./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:55:55,862 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:55:55,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-11-19 07:55:56,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:55:56,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:55:56,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:55:56,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:55:56,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:55:56,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:55:56,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:55:56,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:55:56,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:55:56,069 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:55:56,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:55:56,072 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:55:56,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:55:56,073 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:55:56,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:55:56,074 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:55:56,074 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:55:56,075 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:55:56,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:55:56,076 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:55:56,076 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:55:56,077 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:55:56,077 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:55:56,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:55:56,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:55:56,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:55:56,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:55:56,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:55:56,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:55:56,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:55:56,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:55:56,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:55:56,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:55:56,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:55:56,084 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:55:56,084 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d
[2023-11-19 07:55:56,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:55:56,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:55:56,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:55:56,537 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:55:56,538 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:55:56,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c
[2023-11-19 07:55:59,621 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:55:59,893 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:55:59,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c
[2023-11-19 07:55:59,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/6bef32665/660c382aa10c4c9ea80697a6206e8017/FLAGecceb2a0e
[2023-11-19 07:55:59,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/6bef32665/660c382aa10c4c9ea80697a6206e8017
[2023-11-19 07:55:59,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:55:59,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:55:59,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:55:59,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:55:59,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:55:59,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:59" (1/1) ...
[2023-11-19 07:55:59,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3e0fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:59, skipping insertion in model container
[2023-11-19 07:55:59,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:59" (1/1) ...
[2023-11-19 07:56:00,002 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:56:00,259 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:00,272 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
[2023-11-19 07:56:00,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58f106c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:00, skipping insertion in model container
[2023-11-19 07:56:00,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:56:00,274 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner
[2023-11-19 07:56:00,276 INFO L158 Benchmark]: Toolchain (without parser) took 320.71ms. Allocated memory is still 169.9MB. Free memory was 142.0MB in the beginning and 135.4MB in the end (delta: 6.6MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB.
[2023-11-19 07:56:00,277 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:56:00,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.63ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 135.4MB in the end (delta: 6.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB.
[2023-11-19 07:56:00,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21ms. Allocated memory is still 130.0MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 315.63ms. Allocated memory is still 169.9MB. Free memory was 141.8MB in the beginning and 135.4MB in the end (delta: 6.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- UnsupportedSyntaxResult [Line: 114]: Unsupported Syntax
Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:56:02,827 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:56:02,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2023-11-19 07:56:02,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:56:02,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:56:03,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:56:03,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:56:03,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:56:03,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:56:03,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:56:03,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:56:03,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:56:03,018 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:56:03,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:56:03,020 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:56:03,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:56:03,021 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:56:03,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:56:03,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-11-19 07:56:03,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true
[2023-11-19 07:56:03,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-11-19 07:56:03,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:56:03,025 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:56:03,025 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-11-19 07:56:03,026 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-19 07:56:03,026 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:56:03,027 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:56:03,027 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:56:03,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:56:03,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:56:03,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:56:03,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:56:03,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:56:03,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:56:03,030 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF
[2023-11-19 07:56:03,031 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-11-19 07:56:03,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:56:03,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:56:03,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:56:03,032 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
[2023-11-19 07:56:03,032 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:56:03,032 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d
[2023-11-19 07:56:03,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:56:03,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:56:03,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:56:03,472 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:56:03,473 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:56:03,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c
[2023-11-19 07:56:06,601 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:56:06,904 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:56:06,904 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c
[2023-11-19 07:56:06,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/ec753b524/6e2f8f4b08ce4a8ea8a409abb388ebae/FLAG722716146
[2023-11-19 07:56:06,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/data/ec753b524/6e2f8f4b08ce4a8ea8a409abb388ebae
[2023-11-19 07:56:06,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:56:06,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:56:06,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:56:06,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:56:06,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:56:06,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:06" (1/1) ...
[2023-11-19 07:56:06,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40401bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:06, skipping insertion in model container
[2023-11-19 07:56:06,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:06" (1/1) ...
