./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:56,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:56,714 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:04:56,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:56,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:56,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:56,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:56,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:56,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:56,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:56,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:56,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:56,783 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:56,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:56,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:56,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:56,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:56,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:56,787 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:56,788 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:56,788 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:56,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:56,789 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:56,790 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:56,790 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:56,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:56,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:56,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:56,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:56,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:56,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:56,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:56,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:56,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:56,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:56,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:56,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:56,796 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:56,797 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_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2023-11-06 22:04:57,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:57,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:57,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:57,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:57,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:57,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-06 22:05:00,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:05:00,648 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:05:00,649 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-06 22:05:00,659 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/4ad01e2a6/da165281920f4b1c8dac6e3f9901fd68/FLAG965cab6d7 [2023-11-06 22:05:00,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/4ad01e2a6/da165281920f4b1c8dac6e3f9901fd68 [2023-11-06 22:05:00,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:05:00,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:05:00,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:00,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:05:00,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:05:00,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:00" (1/1) ... [2023-11-06 22:05:00,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccc975f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:00, skipping insertion in model container [2023-11-06 22:05:00,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:00" (1/1) ... [2023-11-06 22:05:00,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:01,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:01,060 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) [2023-11-06 22:05:01,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f1eacc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:01, skipping insertion in model container [2023-11-06 22:05:01,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:01,061 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:05:01,063 INFO L158 Benchmark]: Toolchain (without parser) took 369.86ms. Allocated memory is still 157.3MB. Free memory was 124.6MB in the beginning and 114.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:05:01,064 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 100.7MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:05:01,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.47ms. Allocated memory is still 157.3MB. Free memory was 124.6MB in the beginning and 114.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:05:01,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 100.7MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.47ms. Allocated memory is still 157.3MB. Free memory was 124.6MB in the beginning and 114.1MB 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: 94]: 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_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:05:03,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:05:03,847 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:05:03,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:05:03,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:05:03,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:05:03,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:05:03,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:05:03,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:05:03,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:05:03,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:05:03,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:05:03,915 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:05:03,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:05:03,917 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:05:03,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:05:03,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:05:03,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:05:03,919 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:05:03,920 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:05:03,920 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:05:03,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:05:03,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:05:03,922 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:05:03,922 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:05:03,923 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:05:03,923 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:05:03,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:05:03,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:05:03,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:05:03,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:05:03,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:03,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:05:03,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:05:03,928 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:05:03,929 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:05:03,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:05:03,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:05:03,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:05:03,931 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:05:03,931 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:05:03,931 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_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2023-11-06 22:05:04,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:05:04,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:05:04,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:05:04,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:05:04,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:05:04,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-06 22:05:07,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:05:07,938 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:05:07,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-06 22:05:07,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/3bab31b8e/6de697e21c3c41569aa27f1332cbffb4/FLAGdf038214c [2023-11-06 22:05:07,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/data/3bab31b8e/6de697e21c3c41569aa27f1332cbffb4 [2023-11-06 22:05:07,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:05:07,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:05:07,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:07,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:05:07,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:05:07,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:07" (1/1) ... [2023-11-06 22:05:07,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1a891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:07, skipping insertion in model container [2023-11-06 22:05:07,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:07" (1/1) ... [2023-11-06 22:05:08,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:08,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:08,347 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:05:08,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:08,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:08,449 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:05:08,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:08,543 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:05:08,547 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:05:08,564 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:05:08,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08 WrapperNode [2023-11-06 22:05:08,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:08,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:08,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:05:08,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:05:08,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,677 INFO L138 Inliner]: procedures = 30, calls = 75, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 367 [2023-11-06 