./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.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_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:49,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:49,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:37:49,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:49,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:49,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:49,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:49,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:49,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:49,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:49,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:49,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:49,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:49,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:49,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:49,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:49,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:49,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:49,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:37:49,466 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:37:49,466 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:37:49,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:49,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:37:49,469 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:49,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:49,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:49,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:49,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:49,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:49,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:49,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:49,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:49,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:49,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:49,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:49,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:49,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:49,475 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:49,476 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_d541f73d-21a8-47d5-ae0e-86bac8458aff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2023-11-19 07:37:49,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:49,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:49,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:49,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:49,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:49,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-19 07:37:53,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:53,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:53,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-19 07:37:53,249 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/9b920d31e/bb15a5afde0c4dbdb3489be5c1a348c6/FLAG656573aff [2023-11-19 07:37:53,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/9b920d31e/bb15a5afde0c4dbdb3489be5c1a348c6 [2023-11-19 07:37:53,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:53,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:53,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:53,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:53,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:53,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:53" (1/1) ... [2023-11-19 07:37:53,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d49d0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:53, skipping insertion in model container [2023-11-19 07:37:53,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:53" (1/1) ... [2023-11-19 07:37:53,333 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:53,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:53,648 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 07:37:53,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24d7ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:53, skipping insertion in model container [2023-11-19 07:37:53,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:53,650 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:37:53,654 INFO L158 Benchmark]: Toolchain (without parser) took 382.83ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 118.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:53,654 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:53,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.65ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 118.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:53,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.65ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 118.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: 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_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:56,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:56,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:37:56,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:56,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:56,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:56,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:56,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:56,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:56,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:56,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:56,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:56,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:56,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:56,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:56,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:56,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:56,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:56,550 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:37:56,551 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:37:56,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:37:56,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:56,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:37:56,553 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:37:56,553 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:37:56,554 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:56,554 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:56,555 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:56,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:56,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:56,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:56,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:56,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:56,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:56,559 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:37:56,559 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:37:56,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:56,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:56,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:56,561 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:37:56,562 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:56,562 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_d541f73d-21a8-47d5-ae0e-86bac8458aff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2023-11-19 07:37:57,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:57,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:57,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:57,046 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:57,046 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:57,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-19 07:38:00,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:00,766 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:00,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-19 07:38:00,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/2ea74caf1/2d1b94763f724fe68bab8aaa5cdd6a6c/FLAGf98f07fd1 [2023-11-19 07:38:00,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/data/2ea74caf1/2d1b94763f724fe68bab8aaa5cdd6a6c [2023-11-19 07:38:00,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:00,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:00,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:00,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:00,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:00,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:00" (1/1) ... [2023-11-19 07:38:00,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8ef7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:00, skipping insertion in model container [2023-11-19 07:38:00,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:00" (1/1) ... [2023-11-19 07:38:00,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:01,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:01,149 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:38:01,160 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:01,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:01,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:01,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:01,279 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:01,280 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:01,289 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:01,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01 WrapperNode [2023-11-19 07:38:01,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:01,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:01,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:01,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:01,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,382 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 229 [2023-11-19 07:38:01,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:01,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:01,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:01,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:01,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:01,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:01,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:01,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:01,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (1/1) ... [2023-11-19 07:38:01,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:01,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:38:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:38:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:38:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:38:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:38:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:38:01,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:38:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:38:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:38:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:38:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:38:01,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:01,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:01,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:38:01,572 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 07:38:01,721 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:01,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:02,636 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:02,913 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:02,913 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:38:02,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:02 BoogieIcfgContainer [2023-11-19 07:38:02,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:02,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:02,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:02,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:02,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:00" (1/3) ... [2023-11-19 07:38:02,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34df130c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:02, skipping insertion in model container [2023-11-19 07:38:02,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:01" (2/3) ... [2023-11-19 07:38:02,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34df130c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:02, skipping insertion in model container [2023-11-19 07:38:02,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:02" (3/3) ... [2023-11-19 07:38:02,928 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-11-19 07:38:02,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:02,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:38:02,950 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:38:03,080 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:38:03,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 263 transitions, 547 flow [2023-11-19 07:38:03,261 INFO L124 PetriNetUnfolderBase]: 18/260 cut-off events. [2023-11-19 07:38:03,261 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:38:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 260 events. 