[2023-11-19 07:56:06,972 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:56:07,243 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:07,274 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution]
[2023-11-19 07:56:07,287 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:56:07,325 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:07,350 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:56:07,400 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:56:07,424 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:56:07,424 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:56:07,432 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:56:07,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07 WrapperNode
[2023-11-19 07:56:07,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:56:07,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:56:07,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:56:07,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:56:07,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,511 INFO L138 Inliner]: procedures = 27, calls = 40, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 169
[2023-11-19 07:56:07,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:56:07,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:56:07,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:56:07,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:56:07,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:56:07,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:56:07,611 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:56:07,612 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:56:07,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (1/1) ...
[2023-11-19 07:56:07,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:56:07,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:56:07,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:07,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:56:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:56:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-19 07:56:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:56:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-11-19 07:56:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-19 07:56:07,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-19 07:56:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-19 07:56:07,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-19 07:56:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-11-19 07:56:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-11-19 07:56:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-19 07:56:07,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:56:07,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:56:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:56:07,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-11-19 07:56:07,735 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:56:07,911 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:56:07,914 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:56:08,410 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:56:08,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:56:08,696 INFO L302 CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-19 07:56:08,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:08 BoogieIcfgContainer
[2023-11-19 07:56:08,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:56:08,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:56:08,705 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:56:08,710 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:56:08,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:06" (1/3) ...
[2023-11-19 07:56:08,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec5b2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:08, skipping insertion in model container
[2023-11-19 07:56:08,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:07" (2/3) ...
[2023-11-19 07:56:08,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec5b2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:08, skipping insertion in model container
[2023-11-19 07:56:08,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:08" (3/3) ...
[2023-11-19 07:56:08,715 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c
[2023-11-19 07:56:08,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:56:08,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations.
[2023-11-19 07:56:08,738 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:56:08,849 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:56:08,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 169 transitions, 352 flow
[2023-11-19 07:56:09,062 INFO L124 PetriNetUnfolderBase]: 11/167 cut-off events.
[2023-11-19 07:56:09,062 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:56:09,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 11/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place.
[2023-11-19 07:56:09,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 169 transitions, 352 flow
[2023-11-19 07:56:09,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 162 transitions, 336 flow
[2023-11-19 07:56:09,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:56:09,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 162 transitions, 336 flow
[2023-11-19 07:56:09,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 162 transitions, 336 flow
[2023-11-19 07:56:09,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 162 transitions, 336 flow
[2023-11-19 07:56:09,171 INFO L124 PetriNetUnfolderBase]: 11/162 cut-off events.
[2023-11-19 07:56:09,172 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:56:09,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 162 events. 11/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 117. Up to 3 conditions per place.
[2023-11-19 07:56:09,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 1364
[2023-11-19 07:56:29,224 INFO L134 LiptonReduction]: Checked pairs total: 1687
[2023-11-19 07:56:29,225 INFO L136 LiptonReduction]: Total number of compositions: 174
[2023-11-19 07:56:29,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:56:29,247 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53c90de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:56:29,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations.
[2023-11-19 07:56:29,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:56:29,250 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events.
[2023-11-19 07:56:29,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2023-11-19 07:56:29,251 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:29,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:56:29,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:29,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash 24104, now seen corresponding path program 1 times
[2023-11-19 07:56:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:29,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606415519]
[2023-11-19 07:56:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:29,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:29,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:29,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-19 07:56:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:29,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 07:56:29,397 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:29,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7
[2023-11-19 07:56:29,565 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:29,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:29,576 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:29,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-19 07:56:29,587 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:29,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:29,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-19 07:56:29,609 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:29,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:29,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:29,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:29,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606415519]
[2023-11-19 07:56:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606415519] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604733914]
[2023-11-19 07:56:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:29,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:29,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 343
[2023-11-19 07:56:29,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:29,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:29,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 343
[2023-11-19 07:56:29,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:30,158 INFO L124 PetriNetUnfolderBase]: 295/490 cut-off events.
[2023-11-19 07:56:30,159 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES.
[2023-11-19 07:56:30,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 490 events. 295/490 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1891 event pairs, 238 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 896. Up to 488 conditions per place.
[2023-11-19 07:56:30,167 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions.
[2023-11-19 07:56:30,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 140 flow
[2023-11-19 07:56:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions.
[2023-11-19 07:56:30,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412050534499514
[2023-11-19 07:56:30,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions.
[2023-11-19 07:56:30,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions.
[2023-11-19 07:56:30,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:30,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions.