22:05:08,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:08,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:05:08,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:05:08,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:05:08,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:05:08,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:05:08,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:05:08,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:05:08,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:08,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:08,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:05:08,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:05:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:05:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:05:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:05:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:05:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:05:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:05:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:05:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:05:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:05:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:05:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:05:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:05:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:05:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:05:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:05:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:05:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:05:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:05:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:05:08,929 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:05:09,146 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:05:09,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:05:10,549 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:05:11,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:05:11,007 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-06 22:05:11,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:11 BoogieIcfgContainer [2023-11-06 22:05:11,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:05:11,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:05:11,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:05:11,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:05:11,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:05:07" (1/3) ... [2023-11-06 22:05:11,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de3c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:11, skipping insertion in model container [2023-11-06 22:05:11,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (2/3) ... [2023-11-06 22:05:11,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de3c051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:11, skipping insertion in model container [2023-11-06 22:05:11,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:11" (3/3) ... [2023-11-06 22:05:11,029 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-11-06 22:05:11,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:05:11,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-11-06 22:05:11,056 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:05:11,405 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:05:11,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 430 transitions, 881 flow [2023-11-06 22:05:11,668 INFO L124 PetriNetUnfolderBase]: 35/427 cut-off events. [2023-11-06 22:05:11,668 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:05:11,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 427 events. 35/427 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1138 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 329. Up to 2 conditions per place. [2023-11-06 22:05:11,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 430 transitions, 881 flow [2023-11-06 22:05:11,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 422 transitions, 862 flow [2023-11-06 22:05:11,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:05:11,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 422 transitions, 862 flow [2023-11-06 22:05:11,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 422 transitions, 862 flow [2023-11-06 22:05:11,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 422 transitions, 862 flow [2023-11-06 22:05:11,843 INFO L124 PetriNetUnfolderBase]: 35/422 cut-off events. [2023-11-06 22:05:11,843 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:05:11,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 422 events. 35/422 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1147 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 329. Up to 2 conditions per place. [2023-11-06 22:05:11,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 26448 [2023-11-06 22:07:34,991 INFO L134 LiptonReduction]: Checked pairs total: 36164 [2023-11-06 22:07:34,991 INFO L136 LiptonReduction]: Total number of compositions: 501 [2023-11-06 22:07:35,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:07:35,015 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;@a2422f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:07:35,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2023-11-06 22:07:35,019 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:07:35,020 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:07:35,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:07:35,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:07:35,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:07:35,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-11-06 22:07:35,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 62760, now seen corresponding path program 1 times [2023-11-06 22:07:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155735588] [2023-11-06 22:07:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,043 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 [2023-11-06 22:07:35,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:35,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:07:35,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:07:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:35,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:07:35,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:35,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-06 22:07:35,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,465 INFO L351 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 [2023-11-06 22:07:35,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,501 INFO L351 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 [2023-11-06 22:07:35,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,512 INFO L351 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 [2023-11-06 22:07:35,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,534 INFO L351 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 [2023-11-06 22:07:35,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,545 INFO L351 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 [2023-11-06 22:07:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,560 INFO L351 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 [2023-11-06 22:07:35,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,566 INFO L351 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 [2023-11-06 22:07:35,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,578 INFO L351 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 [2023-11-06 22:07:35,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,594 INFO L351 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 [2023-11-06 22:07:35,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,613 INFO L351 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 [2023-11-06 22:07:35,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,634 INFO L351 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 [2023-11-06 22:07:35,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,654 INFO L351 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 [2023-11-06 22:07:35,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,661 INFO L351 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 [2023-11-06 22:07:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,684 INFO L351 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 [2023-11-06 22:07:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,694 INFO L351 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 [2023-11-06 22:07:35,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,703 INFO L351 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 [2023-11-06 22:07:35,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,712 INFO L351 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 [2023-11-06 22:07:35,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,735 INFO L351 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 [2023-11-06 22:07:35,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,746 INFO L351 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 [2023-11-06 22:07:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,757 INFO L351 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 [2023-11-06 22:07:35,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,763 INFO L351 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 [2023-11-06 22:07:35,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,773 INFO L351 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 [2023-11-06 22:07:35,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:35,779 INFO L351 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 [2023-11-06 22:07:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:35,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:35,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155735588] [2023-11-06 22:07:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155735588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:35,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:07:35,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880098434] [2023-11-06 22:07:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:36,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 931 [2023-11-06 22:07:36,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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) [2023-11-06 22:07:36,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:07:36,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 931 [2023-11-06 22:07:36,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:07:52,687 INFO L124 PetriNetUnfolderBase]: 70595/88893 cut-off events. [2023-11-06 22:07:52,688 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2023-11-06 22:07:52,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178713 conditions, 88893 events. 