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/miplib/normalized-mps-v2-20-10-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved NO
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02184
Number of variables48
Total number of constraints73
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 constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 35170 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc23 THE 2005-05-28 12:20:52 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24467 boxname=wulflinc23 idbench=939 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-pipex.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-pipex.opb
IDLAUNCH: 24467
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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:        826144 kB
Buffers:         32640 kB
Cached:         155768 kB
SwapCached:        700 kB
Active:          47296 kB
Inactive:       143172 kB
HighTotal:      131008 kB
HighFree:        12236 kB
LowTotal:       903652 kB
LowFree:        813908 kB
SwapTotal:     2097136 kB
SwapFree:      2095556 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5028 kB
Slab:            12404 kB
Committed_AS:    63592 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 12:22:47 (client local time) WITH STATUS 1 IN 114.918 SECONDS
stats: 24467 7 114.918 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### 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 8577
Raw data (stat): 8577 (runsolver) R 8576 5562 5561 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 864760944 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 29926 0 0 0 939 60 0 0 25 0 1 0 864760944 90849280 18755 4294967295 134512640 135726644 3221224576 3221202128 134554559 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 22180 18755 300 300 0 21880 0
vsize: 88720
[startup+20.0078 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 58214 0 0 0 1881 119 0 0 25 0 1 0 864760944 178020352 35818 4294967295 134512640 135726644 3221224576 3221204016 134766421 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 43462 35818 300 300 0 43162 0
vsize: 173848
[startup+30.0118 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 96078 0 0 0 2807 193 0 0 25 0 1 0 864760944 294359040 51454 4294967295 134512640 135726644 3221224576 3221205352 134784091 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 71865 51454 300 300 0 71565 0
vsize: 287460
[startup+40.013 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 113146 0 0 0 3775 226 0 0 25 0 1 0 864760944 348917760 68297 4294967295 134512640 135726644 3221224576 3221202152 134784091 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 85185 68297 300 300 0 84885 0
vsize: 340740
[startup+50.0134 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 155404 0 0 0 4700 301 0 0 25 0 1 0 864760944 553992192 109398 4294967295 134512640 135726644 3221224576 3221204960 134771705 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 135252 109401 300 300 0 134952 0
vsize: 541008
[startup+60.0127 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 186999 0 0 0 5635 366 0 0 25 0 1 0 864760944 689844224 122167 4294967295 134512640 135726644 3221224576 3221202592 134784885 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 168419 122171 300 300 0 168119 0
vsize: 673676
[startup+70.0133 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 200193 0 0 0 6606 396 0 0 25 0 1 0 864760944 622731264 110598 4294967295 134512640 135726644 3221224576 3221202396 135298008 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 152034 110600 300 300 0 151734 0
vsize: 608136
[startup+80.0133 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 218595 0 0 0 7571 430 0 0 25 0 1 0 864760944 648966144 128781 4294967295 134512640 135726644 3221224576 3221202152 135282351 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 158439 128781 300 300 0 158139 0
vsize: 633756
[startup+90.0136 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 237661 0 0 0 8536 466 0 0 25 0 1 0 864760944 678182912 147628 4294967295 134512640 135726644 3221224576 3221202092 134604449 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 165572 147629 300 300 0 165272 0
vsize: 662288
[startup+100.014 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 253517 0 0 0 9507 495 0 0 25 0 1 0 864760944 752615424 163298 4294967295 134512640 135726644 3221224576 3221204400 134780450 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 183744 163298 300 300 0 183444 0
vsize: 734976
[startup+110.015 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 259610 0 0 0 10479 522 0 0 25 0 1 0 864760944 401997824 97383 4294967295 134512640 135726644 3221224576 3221222764 135277589 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 98144 97383 300 300 0 97844 0
vsize: 392576
[startup+114.92 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 8577
Raw data (stat): 8577 (pb2sat) R 8576 5562 5561 0 -1 0 259610 0 0 0 10479 522 0 0 25 0 1 0 864760944 401997824 97383 4294967295 134512640 135726644 3221224576 3221222764 135277589 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 98144 97383 300 300 0 97844 0
vsize: 0

Child status: 1
Real time (s): 114.92
CPU time (s): 114.918
CPU user time (s): 109.483
CPU system time (s): 5.43417
CPU usage (%): 99.9981
Max. virtual memory (Kb): 734976
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####