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-p0040.opb
MD5SUM1c249519911563f3292efb34f4875b44
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 62027
Optimality of the best value was proved NO
Number of terms in the objective function 40
Biggest coefficient in the objective function 8161
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 265332
Number of bits of the sum of numbers in the objective function 19
Biggest number in a constraint 8161
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 265332
Number of bits of the biggest sum of numbers19
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.276957
Number of variables40
Total number of constraints63
Number of constraints which are clauses10
Number of constraints which are cardinality constraints (but not clauses)50
Number of constraints which are nor clauses,nor cardinality constraints3
Minimum length of a constraint1
Maximum length of a constraint10

Trace number 34100 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc30 THE 2005-05-27 19:43:38 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12111 boxname=wulflinc30 idbench=932 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  1c249519911563f3292efb34f4875b44  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-p0040.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-p0040.opb 0
IDLAUNCH: 12111
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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	: 3
cpu MHz		: 451.072
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:        594076 kB
Buffers:         27976 kB
Cached:         389504 kB
SwapCached:        720 kB
Active:          37140 kB
Inactive:       383648 kB
HighTotal:      131008 kB
HighFree:        19740 kB
LowTotal:       903652 kB
LowFree:        574336 kB
SwapTotal:     2097892 kB
SwapFree:      2096304 kB
Dirty:              64 kB
Writeback:           0 kB
Mapped:           5040 kB
Slab:            13976 kB
Committed_AS:    63588 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-27 19:45:15 (client local time) WITH STATUS 30 IN 94.8896 SECONDS
stats: 12111 0 94.8896 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 0  (#equs: 0)
Nr of vars set: 0  (#equs: 0)
#decisions: 20;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 24, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant:  201236 (64095:>=*);
#decisions: 20;  #end-nodes: 3;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 3 / 80 (80)
#axs: 24, #non-axs: 3
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  201690 (63641:>=*);
#decisions: 19;  #end-nodes: 1;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 1 / 80 (80)
#axs: 24, #non-axs: 4
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  201761 (63570:>=*);
#decisions: 19;  #end-nodes: 2;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 2 / 80 (80)
#axs: 24, #non-axs: 6
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  202215 (63116:>=*);
#decisions: 35;  #end-nodes: 10;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 10 / 80 (80)
#axs: 24, #non-axs: 16
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  202222 (63109:>=*);
#decisions: 19;  #end-nodes: 3;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 3 / 80 (80)
#axs: 24, #non-axs: 19
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  202676 (62655:>=*);
#decisions: 27;  #end-nodes: 6;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 6 / 80 (80)
#axs: 24, #non-axs: 25
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  202730 (62601:>=*);
#decisions: 19;  #end-nodes: 4;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 4 / 80 (80)
#axs: 24, #non-axs: 29
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  203255 (62076:>=*);
#decisions: 138210;  #end-nodes: 79780;
#proof improvement attempts: 0;  #restarts: 540
Current batch, end-nodes: 176 / 215 (215)
#axs: 24, #non-axs: 33
tight: meta-meta: start: 6, end: 9;  meta: start: 6, end (keep): 7
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  203301 (62030:>=*);
#decisions: 47397;  #end-nodes: 27926;
#proof improvement attempts: 0;  #restarts: 251
Current batch, end-nodes: 15 / 142 (142)
#axs: 24, #non-axs: 25
tight: meta-meta: start: 6, end: 9;  meta: start: 6, end (keep): 7
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:  203304 (62027:>=*);
#decisions: 2814394;  #end-nodes: 1869304;
#proof improvement attempts: 0;  #restarts: 3270
Current batch, end-nodes: 19023 / 24314 (897)
#axs: 24, #non-axs: 35
tight: meta-meta: start: 5, end: 7;  meta: start: 6, end (keep): 7
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
Model found with constant:
  (pushed:) 203304 (62027:>=*)

With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 40  (#equs: 0)
Time taken in seconds: 94
times:
0m0.018s 0m0.007s
1m26.955s 0m7.804s
v -C1001_bit0  C1002_bit0 -C1003_bit0 -C1004_bit0 -C1005_bit0  C1006_bit0 -C1007_bit0 -C1008_bit0  C1009_bit0 -C1010_bit0 -C1011_bit0 -C1012_bit0 -C1013_bit0 -C1014_bit0  C1015_bit0 -C1016_bit0 -C1017_bit0  C1018_bit0 -C1019_bit0 -C1020_bit0 -C1021_bit0  C1022_bit0 -C1023_bit0 -C1024_bit0 -C1025_bit0  C1026_bit0 -C1027_bit0 -C1028_bit0  C1029_bit0 -C1030_bit0 -C1031_bit0 -C1032_bit0 -C1033_bit0  C1034_bit0 -C1035_bit0 -C1036_bit0 -C1037_bit0  C1038_bit0 -C1039_bit0 -C1040_bit0 
s OPTIMUM FOUND
#### 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
Raw data (loadavg): 0.82 0.95 0.97 2/54 26661
Raw data (stat): 26661 (runsolver) R 26660 22056 22055 0 -1 64 6 0 0 0 0 0 0 0 19 0 1 0 858769347 884736 93 4294967295 134512640 135332820 3221224448 3221219344 134917321 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 864
Current StackSize limit: 67108864 bytes
[startup+10.0001 s]
Raw data (loadavg): 0.85 0.95 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+20.0025 s]
Raw data (loadavg): 0.87 0.95 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+30.0037 s]
Raw data (loadavg): 0.89 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+40.0032 s]
Raw data (loadavg): 0.91 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+50.0043 s]
Raw data (loadavg): 0.92 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+60.0051 s]
Raw data (loadavg): 0.93 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+70.0055 s]
Raw data (loadavg): 0.94 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+80.0118 s]
Raw data (loadavg): 0.95 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+90.0121 s]
Raw data (loadavg): 0.96 0.96 0.97 2/55 26664
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+96.7306 s]
Raw data (loadavg): 0.96 0.96 0.97 1/53 26674
Raw data (stat): 26661 (vallstSAT2005PB) S 26660 22056 22055 0 -1 0 321 231 0 0 1 0 0 0 20 0 1 0 858769347 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 0

Child status: 30
Real time (s): 96.7304
CPU time (s): 94.8896
CPU user time (s): 87.0098
CPU system time (s): 7.8798
CPU usage (%): 98.0969
Max. virtual memory (Kb): 2128
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	62027
#### END VERIFIER DATA ####