70595/88893 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 6280. Compared 523051 event pairs, 44649 based on Foata normal form. 0/19155 useless extension candidates. Maximal degree in co-relation 171375. Up to 88824 conditions per place. [2023-11-06 22:07:53,293 INFO L140 encePairwiseOnDemand]: 904/931 looper letters, 80 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-06 22:07:53,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 368 flow [2023-11-06 22:07:53,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:07:53,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1202 transitions. [2023-11-06 22:07:53,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303616183315431 [2023-11-06 22:07:53,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1202 transitions. [2023-11-06 22:07:53,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1202 transitions. [2023-11-06 22:07:53,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:07:53,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1202 transitions. [2023-11-06 22:07:53,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 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) [2023-11-06 22:07:53,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 931.0) internal successors, (3724), 4 states have internal predecessors, (3724), 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) [2023-11-06 22:07:53,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 931.0) internal successors, (3724), 4 states have internal predecessors, (3724), 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) [2023-11-06 22:07:53,370 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 238 flow. Second operand 3 states and 1202 transitions. [2023-11-06 22:07:53,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 368 flow [2023-11-06 22:07:53,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:07:53,392 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 196 flow [2023-11-06 22:07:53,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=931, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-11-06 22:07:53,398 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -24 predicate places. [2023-11-06 22:07:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 196 flow [2023-11-06 22:07:53,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 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) [2023-11-06 22:07:53,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:07:53,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:07:53,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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)] Ended with exit code 0 [2023-11-06 22:07:53,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:07:53,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-11-06 22:07:53,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 62761, now seen corresponding path program 1 times [2023-11-06 22:07:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:53,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830947585] [2023-11-06 22:07:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:53,617 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 [2023-11-06 22:07:53,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:53,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:07:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:07:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:53,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:07:53,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:53,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:07:53,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,763 INFO L351 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 [2023-11-06 22:07:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,776 INFO L351 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 [2023-11-06 22:07:53,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,784 INFO L351 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 [2023-11-06 22:07:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,802 INFO L351 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 [2023-11-06 22:07:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,826 INFO L351 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 [2023-11-06 22:07:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,848 INFO L351 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 [2023-11-06 22:07:53,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,873 INFO L351 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 [2023-11-06 22:07:53,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,890 INFO L351 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 [2023-11-06 22:07:53,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,912 INFO L351 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 [2023-11-06 22:07:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,944 INFO L351 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 [2023-11-06 22:07:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:53,982 INFO L351 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 [2023-11-06 22:07:54,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,001 INFO L351 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 [2023-11-06 22:07:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,024 INFO L351 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 [2023-11-06 22:07:54,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,035 INFO L351 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 [2023-11-06 22:07:54,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,048 INFO L351 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 [2023-11-06 22:07:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,065 INFO L351 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 [2023-11-06 22:07:54,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,075 INFO L351 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 [2023-11-06 22:07:54,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,093 INFO L351 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 [2023-11-06 22:07:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,105 INFO L351 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 [2023-11-06 22:07:54,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,120 INFO L351 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 [2023-11-06 22:07:54,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,128 INFO L351 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 [2023-11-06 22:07:54,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,145 INFO L351 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 [2023-11-06 22:07:54,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:54,167 INFO L351 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 [2023-11-06 22:07:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:54,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:07:54,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:07:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830947585] [2023-11-06 22:07:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830947585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:07:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069314697] [2023-11-06 22:07:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:54,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:07:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:07:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:54,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 931 [2023-11-06 22:07:54,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 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) [2023-11-06 22:07:54,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:07:54,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 931 [2023-11-06 22:07:54,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:08,458 INFO L124 PetriNetUnfolderBase]: 70600/88901 cut-off events. [2023-11-06 22:08:08,458 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-06 22:08:08,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178135 conditions, 88901 events. 70600/88901 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 6280. Compared 523054 event pairs, 44649 based on Foata normal form. 0/19163 useless extension candidates. Maximal degree in co-relation 178080. Up to 88837 conditions per place. [2023-11-06 22:08:08,909 INFO L140 encePairwiseOnDemand]: 918/931 looper letters, 84 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-11-06 22:08:08,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 97 transitions, 408 flow [2023-11-06 22:08:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1180 transitions. [2023-11-06 22:08:08,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248478338703904 [2023-11-06 22:08:08,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1180 transitions. [2023-11-06 22:08:08,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1180 transitions. [2023-11-06 22:08:08,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:08,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1180 transitions. [2023-11-06 22:08:08,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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) [2023-11-06 22:08:08,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 931.0) internal successors, (3724), 4 states have internal predecessors, (3724), 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) [2023-11-06 22:08:08,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 931.0) internal successors, (3724), 4 states have internal predecessors, (3724), 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) [2023-11-06 22:08:08,931 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 196 flow. Second operand 3 states and 1180 transitions. [2023-11-06 22:08:08,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 97 transitions, 408 flow [2023-11-06 22:08:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:08,937 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 262 flow [2023-11-06 22:08:08,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=931, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2023-11-06 22:08:08,939 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -22 predicate places. [2023-11-06 22:08:08,940 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 262 flow [2023-11-06 22:08:08,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 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) [2023-11-06 