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:
  1. 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.
  2. 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 !
  3. 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.
  4. 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

Namemps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-misc01.opb
MD5SUMa96963da6c162c27e4853a5140494bde
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 1074317824
Optimality of the best value was proved YES
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824
Number of bits of the biggest number in a constraint 31
Biggest sum of numbers in a constraint 3223595007
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark2.37864
Number of variables113
Total number of constraints136
Number of constraints which are clauses15
Number of constraints which are cardinality constraints (but not clauses)88
Number of constraints which are nor clauses,nor cardinality constraints33
Minimum length of a constraint1
Maximum length of a constraint101

Trace number 9999

Launcher Data

LAUNCH ON wulflinc2 THE 2005-09-23 16:25:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8756 boxname=wulflinc2 idbench=552 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  a96963da6c162c27e4853a5140494bde  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-misc01.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-misc01.opb
IDLAUNCH: 8756
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.261
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		: 451.261
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:        899428 kB
Buffers:         16612 kB
Cached:          99056 kB
SwapCached:          0 kB
Active:          45228 kB
Inactive:        73332 kB
HighTotal:      131008 kB
HighFree:        35784 kB
LowTotal:       903652 kB
LowFree:        863644 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10984 kB
Committed_AS:    63644 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:28:47 (client local time) WITH STATUS 30 IN 172.478 SECONDS
stats: 8756 0 172.478 30

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 1074469888
c small objective detected
c CONFLICT during preprocess 
c [startup+5.99498 s]  setting bit 30 to 0
c CONFLICT during preprocess 
c [startup+6.39183 s]  setting bit 29 to 0
c CONFLICT during preprocess 
c [startup+6.78371 s]  setting bit 28 to 0
c CONFLICT during preprocess 
c [startup+7.17862 s]  setting bit 27 to 0
c CONFLICT during preprocess 
c [startup+7.57275 s]  setting bit 26 to 0
c CONFLICT during preprocess 
c [startup+7.96725 s]  setting bit 25 to 0
c CONFLICT during preprocess 
c [startup+8.36203 s]  setting bit 24 to 0
c CONFLICT during preprocess 
c [startup+8.75598 s]  setting bit 23 to 0
c CONFLICT during preprocess 
c [startup+9.14844 s]  setting bit 22 to 0
c CONFLICT during preprocess 
c [startup+9.54342 s]  setting bit 21 to 0
c CONFLICT during preprocess 
c [startup+9.9472 s]  setting bit 20 to 0
c [startup+16.1518 s]  setting bit 19 to 0
c [startup+55.3081 s]  setting bit 18 to 0
c got solution with objective value: 1074329088
c [startup+61.1683 s]  setting bit 17 to 1
c [startup+98.1922 s]  setting bit 16 to 0
c [startup+130.203 s]  setting bit 15 to 0
c got solution with objective value: 1074317824
c [startup+137.343 s]  setting bit 14 to 1
c [startup+155.663 s]  setting bit 13 to 0
c got solution with objective value: 1074317824
c [startup+156.374 s]  setting bit 12 to 1
c [startup+162.263 s]  setting bit 11 to 0
c [startup+164.692 s]  setting bit 10 to 0
c [startup+166.292 s]  setting bit 9 to 0
c got solution with objective value: 1074317824
c [startup+167.009 s]  setting bit 8 to 1
c got solution with objective value: 1074317824
c [startup+167.695 s]  setting bit 7 to 1
c got solution with objective value: 1074317824
c [startup+168.381 s]  setting bit 6 to 1
c got solution with objective value: 1074317824
c [startup+169.066 s]  setting bit 5 to 1
c got solution with objective value: 1074317824
c [startup+169.751 s]  setting bit 4 to 1
c got solution with objective value: 1074317824
c [startup+170.436 s]  setting bit 3 to 1
c got solution with objective value: 1074317824
c [startup+171.121 s]  setting bit 2 to 1
c got solution with objective value: 1074317824
c [startup+171.807 s]  setting bit 1 to 1
c got solution with objective value: 1074317824
c [startup+172.495 s]  setting bit 0 to 1
s OPTIMUM FOUND
v -COL001_bit0 -COL002_bit0 -COL003_bit0 -COL004_bit0 -COL005_bit0 -COL006_bit0 -COL007_bit0 -COL008_bit0 COL009_bit0 -COL010_bit0 -COL011_bit0 -COL012_bit0 COL013_bit0 -COL014_bit0 -COL015_bit0 -COL016_bit0 -COL017_bit0 -COL018_bit0 -COL019_bit0 -COL020_bit0 -COL021_bit0 -COL022_bit0 -COL023_bit0 -COL024_bit0 -COL025_bit0 -COL026_bit0 -COL027_bit0 -COL028_bit0 -COL029_bit0 -COL030_bit0 -COL031_bit0 COL032_bit0 -COL033_bit0 -COL034_bit0 -COL035_bit0 -COL036_bit0 -COL037_bit0 -COL038_bit0 -COL039_bit0 -COL040_bit0 -COL041_bit0 -COL042_bit0 -COL043_bit0 -COL044_bit0 -COL045_bit0 -COL046_bit0 -COL047_bit0 COL048_bit0 -COL049_bit0 -COL050_bit0 COL051_bit0 -COL052_bit0 -COL053_bit0 -COL054_bit0 -COL055_bit0 -COL056_bit0 -COL057_bit0 -COL058_bit0 -COL059_bit0 -COL060_bit0 -COL061_bit0 -COL062_bit0 -COL063_bit0 -COL064_bit0 -COL065_bit0 COL066_bit0 -COL067_bit0 -COL068_bit0 -COL069_bit0 -COL070_bit0 -COL071_bit0 -COL072_bit0 COL073_bit0 COL074_bit0 COL075_bit0 -COL076_bit0 COL077_bit0 -COL078_bit0 -COL079_bit0 COL080_bit0 -COL081_bit0 COL082_bit0 -COL083_bit0 COL083_bit1 -COL083_bit10 -COL083_bit11 -COL083_bit12 -COL083_bit13 -COL083_bit14 -COL083_bit15 -COL083_bit16 -COL083_bit17 -COL083_bit18 -COL083_bit19 -COL083_bit2 COL083_bit20 -COL083_bit3 COL083_bit4 COL083_bit5 -COL083_bit6 -COL083_bit7 -COL083_bit8 COL083_bit9 COL083_bit_1 -COL083_bit_10 -COL083_bit_2 -COL083_bit_3 -COL083_bit_4 -COL083_bit_5 -COL083_bit_6 -COL083_bit_7 -COL083_bit_8 -COL083_bit_9