[2023-11-19 07:56:30,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:30,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:30,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:30,227 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 80 flow. Second operand 3 states and 454 transitions.
[2023-11-19 07:56:30,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 140 flow
[2023-11-19 07:56:30,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-11-19 07:56:30,235 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 76 flow
[2023-11-19 07:56:30,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2023-11-19 07:56:30,242 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places.
[2023-11-19 07:56:30,242 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 76 flow
[2023-11-19 07:56:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:30,243 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:30,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:56:30,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:30,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:30,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:30,447 INFO L85 PathProgramCache]: Analyzing trace with hash 24103, now seen corresponding path program 1 times
[2023-11-19 07:56:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844571698]
[2023-11-19 07:56:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:30,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:30,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:30,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:30,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-19 07:56:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:30,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-11-19 07:56:30,545 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:30,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2023-11-19 07:56:30,582 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:30,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:30,595 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:30,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:30,609 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:30,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:30,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-19 07:56:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:30,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:30,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:30,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844571698]
[2023-11-19 07:56:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844571698] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:30,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:30,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:30,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373576994]
[2023-11-19 07:56:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:30,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 343
[2023-11-19 07:56:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:30,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 343
[2023-11-19 07:56:30,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:31,256 INFO L124 PetriNetUnfolderBase]: 298/494 cut-off events.
[2023-11-19 07:56:31,256 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:56:31,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 494 events. 298/494 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1894 event pairs, 238 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 976. Up to 494 conditions per place.
[2023-11-19 07:56:31,264 INFO L140 encePairwiseOnDemand]: 337/343 looper letters, 31 selfloop transitions, 5 changer transitions 0/36 dead transitions.
[2023-11-19 07:56:31,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 162 flow
[2023-11-19 07:56:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions.
[2023-11-19 07:56:31,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412050534499514
[2023-11-19 07:56:31,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions.
[2023-11-19 07:56:31,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions.
[2023-11-19 07:56:31,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:31,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions.
[2023-11-19 07:56:31,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:31,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:31,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:31,278 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 76 flow. Second operand 3 states and 454 transitions.
[2023-11-19 07:56:31,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 162 flow
[2023-11-19 07:56:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:31,280 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 101 flow
[2023-11-19 07:56:31,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=36}
[2023-11-19 07:56:31,281 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places.
[2023-11-19 07:56:31,281 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 101 flow
[2023-11-19 07:56:31,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:31,282 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:31,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:56:31,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:31,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:31,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:31,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 24196, now seen corresponding path program 1 times
[2023-11-19 07:56:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260889332]
[2023-11-19 07:56:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:31,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:31,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:31,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-11-19 07:56:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:31,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-19 07:56:31,549 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:31,573 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-11-19 07:56:31,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22
[2023-11-19 07:56:31,612 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size
[2023-11-19 07:56:31,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22
[2023-11-19 07:56:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:31,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:31,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260889332]
[2023-11-19 07:56:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260889332] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:31,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939925290]
[2023-11-19 07:56:31,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:31,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 343
[2023-11-19 07:56:31,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:31,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:31,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 343
[2023-11-19 07:56:31,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:32,118 INFO L124 PetriNetUnfolderBase]: 227/387 cut-off events.
[2023-11-19 07:56:32,119 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:56:32,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 387 events. 227/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1406 event pairs, 180 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 766. Up to 387 conditions per place.
[2023-11-19 07:56:32,124 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions.
[2023-11-19 07:56:32,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 156 flow
[2023-11-19 07:56:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions.
[2023-11-19 07:56:32,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305150631681244
[2023-11-19 07:56:32,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions.
[2023-11-19 07:56:32,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions.
[2023-11-19 07:56:32,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:32,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions.
[2023-11-19 07:56:32,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,137 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 101 flow. Second operand 3 states and 443 transitions.
[2023-11-19 07:56:32,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 156 flow
[2023-11-19 07:56:32,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:32,139 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 86 flow
[2023-11-19 07:56:32,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=33}
[2023-11-19 07:56:32,141 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places.
