./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:26:44,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:26:44,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 10:26:44,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:26:44,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:26:44,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:26:44,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:26:44,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:26:44,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:26:44,654 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:26:44,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:26:44,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:26:44,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:26:44,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:26:44,655 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:26:44,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:26:44,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:26:44,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:26:44,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:26:44,656 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:26:44,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:26:44,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:26:44,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:26:44,658 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2024-12-02 10:26:44,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:26:44,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:26:44,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:26:44,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:26:44,912 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:26:44,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-12-02 10:26:47,526 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/ab0d6faab/899b2204c4064b4398336459bc571da6/FLAG04002450f [2024-12-02 10:26:47,829 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:26:47,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-12-02 10:26:47,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/ab0d6faab/899b2204c4064b4398336459bc571da6/FLAG04002450f [2024-12-02 10:26:48,113 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/ab0d6faab/899b2204c4064b4398336459bc571da6 [2024-12-02 10:26:48,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:26:48,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:26:48,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:26:48,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:26:48,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:26:48,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:26:48" (1/1) ... [2024-12-02 10:26:48,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b9fe25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:48, skipping insertion in model container [2024-12-02 10:26:48,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:26:48" (1/1) ... [2024-12-02 10:26:48,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:26:48,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:26:48,547 ERROR L321 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) [2024-12-02 10:26:48,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2909e0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:48, skipping insertion in model container [2024-12-02 10:26:48,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:26:48,548 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-12-02 10:26:48,550 INFO L158 Benchmark]: Toolchain (without parser) took 433.50ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 72.6MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 10:26:48,551 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:26:48,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.51ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 72.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 10:26:48,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.51ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 72.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:26:50,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:26:50,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-12-02 10:26:50,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:26:50,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:26:50,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:26:50,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:26:50,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:26:50,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:26:50,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:26:50,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:26:50,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:26:50,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:26:50,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:26:50,510 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:26:50,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:26:50,511 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:26:50,512 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:26:50,512 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:26:50,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:26:50,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:26:50,513 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2024-12-02 10:26:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:26:50,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:26:50,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:26:50,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:26:50,764 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:26:50,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-12-02 10:26:53,535 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/9d59191d4/fee1ea57fd6e49ab9ee645762d583632/FLAG0b15002ef [2024-12-02 10:26:53,847 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:26:53,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2024-12-02 10:26:53,873 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/9d59191d4/fee1ea57fd6e49ab9ee645762d583632/FLAG0b15002ef [2024-12-02 10:26:54,111 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/data/9d59191d4/fee1ea57fd6e49ab9ee645762d583632 [2024-12-02 10:26:54,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:26:54,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:26:54,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:26:54,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:26:54,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:26:54,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d246fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54, skipping insertion in model container [2024-12-02 10:26:54,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:26:54,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:26:54,511 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-12-02 10:26:54,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:26:54,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:26:54,587 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:26:54,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:26:54,696 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:26:54,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54 WrapperNode [2024-12-02 10:26:54,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:26:54,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:26:54,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:26:54,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:26:54,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,743 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2024-12-02 10:26:54,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:26:54,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:26:54,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:26:54,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:26:54,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,774 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 13, 2]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 6, 2]. [2024-12-02 10:26:54,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:26:54,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:26:54,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:26:54,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:26:54,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (1/1) ... [2024-12-02 10:26:54,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:26:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:54,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:26:54,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:26:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 10:26:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 10:26:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-12-02 10:26:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-12-02 10:26:54,857 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-12-02 10:26:54,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:26:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:26:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:26:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:26:54,860 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 10:26:55,130 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:26:55,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:26:55,609 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:26:55,609 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:26:55,722 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:26:55,723 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 10:26:55,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:26:55 BoogieIcfgContainer [2024-12-02 10:26:55,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:26:55,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:26:55,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:26:55,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:26:55,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:26:54" (1/3) ... [2024-12-02 10:26:55,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6aaffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:26:55, skipping insertion in model container [2024-12-02 10:26:55,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:26:54" (2/3) ... [2024-12-02 10:26:55,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6aaffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:26:55, skipping insertion in model container [2024-12-02 10:26:55,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:26:55" (3/3) ... [2024-12-02 10:26:55,730 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2024-12-02 10:26:55,741 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:26:55,742 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_1-container_of-global.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2024-12-02 10:26:55,743 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:26:55,803 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 10:26:55,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2024-12-02 10:26:55,898 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2024-12-02 10:26:55,900 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 10:26:55,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 18/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 528 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2024-12-02 10:26:55,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2024-12-02 10:26:55,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2024-12-02 10:26:55,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:26:55,930 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@4aca544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:26:55,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-12-02 10:26:55,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:26:55,935 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-12-02 10:26:55,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:26:55,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:55,936 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:26:55,937 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:26:55,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash 495006, now seen corresponding path program 1 times [2024-12-02 10:26:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:26:55,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929007928] [2024-12-02 10:26:55,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:55,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:55,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:55,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:26:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:56,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:26:56,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:56,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:26:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:56,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:26:56,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:26:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929007928] [2024-12-02 10:26:56,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929007928] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:56,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:56,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:26:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852293985] [2024-12-02 10:26:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:56,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:26:56,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:26:56,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:26:56,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:26:56,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-12-02 10:26:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-12-02 10:26:56,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:56,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-12-02 10:26:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:26:56,964 INFO L124 PetriNetUnfolderBase]: 707/2019 cut-off events. [2024-12-02 10:26:56,964 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-12-02 10:26:56,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 2019 events. 707/2019 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15812 event pairs, 95 based on Foata normal form. 156/1873 useless extension candidates. Maximal degree in co-relation 3062. Up to 1002 conditions per place. [2024-12-02 10:26:56,982 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-12-02 10:26:56,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2024-12-02 10:26:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:26:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:26:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-12-02 10:26:56,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 10:26:57,000 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2024-12-02 10:26:57,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2024-12-02 10:26:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:26:57,010 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2024-12-02 10:26:57,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2024-12-02 10:26:57,017 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2024-12-02 10:26:57,017 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2024-12-02 10:26:57,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-12-02 10:26:57,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:57,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:26:57,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:26:57,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:57,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:26:57,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash 495007, now seen corresponding path program 1 times [2024-12-02 10:26:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:26:57,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620439429] [2024-12-02 10:26:57,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:57,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:57,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:57,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:26:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:57,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:26:57,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:57,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:26:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:57,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:26:57,371 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:26:57,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620439429] [2024-12-02 10:26:57,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620439429] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:57,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:26:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398450616] [2024-12-02 10:26:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:26:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:26:57,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:26:57,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:26:57,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2024-12-02 10:26:57,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-12-02 10:26:57,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:57,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2024-12-02 10:26:57,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:26:58,009 INFO L124 PetriNetUnfolderBase]: 707/2015 cut-off events. [2024-12-02 10:26:58,010 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-12-02 10:26:58,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 2015 events. 707/2015 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15782 event pairs, 95 based on Foata normal form. 2/1715 useless extension candidates. Maximal degree in co-relation 479. Up to 1002 conditions per place. [2024-12-02 10:26:58,022 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-12-02 10:26:58,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2024-12-02 10:26:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:26:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:26:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-12-02 10:26:58,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-12-02 10:26:58,025 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2024-12-02 10:26:58,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2024-12-02 10:26:58,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:26:58,028 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2024-12-02 10:26:58,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-12-02 10:26:58,030 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-12-02 10:26:58,030 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2024-12-02 10:26:58,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-12-02 10:26:58,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:58,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-12-02 10:26:58,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:26:58,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:58,231 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:26:58,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash 15345152, now seen corresponding path program 1 times [2024-12-02 10:26:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:26:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274785843] [2024-12-02 10:26:58,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:58,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:58,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:26:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:58,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:26:58,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:58,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:26:58,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:26:58,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274785843] [2024-12-02 10:26:58,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274785843] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:58,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:58,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:26:58,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431291295] [2024-12-02 10:26:58,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:58,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:26:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:26:58,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:26:58,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:26:58,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-12-02 10:26:58,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-12-02 10:26:58,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:58,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-12-02 10:26:58,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:26:58,798 INFO L124 PetriNetUnfolderBase]: 767/1825 cut-off events. [2024-12-02 10:26:58,798 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 10:26:58,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1825 events. 