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21633567 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 373 2 364 364 0 9 0
[pid=9049] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-misc01.opb

[startup+10.0016 s]
Raw data (loadavg): 0.93 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 17996 0 0 0 955 41 0 0 25 0 1 0 21633567 49127424 9746 4294967295 134512640 135987407 3221224560 3221223008 134827644 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 11994 9746 364 364 0 11630 0
[pid=9049] vsize: 47976
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 47976

[startup+20.0023 s]
Raw data (loadavg): 0.94 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 18948 0 0 0 1951 44 0 0 25 0 1 0 21633567 50839552 10034 4294967295 134512640 135987407 3221224560 3221223232 134824259 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12412 10034 364 364 0 12048 0
[pid=9049] vsize: 49648
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 49648

[startup+30.003 s]
Raw data (loadavg): 0.95 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19031 0 0 0 2949 45 0 0 25 0 1 0 21633567 51101696 10052 4294967295 134512640 135987407 3221224560 3221223232 134824259 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12476 10052 364 364 0 12112 0
[pid=9049] vsize: 49904
Current children cumulated CPU time (s) 29.94
Current children cumulated vsize (Kb) 49904

[startup+40.0027 s]
Raw data (loadavg): 0.96 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19039 0 0 0 3947 46 0 0 25 0 1 0 21633567 51101696 10060 4294967295 134512640 135987407 3221224560 3221223232 134824259 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12476 10060 364 364 0 12112 0
[pid=9049] vsize: 49904
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 49904

[startup+50.0034 s]
Raw data (loadavg): 0.96 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19046 0 0 0 4946 46 0 0 25 0 1 0 21633567 51101696 10067 4294967295 134512640 135987407 3221224560 3221222976 134788496 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12476 10067 364 364 0 12112 0
[pid=9049] vsize: 49904
Current children cumulated CPU time (s) 49.92
Current children cumulated vsize (Kb) 49904