[2023-11-19 07:56:32,141 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 86 flow
[2023-11-19 07:56:32,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,142 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:32,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1]
[2023-11-19 07:56:32,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:32,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:32,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:32,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash 24194, now seen corresponding path program 1 times
[2023-11-19 07:56:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992348927]
[2023-11-19 07:56:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:32,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:32,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:32,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:32,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-11-19 07:56:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:32,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 07:56:32,436 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:32,468 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:32,476 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:32,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5
[2023-11-19 07:56:32,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2023-11-19 07:56:32,527 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:32,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5
[2023-11-19 07:56:32,549 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:32,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2023-11-19 07:56:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:32,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:32,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:32,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992348927]
[2023-11-19 07:56:32,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992348927] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44765197]
[2023-11-19 07:56:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:32,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 343
[2023-11-19 07:56:32,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:32,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 343
[2023-11-19 07:56:32,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:32,956 INFO L124 PetriNetUnfolderBase]: 156/280 cut-off events.
[2023-11-19 07:56:32,957 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:56:32,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 280 events. 156/280 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 943 event pairs, 122 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 570. Up to 280 conditions per place.
[2023-11-19 07:56:32,959 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions.
[2023-11-19 07:56:32,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 136 flow
[2023-11-19 07:56:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions.
[2023-11-19 07:56:32,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43731778425655976
[2023-11-19 07:56:32,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions.
[2023-11-19 07:56:32,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions.
[2023-11-19 07:56:32,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:32,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions.
[2023-11-19 07:56:32,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,971 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 86 flow. Second operand 3 states and 450 transitions.
[2023-11-19 07:56:32,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 136 flow
[2023-11-19 07:56:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:32,973 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 77 flow
[2023-11-19 07:56:32,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=30}
[2023-11-19 07:56:32,974 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places.
[2023-11-19 07:56:32,974 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 77 flow
[2023-11-19 07:56:32,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:32,975 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:32,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-11-19 07:56:32,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:33,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:33,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:33,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 750185, now seen corresponding path program 1 times
[2023-11-19 07:56:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421238214]
[2023-11-19 07:56:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:33,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:33,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-11-19 07:56:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:33,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 07:56:33,263 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:33,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2023-11-19 07:56:33,302 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:33,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:33,320 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:33,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:33,347 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:33,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-19 07:56:33,359 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:33,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:33,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:33,442 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:33,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421238214]
[2023-11-19 07:56:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421238214] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:33,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:56:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4
[2023-11-19 07:56:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134695538]
[2023-11-19 07:56:33,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:56:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:56:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-11-19 07:56:34,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 343
[2023-11-19 07:56:34,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:34,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:34,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 343
[2023-11-19 07:56:34,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:35,195 INFO L124 PetriNetUnfolderBase]: 159/286 cut-off events.
[2023-11-19 07:56:35,196 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:56:35,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 286 events. 159/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 983 event pairs, 122 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 588. Up to 283 conditions per place.
[2023-11-19 07:56:35,199 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 27 selfloop transitions, 9 changer transitions 0/36 dead transitions.
[2023-11-19 07:56:35,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 173 flow
[2023-11-19 07:56:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:56:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 07:56:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions.
[2023-11-19 07:56:35,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096209912536443
[2023-11-19 07:56:35,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions.
[2023-11-19 07:56:35,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions.
[2023-11-19 07:56:35,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:35,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions.
[2023-11-19 07:56:35,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,219 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,219 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 77 flow. Second operand 6 states and 843 transitions.
[2023-11-19 07:56:35,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 173 flow
[2023-11-19 07:56:35,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:35,222 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 137 flow
[2023-11-19 07:56:35,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=40, PETRI_TRANSITIONS=36}
[2023-11-19 07:56:35,223 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places.
[2023-11-19 07:56:35,224 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 137 flow
[2023-11-19 07:56:35,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,225 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:35,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:56:35,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:35,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:35,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:35,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash 23269231, now seen corresponding path program 1 times
[2023-11-19 07:56:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667487641]
[2023-11-19 07:56:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:35,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:35,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:35,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-11-19 07:56:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:35,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 07:56:35,546 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:35,585 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5
[2023-11-19 07:56:35,597 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2023-11-19 07:56:35,614 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,618 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:35,633 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,638 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:35,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:35,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:35,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667487641]
[2023-11-19 07:56:35,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667487641] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:35,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:35,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544978525]
[2023-11-19 07:56:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:35,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:35,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 343
[2023-11-19 07:56:35,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:35,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:35,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 343
[2023-11-19 07:56:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:36,055 INFO L124 PetriNetUnfolderBase]: 147/262 cut-off events.
