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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-scagr7.opb
MD5SUM884137728bf7ef59c1c9822643306b6c
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 3990
Biggest coefficient in the objective function 35540854374400
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 1307201212607598
Number of bits of the sum of numbers in the objective function 51
Biggest number in a constraint 35540854374400
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 1307201212607598
Number of bits of the biggest sum of numbers51
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.181971
Number of variables4200
Total number of constraints129
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints129
Minimum length of a constraint30
Maximum length of a constraint300

Trace number 9908

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-23 16:09:13 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8662 boxname=wulflinc8 idbench=458 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  884137728bf7ef59c1c9822643306b6c  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-scagr7.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-scagr7.opb
IDLAUNCH: 8662
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.023
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		: 451.023
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:        935860 kB
Buffers:         12832 kB
Cached:          68904 kB
SwapCached:          0 kB
Active:          45444 kB
Inactive:        39180 kB
HighTotal:      131008 kB
HighFree:        58128 kB
LowTotal:       903652 kB
LowFree:        877732 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8652 kB
Committed_AS:    63628 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:10:54 (client local time) WITH STATUS 0 IN 98.776 SECONDS
stats: 8662 7 98.776 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21527906 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 373 2 364 364 0 9 0
[pid=8529] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-20-10-scagr7.opb

[startup+10.0019 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 29405 0 0 0 927 70 0 0 25 0 1 0 21527906 89366528 18258 4294967295 134512640 135987407 3221224560 3221144860 135499893 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 21818 18258 364 364 0 21454 0
[pid=8529] vsize: 87272
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 87272

[startup+20.0027 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 60993 0 0 0 1861 132 0 0 25 0 1 0 21527906 186003456 38622 4294967295 134512640 135987407 3221224560 3221170556 134637035 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 45411 38622 364 364 0 45047 0
[pid=8529] vsize: 181644
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 181644

[startup+30.0035 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 104594 0 0 0 2771 219 0 0 25 0 1 0 21527906 353054720 60016 4294967295 134512640 135987407 3221224560 3221198288 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 86195 60016 364 364 0 85831 0
[pid=8529] vsize: 344780
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 344780

[startup+40.0033 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 119649 0 0 0 3739 249 0 0 25 0 1 0 21527906 367517696 74864 4294967295 134512640 135987407 3221224560 3221139040 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 89726 74864 364 364 0 89362 0
[pid=8529] vsize: 358904
Current children cumulated CPU time (s) 39.88
Current children cumulated vsize (Kb) 358904

[startup+50.0041 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 152024 0 0 0 4672 314 0 0 25 0 1 0 21527906 545542144 106336 4294967295 134512640 135987407 3221224560 3221163724 135500012 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 133189 106336 364 364 0 132825 0
[pid=8529] vsize: 532756
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 532756

[startup+60.0038 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 197626 0 0 0 5570 414 0 0 25 0 1 0 21527906 598421504 108436 4294967295 134512640 135987407 3221224560 3221185920 134865141 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8529/statm): 146099 108436 364 364 0 145735 0
[pid=8529] vsize: 584396
Current children cumulated CPU time (s) 59.84
Current children cumulated vsize (Kb) 584396

[startup+70.0056 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 209916 0 0 0 6546 439 0 0 25 0 1 0 21527906 638464000 120534 4294967295 134512640 135987407 3221224560 3221219952 135477662 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8529/statm): 155875 120534 364 364 0 155511 0
[pid=8529] vsize: 623500
Current children cumulated CPU time (s) 69.85
Current children cumulated vsize (Kb) 623500

[startup+80.0064 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 223791 0 0 0 7514 470 0 0 25 0 1 0 21527906 639139840 134161 4294967295 134512640 135987407 3221224560 3221155104 134640034 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 156040 134161 364 364 0 155676 0
[pid=8529] vsize: 624160
Current children cumulated CPU time (s) 79.84
Current children cumulated vsize (Kb) 624160

[startup+90.0062 s]
Raw data (loadavg): 0.99 0.97 0.96 2/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) R 8528 8529 4060 0 -1 0 235109 0 0 0 8490 495 0 0 25 0 1 0 21527906 689606656 145275 4294967295 134512640 135987407 3221224560 3221153264 134877708 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 168361 145275 364 364 0 167997 0
[pid=8529] vsize: 673444
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 673444



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+98.6038 s]
Raw data (loadavg): 0.99 0.97 0.96 1/55 8529
Raw data (/proc/8529/stat): 8529 (pb2sat) T 8528 8529 4060 0 -1 0 248513 0 0 0 9321 523 0 0 25 0 1 0 21527906 981987328 158470 4294967295 134512640 135987407 3221224560 3221180032 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8529/statm): 239743 158470 364 364 0 239379 0
[pid=8529] vsize: 958972
Current children cumulated CPU time (s) 98.44
Current children cumulated vsize (Kb) 958972

Sending SIGTERM to -8529
Sleeping 2 seconds

[startup+100.007 s]
Raw data (loadavg): 0.99 0.97 0.96 1/56 8530
Raw data (/proc/8529/stat): 8529 (pb2sat) S 8528 8529 4060 0 -1 0 248514 0 0 0 9321 523 0 0 25 0 1 0 21527906 981987328 158471 4294967295 134512640 135987407 3221224560 3221178344 135549753 0 16384 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8529/statm): 239743 158471 364 364 0 239379 0
[pid=8529] vsize: 958972
Current children cumulated CPU time (s) 98.44
Current children cumulated vsize (Kb) 958972
Sending SIGKILL to -8529
One traced child (pid=8529) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 100.937
CPU time (s): 98.776
CPU user time (s): 93.2178
CPU system time (s): 5.55815
CPU usage (%): 97.8591
Max. virtual memory (cumulated for all children) (Kb): 958972

Verifier Data

ERROR: no interpretation found !