[startup+60.0041 s]
Raw data (loadavg): 0.97 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19394 0 0 0 5943 47 0 0 25 0 1 0 21633567 51494912 10110 4294967295 134512640 135987407 3221224560 3221223104 134811775 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12572 10110 364 364 0 12208 0
[pid=9049] vsize: 50288
Current children cumulated CPU time (s) 59.9
Current children cumulated vsize (Kb) 50288

[startup+70.0048 s]
Raw data (loadavg): 0.97 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19614 0 0 0 6941 49 0 0 25 0 1 0 21633567 51494912 10123 4294967295 134512640 135987407 3221224560 3221222992 135486786 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12572 10123 364 364 0 12208 0
[pid=9049] vsize: 50288
Current children cumulated CPU time (s) 69.9
Current children cumulated vsize (Kb) 50288

[startup+80.0056 s]
Raw data (loadavg): 0.98 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19627 0 0 0 7939 50 0 0 25 0 1 0 21633567 51494912 10136 4294967295 134512640 135987407 3221224560 3221223104 134812053 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12572 10136 364 364 0 12208 0
[pid=9049] vsize: 50288
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 50288

[startup+90.0053 s]
Raw data (loadavg): 0.98 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19645 0 0 0 8937 51 0 0 25 0 1 0 21633567 51494912 10154 4294967295 134512640 135987407 3221224560 3221223104 134812053 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12572 10154 364 364 0 12208 0
[pid=9049] vsize: 50288
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 50288

[startup+100.006 s]
Raw data (loadavg): 0.98 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19940 0 0 0 9934 52 0 0 25 0 1 0 21633567 51757056 10177 4294967295 134512640 135987407 3221224560 3221223104 134811770 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10177 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 99.86
Current children cumulated vsize (Kb) 50544

[startup+110.007 s]
Raw data (loadavg): 0.98 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19967 0 0 0 10932 53 0 0 25 0 1 0 21633567 51757056 10204 4294967295 134512640 135987407 3221224560 3221223104 134812053 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10204 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 109.85
Current children cumulated vsize (Kb) 50544

[startup+120.007 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19982 0 0 0 11931 54 0 0 25 0 1 0 21633567 51757056 10219 4294967295 134512640 135987407 3221224560 3221223104 134811775 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10219 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 119.85
Current children cumulated vsize (Kb) 50544

[startup+130.008 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 19996 0 0 0 12929 54 0 0 25 0 1 0 21633567 51757056 10233 4294967295 134512640 135987407 3221224560 3221223104 134812028 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10233 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 129.83
Current children cumulated vsize (Kb) 50544

[startup+140.009 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 20438 0 0 0 13927 55 0 0 25 0 1 0 21633567 51757056 10261 4294967295 134512640 135987407 3221224560 3221223104 134812053 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10261 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 139.82
Current children cumulated vsize (Kb) 50544

[startup+150.009 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 20461 0 0 0 14926 56 0 0 25 0 1 0 21633567 51757056 10284 4294967295 134512640 135987407 3221224560 3221223104 134811912 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9049/statm): 12636 10284 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 149.82
Current children cumulated vsize (Kb) 50544

[startup+160.01 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 20895 0 0 0 15923 57 0 0 25 0 1 0 21633567 51757056 10304 4294967295 134512640 135987407 3221224560 3221223104 134811729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9049/statm): 12636 10304 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 159.8
Current children cumulated vsize (Kb) 50544

[startup+170.01 s]
Raw data (loadavg): 0.99 0.97 0.99 2/55 9049
Raw data (/proc/9049/stat): 9049 (pb2sat) R 9048 9049 4070 0 -1 0 22563 0 0 0 16919 60 0 0 25 0 1 0 21633567 51757056 10316 4294967295 134512640 135987407 3221224560 3221223264 134818300 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9049/statm): 12636 10316 364 364 0 12272 0
[pid=9049] vsize: 50544
Current children cumulated CPU time (s) 169.79
Current children cumulated vsize (Kb) 50544
One traced child (pid=9049) exited with status: 30
All traced children have exited ! Game is over.

Child status: 30
Real time (s): 172.685
CPU time (s): 172.478
CPU user time (s): 171.833
CPU system time (s): 0.644901
CPU usage (%): 99.8799
Max. virtual memory (cumulated for all children) (Kb): 50544

Verifier Data

Verifier:	OK	1074317824