[2023-11-19 07:56:36,056 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES.
[2023-11-19 07:56:36,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 262 events. 147/262 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 862 event pairs, 112 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 559. Up to 262 conditions per place.
[2023-11-19 07:56:36,059 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions.
[2023-11-19 07:56:36,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 201 flow
[2023-11-19 07:56:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions.
[2023-11-19 07:56:36,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393
[2023-11-19 07:56:36,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions.
[2023-11-19 07:56:36,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions.
[2023-11-19 07:56:36,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:36,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions.
[2023-11-19 07:56:36,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:36,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:36,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:36,073 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 137 flow. Second operand 3 states and 448 transitions.
[2023-11-19 07:56:36,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 201 flow
[2023-11-19 07:56:36,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 180 flow, removed 9 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:36,079 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 114 flow
[2023-11-19 07:56:36,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=34}
[2023-11-19 07:56:36,084 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places.
[2023-11-19 07:56:36,085 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 114 flow
[2023-11-19 07:56:36,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:36,086 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:36,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1]
[2023-11-19 07:56:36,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0
[2023-11-19 07:56:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:36,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 23269230, now seen corresponding path program 1 times
[2023-11-19 07:56:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:36,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201849935]
[2023-11-19 07:56:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:36,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:36,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:36,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2023-11-19 07:56:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:36,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 07:56:36,401 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:36,434 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-11-19 07:56:36,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15
[2023-11-19 07:56:36,463 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-11-19 07:56:36,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15
[2023-11-19 07:56:36,507 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-11-19 07:56:36,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15
[2023-11-19 07:56:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:36,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:36,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201849935]
[2023-11-19 07:56:36,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201849935] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:36,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:36,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:56:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816392]
[2023-11-19 07:56:36,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:36,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:56:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:56:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:56:36,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 343
[2023-11-19 07:56:36,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:36,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:36,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 343
[2023-11-19 07:56:36,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:36,996 INFO L124 PetriNetUnfolderBase]: 135/238 cut-off events.
[2023-11-19 07:56:36,996 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2023-11-19 07:56:36,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 238 events. 135/238 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 777 event pairs, 102 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 502. Up to 238 conditions per place.
[2023-11-19 07:56:36,999 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions.
[2023-11-19 07:56:36,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 174 flow
[2023-11-19 07:56:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:56:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:56:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions.
[2023-11-19 07:56:37,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42468415937803694
[2023-11-19 07:56:37,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions.
[2023-11-19 07:56:37,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions.
[2023-11-19 07:56:37,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:37,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions.
[2023-11-19 07:56:37,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,010 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 114 flow. Second operand 3 states and 437 transitions.
[2023-11-19 07:56:37,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 174 flow
[2023-11-19 07:56:37,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:37,013 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 111 flow
[2023-11-19 07:56:37,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=32}
[2023-11-19 07:56:37,015 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places.
[2023-11-19 07:56:37,015 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 111 flow
[2023-11-19 07:56:37,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,016 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:37,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 07:56:37,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:37,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:37,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:37,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash 721344881, now seen corresponding path program 1 times
[2023-11-19 07:56:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718675198]
[2023-11-19 07:56:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:37,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:37,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2023-11-19 07:56:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:37,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-11-19 07:56:37,349 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:37,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:37,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718675198]
[2023-11-19 07:56:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718675198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:37,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:37,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:56:37,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760623414]
[2023-11-19 07:56:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:37,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:37,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:37,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:37,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 343
[2023-11-19 07:56:37,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:37,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 343
[2023-11-19 07:56:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:37,867 INFO L124 PetriNetUnfolderBase]: 141/257 cut-off events.
[2023-11-19 07:56:37,867 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2023-11-19 07:56:37,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 257 events. 141/257 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 852 event pairs, 109 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 543. Up to 237 conditions per place.
[2023-11-19 07:56:37,869 INFO L140 encePairwiseOnDemand]: 330/343 looper letters, 29 selfloop transitions, 2 changer transitions 7/38 dead transitions.
[2023-11-19 07:56:37,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 201 flow
[2023-11-19 07:56:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:56:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:56:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions.
