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/miplib3/normalized-mps-v2-20-10-qnet1_o.opb
MD5SUMbf1b0bf5e7a010c339b0158758f6f277
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 3720
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 133143986052
Number of bits of the sum of numbers in the objective function 37
Biggest number in a constraint 8388608000000
Number of bits of the biggest number in a constraint 43
Biggest sum of numbers in a constraint 17124187591735
Number of bits of the biggest sum of numbers44
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.55976
Number of variables5380
Total number of constraints585
Number of constraints which are clauses32
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints505
Minimum length of a constraint2
Maximum length of a constraint54

Trace number 10104

Launcher Data

LAUNCH ON wulflinc4 THE 2005-09-23 17:00:50 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8864 boxname=wulflinc4 idbench=660 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  bf1b0bf5e7a010c339b0158758f6f277  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-qnet1_o.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-qnet1_o.opb
IDLAUNCH: 8864
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        932280 kB
Buffers:         12436 kB
Cached:          72564 kB
SwapCached:          0 kB
Active:          44624 kB
Inactive:        43292 kB
HighTotal:      131008 kB
HighFree:        54068 kB
LowTotal:       903652 kB
LowFree:        878212 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8796 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:01:32 (client local time) WITH STATUS 20 IN 41.4557 SECONDS
stats: 8864 7 41.4557 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
s UNSATISFIABLE

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/9352/stat): 9352 (pb2sat) R 9351 9352 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21840548 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/9352/statm): 373 2 364 364 0 9 0
[pid=9352] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-qnet1_o.opb

[startup+10.0022 s]
Raw data (loadavg): 0.94 0.99 0.98 1/57 9354
Raw data (/proc/9352/stat): 9352 (pb2sat) T 9351 9352 4060 0 -1 0 26655 0 0 0 929 67 0 0 25 0 1 0 21840548 81911808 15079 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9352/statm): 19998 15079 364 364 0 19634 0
[pid=9352] vsize: 79992
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 79992

[startup+20.0021 s]
Raw data (loadavg): 0.95 0.99 0.98 1/55 9356
Raw data (/proc/9352/stat): 9352 (pb2sat) T 9351 9352 4060 0 -1 0 27361 0 0 0 1888 84 0 0 25 0 1 0 21840548 84905984 15785 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9352/statm): 20729 15785 364 364 0 20365 0
[pid=9352] vsize: 82916
Current children cumulated CPU time (s) 19.72
Current children cumulated vsize (Kb) 82916

[startup+30.0029 s]
Raw data (loadavg): 0.95 0.99 0.98 2/55 9358
Raw data (/proc/9352/stat): 9352 (pb2sat) R 9351 9352 4060 0 -1 0 27770 0 0 0 2856 94 0 0 25 0 1 0 21840548 86536192 16194 4294967295 134512640 135987407 3221224560 3221223120 134788454 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9352/statm): 21127 16194 364 364 0 20763 0
[pid=9352] vsize: 84508
Current children cumulated CPU time (s) 29.5
Current children cumulated vsize (Kb) 84508

[startup+40.0028 s]
Raw data (loadavg): 0.96 0.99 0.98 1/55 9358
Raw data (/proc/9352/stat): 9352 (pb2sat) T 9351 9352 4060 0 -1 0 28017 0 0 0 3807 110 0 0 25 0 1 0 21840548 87851008 16441 4294967295 134512640 135987407 3221224560 3221223388 135541329 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9352/statm): 21448 16441 364 364 0 21084 0
[pid=9352] vsize: 85792
Current children cumulated CPU time (s) 39.17
Current children cumulated vsize (Kb) 85792
One traced child (pid=9352) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 42.3459
CPU time (s): 41.4557
CPU user time (s): 40.2779
CPU system time (s): 1.17782
CPU usage (%): 97.8978
Max. virtual memory (cumulated for all children) (Kb): 85792

Verifier Data

ERROR: no interpretation found !