18/260 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 512 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-19 07:38:03,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 263 transitions, 547 flow [2023-11-19 07:38:03,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 255 transitions, 528 flow [2023-11-19 07:38:03,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:03,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 255 transitions, 528 flow [2023-11-19 07:38:03,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 255 transitions, 528 flow [2023-11-19 07:38:03,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 255 transitions, 528 flow [2023-11-19 07:38:03,372 INFO L124 PetriNetUnfolderBase]: 18/255 cut-off events. [2023-11-19 07:38:03,372 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:38:03,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 255 events. 18/255 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 509 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 202. Up to 2 conditions per place. [2023-11-19 07:38:03,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 13392 [2023-11-19 07:38:40,542 INFO L134 LiptonReduction]: Checked pairs total: 14216 [2023-11-19 07:38:40,542 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-11-19 07:38:40,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:40,572 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;@310ee30b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:40,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-11-19 07:38:40,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:40,578 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:38:40,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:40,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:40,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:38:40,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-11-19 07:38:40,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash 38401, now seen corresponding path program 1 times [2023-11-19 07:38:40,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:40,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589881836] [2023-11-19 07:38:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,608 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 07:38:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:40,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:38:40,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:40,914 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 18 treesize of output 7 [2023-11-19 07:38:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:40,947 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 07:38:40,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:40,962 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 07:38:40,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:40,972 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 07:38:40,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:40,985 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 07:38:41,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,001 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 07:38:41,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,029 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 07:38:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,041 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 07:38:41,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,051 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 07:38:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,062 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 07:38:41,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,072 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 07:38:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,083 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 07:38:41,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,095 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 07:38:41,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,106 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 07:38:41,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,119 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 07:38:41,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,126 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 07:38:41,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,141 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 07:38:41,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,163 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 07:38:41,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,206 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 07:38:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,218 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 07:38:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,244 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 07:38:41,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:38:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,299 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 07:38:41,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:41,310 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 07:38:41,342 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 07:38:41,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:41,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589881836] [2023-11-19 07:38:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589881836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:41,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500157619] [2023-11-19 07:38:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:41,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:41,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 547 [2023-11-19 07:38:41,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 07:38:41,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:41,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 547 [2023-11-19 07:38:41,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:42,594 INFO L124 PetriNetUnfolderBase]: 2557/3595 cut-off events. [2023-11-19 07:38:42,594 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-19 07:38:42,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 3595 events. 2557/3595 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 15451 event pairs, 2069 based on Foata normal form. 0/1620 useless extension candidates. Maximal degree in co-relation 6444. Up to 3594 conditions per place. [2023-11-19 07:38:42,625 INFO L140 encePairwiseOnDemand]: 532/547 looper letters, 46 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-11-19 07:38:42,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 222 flow [2023-11-19 07:38:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-11-19 07:38:42,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45399146861669715 [2023-11-19 07:38:42,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-11-19 07:38:42,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-11-19 07:38:42,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:42,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-11-19 07:38:42,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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 07:38:42,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:42,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:42,671 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 128 flow. Second operand 3 states and 745 transitions. [2023-11-19 07:38:42,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 222 flow [2023-11-19 07:38:42,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:38:42,681 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 131 flow [2023-11-19 07:38:42,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-11-19 07:38:42,686 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -12 predicate places. [2023-11-19 07:38:42,686 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 131 flow [2023-11-19 07:38:42,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 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 07:38:42,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:42,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:38:42,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:42,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:42,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-11-19 07:38:42,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 38524, now seen corresponding path program 1 times [2023-11-19 07:38:42,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:42,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382420175] [2023-11-19 07:38:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:42,890 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 07:38:42,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:42,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:42,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:42,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:43,003 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 07:38:43,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:43,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382420175] [2023-11-19 07:38:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382420175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505740422] [2023-11-19 07:38:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:43,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:43,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:43,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 547 [2023-11-19 07:38:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 07:38:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:43,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 547 [2023-11-19 07:38:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:43,932 INFO L124 PetriNetUnfolderBase]: 2554/3592 cut-off events. [2023-11-19 07:38:43,932 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-19 07:38:43,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 3592 events. 2554/3592 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 15446 event pairs, 2069 based on Foata normal form. 0/1622 useless extension candidates. Maximal degree in co-relation 7226. Up to 3591 conditions per place. [2023-11-19 07:38:43,960 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-19 07:38:43,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 214 flow [2023-11-19 07:38:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-19 07:38:43,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4515539305301645 [2023-11-19 07:38:43,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-19 07:38:43,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-19 07:38:43,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:43,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-19 07:38:43,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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 07:38:43,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:43,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:43,976 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 131 flow. Second operand 3 states and 741 transitions. [2023-11-19 07:38:43,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 214 flow [2023-11-19 07:38:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:43,978 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 118 flow [2023-11-19 07:38:43,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-19 07:38:43,980 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -11 predicate places. [2023-11-19 07:38:43,980 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 118 flow [2023-11-19 07:38:43,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 07:38:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:38:43,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:44,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-11-19 07:38:44,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash 38400, now seen corresponding path program 1 times [2023-11-19 07:38:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209167130] [2023-11-19 07:38:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:44,185 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 07:38:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:44,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:44,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:44,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:44,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:44,286 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 07:38:44,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,297 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 07:38:44,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,309 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 07:38:44,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,316 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 07:38:44,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,339 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 07:38:44,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,354 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 07:38:44,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,385 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 07:38:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,396 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 07:38:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,407 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 11 treesize of output 1 [2023-11-19 07:38:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,415 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 07:38:44,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,431 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 07:38:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,438 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 07:38:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,487 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 07:38:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,497 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 07:38:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,517 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 07:38:44,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,526 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 07:38:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,545 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 07:38:44,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-19 07:38:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,588 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 07:38:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,598 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 07:38:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,607 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 07:38:44,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,613 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 07:38:44,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,623 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 07:38:44,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:44,629 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 07:38:44,634 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 07:38:44,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:44,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:44,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209167130] [2023-11-19 07:38:44,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209167130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:44,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:44,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:44,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247736356] [2023-11-19 07:38:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:44,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:44,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:44,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 547 [2023-11-19 07:38:44,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 07:38:44,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:44,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 547 [2023-11-19 07:38:44,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:45,615 INFO L124 PetriNetUnfolderBase]: 2554/3590 cut-off events. [2023-11-19 07:38:45,616 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-19 07:38:45,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 3590 events. 2554/3590 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 15586 event pairs, 2069 based on Foata normal form. 2/1622 useless extension candidates. Maximal degree in co-relation 7224. Up to 3587 conditions per place. [2023-11-19 07:38:45,643 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-19 07:38:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 208 flow [2023-11-19 07:38:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-11-19 07:38:45,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466788543570993 [2023-11-19 07:38:45,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-11-19 07:38:45,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-11-19 07:38:45,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:45,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-11-19 07:38:45,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 07:38:45,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:45,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:45,657 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 118 flow. Second operand 3 states and 733 transitions. [2023-11-19 07:38:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 208 flow [2023-11-19 07:38:45,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:45,660 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 118 flow [2023-11-19 07:38:45,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-19 07:38:45,662 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -12 predicate places. [2023-11-19 07:38:45,662 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 118 flow [2023-11-19 07:38:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 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 07:38:45,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:45,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:45,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:45,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:45,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2023-11-19 07:38:45,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1193832, now seen corresponding path program 1 times [2023-11-19 07:38:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:38:45,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761190944] [2023-11-19 07:38:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:45,867 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 07:38:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:38:45,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:45,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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 07:38:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:45,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:45,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:46,007 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:38:46,008 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 07:38:46,047 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:38:46,047 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 07:38:46,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:46,084 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:38:46,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:38:46,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:46,139 INFO L349 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-19 07:38:46,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-19 07:38:46,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:38:46,184 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:38:46,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:38:46,215 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:38:46,216 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 07:38:46,367 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 07:38:46,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:46,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:38:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761190944] [2023-11-19 07:38:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761190944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778090319] [2023-11-19 07:38:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:38:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:46,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 547 [2023-11-19 07:38:46,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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 07:38:46,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:46,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 547 [2023-11-19 07:38:46,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:47,351 INFO L124 PetriNetUnfolderBase]: 2014/2869 cut-off events. [2023-11-19 07:38:47,351 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-19 07:38:47,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 2869 events. 2014/2869 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12121 event pairs, 1625 based on Foata normal form. 0/1369 useless extension candidates. Maximal degree in co-relation 5769. Up to 2869 conditions per place. [2023-11-19 07:38:47,406 INFO L140 encePairwiseOnDemand]: 544/547 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-19 07:38:47,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 198 flow [2023-11-19 07:38:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 723 transitions. [2023-11-19 07:38:47,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405850091407678 [2023-11-19 07:38:47,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 723 transitions. [2023-11-19 07:38:47,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 723 transitions. [2023-11-19 07:38:47,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:47,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 723 transitions. [2023-11-19 07:38:47,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 07:38:47,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:47,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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 07:38:47,422 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 118 flow. Second operand 3 states and 723 transitions. [2023-11-19 07:38:47,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 198 flow [2023-11-19 07:38:47,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:47,424 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 106 flow [2023-11-19 07:38:47,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-19 07:38:47,426 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -14 predicate places. [2023-11-19 07:38:47,426 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 106 flow [2023-11-19 07:38:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 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 07:38:47,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:47,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:47,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d541f73d-21a8-47d5-ae0e-86bac8458aff/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)] Ended with exit code 0