767/1825 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12630 event pairs, 705 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 951. Up to 1189 conditions per place. [2024-12-02 10:26:58,814 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 52 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2024-12-02 10:26:58,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 350 flow [2024-12-02 10:26:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:26:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:26:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2024-12-02 10:26:58,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 10:26:58,816 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 264 transitions. [2024-12-02 10:26:58,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 350 flow [2024-12-02 10:26:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:26:58,821 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2024-12-02 10:26:58,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-12-02 10:26:58,822 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2024-12-02 10:26:58,822 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2024-12-02 10:26:58,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-12-02 10:26:58,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:58,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:26:58,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:26:59,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:59,023 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:26:59,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1320838570, now seen corresponding path program 1 times [2024-12-02 10:26:59,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:26:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990807256] [2024-12-02 10:26:59,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:59,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:59,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:59,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:26:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:59,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:26:59,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:59,154 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:26:59,155 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:26:59,155 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:26:59,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2024-12-02 10:26:59,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:26:59,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 53 [2024-12-02 10:26:59,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:26:59,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 45 [2024-12-02 10:26:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:59,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:26:59,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:26:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990807256] [2024-12-02 10:26:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990807256] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:59,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:26:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047547048] [2024-12-02 10:26:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:59,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:26:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:26:59,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:26:59,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:26:59,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2024-12-02 10:26:59,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-12-02 10:26:59,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:59,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2024-12-02 10:26:59,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:00,240 INFO L124 PetriNetUnfolderBase]: 1153/2696 cut-off events. [2024-12-02 10:27:00,240 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2024-12-02 10:27:00,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2696 events. 1153/2696 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19803 event pairs, 684 based on Foata normal form. 1/2345 useless extension candidates. Maximal degree in co-relation 4359. Up to 1845 conditions per place. [2024-12-02 10:27:00,254 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 52 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-12-02 10:27:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 352 flow [2024-12-02 10:27:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:27:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:27:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-12-02 10:27:00,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-12-02 10:27:00,257 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 4 states and 319 transitions. [2024-12-02 10:27:00,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 352 flow [2024-12-02 10:27:00,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 110 transitions, 341 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-12-02 10:27:00,262 INFO L231 Difference]: Finished difference. Result has 105 places, 103 transitions, 234 flow [2024-12-02 10:27:00,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=105, PETRI_TRANSITIONS=103} [2024-12-02 10:27:00,263 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -17 predicate places. [2024-12-02 10:27:00,263 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 103 transitions, 234 flow [2024-12-02 10:27:00,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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) [2024-12-02 10:27:00,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:00,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:00,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:27:00,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:00,464 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:00,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1433935613, now seen corresponding path program 1 times [2024-12-02 10:27:00,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:00,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639713407] [2024-12-02 10:27:00,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:00,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:00,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:00,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:00,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:27:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:00,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 10:27:00,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:00,607 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:00,608 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:00,608 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:00,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2024-12-02 10:27:00,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:00,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 45 [2024-12-02 10:27:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:00,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:00,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639713407] [2024-12-02 10:27:00,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639713407] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:00,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:00,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:00,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75864782] [2024-12-02 10:27:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:00,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:00,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:00,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:00,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:01,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-12-02 10:27:01,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-12-02 10:27:01,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:01,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-12-02 10:27:01,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:01,822 INFO L124 PetriNetUnfolderBase]: 1321/2989 cut-off events. [2024-12-02 10:27:01,822 INFO L125 PetriNetUnfolderBase]: For 241/247 co-relation queries the response was YES. [2024-12-02 10:27:01,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2989 events. 1321/2989 cut-off events. For 241/247 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 21664 event pairs, 796 based on Foata normal form. 6/2523 useless extension candidates. Maximal degree in co-relation 2300. Up to 2115 conditions per place. [2024-12-02 10:27:01,834 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 54 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2024-12-02 10:27:01,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 369 flow [2024-12-02 10:27:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:27:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:27:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2024-12-02 10:27:01,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543939393939394 [2024-12-02 10:27:01,837 INFO L175 Difference]: Start difference. First operand has 105 places, 103 transitions, 234 flow. Second operand 5 states and 359 transitions. [2024-12-02 10:27:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 369 flow [2024-12-02 10:27:01,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:27:01,839 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 240 flow [2024-12-02 10:27:01,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2024-12-02 10:27:01,840 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2024-12-02 10:27:01,840 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 240 flow [2024-12-02 10:27:01,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-12-02 10:27:01,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:01,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:01,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:27:02,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:02,042 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:02,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930850, now seen corresponding path program 1 times [2024-12-02 10:27:02,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966549229] [2024-12-02 10:27:02,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:02,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:02,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:27:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:02,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:27:02,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:02,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:02,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:02,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966549229] [2024-12-02 10:27:02,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966549229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:02,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:02,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:27:02,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706767907] [2024-12-02 10:27:02,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:02,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:27:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:02,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:27:02,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:27:02,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2024-12-02 10:27:02,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-12-02 10:27:02,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:02,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2024-12-02 10:27:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:02,642 INFO L124 PetriNetUnfolderBase]: 956/2215 cut-off events. [2024-12-02 10:27:02,642 INFO L125 PetriNetUnfolderBase]: For 67/70 co-relation queries the response was YES. [2024-12-02 10:27:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 2215 events. 956/2215 cut-off events. For 67/70 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 15393 event pairs, 738 based on Foata normal form. 0/2023 useless extension candidates. Maximal degree in co-relation 1648. Up to 1362 conditions per place. [2024-12-02 10:27:02,655 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-12-02 10:27:02,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 362 flow [2024-12-02 10:27:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:27:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:27:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-12-02 10:27:02,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-12-02 10:27:02,657 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 240 flow. Second operand 3 states and 246 transitions. [2024-12-02 10:27:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 362 flow [2024-12-02 10:27:02,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:27:02,660 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 222 flow [2024-12-02 10:27:02,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-12-02 10:27:02,660 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -25 predicate places. [2024-12-02 10:27:02,661 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 222 flow [2024-12-02 10:27:02,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-12-02 10:27:02,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:02,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:02,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:27:02,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:02,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:02,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1081930849, now seen corresponding path program 1 times [2024-12-02 10:27:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:02,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817861697] [2024-12-02 10:27:02,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:02,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:02,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:27:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:02,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:27:02,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:02,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:03,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:03,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817861697] [2024-12-02 10:27:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817861697] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:27:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158540787] [2024-12-02 10:27:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:03,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:27:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:03,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:27:03,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:27:03,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2024-12-02 10:27:03,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2024-12-02 10:27:03,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:03,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2024-12-02 10:27:03,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:03,562 INFO L124 PetriNetUnfolderBase]: 816/1932 cut-off events. [2024-12-02 10:27:03,562 INFO L125 PetriNetUnfolderBase]: For 86/89 co-relation queries the response was YES. [2024-12-02 10:27:03,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 1932 events. 816/1932 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13124 event pairs, 531 based on Foata normal form. 88/1839 useless extension candidates. Maximal degree in co-relation 2812. Up to 992 conditions per place. [2024-12-02 10:27:03,574 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-12-02 10:27:03,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 390 flow [2024-12-02 10:27:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:27:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:27:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-12-02 10:27:03,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-12-02 10:27:03,575 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 222 flow. Second operand 3 states and 261 transitions. [2024-12-02 10:27:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 390 flow [2024-12-02 10:27:03,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:27:03,578 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 235 flow [2024-12-02 10:27:03,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-12-02 10:27:03,579 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-12-02 10:27:03,579 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 235 flow [2024-12-02 10:27:03,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2024-12-02 10:27:03,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:03,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:03,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:27:03,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:03,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:03,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash 899898881, now seen corresponding path program 1 times [2024-12-02 10:27:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:03,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042347871] [2024-12-02 10:27:03,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:03,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:03,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:27:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:03,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:27:03,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:03,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:03,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:03,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:03,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042347871] [2024-12-02 10:27:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042347871] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:03,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:03,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:27:03,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419753369] [2024-12-02 10:27:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:03,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:03,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:03,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:03,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:04,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-12-02 10:27:04,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2024-12-02 10:27:04,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:04,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-12-02 10:27:04,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:04,774 INFO L124 PetriNetUnfolderBase]: 1177/2702 cut-off events. [2024-12-02 10:27:04,775 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-12-02 10:27:04,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 2702 events. 1177/2702 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19247 event pairs, 139 based on Foata normal form. 62/2644 useless extension candidates. Maximal degree in co-relation 3215. Up to 1078 conditions per place. [2024-12-02 10:27:04,782 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 102 selfloop transitions, 15 changer transitions 1/162 dead transitions. [2024-12-02 10:27:04,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 626 flow [2024-12-02 10:27:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:27:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 10:27:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2024-12-02 10:27:04,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-12-02 10:27:04,784 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 235 flow. Second operand 8 states and 594 transitions. [2024-12-02 10:27:04,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 626 flow [2024-12-02 10:27:04,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:27:04,787 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 339 flow [2024-12-02 10:27:04,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-12-02 10:27:04,788 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2024-12-02 10:27:04,788 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 339 flow [2024-12-02 10:27:04,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 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) [2024-12-02 10:27:04,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:04,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:04,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:27:04,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:04,989 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:04,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash 899898882, now seen corresponding path program 1 times [2024-12-02 10:27:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128063116] [2024-12-02 10:27:04,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:04,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:04,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:04,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:27:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:05,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:27:05,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:05,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:05,204 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:05,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128063116] [2024-12-02 10:27:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128063116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:05,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:27:05,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051805274] [2024-12-02 10:27:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:05,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:05,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:05,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:05,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:05,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2024-12-02 10:27:05,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2024-12-02 10:27:05,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:05,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2024-12-02 10:27:05,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:06,263 INFO L124 PetriNetUnfolderBase]: 910/2220 cut-off events. [2024-12-02 10:27:06,263 INFO L125 PetriNetUnfolderBase]: For 974/1060 co-relation queries the response was YES. [2024-12-02 10:27:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2220 events. 910/2220 cut-off events. For 974/1060 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15803 event pairs, 154 based on Foata normal form. 257/2403 useless extension candidates. Maximal degree in co-relation 4082. Up to 1074 conditions per place. [2024-12-02 10:27:06,271 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 89 selfloop transitions, 12 changer transitions 2/154 dead transitions. [2024-12-02 10:27:06,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 653 flow [2024-12-02 10:27:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:27:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:27:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2024-12-02 10:27:06,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5898268398268398 [2024-12-02 10:27:06,273 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 339 flow. Second operand 7 states and 545 transitions. [2024-12-02 10:27:06,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 653 flow [2024-12-02 10:27:06,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 653 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:27:06,279 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 399 flow [2024-12-02 10:27:06,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-12-02 10:27:06,280 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2024-12-02 10:27:06,280 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 399 flow [2024-12-02 10:27:06,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 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) [2024-12-02 10:27:06,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:06,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:06,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:27:06,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:06,481 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:06,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -60742247, now seen corresponding path program 1 times [2024-12-02 10:27:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389750122] [2024-12-02 10:27:06,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:06,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:06,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:06,484 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:06,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:27:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:06,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:27:06,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:06,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:06,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:06,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389750122] [2024-12-02 10:27:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389750122] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:06,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:27:06,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67357145] [2024-12-02 10:27:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:06,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:06,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:06,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:07,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2024-12-02 10:27:07,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2024-12-02 10:27:07,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:07,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2024-12-02 10:27:07,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:07,732 INFO L124 PetriNetUnfolderBase]: 894/2269 cut-off events. [2024-12-02 10:27:07,732 INFO L125 PetriNetUnfolderBase]: For 1895/1984 co-relation queries the response was YES. [2024-12-02 10:27:07,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 2269 events. 894/2269 cut-off events. For 1895/1984 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16528 event pairs, 125 based on Foata normal form. 173/2384 useless extension candidates. Maximal degree in co-relation 4480. Up to 1036 conditions per place. [2024-12-02 10:27:07,740 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 92 selfloop transitions, 16 changer transitions 1/160 dead transitions. [2024-12-02 10:27:07,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 160 transitions, 800 flow [2024-12-02 10:27:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:27:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:27:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2024-12-02 10:27:07,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2024-12-02 10:27:07,743 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 399 flow. Second operand 7 states and 542 transitions. [2024-12-02 10:27:07,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 160 transitions, 800 flow [2024-12-02 10:27:07,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 779 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:27:07,748 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 489 flow [2024-12-02 10:27:07,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-12-02 10:27:07,748 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2024-12-02 10:27:07,749 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 489 flow [2024-12-02 10:27:07,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 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) [2024-12-02 10:27:07,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:07,749 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:07,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:27:07,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:07,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:07,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -60742248, now seen corresponding path program 1 times [2024-12-02 10:27:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:07,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808770709] [2024-12-02 10:27:07,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:07,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:07,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:27:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:08,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:27:08,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:08,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:08,132 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:08,132 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:08,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808770709] [2024-12-02 10:27:08,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808770709] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:08,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:08,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:27:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902648212] [2024-12-02 10:27:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:08,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:08,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:08,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:08,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:08,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-12-02 10:27:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 489 flow. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2024-12-02 10:27:08,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:08,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-12-02 10:27:08,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:09,209 INFO L124 PetriNetUnfolderBase]: 1336/2918 cut-off events. [2024-12-02 10:27:09,209 INFO L125 PetriNetUnfolderBase]: For 3158/3313 co-relation queries the response was YES. [2024-12-02 10:27:09,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 2918 events. 1336/2918 cut-off events. For 3158/3313 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20394 event pairs, 350 based on Foata normal form. 100/2951 useless extension candidates. Maximal degree in co-relation 6071. Up to 1093 conditions per place. [2024-12-02 10:27:09,217 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 108 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-12-02 10:27:09,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 175 transitions, 922 flow [2024-12-02 10:27:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:27:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 10:27:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 593 transitions. [2024-12-02 10:27:09,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5615530303030303 [2024-12-02 10:27:09,218 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 489 flow. Second operand 8 states and 593 transitions. [2024-12-02 10:27:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 175 transitions, 922 flow [2024-12-02 10:27:09,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 175 transitions, 919 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:27:09,224 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 614 flow [2024-12-02 10:27:09,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2024-12-02 10:27:09,225 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2024-12-02 10:27:09,225 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 614 flow [2024-12-02 10:27:09,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2024-12-02 10:27:09,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:09,225 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:09,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:27:09,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:09,426 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:09,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1770422097, now seen corresponding path program 1 times [2024-12-02 10:27:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:09,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799313761] [2024-12-02 10:27:09,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:09,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:09,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:27:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:09,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:27:09,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:09,577 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:09,577 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:09,577 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:09,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2024-12-02 10:27:09,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:09,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 63 [2024-12-02 10:27:09,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:09,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 53 [2024-12-02 10:27:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:09,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:09,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799313761] [2024-12-02 10:27:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799313761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:09,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:09,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:27:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481252379] [2024-12-02 10:27:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:09,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:27:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:09,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:27:09,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:27:10,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2024-12-02 10:27:10,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2024-12-02 10:27:10,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:10,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2024-12-02 10:27:10,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:12,236 INFO L124 PetriNetUnfolderBase]: 2137/4102 cut-off events. [2024-12-02 10:27:12,236 INFO L125 PetriNetUnfolderBase]: For 7155/7483 co-relation queries the response was YES. [2024-12-02 10:27:12,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11226 conditions, 4102 events. 2137/4102 cut-off events. For 7155/7483 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 27872 event pairs, 627 based on Foata normal form. 35/3961 useless extension candidates. Maximal degree in co-relation 10360. Up to 1772 conditions per place. [2024-12-02 10:27:12,247 INFO L140 encePairwiseOnDemand]: 107/132 looper letters, 116 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2024-12-02 10:27:12,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 204 transitions, 1293 flow [2024-12-02 10:27:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:27:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 10:27:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2024-12-02 10:27:12,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691287878787878 [2024-12-02 10:27:12,249 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 614 flow. Second operand 8 states and 601 transitions. [2024-12-02 10:27:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 204 transitions, 1293 flow [2024-12-02 10:27:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 204 transitions, 1280 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:27:12,263 INFO L231 Difference]: Finished difference. Result has 140 places, 154 transitions, 949 flow [2024-12-02 10:27:12,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=140, PETRI_TRANSITIONS=154} [2024-12-02 10:27:12,264 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 18 predicate places. [2024-12-02 10:27:12,264 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 154 transitions, 949 flow [2024-12-02 10:27:12,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2024-12-02 10:27:12,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:12,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:12,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:27:12,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:12,465 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:12,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:12,465 INFO L85 PathProgramCache]: Analyzing trace with hash 925744658, now seen corresponding path program 1 times [2024-12-02 10:27:12,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:12,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775176253] [2024-12-02 10:27:12,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:12,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:12,467 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:12,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:27:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:12,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 10:27:12,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:12,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:12,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-02 10:27:12,784 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 10:27:12,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-12-02 10:27:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:12,800 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:12,800 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775176253] [2024-12-02 10:27:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775176253] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:27:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76116987] [2024-12-02 10:27:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:12,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:27:12,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:12,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:27:12,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:27:13,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 132 [2024-12-02 10:27:13,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 154 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2024-12-02 10:27:13,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:13,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 132 [2024-12-02 10:27:13,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:14,545 INFO L124 PetriNetUnfolderBase]: 2217/4570 cut-off events. [2024-12-02 10:27:14,545 INFO L125 PetriNetUnfolderBase]: For 9259/9524 co-relation queries the response was YES. [2024-12-02 10:27:14,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14049 conditions, 4570 events. 2217/4570 cut-off events. For 9259/9524 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 34020 event pairs, 388 based on Foata normal form. 71/4569 useless extension candidates. Maximal degree in co-relation 12651. Up to 1922 conditions per place. [2024-12-02 10:27:14,560 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 156 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2024-12-02 10:27:14,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 232 transitions, 1612 flow [2024-12-02 10:27:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:27:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 10:27:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 602 transitions. [2024-12-02 10:27:14,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5067340067340067 [2024-12-02 10:27:14,562 INFO L175 Difference]: Start difference. First operand has 140 places, 154 transitions, 949 flow. Second operand 9 states and 602 transitions. [2024-12-02 10:27:14,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 232 transitions, 1612 flow [2024-12-02 10:27:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 232 transitions, 1583 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-12-02 10:27:14,588 INFO L231 Difference]: Finished difference. Result has 144 places, 152 transitions, 968 flow [2024-12-02 10:27:14,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=144, PETRI_TRANSITIONS=152} [2024-12-02 10:27:14,588 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 22 predicate places. [2024-12-02 10:27:14,588 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 152 transitions, 968 flow [2024-12-02 10:27:14,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 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) [2024-12-02 10:27:14,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:14,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:14,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:27:14,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:14,789 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:14,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1413477800, now seen corresponding path program 1 times [2024-12-02 10:27:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699267939] [2024-12-02 10:27:14,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:14,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:14,792 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:14,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:27:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:14,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 10:27:14,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:14,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:14,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:15,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-02 10:27:15,106 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 10:27:15,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-12-02 10:27:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:15,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:15,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699267939] [2024-12-02 10:27:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699267939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:15,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:15,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035815173] [2024-12-02 10:27:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:15,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:27:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:15,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:27:15,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:27:15,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 132 [2024-12-02 10:27:15,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 152 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2024-12-02 10:27:15,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:15,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 132 [2024-12-02 10:27:15,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:16,972 INFO L124 PetriNetUnfolderBase]: 2531/5166 cut-off events. [2024-12-02 10:27:16,972 INFO L125 PetriNetUnfolderBase]: For 11508/11866 co-relation queries the response was YES. [2024-12-02 10:27:16,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15902 conditions, 5166 events. 2531/5166 cut-off events. For 11508/11866 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39588 event pairs, 711 based on Foata normal form. 90/5189 useless extension candidates. Maximal degree in co-relation 13239. Up to 1928 conditions per place. [2024-12-02 10:27:16,992 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 154 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2024-12-02 10:27:16,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 230 transitions, 1636 flow [2024-12-02 10:27:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:27:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 10:27:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 618 transitions. [2024-12-02 10:27:16,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2024-12-02 10:27:16,995 INFO L175 Difference]: Start difference. First operand has 144 places, 152 transitions, 968 flow. Second operand 9 states and 618 transitions. [2024-12-02 10:27:16,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 230 transitions, 1636 flow [2024-12-02 10:27:17,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 230 transitions, 1580 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 10:27:17,040 INFO L231 Difference]: Finished difference. Result has 142 places, 150 transitions, 966 flow [2024-12-02 10:27:17,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=966, PETRI_PLACES=142, PETRI_TRANSITIONS=150} [2024-12-02 10:27:17,040 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 20 predicate places. [2024-12-02 10:27:17,040 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 150 transitions, 966 flow [2024-12-02 10:27:17,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.666666666666664) internal successors, (340), 6 states have internal predecessors, (340), 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) [2024-12-02 10:27:17,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:17,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:17,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 10:27:17,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:17,241 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:17,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 386742127, now seen corresponding path program 1 times [2024-12-02 10:27:17,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:17,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906076542] [2024-12-02 10:27:17,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:17,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:17,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:17,244 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:17,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 10:27:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:17,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:27:17,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:17,410 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:17,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:17,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:17,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 41 [2024-12-02 10:27:17,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:17,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2024-12-02 10:27:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:17,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:17,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:17,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906076542] [2024-12-02 10:27:17,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906076542] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:17,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996364154] [2024-12-02 10:27:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:17,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:17,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:17,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:17,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:17,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-12-02 10:27:17,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 150 transitions, 966 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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) [2024-12-02 10:27:17,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:17,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-12-02 10:27:17,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:19,790 INFO L124 PetriNetUnfolderBase]: 2959/5700 cut-off events. [2024-12-02 10:27:19,790 INFO L125 PetriNetUnfolderBase]: For 13354/13871 co-relation queries the response was YES. [2024-12-02 10:27:19,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18850 conditions, 5700 events. 2959/5700 cut-off events. For 13354/13871 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 41800 event pairs, 1047 based on Foata normal form. 202/5842 useless extension candidates. Maximal degree in co-relation 16161. Up to 2612 conditions per place. [2024-12-02 10:27:19,811 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 122 selfloop transitions, 72 changer transitions 0/229 dead transitions. [2024-12-02 10:27:19,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 229 transitions, 1803 flow [2024-12-02 10:27:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:27:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:27:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2024-12-02 10:27:19,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2024-12-02 10:27:19,812 INFO L175 Difference]: Start difference. First operand has 142 places, 150 transitions, 966 flow. Second operand 7 states and 536 transitions. [2024-12-02 10:27:19,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 229 transitions, 1803 flow [2024-12-02 10:27:19,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 229 transitions, 1752 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-12-02 10:27:19,855 INFO L231 Difference]: Finished difference. Result has 147 places, 179 transitions, 1449 flow [2024-12-02 10:27:19,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=147, PETRI_TRANSITIONS=179} [2024-12-02 10:27:19,856 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 25 predicate places. [2024-12-02 10:27:19,856 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 179 transitions, 1449 flow [2024-12-02 10:27:19,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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) [2024-12-02 10:27:19,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:19,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:19,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 10:27:20,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:20,057 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:20,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash -896002718, now seen corresponding path program 1 times [2024-12-02 10:27:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35304232] [2024-12-02 10:27:20,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:20,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:20,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:20,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:20,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 10:27:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:20,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:27:20,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:20,331 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_81| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_81|)))) is different from true [2024-12-02 10:27:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:20,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:20,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:20,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35304232] [2024-12-02 10:27:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35304232] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:20,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:27:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114815094] [2024-12-02 10:27:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:20,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:20,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:20,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-12-02 10:27:20,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2024-12-02 10:27:20,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 179 transitions, 1449 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2024-12-02 10:27:20,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:20,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2024-12-02 10:27:20,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:21,737 INFO L124 PetriNetUnfolderBase]: 4240/7754 cut-off events. [2024-12-02 10:27:21,737 INFO L125 PetriNetUnfolderBase]: For 22946/22950 co-relation queries the response was YES. [2024-12-02 10:27:21,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29214 conditions, 7754 events. 4240/7754 cut-off events. For 22946/22950 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57286 event pairs, 1790 based on Foata normal form. 1/7732 useless extension candidates. Maximal degree in co-relation 24488. Up to 3737 conditions per place. [2024-12-02 10:27:21,769 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 163 selfloop transitions, 37 changer transitions 4/229 dead transitions. [2024-12-02 10:27:21,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 229 transitions, 2121 flow [2024-12-02 10:27:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:27:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:27:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-12-02 10:27:21,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-12-02 10:27:21,771 INFO L175 Difference]: Start difference. First operand has 147 places, 179 transitions, 1449 flow. Second operand 5 states and 310 transitions. [2024-12-02 10:27:21,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 229 transitions, 2121 flow [2024-12-02 10:27:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 229 transitions, 2105 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-12-02 10:27:21,945 INFO L231 Difference]: Finished difference. Result has 154 places, 197 transitions, 1719 flow [2024-12-02 10:27:21,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1719, PETRI_PLACES=154, PETRI_TRANSITIONS=197} [2024-12-02 10:27:21,945 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 32 predicate places. [2024-12-02 10:27:21,945 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 197 transitions, 1719 flow [2024-12-02 10:27:21,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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) [2024-12-02 10:27:21,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:21,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:21,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 10:27:22,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:22,146 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:22,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1625776092, now seen corresponding path program 1 times [2024-12-02 10:27:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042694977] [2024-12-02 10:27:22,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:22,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:22,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:22,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:22,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 10:27:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:22,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:27:22,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:22,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:22,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:22,345 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042694977] [2024-12-02 10:27:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042694977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:27:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583132040] [2024-12-02 10:27:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:27:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:22,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:27:22,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:27:22,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-12-02 10:27:22,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 197 transitions, 1719 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-12-02 10:27:22,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:22,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-12-02 10:27:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:23,574 INFO L124 PetriNetUnfolderBase]: 2944/5684 cut-off events. [2024-12-02 10:27:23,574 INFO L125 PetriNetUnfolderBase]: For 24260/24797 co-relation queries the response was YES. [2024-12-02 10:27:23,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24453 conditions, 5684 events. 