[2023-11-19 07:56:37,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358600583090379
[2023-11-19 07:56:37,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions.
[2023-11-19 07:56:37,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions.
[2023-11-19 07:56:37,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:37,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions.
[2023-11-19 07:56:37,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,882 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 111 flow. Second operand 4 states and 598 transitions.
[2023-11-19 07:56:37,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 201 flow
[2023-11-19 07:56:37,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:56:37,885 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow
[2023-11-19 07:56:37,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31}
[2023-11-19 07:56:37,886 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places.
[2023-11-19 07:56:37,887 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow
[2023-11-19 07:56:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:37,887 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:37,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:37,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:38,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:38,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:38,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 877217263, now seen corresponding path program 1 times
[2023-11-19 07:56:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:38,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168292939]
[2023-11-19 07:56:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:38,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:38,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:38,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:38,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2023-11-19 07:56:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:38,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-11-19 07:56:38,187 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:38,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7
[2023-11-19 07:56:38,247 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:38,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-19 07:56:38,260 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:38,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:38,274 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:38,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:38,286 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:38,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:38,301 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:38,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:38,493 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:39,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168292939]
[2023-11-19 07:56:39,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168292939] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:39,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:56:39,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6
[2023-11-19 07:56:39,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420291156]
[2023-11-19 07:56:39,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-11-19 07:56:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-11-19 07:56:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2023-11-19 07:56:42,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 343
[2023-11-19 07:56:42,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 8 states, 8 states have (on average 131.5) internal successors, (1052), 8 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:42,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:42,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 343
[2023-11-19 07:56:42,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:43,976 INFO L124 PetriNetUnfolderBase]: 290/515 cut-off events.
[2023-11-19 07:56:43,976 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES.
[2023-11-19 07:56:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 515 events. 290/515 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1997 event pairs, 216 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 1355. Up to 289 conditions per place.
[2023-11-19 07:56:43,981 INFO L140 encePairwiseOnDemand]: 336/343 looper letters, 56 selfloop transitions, 9 changer transitions 0/65 dead transitions.
[2023-11-19 07:56:43,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 363 flow
[2023-11-19 07:56:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 07:56:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-11-19 07:56:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1111 transitions.
[2023-11-19 07:56:43,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40488338192419826
[2023-11-19 07:56:43,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1111 transitions.
[2023-11-19 07:56:43,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1111 transitions.
[2023-11-19 07:56:43,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:43,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1111 transitions.
[2023-11-19 07:56:43,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.875) internal successors, (1111), 8 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 343.0) internal successors, (3087), 9 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 343.0) internal successors, (3087), 9 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,005 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 8 states and 1111 transitions.
[2023-11-19 07:56:44,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 363 flow
[2023-11-19 07:56:44,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:44,013 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 158 flow
[2023-11-19 07:56:44,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=158, PETRI_PLACES=47, PETRI_TRANSITIONS=31}
[2023-11-19 07:56:44,015 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places.
[2023-11-19 07:56:44,015 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 158 flow
[2023-11-19 07:56:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.5) internal successors, (1052), 8 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,016 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:44,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:56:44,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0
[2023-11-19 07:56:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:44,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:44,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 877217175, now seen corresponding path program 1 times
[2023-11-19 07:56:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748218619]
[2023-11-19 07:56:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:44,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:44,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2023-11-19 07:56:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:56:44,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-11-19 07:56:44,314 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:44,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-11-19 07:56:44,333 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:44,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-19 07:56:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:44,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1
[2023-11-19 07:56:44,375 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:44,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:44,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1
[2023-11-19 07:56:44,407 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:44,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1
[2023-11-19 07:56:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:56:44,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:56:44,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:44,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748218619]
[2023-11-19 07:56:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748218619] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:56:44,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:56:44,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:56:44,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692663150]
[2023-11-19 07:56:44,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:56:44,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:56:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:56:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:56:44,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 343
[2023-11-19 07:56:44,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:44,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 343
[2023-11-19 07:56:44,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:44,960 INFO L124 PetriNetUnfolderBase]: 161/294 cut-off events.
[2023-11-19 07:56:44,960 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES.
[2023-11-19 07:56:44,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 294 events. 161/294 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 935 event pairs, 105 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 830. Up to 287 conditions per place.
