PB'05 competition: run trace

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 in four parts:

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 provide some useful information on the computer.
SOLVER DATA
This is the output of the solver (stdout and stderr).
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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
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.
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.

General information on the benchmark

Name	normalized-opb/mps-v2-20-10/MIPLIB/miplib3/normalized-mps-v2-20-10-stein27.opb
MD5SUM	5cfd2609faa97ca60458112609ce37ee
Bench Category	optimization, small integers (OPTSMALLINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	18
Optimality of the best value was proved	NO
Number of terms in the objective function	27
Biggest coefficient in the objective function	1
Number of bits for the biggest coefficient in the objective function	1
Sum of the numbers in the objective function	27
Number of bits of the sum of numbers in the objective function	5
Biggest number in a constraint	13
Number of bits of the biggest number in a constraint	4
Biggest sum of numbers in a constraint	40
Number of bits of the biggest sum of numbers	6
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	1.02284
Number of variables	27
Total number of constraints	145
Number of constraints which are clauses	117
Number of constraints which are cardinality constraints (but not clauses)	28
Number of constraints which are nor clauses,nor cardinality constraints	0
Minimum length of a constraint	1
Maximum length of a constraint	27

Trace number 13719

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-04-20 21:47:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13908 boxname=wulflinc1 idbench=1070 idsolver=11 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5cfd2609faa97ca60458112609ce37ee  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-stein27.opb
REAL COMMAND:  minisat+ -S /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-stein27.opb /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-20-10-stein27.opb
IDLAUNCH: 13908
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        814276 kB
Buffers:         19624 kB
Cached:         173700 kB
SwapCached:          0 kB
Active:          84380 kB
Inactive:       112064 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        814024 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              48 kB
Writeback:           0 kB
Mapped:           7220 kB
Slab:            18132 kB
Committed_AS:    92816 kB
PageTables:        344 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-20 21:47:40 (client local time) WITH STATUS 30 IN 2.08268 SECONDS
stats: 13908 0 2.08268 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
c Converting 118 PB-constraints to clauses...
c   -- Unit propagations: (none)
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): .....................................................................................................................
c ---[   0]---> Sorter-cost:  312     Base:
c =================================[SATELITE+]==================================
c |           |     ORIGINAL     |              LEARNT              |          |
c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
c ==============================================================================
c |         0 |     434     1098 |     130       0        0     nan |  0.000 % |
c   -- subsuming                       
c   -- var.elim.:  201/201          
c   -- var.elim.:  117/117          
c   -- subsuming                       
c   -- var.elim.:  65/65          
c   -- var.elim.:  54/54          
c   -- var.elim.:  41/41          
c   -- var.elim.:  42/42          
c |         0 |     301     1034 |      --       0       --      -- |     --   | -129/-52
c |         0 |     301     1034 |     120       0        0     nan |  0.000 % |
c ==============================================================================
c (current CPU-time: 0.031995 s)
c ==============================================================================
c [1mFound solution: 21[0m
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): (none)
c ---[   0]---> Sorter-cost:  146     Base:
c =================================[SATELITE+]==================================
c |           |     ORIGINAL     |              LEARNT              |          |
c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
c ==============================================================================
c |         0 |     594     1729 |     178       0        0     nan |  0.000 % |
c   -- subsuming                       
c   -- var.elim.:  221/221          
c   -- var.elim.:  131/131          