2944/5684 cut-off events. For 24260/24797 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42955 event pairs, 1440 based on Foata normal form. 124/5614 useless extension candidates. Maximal degree in co-relation 20608. Up to 3902 conditions per place. [2024-12-02 10:27:23,598 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2024-12-02 10:27:23,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 203 transitions, 1985 flow [2024-12-02 10:27:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:27:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:27:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-12-02 10:27:23,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-12-02 10:27:23,599 INFO L175 Difference]: Start difference. First operand has 154 places, 197 transitions, 1719 flow. Second operand 3 states and 257 transitions. [2024-12-02 10:27:23,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 203 transitions, 1985 flow [2024-12-02 10:27:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 203 transitions, 1900 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-12-02 10:27:23,688 INFO L231 Difference]: Finished difference. Result has 150 places, 195 transitions, 1640 flow [2024-12-02 10:27:23,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1640, PETRI_PLACES=150, PETRI_TRANSITIONS=195} [2024-12-02 10:27:23,689 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 28 predicate places. [2024-12-02 10:27:23,689 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 195 transitions, 1640 flow [2024-12-02 10:27:23,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-12-02 10:27:23,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:23,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:23,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 10:27:23,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:23,890 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:23,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1330151493, now seen corresponding path program 1 times [2024-12-02 10:27:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813559186] [2024-12-02 10:27:23,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:23,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:23,893 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:23,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 10:27:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:24,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:27:24,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:24,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:24,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:24,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813559186] [2024-12-02 10:27:24,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813559186] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:24,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:24,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:27:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474056230] [2024-12-02 10:27:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:27:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:24,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:27:24,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:27:24,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2024-12-02 10:27:24,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 195 transitions, 1640 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-12-02 10:27:24,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:24,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2024-12-02 10:27:24,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:24,920 INFO L124 PetriNetUnfolderBase]: 2944/5676 cut-off events. [2024-12-02 10:27:24,920 INFO L125 PetriNetUnfolderBase]: For 22536/23073 co-relation queries the response was YES. [2024-12-02 10:27:24,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24059 conditions, 5676 events. 2944/5676 cut-off events. For 22536/23073 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 42873 event pairs, 1440 based on Foata normal form. 124/5606 useless extension candidates. Maximal degree in co-relation 23373. Up to 3902 conditions per place. [2024-12-02 10:27:24,946 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2024-12-02 10:27:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 201 transitions, 1906 flow [2024-12-02 10:27:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:27:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:27:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-12-02 10:27:24,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2024-12-02 10:27:24,948 INFO L175 Difference]: Start difference. First operand has 150 places, 195 transitions, 1640 flow. Second operand 3 states and 257 transitions. [2024-12-02 10:27:24,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 201 transitions, 1906 flow [2024-12-02 10:27:25,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 201 transitions, 1896 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:27:25,030 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 1636 flow [2024-12-02 10:27:25,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1636, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-12-02 10:27:25,030 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2024-12-02 10:27:25,030 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 1636 flow [2024-12-02 10:27:25,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-12-02 10:27:25,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:25,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:25,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 10:27:25,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:25,231 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:25,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash 803572441, now seen corresponding path program 1 times [2024-12-02 10:27:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058106102] [2024-12-02 10:27:25,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:25,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:25,234 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:25,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 10:27:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:25,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:27:25,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:25,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:25,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:25,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058106102] [2024-12-02 10:27:25,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058106102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:25,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:25,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:27:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973145171] [2024-12-02 10:27:25,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:25,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:27:25,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:25,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:27:25,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:27:25,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2024-12-02 10:27:25,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 1636 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2024-12-02 10:27:25,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:25,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2024-12-02 10:27:25,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:25,625 INFO L124 PetriNetUnfolderBase]: 265/536 cut-off events. [2024-12-02 10:27:25,625 INFO L125 PetriNetUnfolderBase]: For 1586/1640 co-relation queries the response was YES. [2024-12-02 10:27:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 536 events. 265/536 cut-off events. For 1586/1640 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2171 event pairs, 49 based on Foata normal form. 50/566 useless extension candidates. Maximal degree in co-relation 2145. Up to 269 conditions per place. [2024-12-02 10:27:25,627 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-12-02 10:27:25,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 100 transitions, 757 flow [2024-12-02 10:27:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:27:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:27:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-12-02 10:27:25,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-12-02 10:27:25,628 INFO L175 Difference]: Start difference. First operand has 148 places, 193 transitions, 1636 flow. Second operand 4 states and 335 transitions. [2024-12-02 10:27:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 100 transitions, 757 flow [2024-12-02 10:27:25,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 500 flow, removed 26 selfloop flow, removed 41 redundant places. [2024-12-02 10:27:25,632 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 308 flow [2024-12-02 10:27:25,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-12-02 10:27:25,632 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2024-12-02 10:27:25,633 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 308 flow [2024-12-02 10:27:25,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 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) [2024-12-02 10:27:25,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:25,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:25,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 10:27:25,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:25,833 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:25,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 104042188, now seen corresponding path program 1 times [2024-12-02 10:27:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089727910] [2024-12-02 10:27:25,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:25,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:25,836 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:25,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 10:27:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:26,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:27:26,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:26,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 11 [2024-12-02 10:27:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:26,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:26,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089727910] [2024-12-02 10:27:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089727910] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821150925] [2024-12-02 10:27:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:26,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:26,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:26,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:26,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-12-02 10:27:26,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2024-12-02 10:27:26,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:26,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-12-02 10:27:26,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:26,702 INFO L124 PetriNetUnfolderBase]: 322/727 cut-off events. [2024-12-02 10:27:26,702 INFO L125 PetriNetUnfolderBase]: For 1011/1013 co-relation queries the response was YES. [2024-12-02 10:27:26,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 727 events. 322/727 cut-off events. For 1011/1013 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3571 event pairs, 44 based on Foata normal form. 12/732 useless extension candidates. Maximal degree in co-relation 2087. Up to 283 conditions per place. [2024-12-02 10:27:26,705 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 83 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2024-12-02 10:27:26,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 133 transitions, 771 flow [2024-12-02 10:27:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:27:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:27:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 569 transitions. [2024-12-02 10:27:26,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6158008658008658 [2024-12-02 10:27:26,707 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 308 flow. Second operand 7 states and 569 transitions. [2024-12-02 10:27:26,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 133 transitions, 771 flow [2024-12-02 10:27:26,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 723 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:27:26,709 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 405 flow [2024-12-02 10:27:26,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-12-02 10:27:26,710 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -26 predicate places. [2024-12-02 10:27:26,710 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 405 flow [2024-12-02 10:27:26,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2024-12-02 10:27:26,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:26,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:26,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 10:27:26,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:26,910 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:26,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 206628548, now seen corresponding path program 2 times [2024-12-02 10:27:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:26,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196309593] [2024-12-02 10:27:26,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:27:26,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:26,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:26,913 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:26,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 10:27:27,110 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:27:27,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:27,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:27:27,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:27,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:27,188 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-12-02 10:27:27,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-12-02 10:27:27,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-12-02 10:27:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:27,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:27,231 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196309593] [2024-12-02 10:27:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196309593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:27:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241738925] [2024-12-02 10:27:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:27,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:27:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:27,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:27:27,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:27:27,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2024-12-02 10:27:27,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2024-12-02 10:27:27,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:27,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2024-12-02 10:27:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:27,639 INFO L124 PetriNetUnfolderBase]: 317/670 cut-off events. [2024-12-02 10:27:27,639 INFO L125 PetriNetUnfolderBase]: For 994/1001 co-relation queries the response was YES. [2024-12-02 10:27:27,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 670 events. 317/670 cut-off events. For 994/1001 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3071 event pairs, 152 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 2114. Up to 395 conditions per place. [2024-12-02 10:27:27,641 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 76 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2024-12-02 10:27:27,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 660 flow [2024-12-02 10:27:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:27:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:27:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-12-02 10:27:27,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2024-12-02 10:27:27,642 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 405 flow. Second operand 4 states and 291 transitions. [2024-12-02 10:27:27,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 660 flow [2024-12-02 10:27:27,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 111 transitions, 648 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-12-02 10:27:27,644 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 411 flow [2024-12-02 10:27:27,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-12-02 10:27:27,645 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2024-12-02 10:27:27,645 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 411 flow [2024-12-02 10:27:27,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 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) [2024-12-02 10:27:27,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:27,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:27,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 10:27:27,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:27,845 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:27,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash 969933495, now seen corresponding path program 1 times [2024-12-02 10:27:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:27,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487834082] [2024-12-02 10:27:27,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:27,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:27,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:27,848 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:27,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 10:27:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:28,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:27:28,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:28,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 10:27:28,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 10:27:28,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:28,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-02 10:27:28,296 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 10:27:28,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-12-02 10:27:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:28,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:28,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487834082] [2024-12-02 10:27:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487834082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:27:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856224788] [2024-12-02 10:27:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:28,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:27:28,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:28,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:27:28,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:27:28,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:27:28,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2024-12-02 10:27:28,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:28,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:27:28,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:28,742 INFO L124 PetriNetUnfolderBase]: 317/664 cut-off events. [2024-12-02 10:27:28,742 INFO L125 PetriNetUnfolderBase]: For 1004/1011 co-relation queries the response was YES. [2024-12-02 10:27:28,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 664 events. 