCNF():: the CNF contains 0 unary clauses.
0.00/0.00	c runParser():: parsing was successful, warming up engines...
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c preprocessing fase I completed:: there are now 61 free variables and 132 clauses.
0.00/0.00	c stat :: sign balance is biased by 0.081
0.00/0.00	c using 3-SAT heuristics (occurence based diff)
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 456 duplicate clauses
0.00/0.00	c lessRedundantTransformation():: nothing to be done.
0.00/0.00	c transformTo3SAT():: you gave me 61 variables and 132 clauses.
0.00/0.00	c transformTo3SAT():: by the way, the maximal clause length before transformation was 3.
0.00/0.00	c transformTo3SAT():: I will add 0 variables and 0 clauses!
0.00/0.00	c transformTo3SAT():: the transformation yielded 61 variabels and 132 clauses.
0.00/0.00	c main():: clause / variable ratio: ( 132 / 61 ) = 2.16
0.00/0.00	c longest clause has size 3
0.00/0.00	c simplify_formula():: removed 0 tautological, 0 satisfied and 0 duplicate clauses
0.00/0.00	c number of free variables = 61
0.00/0.00	c dynamic_preselect_setsize :: off
0.00/0.00	c main():: all systems go!
0.00/0.00	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| ( 0/10) NodeCount: 281
0.00/0.01	c |----------------------------------------------------------------|
c |*
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c |********************************
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c |****************************************************************| ( 1/10) NodeCount: 1429
0.00/0.08	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 2/10) NodeCount: 6221
0.30/0.35	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 3/10) NodeCount: 16451
0.90/0.93	c |----------------------------------------------------------------|
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c |***************************************************************
c |****************************************************************| ( 4/10) NodeCount: 30274
1.70/1.72	c |----------------------------------------------------------------|
c |*
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c |****************************************************************| ( 5/10) NodeCount: 46403
2.59/2.65	c |----------------------------------------------------------------|
c |*
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c |****************
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c |********************************
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c |****************************************************************| ( 6/10) NodeCount: 60698
3.39/3.50	c |----------------------------------------------------------------|
c |*
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c |****************
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c |****************************************************************| ( 7/10) NodeCount: 70111
3.99/4.04	c |----------------------------------------------------------------|
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c |****************************************************************| ( 8/10) NodeCount: 73161
4.19/4.23	c |----------------------------------------------------------------|
c |*
c |**
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c |****
c |*****
c |******
c |********
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c |************
c |****************
c |*****************
c |******************
c |********************
c |************************
c |********************************
c |*********************************
c |**********************************
c |************************************
c |****************************************
c |************************************************
c |****************************************************************| ( 9/10) NodeCount: 73996
4.19/4.28	c |----------------------------------------------------------------|
c |*
c |**
c |****
c |********
c |****************
c |********************************
c |****************************************************************| (10/10) NodeCount: 74094
4.19/4.28	c |----------------------------------------------------------------|
c |
4.19/4.28	c
4.19/4.28	c main():: nodeCount: 74094
4.19/4.28	c main():: dead ends in main: 3013
4.19/4.28	c main():: lookAheadCount: 2911266
4.19/4.28	c main():: unitResolveCount: 293578
4.19/4.28	c main():: time=4.270000
4.19/4.28	c main():: necessary_assignments: 3225
4.19/4.28	c main():: bin_sat: 0, bin_unsat 0
4.19/4.28	c main():: doublelook: #: 86183, succes #: 42476
4.19/4.28	c main():: doublelook: overall 3.138 of all possible doublelooks executed
4.19/4.28	c main():: doublelook: succesrate: 49.286, average DL_trigger: 16.024
4.19/4.28	s UNSATISFIABLE

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1732012-1240776880/watcher-1732012-1240776880 -o /tmp/evaluation-result-1732012-1240776880/solver-1732012-1240776880 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/march_hi HOME/instance-1732012-1240776880.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 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: 0.85 0.97 1.06 3/65 24679
/proc/meminfo: memFree=1815648/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=840 CPUtime=0
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 139 0 0 0 0 0 0 0 18 0 1 0 105715725 860160 122 1992294400 134512640 135197378 4294956240 18446744073709551615 134697414 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 210 122 91 167 0 41 0

[startup+0.00768597 s]
/proc/loadavg: 0.85 0.97 1.06 3/65 24679
/proc/meminfo: memFree=1815648/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=840 CPUtime=0
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 140 0 0 0 0 0 0 0 18 0 1 0 105715725 860160 123 1992294400 134512640 135197378 4294956240 18446744073709551615 134556344 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 210 123 91 167 0 41 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 840

[startup+0.101694 s]
/proc/loadavg: 0.85 0.97 1.06 3/65 24679
/proc/meminfo: memFree=1815648/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=0.1
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 149 0 0 0 10 0 0 0 18 0 1 0 105715725 995328 132 1992294400 134512640 135197378 4294956240 18446744073709551615 134525291 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 132 91 167 0 74 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 972