c   -- subsuming                       
c   -- var.elim.:  41/41          
c   -- var.elim.:  6/6          
c |         0 |     549     1732 |      --       0       --      -- |     --   | -42/12
c |         0 |     549     1732 |     219       0        0     nan |  0.000 % |
c ==============================================================================
c (current CPU-time: 0.058991 s)
c ==============================================================================
c [1mFound solution: 19[0m
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): (none)
c ---[   0]---> Sorter-cost:    0     Base:
c =================================[SATELITE+]==================================
c |           |     ORIGINAL     |              LEARNT              |          |
c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
c ==============================================================================
c |         6 |     620     1908 |     185       5       21     4.2 |  0.000 % |
c   -- subsuming                       
c   -- var.elim.:  111/111          
c   -- var.elim.:  56/56          
c |         6 |     565     1809 |      --       5       --      -- |     --   | -42/-12
c |         6 |     565     1809 |     226       5       21     4.2 |  0.000 % |
c ==============================================================================
c (current CPU-time: 0.072988 s)
c ==============================================================================
c [1mFound solution: 18[0m
c   -- Detecting intervals from adjacent constraints: (none)
c   -- Clauses(.)/Splits(s): (none)
c ---[   0]---> Sorter-cost:    0     Base:
c =================================[SATELITE+]==================================
c |           |     ORIGINAL     |              LEARNT              |          |
c | Conflicts | Clauses Literals |   Limit Clauses Literals  Lit/Cl | Progress |
c ==============================================================================
c |        11 |     626     1972 |     187      10       74     7.4 |  0.000 % |
c   -- subsuming                       
c   -- var.elim.:  90/90          
c   -- var.elim.:  49/49          
c |        11 |     585     1916 |      --      10       --      -- |     --   | -41/-55
c |        11 |     585     1916 |     234      10       74     7.4 |  0.000 % |
c |       111 |     585     1916 |     257     110     1783    16.2 |  9.538 % |
c |       263 |     578     1890 |     279     260     4415    17.0 | 10.602 % |
c |       488 |     578     1890 |     307     252     3769    15.0 | 10.599 % |
c |       826 |     578     1890 |     338     344     4814    14.0 | 10.608 % |
c |      1332 |     578     1890 |     372     331     4132    12.5 | 10.619 % |
c |      2091 |     578     1890 |     409     371     4289    11.6 | 10.622 % |
c |      3230 |     578     1890 |     450     426     4921    11.6 | 10.655 % |
c |      4940 |     578     1890 |     495     442     5259    11.9 | 10.658 % |
c |      7502 |     570     1860 |     537     423     4456    10.5 | 11.677 % |
c |     11346 |     548     1788 |     568     495     5608    11.3 | 13.810 % |
c ==============================================================================
c [1mOptimal solution: 18[0m
s OPTIMUM FOUND
v V0001_bit0 -V0002_bit0 -V0003_bit0 V0004_bit0 -V0005_bit0 V0006_bit0 V0007_bit0 V0008_bit0 V0009_bit0 V0010_bit0 V0011_bit0 V0012_bit0 V0013_bit0 -V0014_bit0 -V0015_bit0 V0016_bit0 -V0017_bit0 V0018_bit0 V0019_bit0 V0020_bit0 -V0021_bit0 -V0022_bit0 V0023_bit0 -V0024_bit0 V0025_bit0 V0026_bit0 V0027_bit0
c _______________________________________________________________________________
c 
c restarts              : 14
c conflicts             : 15931          (7697 /sec)
c decisions             : 17993          (8694 /sec)
c propagations          : 702124         (339242 /sec)
c inspects              : 4213628        (2035879 /sec)
c CPU time              : 2.06969 s
c _______________________________________________________________________________
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 1.06 1.00 0.92 2/56 13917
Raw data (stat): 13917 (runsolver) R 13916 12452 12451 0 -1 64 4 0 0 0 0 0 0 0 20 0 1 0 424719090 1052672 99 4294967295 134512640 135381576 3221224448 3221219692 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+2.09017 s]
Raw data (loadavg): 1.06 1.00 0.92 1/55 13917
Raw data (stat): 13917 (runsolver) R 13916 12452 12451 0 -1 64 4 0 0 0 0 0 0 0 20 0 1 0 424719090 1052672 99 4294967295 134512640 135381576 3221224448 3221219692 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 30
Real time (s): 2.0899
CPU time (s): 2.08268
CPU user time (s): 2.06969
CPU system time (s): 0.012998
CPU usage (%): 99.6548
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	18
#### END VERIFIER DATA ####