317/664 cut-off events. For 1004/1011 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3006 event pairs, 223 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 2141. Up to 573 conditions per place. [2024-12-02 10:27:28,744 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 63 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-12-02 10:27:28,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 533 flow [2024-12-02 10:27:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:27:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:27:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-12-02 10:27:28,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-12-02 10:27:28,745 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 411 flow. Second operand 4 states and 270 transitions. [2024-12-02 10:27:28,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 533 flow [2024-12-02 10:27:28,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:27:28,747 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 393 flow [2024-12-02 10:27:28,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=393, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-12-02 10:27:28,748 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -30 predicate places. [2024-12-02 10:27:28,748 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 393 flow [2024-12-02 10:27:28,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2024-12-02 10:27:28,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:28,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:28,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 10:27:28,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:28,949 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:28,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1068695243, now seen corresponding path program 1 times [2024-12-02 10:27:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:28,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623190689] [2024-12-02 10:27:28,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:27:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:28,951 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:28,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 10:27:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:27:29,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 10:27:29,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:29,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:29,395 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:29,395 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:29,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 33 [2024-12-02 10:27:29,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:29,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 45 [2024-12-02 10:27:29,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:29,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 45 [2024-12-02 10:27:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:29,618 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:29,618 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:29,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623190689] [2024-12-02 10:27:29,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623190689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:29,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:29,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:27:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343314246] [2024-12-02 10:27:29,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:29,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:27:29,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:29,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:27:29,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:27:30,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2024-12-02 10:27:30,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 393 flow. Second operand has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 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) [2024-12-02 10:27:30,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2024-12-02 10:27:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:31,980 INFO L124 PetriNetUnfolderBase]: 474/978 cut-off events. [2024-12-02 10:27:31,980 INFO L125 PetriNetUnfolderBase]: For 1226/1228 co-relation queries the response was YES. [2024-12-02 10:27:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 978 events. 474/978 cut-off events. For 1226/1228 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4814 event pairs, 58 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 3000. Up to 260 conditions per place. [2024-12-02 10:27:31,983 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 123 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2024-12-02 10:27:31,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 167 transitions, 1087 flow [2024-12-02 10:27:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:27:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 10:27:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 821 transitions. [2024-12-02 10:27:31,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183080808080808 [2024-12-02 10:27:31,984 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 393 flow. Second operand 12 states and 821 transitions. [2024-12-02 10:27:31,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 167 transitions, 1087 flow [2024-12-02 10:27:31,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 167 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:27:31,987 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 525 flow [2024-12-02 10:27:31,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=525, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-12-02 10:27:31,987 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -19 predicate places. [2024-12-02 10:27:31,987 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 525 flow [2024-12-02 10:27:31,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 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) [2024-12-02 10:27:31,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:31,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:31,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 10:27:32,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:32,188 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:32,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash -543443429, now seen corresponding path program 2 times [2024-12-02 10:27:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:32,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598806094] [2024-12-02 10:27:32,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:27:32,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:32,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:32,192 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:32,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 10:27:32,388 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:27:32,389 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:32,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:27:32,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:32,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 9 [2024-12-02 10:27:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:32,450 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:32,450 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:32,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598806094] [2024-12-02 10:27:32,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598806094] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:32,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:32,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579134255] [2024-12-02 10:27:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:32,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:32,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:32,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:32,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-12-02 10:27:32,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-12-02 10:27:32,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:32,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-12-02 10:27:32,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:33,251 INFO L124 PetriNetUnfolderBase]: 526/1229 cut-off events. [2024-12-02 10:27:33,251 INFO L125 PetriNetUnfolderBase]: For 2762/2771 co-relation queries the response was YES. [2024-12-02 10:27:33,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 1229 events. 526/1229 cut-off events. For 2762/2771 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7102 event pairs, 107 based on Foata normal form. 21/1244 useless extension candidates. Maximal degree in co-relation 4062. Up to 480 conditions per place. [2024-12-02 10:27:33,255 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 112 selfloop transitions, 23 changer transitions 0/163 dead transitions. [2024-12-02 10:27:33,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 163 transitions, 1139 flow [2024-12-02 10:27:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:27:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:27:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2024-12-02 10:27:33,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6385281385281385 [2024-12-02 10:27:33,256 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 525 flow. Second operand 7 states and 590 transitions. [2024-12-02 10:27:33,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 163 transitions, 1139 flow [2024-12-02 10:27:33,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 1071 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-12-02 10:27:33,263 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 629 flow [2024-12-02 10:27:33,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-12-02 10:27:33,263 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2024-12-02 10:27:33,263 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 629 flow [2024-12-02 10:27:33,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-12-02 10:27:33,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:33,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:33,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 10:27:33,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:33,464 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:33,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:33,465 INFO L85 PathProgramCache]: Analyzing trace with hash 881306037, now seen corresponding path program 3 times [2024-12-02 10:27:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77468867] [2024-12-02 10:27:33,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 10:27:33,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:33,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:33,467 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:33,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 10:27:33,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 10:27:33,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:33,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:27:33,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:33,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 9 [2024-12-02 10:27:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:33,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:33,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77468867] [2024-12-02 10:27:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77468867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:33,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:33,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:27:33,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756970149] [2024-12-02 10:27:33,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:33,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:27:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:33,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:27:33,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:27:33,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2024-12-02 10:27:33,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 106 transitions, 629 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-12-02 10:27:33,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:27:33,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2024-12-02 10:27:33,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:27:34,284 INFO L124 PetriNetUnfolderBase]: 338/872 cut-off events. [2024-12-02 10:27:34,284 INFO L125 PetriNetUnfolderBase]: For 2377/2384 co-relation queries the response was YES. [2024-12-02 10:27:34,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3069 conditions, 872 events. 338/872 cut-off events. For 2377/2384 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4499 event pairs, 90 based on Foata normal form. 21/884 useless extension candidates. Maximal degree in co-relation 3050. Up to 258 conditions per place. [2024-12-02 10:27:34,287 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 103 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-12-02 10:27:34,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 154 transitions, 1104 flow [2024-12-02 10:27:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:27:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:27:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2024-12-02 10:27:34,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2024-12-02 10:27:34,288 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 629 flow. Second operand 6 states and 510 transitions. [2024-12-02 10:27:34,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 154 transitions, 1104 flow [2024-12-02 10:27:34,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 154 transitions, 1032 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-12-02 10:27:34,293 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 651 flow [2024-12-02 10:27:34,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2024-12-02 10:27:34,293 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2024-12-02 10:27:34,293 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 651 flow [2024-12-02 10:27:34,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2024-12-02 10:27:34,294 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:27:34,294 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:27:34,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 10:27:34,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:34,494 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:27:34,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:27:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1868544369, now seen corresponding path program 4 times [2024-12-02 10:27:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:27:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265402440] [2024-12-02 10:27:34,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 10:27:34,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:27:34,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:27:34,497 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:27:34,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 10:27:34,724 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 10:27:34,725 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:27:34,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 10:27:34,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:27:34,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:34,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:34,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:27:34,957 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:34,958 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:27:34,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 33 [2024-12-02 10:27:35,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:35,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2024-12-02 10:27:37,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:27:37,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 63 [2024-12-02 10:27:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:27:37,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:27:37,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:27:37,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265402440] [2024-12-02 10:27:37,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265402440] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:27:37,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:27:37,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:27:37,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621264087] [2024-12-02 10:27:37,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:27:37,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:27:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:27:37,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:27:37,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2024-12-02 10:27:40,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:43,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:46,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:49,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:52,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:55,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:27:57,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:00,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:02,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:05,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:08,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:12,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:15,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:18,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:21,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:24,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:27,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:30,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:33,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:36,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:39,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:42,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:45,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:49,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:52,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:55,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:28:58,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:01,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:05,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:08,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:11,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:14,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:18,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:21,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:24,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:24,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 132 [2024-12-02 10:29:24,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 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) [2024-12-02 10:29:24,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:29:24,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 132 [2024-12-02 10:29:24,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:29:28,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:36,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:39,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:42,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:50,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:29:57,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:00,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:03,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:06,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:10,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:14,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:24,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:27,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:30:28,632 INFO L124 PetriNetUnfolderBase]: 466/997 cut-off events. [2024-12-02 10:30:28,633 INFO L125 PetriNetUnfolderBase]: For 3223/3227 co-relation queries the response was YES. [2024-12-02 10:30:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 997 events. 