22:08:08,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:08,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:08,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:09,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:09,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-11-06 22:08:09,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1950816, now seen corresponding path program 1 times [2023-11-06 22:08:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587283367] [2023-11-06 22:08:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:09,146 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 [2023-11-06 22:08:09,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:09,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:08:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:09,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:08:09,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:09,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:08:09,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,356 INFO L351 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 [2023-11-06 22:08:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,369 INFO L351 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 [2023-11-06 22:08:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,376 INFO L351 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 [2023-11-06 22:08:09,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,400 INFO L351 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 [2023-11-06 22:08:09,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,413 INFO L351 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 [2023-11-06 22:08:09,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,443 INFO L351 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 [2023-11-06 22:08:09,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,479 INFO L351 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 [2023-11-06 22:08:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,504 INFO L351 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 [2023-11-06 22:08:09,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,517 INFO L351 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 [2023-11-06 22:08:09,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,532 INFO L351 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 [2023-11-06 22:08:09,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,552 INFO L351 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 [2023-11-06 22:08:09,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,569 INFO L351 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 [2023-11-06 22:08:09,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,589 INFO L351 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 [2023-11-06 22:08:09,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,603 INFO L351 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 [2023-11-06 22:08:09,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,612 INFO L351 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 [2023-11-06 22:08:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,625 INFO L351 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 [2023-11-06 22:08:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,633 INFO L351 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 [2023-11-06 22:08:09,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,660 INFO L351 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 [2023-11-06 22:08:09,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,673 INFO L351 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 [2023-11-06 22:08:09,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,686 INFO L351 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 [2023-11-06 22:08:09,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,694 INFO L351 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 [2023-11-06 22:08:09,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,708 INFO L351 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 [2023-11-06 22:08:09,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:09,716 INFO L351 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 [2023-11-06 22:08:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:09,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:10,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587283367] [2023-11-06 22:08:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587283367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:10,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:10,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:08:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022816341] [2023-11-06 22:08:10,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:10,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:10,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:08:13,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 931 [2023-11-06 22:08:13,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 347.0) internal successors, (2082), 6 states have internal predecessors, (2082), 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) [2023-11-06 22:08:13,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:13,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 931 [2023-11-06 22:08:13,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:15,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:17,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:08:31,942 INFO L124 PetriNetUnfolderBase]: 70615/88925 cut-off events. [2023-11-06 22:08:31,943 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-06 22:08:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178232 conditions, 88925 events. 70615/88925 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 6282. Compared 524980 event pairs, 44649 based on Foata normal form. 0/19173 useless extension candidates. Maximal degree in co-relation 178080. Up to 88849 conditions per place. [2023-11-06 22:08:32,381 INFO L140 encePairwiseOnDemand]: 918/931 looper letters, 84 selfloop transitions, 34 changer transitions 0/121 dead transitions. [2023-11-06 22:08:32,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 600 flow [2023-11-06 22:08:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:08:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:08:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2203 transitions. [2023-11-06 22:08:32,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943788041532402 [2023-11-06 22:08:32,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2203 transitions. [2023-11-06 22:08:32,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2203 transitions. [2023-11-06 22:08:32,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:32,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2203 transitions. [2023-11-06 22:08:32,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 367.1666666666667) internal successors, (2203), 6 states have internal predecessors, (2203), 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) [2023-11-06 22:08:32,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 931.0) internal successors, (6517), 7 states have internal predecessors, (6517), 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) [2023-11-06 22:08:32,419 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 931.0) internal successors, (6517), 7 states have internal predecessors, (6517), 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) [2023-11-06 22:08:32,419 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 262 flow. Second operand 6 states and 2203 transitions. [2023-11-06 22:08:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 600 flow [2023-11-06 22:08:32,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:32,424 INFO L231 Difference]: Finished difference. Result has 94 places, 121 transitions, 471 flow [2023-11-06 22:08:32,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=931, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=94, PETRI_TRANSITIONS=121} [2023-11-06 22:08:32,426 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -16 predicate places. [2023-11-06 22:08:32,426 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 121 transitions, 471 flow [2023-11-06 22:08:32,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 347.0) internal successors, (2082), 6 states have internal predecessors, (2082), 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) [2023-11-06 22:08:32,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:32,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:08:32,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:32,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-11-06 22:08:32,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash 60573898, now seen corresponding path program 1 times [2023-11-06 22:08:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167150296] [2023-11-06 22:08:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:32,641 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 [2023-11-06 22:08:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:32,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:08:32,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de77f266-a9f3-4d2b-8eee-7ba38b93864a/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:08:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:32,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:08:32,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:32,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:32,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167150296] [2023-11-06 22:08:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167150296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:32,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:32,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:08:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743523880] [2023-11-06 22:08:32,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:08:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:32,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:08:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:08:33,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 931 [2023-11-06 22:08:33,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 121 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 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) [2023-11-06 22:08:33,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:33,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 931 [2023-11-06 22:08:33,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand