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).
  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

Namenormalized-opb/mps-v2-20-10/MIPLIB/miplib2003/normalized-mps-v2-20-10-timtab1.opb
MD5SUM80f96076c552994a45628c61744afcd8
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 1925
Biggest coefficient in the objective function 3604480000000000
Number of bits for the biggest coefficient in the objective function 52
Sum of the numbers in the objective function 349617145499934465
Number of bits of the sum of numbers in the objective function 59
Biggest number in a constraint 1200000000000000000000
Number of bits of the biggest number in a constraint 71
Biggest sum of numbers in a constraint 4359960937500000124928
Number of bits of the biggest sum of numbers72
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.425934
Number of variables3763
Total number of constraints555
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints491
Minimum length of a constraint1
Maximum length of a constraint138

Trace number 42486 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-16 09:02:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25707 boxname=wulflinc6 idbench=1007 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  80f96076c552994a45628c61744afcd8  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-timtab1.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-timtab1.opb
IDLAUNCH: 25707
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        701536 kB
Buffers:         33544 kB
Cached:         276936 kB
SwapCached:       1028 kB
Active:          42408 kB
Inactive:       270236 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        701284 kB
SwapTotal:     2097136 kB
SwapFree:      2095200 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5092 kB
Slab:            14708 kB
Committed_AS:    63840 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 09:03:02 (client local time) WITH STATUS 20 IN 21.3678 SECONDS
stats: 25707 7 21.3678 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...

c Decision: 1460/128041	Time: 10.4434/86400
c Decision: 1460/128041	Time: 13.256/86400
s UNSATISFIABLE
#### 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.91 0.95 0.90 2/54 17118
Raw data (stat): 17118 (runsolver) R 17117 25568 25567 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 969528984 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0005 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 17118
Raw data (stat): 17118 (pb2sat-v2) R 17117 25568 25567 0 -1 0 15319 0 0 0 966 33 0 0 25 0 1 0 969528984 44122112 9595 4294967295 134512640 135730672 3221224576 3221223072 134747543 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 10772 9595 301 301 0 10471 0
vsize: 43088
[startup+20.0012 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 17118
Raw data (stat): 17118 (pb2sat-v2) R 17117 25568 25567 0 -1 0 16052 0 0 0 1964 35 0 0 25 0 1 0 969528984 44867584 9826 4294967295 134512640 135730672 3221224576 3221223232 134734759 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 10954 9826 301 301 0 10653 0
vsize: 43816
[startup+21.3687 s]
Raw data (loadavg): 0.94 0.96 0.91 1/53 17118
Raw data (stat): 17118 (pb2sat-v2) R 17117 25568 25567 0 -1 0 16052 0 0 0 1964 35 0 0 25 0 1 0 969528984 44867584 9826 4294967295 134512640 135730672 3221224576 3221223232 134734759 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 10954 9826 301 301 0 10653 0
vsize: 0

Child status: 20
Real time (s): 21.3684
CPU time (s): 21.3678
CPU user time (s): 20.9898
CPU system time (s): 0.377942
CPU usage (%): 99.9971
Max. virtual memory (Kb): 43816
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####