466/997 cut-off events. For 3223/3227 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4698 event pairs, 23 based on Foata normal form. 6/999 useless extension candidates. Maximal degree in co-relation 3663. Up to 284 conditions per place. [2024-12-02 10:30:28,636 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 127 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-12-02 10:30:28,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1458 flow [2024-12-02 10:30:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 10:30:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 10:30:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 542 transitions. [2024-12-02 10:30:28,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29329004329004327 [2024-12-02 10:30:28,637 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 651 flow. Second operand 14 states and 542 transitions. [2024-12-02 10:30:28,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1458 flow [2024-12-02 10:30:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1432 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-12-02 10:30:28,644 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 742 flow [2024-12-02 10:30:28,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=742, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-12-02 10:30:28,644 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -2 predicate places. [2024-12-02 10:30:28,644 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 742 flow [2024-12-02 10:30:28,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 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) [2024-12-02 10:30:28,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:30:28,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:30:28,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-12-02 10:30:28,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:28,845 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:30:28,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1646893525, now seen corresponding path program 1 times [2024-12-02 10:30:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:30:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75161798] [2024-12-02 10:30:28,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:30:28,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:28,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:28,847 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:28,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 10:30:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:30:29,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:30:29,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:29,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:30:29,534 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:29,535 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:29,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-12-02 10:30:29,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-12-02 10:30:29,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-12-02 10:30:30,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:30,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:30,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:30,122 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:30,122 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:30,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:30,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-12-02 10:30:30,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-12-02 10:30:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:30,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:30:30,415 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:30:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75161798] [2024-12-02 10:30:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75161798] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:30:30,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:30:30,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:30:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298772899] [2024-12-02 10:30:30,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:30:30,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:30:30,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:30:30,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:30:30,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:30:33,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:30:33,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 742 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:33,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:30:33,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:30:33,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:30:38,121 INFO L124 PetriNetUnfolderBase]: 550/1187 cut-off events. [2024-12-02 10:30:38,121 INFO L125 PetriNetUnfolderBase]: For 4249/4251 co-relation queries the response was YES. [2024-12-02 10:30:38,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 1187 events. 550/1187 cut-off events. For 4249/4251 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5894 event pairs, 106 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 4542. Up to 473 conditions per place. [2024-12-02 10:30:38,125 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 159 selfloop transitions, 68 changer transitions 0/233 dead transitions. [2024-12-02 10:30:38,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 233 transitions, 2060 flow [2024-12-02 10:30:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:30:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-12-02 10:30:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1460 transitions. [2024-12-02 10:30:38,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48089591567852435 [2024-12-02 10:30:38,128 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 742 flow. Second operand 23 states and 1460 transitions. [2024-12-02 10:30:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 233 transitions, 2060 flow [2024-12-02 10:30:38,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 233 transitions, 1948 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-12-02 10:30:38,138 INFO L231 Difference]: Finished difference. Result has 145 places, 150 transitions, 1281 flow [2024-12-02 10:30:38,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1281, PETRI_PLACES=145, PETRI_TRANSITIONS=150} [2024-12-02 10:30:38,138 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2024-12-02 10:30:38,138 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 150 transitions, 1281 flow [2024-12-02 10:30:38,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:38,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:30:38,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:30:38,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 10:30:38,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:38,339 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:30:38,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1177024455, now seen corresponding path program 2 times [2024-12-02 10:30:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:30:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162991689] [2024-12-02 10:30:38,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:30:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:38,342 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:38,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 10:30:38,547 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:30:38,547 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:30:38,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:30:38,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:38,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:30:38,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:38,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:38,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-12-02 10:30:39,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-12-02 10:30:39,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-12-02 10:30:39,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:39,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:39,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:39,706 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:39,706 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:39,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:39,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-12-02 10:30:39,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:39,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-12-02 10:30:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:39,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:30:39,933 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:30:39,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162991689] [2024-12-02 10:30:39,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162991689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:30:39,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:30:39,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:30:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723825069] [2024-12-02 10:30:39,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:30:39,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:30:39,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:30:39,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:30:39,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:30:43,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:30:43,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 150 transitions, 1281 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:43,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:30:43,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:30:43,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:30:48,321 INFO L124 PetriNetUnfolderBase]: 631/1360 cut-off events. [2024-12-02 10:30:48,321 INFO L125 PetriNetUnfolderBase]: For 4948/4950 co-relation queries the response was YES. [2024-12-02 10:30:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5606 conditions, 1360 events. 631/1360 cut-off events. For 4948/4950 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7107 event pairs, 88 based on Foata normal form. 3/1363 useless extension candidates. Maximal degree in co-relation 5575. Up to 595 conditions per place. [2024-12-02 10:30:48,326 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 176 selfloop transitions, 79 changer transitions 0/261 dead transitions. [2024-12-02 10:30:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 261 transitions, 2564 flow [2024-12-02 10:30:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 10:30:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-12-02 10:30:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1510 transitions. [2024-12-02 10:30:48,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47664141414141414 [2024-12-02 10:30:48,329 INFO L175 Difference]: Start difference. First operand has 145 places, 150 transitions, 1281 flow. Second operand 24 states and 1510 transitions. [2024-12-02 10:30:48,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 261 transitions, 2564 flow [2024-12-02 10:30:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 261 transitions, 2523 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-12-02 10:30:48,344 INFO L231 Difference]: Finished difference. Result has 175 places, 174 transitions, 1709 flow [2024-12-02 10:30:48,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1709, PETRI_PLACES=175, PETRI_TRANSITIONS=174} [2024-12-02 10:30:48,345 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 53 predicate places. [2024-12-02 10:30:48,345 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 174 transitions, 1709 flow [2024-12-02 10:30:48,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:48,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:30:48,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:30:48,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 10:30:48,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:48,546 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:30:48,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1170991869, now seen corresponding path program 3 times [2024-12-02 10:30:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:30:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304544923] [2024-12-02 10:30:48,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 10:30:48,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:48,549 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:48,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 10:30:48,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 10:30:48,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:30:48,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:30:48,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:48,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:30:49,170 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:49,170 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:49,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-12-02 10:30:49,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-12-02 10:30:49,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-12-02 10:30:49,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:49,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:49,836 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:49,837 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:49,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:49,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-12-02 10:30:50,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:50,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-12-02 10:30:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:30:50,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:30:50,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:30:50,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304544923] [2024-12-02 10:30:50,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304544923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:30:50,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:30:50,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:30:50,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663679288] [2024-12-02 10:30:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:30:50,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:30:50,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:30:50,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:30:50,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:30:53,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:30:53,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 174 transitions, 1709 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:53,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:30:53,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:30:53,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:30:58,148 INFO L124 PetriNetUnfolderBase]: 709/1529 cut-off events. [2024-12-02 10:30:58,148 INFO L125 PetriNetUnfolderBase]: For 6695/6697 co-relation queries the response was YES. [2024-12-02 10:30:58,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1529 events. 709/1529 cut-off events. For 6695/6697 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8263 event pairs, 80 based on Foata normal form. 3/1532 useless extension candidates. Maximal degree in co-relation 6737. Up to 563 conditions per place. [2024-12-02 10:30:58,155 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 183 selfloop transitions, 88 changer transitions 0/277 dead transitions. [2024-12-02 10:30:58,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 277 transitions, 2959 flow [2024-12-02 10:30:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:30:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-12-02 10:30:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1454 transitions. [2024-12-02 10:30:58,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47891963109354413 [2024-12-02 10:30:58,157 INFO L175 Difference]: Start difference. First operand has 175 places, 174 transitions, 1709 flow. Second operand 23 states and 1454 transitions. [2024-12-02 10:30:58,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 277 transitions, 2959 flow [2024-12-02 10:30:58,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 277 transitions, 2826 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-12-02 10:30:58,178 INFO L231 Difference]: Finished difference. Result has 196 places, 187 transitions, 1941 flow [2024-12-02 10:30:58,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1941, PETRI_PLACES=196, PETRI_TRANSITIONS=187} [2024-12-02 10:30:58,179 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 74 predicate places. [2024-12-02 10:30:58,179 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 187 transitions, 1941 flow [2024-12-02 10:30:58,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:30:58,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:30:58,180 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:30:58,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 10:30:58,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:58,380 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:30:58,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:30:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1644806327, now seen corresponding path program 4 times [2024-12-02 10:30:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:30:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838073641] [2024-12-02 10:30:58,381 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 10:30:58,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:30:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:30:58,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:30:58,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 10:30:58,651 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 10:30:58,651 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:30:58,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:30:58,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:30:58,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:30:59,087 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:59,088 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:59,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-12-02 10:30:59,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-12-02 10:30:59,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-12-02 10:30:59,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:59,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:59,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:30:59,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:59,727 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:30:59,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:30:59,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-12-02 10:31:00,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:00,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-12-02 10:31:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:00,034 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:00,034 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:00,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838073641] [2024-12-02 10:31:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838073641] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:00,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:00,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025479386] [2024-12-02 10:31:00,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:00,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:00,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:00,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:00,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:02,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:02,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 187 transitions, 1941 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:02,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:02,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:02,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:07,058 INFO L124 PetriNetUnfolderBase]: 709/1522 cut-off events. [2024-12-02 10:31:07,058 INFO L125 PetriNetUnfolderBase]: For 7758/7760 co-relation queries the response was YES. [2024-12-02 10:31:07,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1522 events. 