[2023-11-19 07:56:44,964 INFO L140 encePairwiseOnDemand]: 338/343 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions.
[2023-11-19 07:56:44,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 202 flow
[2023-11-19 07:56:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:56:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-11-19 07:56:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions.
[2023-11-19 07:56:44,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198250728862974
[2023-11-19 07:56:44,968 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions.
[2023-11-19 07:56:44,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions.
[2023-11-19 07:56:44,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:44,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions.
[2023-11-19 07:56:44,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 343.0) internal successors, (1715), 5 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,977 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 158 flow. Second operand 4 states and 576 transitions.
[2023-11-19 07:56:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 202 flow
[2023-11-19 07:56:44,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 175 flow, removed 3 selfloop flow, removed 7 redundant places.
[2023-11-19 07:56:44,980 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 129 flow
[2023-11-19 07:56:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=40, PETRI_TRANSITIONS=28}
[2023-11-19 07:56:44,981 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places.
[2023-11-19 07:56:44,981 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 129 flow
[2023-11-19 07:56:44,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:44,982 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:44,982 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1]
[2023-11-19 07:56:44,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:45,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:45,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:45,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 876895911, now seen corresponding path program 2 times
[2023-11-19 07:56:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636059119]
[2023-11-19 07:56:45,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:56:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:45,191 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:45,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2023-11-19 07:56:45,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:56:45,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:56:45,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-19 07:56:45,311 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:56:45,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2023-11-19 07:56:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:45,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:45,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1
[2023-11-19 07:56:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:45,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:45,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1
[2023-11-19 07:56:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:56:45,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1
[2023-11-19 07:56:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:45,674 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:56:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:56:46,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-11-19 07:56:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636059119]
[2023-11-19 07:56:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636059119] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:56:46,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:56:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10
[2023-11-19 07:56:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641288918]
[2023-11-19 07:56:46,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:56:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-19 07:56:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-11-19 07:56:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-19 07:56:46,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2023-11-19 07:56:49,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 343
[2023-11-19 07:56:49,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 129 flow. Second operand has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:49,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:56:49,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 343
[2023-11-19 07:56:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:56:52,381 INFO L124 PetriNetUnfolderBase]: 167/306 cut-off events.
[2023-11-19 07:56:52,381 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES.
[2023-11-19 07:56:52,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 306 events. 167/306 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 997 event pairs, 105 based on Foata normal form. 6/248 useless extension candidates. Maximal degree in co-relation 875. Up to 297 conditions per place.
[2023-11-19 07:56:52,385 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 20 selfloop transitions, 20 changer transitions 0/40 dead transitions.
[2023-11-19 07:56:52,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 293 flow
[2023-11-19 07:56:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2023-11-19 07:56:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2023-11-19 07:56:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1666 transitions.
[2023-11-19 07:56:52,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477
[2023-11-19 07:56:52,397 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1666 transitions.
[2023-11-19 07:56:52,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1666 transitions.
[2023-11-19 07:56:52,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:56:52,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1666 transitions.
[2023-11-19 07:56:52,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.83333333333334) internal successors, (1666), 12 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:52,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 343.0) internal successors, (4459), 13 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:52,419 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 343.0) internal successors, (4459), 13 states have internal predecessors, (4459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:52,419 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 129 flow. Second operand 12 states and 1666 transitions.
[2023-11-19 07:56:52,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 293 flow
[2023-11-19 07:56:52,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-11-19 07:56:52,424 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 275 flow
[2023-11-19 07:56:52,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=275, PETRI_PLACES=55, PETRI_TRANSITIONS=40}
[2023-11-19 07:56:52,425 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places.
[2023-11-19 07:56:52,425 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 275 flow
[2023-11-19 07:56:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:56:52,427 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:56:52,427 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1]
[2023-11-19 07:56:52,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2023-11-19 07:56:52,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:52,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] ===
[2023-11-19 07:56:52,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:56:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1618282650, now seen corresponding path program 1 times
[2023-11-19 07:56:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:56:52,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536656296]
[2023-11-19 07:56:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:56:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 07:56:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:56:52,633 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 07:56:52,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69e8085d-cf4e-403f-a23c-86ca9ad6f88f/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process