[startup+0.301713 s]
/proc/loadavg: 0.85 0.97 1.06 3/65 24679
/proc/meminfo: memFree=1815648/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=0.3
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 149 0 0 0 30 0 0 0 19 0 1 0 105715725 995328 132 1992294400 134512640 135197378 4294956240 18446744073709551615 134617963 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 132 91 167 0 74 0
Current children cumulated CPU time (s) 0.3
Current children cumulated vsize (KiB) 972

[startup+0.701752 s]
/proc/loadavg: 0.85 0.97 1.06 3/65 24679
/proc/meminfo: memFree=1815648/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=0.7
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 157 0 0 0 70 0 0 0 22 0 1 0 105715725 995328 140 1992294400 134512640 135197378 4294956240 18446744073709551615 134539323 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 140 91 167 0 74 0
Current children cumulated CPU time (s) 0.7
Current children cumulated vsize (KiB) 972

[startup+1.50283 s]
/proc/loadavg: 0.85 0.97 1.06 2/66 24680
/proc/meminfo: memFree=1815448/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=1.5
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 160 0 0 0 150 0 0 0 25 0 1 0 105715725 995328 143 1992294400 134512640 135197378 4294956240 18446744073709551615 134618596 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 143 91 167 0 74 0
Current children cumulated CPU time (s) 1.5
Current children cumulated vsize (KiB) 972

[startup+3.10199 s]
/proc/loadavg: 0.85 0.97 1.06 2/66 24680
/proc/meminfo: memFree=1815256/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=3.09
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 164 0 0 0 309 0 0 0 25 0 1 0 105715725 995328 147 1992294400 134512640 135197378 4294956240 18446744073709551615 134552514 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 147 91 167 0 74 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 972

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

[startup+3.90106 s]
/proc/loadavg: 0.86 0.97 1.06 2/66 24680
/proc/meminfo: memFree=1815256/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=3.89
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 166 0 0 0 389 0 0 0 25 0 1 0 105715725 995328 149 1992294400 134512640 135197378 4294956240 18446744073709551615 134548521 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 149 91 167 0 74 0
Current children cumulated CPU time (s) 3.89
Current children cumulated vsize (KiB) 972

[startup+4.10109 s]
/proc/loadavg: 0.86 0.97 1.06 2/66 24680
/proc/meminfo: memFree=1815256/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=4.09
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 166 0 0 0 409 0 0 0 25 0 1 0 105715725 995328 149 1992294400 134512640 135197378 4294956240 18446744073709551615 134548521 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 149 91 167 0 74 0
Current children cumulated CPU time (s) 4.09
Current children cumulated vsize (KiB) 972

[startup+4.2011 s]
/proc/loadavg: 0.86 0.97 1.06 2/66 24680
/proc/meminfo: memFree=1815256/2055920 swapFree=4191356/4192956
[pid=24679] ppid=24677 vsize=972 CPUtime=4.19
/proc/24679/stat : 24679 (march_hi) R 24677 24679 24642 0 -1 4194304 166 0 0 0 419 0 0 0 25 0 1 0 105715725 995328 149 1992294400 134512640 135197378 4294956240 18446744073709551615 134541122 0 0 4096 0 0 0 0 17 1 0 0
/proc/24679/statm: 243 149 91 167 0 74 0
Current children cumulated CPU time (s) 4.19
Current children cumulated vsize (KiB) 972

Child status: 20
Real time (s): 4.28732
CPU time (s): 4.28235
CPU user time (s): 4.27835
CPU system time (s): 0.003999
CPU usage (%): 99.8841
Max. virtual memory (cumulated for all children) (KiB): 972

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 4.27835
system time used= 0.003999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 168
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= 2
involuntary context switches= 245

runsolver used 0.011998 second user time and 0.018997 second system time

The end

Launcher Data 

Begin job on node56 at 2009-04-26 22:14:40
IDJOB=1732012
IDBENCH=71108
IDSOLVER=521
FILE ID=node56/1732012-1240776880
PBS_JOBID= 9187254
Free space on /tmp= 103060 MiB

SOLVER NAME= march_hi hi
BENCH NAME= SAT09/CRAFTED/sgen/unsat/sgen1-unsat-61-100.cnf
COMMAND LINE= HOME/march_hi BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1732012-1240776880/watcher-1732012-1240776880 -o /tmp/evaluation-result-1732012-1240776880/solver-1732012-1240776880 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/march_hi HOME/instance-1732012-1240776880.cnf

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 43b8e7efe061e21db6b4c047915ae87c
RANDOM SEED=2127983852

node56.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.218
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		: 3000.218
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:       1816064 kB
Buffers:         22424 kB
Cached:         145904 kB
SwapCached:        924 kB
Active:          44372 kB
Inactive:       137776 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1816064 kB
SwapTotal:     4192956 kB
SwapFree:      4191356 kB
Dirty:             892 kB
Writeback:           0 kB
Mapped:          22456 kB
Slab:            43608 kB
Committed_AS:   368504 kB
PageTables:       1468 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= 103060 MiB
End job on node56 at 2009-04-26 22:14:44