709/1522 cut-off events. For 7758/7760 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8234 event pairs, 162 based on Foata normal form. 3/1525 useless extension candidates. Maximal degree in co-relation 7033. Up to 700 conditions per place. [2024-12-02 10:31:07,066 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 188 selfloop transitions, 87 changer transitions 0/281 dead transitions. [2024-12-02 10:31:07,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 281 transitions, 3180 flow [2024-12-02 10:31:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:31:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-12-02 10:31:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1450 transitions. [2024-12-02 10:31:07,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4776021080368906 [2024-12-02 10:31:07,068 INFO L175 Difference]: Start difference. First operand has 196 places, 187 transitions, 1941 flow. Second operand 23 states and 1450 transitions. [2024-12-02 10:31:07,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 281 transitions, 3180 flow [2024-12-02 10:31:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 281 transitions, 2981 flow, removed 24 selfloop flow, removed 14 redundant places. [2024-12-02 10:31:07,090 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 2206 flow [2024-12-02 10:31:07,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2206, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2024-12-02 10:31:07,090 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 92 predicate places. [2024-12-02 10:31:07,090 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 2206 flow [2024-12-02 10:31:07,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:07,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:31:07,091 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:31:07,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 10:31:07,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:07,291 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:31:07,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 87814561, now seen corresponding path program 5 times [2024-12-02 10:31:07,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:31:07,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449445518] [2024-12-02 10:31:07,292 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 10:31:07,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:07,294 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:07,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 10:31:07,552 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:31:07,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:31:07,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:31:07,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:31:07,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:31:07,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-12-02 10:31:08,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-12-02 10:31:08,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:08,284 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:08,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-12-02 10:31:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:08,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:08,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:08,489 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:08,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:08,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:08,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-12-02 10:31:08,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:08,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-12-02 10:31:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:08,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:08,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449445518] [2024-12-02 10:31:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449445518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:08,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140631709] [2024-12-02 10:31:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:08,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:08,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:08,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:13,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:13,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 2206 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:13,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:13,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:13,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:17,861 INFO L124 PetriNetUnfolderBase]: 709/1521 cut-off events. [2024-12-02 10:31:17,861 INFO L125 PetriNetUnfolderBase]: For 8833/8835 co-relation queries the response was YES. [2024-12-02 10:31:17,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7186 conditions, 1521 events. 709/1521 cut-off events. For 8833/8835 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8177 event pairs, 169 based on Foata normal form. 3/1524 useless extension candidates. Maximal degree in co-relation 7130. Up to 711 conditions per place. [2024-12-02 10:31:17,869 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 184 selfloop transitions, 100 changer transitions 0/290 dead transitions. [2024-12-02 10:31:17,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 290 transitions, 3398 flow [2024-12-02 10:31:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:31:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 10:31:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1573 transitions. [2024-12-02 10:31:17,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2024-12-02 10:31:17,873 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 2206 flow. Second operand 25 states and 1573 transitions. [2024-12-02 10:31:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 290 transitions, 3398 flow [2024-12-02 10:31:17,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 290 transitions, 3257 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-12-02 10:31:17,901 INFO L231 Difference]: Finished difference. Result has 240 places, 219 transitions, 2499 flow [2024-12-02 10:31:17,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2499, PETRI_PLACES=240, PETRI_TRANSITIONS=219} [2024-12-02 10:31:17,902 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 118 predicate places. [2024-12-02 10:31:17,902 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 219 transitions, 2499 flow [2024-12-02 10:31:17,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:17,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:31:17,902 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:31:17,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 10:31:18,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:18,102 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:31:18,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -306073849, now seen corresponding path program 6 times [2024-12-02 10:31:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:31:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024884135] [2024-12-02 10:31:18,104 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 10:31:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:18,105 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:18,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 10:31:18,326 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-12-02 10:31:18,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:31:18,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:31:18,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:31:18,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:31:18,805 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:18,806 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:18,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2024-12-02 10:31:18,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 71 [2024-12-02 10:31:19,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2024-12-02 10:31:19,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:19,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:19,351 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:19,351 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:19,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:19,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 88 [2024-12-02 10:31:19,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:19,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 81 [2024-12-02 10:31:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:19,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:19,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024884135] [2024-12-02 10:31:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024884135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:19,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:19,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:19,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753022976] [2024-12-02 10:31:19,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:19,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:19,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:19,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:22,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:22,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 219 transitions, 2499 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:22,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:22,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:22,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:28,240 INFO L124 PetriNetUnfolderBase]: 715/1530 cut-off events. [2024-12-02 10:31:28,240 INFO L125 PetriNetUnfolderBase]: For 10526/10534 co-relation queries the response was YES. [2024-12-02 10:31:28,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7413 conditions, 1530 events. 715/1530 cut-off events. For 10526/10534 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8243 event pairs, 174 based on Foata normal form. 9/1538 useless extension candidates. Maximal degree in co-relation 7347. Up to 708 conditions per place. [2024-12-02 10:31:28,249 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 212 selfloop transitions, 101 changer transitions 0/319 dead transitions. [2024-12-02 10:31:28,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 319 transitions, 4012 flow [2024-12-02 10:31:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 10:31:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-12-02 10:31:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1458 transitions. [2024-12-02 10:31:28,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48023715415019763 [2024-12-02 10:31:28,251 INFO L175 Difference]: Start difference. First operand has 240 places, 219 transitions, 2499 flow. Second operand 23 states and 1458 transitions. [2024-12-02 10:31:28,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 319 transitions, 4012 flow [2024-12-02 10:31:28,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 319 transitions, 3812 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-12-02 10:31:28,287 INFO L231 Difference]: Finished difference. Result has 262 places, 244 transitions, 2919 flow [2024-12-02 10:31:28,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2919, PETRI_PLACES=262, PETRI_TRANSITIONS=244} [2024-12-02 10:31:28,287 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 140 predicate places. [2024-12-02 10:31:28,287 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 244 transitions, 2919 flow [2024-12-02 10:31:28,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:28,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:31:28,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:31:28,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 10:31:28,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:28,488 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:31:28,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -908046587, now seen corresponding path program 7 times [2024-12-02 10:31:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:31:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861139620] [2024-12-02 10:31:28,489 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 10:31:28,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:28,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:28,491 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:28,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 10:31:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:31:28,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:31:28,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:31:28,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:31:29,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-12-02 10:31:29,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-12-02 10:31:29,545 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:29,545 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:29,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-12-02 10:31:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:29,743 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:29,743 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:29,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:29,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-12-02 10:31:30,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:30,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-12-02 10:31:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:30,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:30,078 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:30,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861139620] [2024-12-02 10:31:30,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861139620] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:30,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:30,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317698633] [2024-12-02 10:31:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:30,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:30,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:30,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:33,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:33,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 244 transitions, 2919 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:33,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:33,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:33,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:38,668 INFO L124 PetriNetUnfolderBase]: 786/1691 cut-off events. [2024-12-02 10:31:38,668 INFO L125 PetriNetUnfolderBase]: For 12787/12789 co-relation queries the response was YES. [2024-12-02 10:31:38,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8205 conditions, 1691 events. 786/1691 cut-off events. For 12787/12789 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9439 event pairs, 202 based on Foata normal form. 3/1693 useless extension candidates. Maximal degree in co-relation 8129. Up to 824 conditions per place. [2024-12-02 10:31:38,679 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 224 selfloop transitions, 113 changer transitions 0/343 dead transitions. [2024-12-02 10:31:38,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 343 transitions, 4410 flow [2024-12-02 10:31:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 10:31:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-12-02 10:31:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1617 transitions. [2024-12-02 10:31:38,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-12-02 10:31:38,681 INFO L175 Difference]: Start difference. First operand has 262 places, 244 transitions, 2919 flow. Second operand 26 states and 1617 transitions. [2024-12-02 10:31:38,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 343 transitions, 4410 flow [2024-12-02 10:31:38,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 343 transitions, 4117 flow, removed 80 selfloop flow, removed 14 redundant places. [2024-12-02 10:31:38,731 INFO L231 Difference]: Finished difference. Result has 282 places, 267 transitions, 3240 flow [2024-12-02 10:31:38,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3240, PETRI_PLACES=282, PETRI_TRANSITIONS=267} [2024-12-02 10:31:38,731 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 160 predicate places. [2024-12-02 10:31:38,731 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 267 transitions, 3240 flow [2024-12-02 10:31:38,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:38,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:31:38,732 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:31:38,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 10:31:38,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:38,932 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:31:38,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1314059767, now seen corresponding path program 8 times [2024-12-02 10:31:38,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:31:38,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323764378] [2024-12-02 10:31:38,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:31:38,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:38,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:38,935 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:38,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 10:31:39,173 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:31:39,173 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:31:39,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:31:39,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:31:39,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:31:39,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-12-02 10:31:39,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-12-02 10:31:39,990 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:39,991 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:39,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-12-02 10:31:40,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:40,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:40,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:40,213 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:40,213 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:40,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:40,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-12-02 10:31:40,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:40,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-12-02 10:31:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:40,587 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:40,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:40,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323764378] [2024-12-02 10:31:40,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323764378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:40,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:40,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:40,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273778475] [2024-12-02 10:31:40,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:40,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:40,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:40,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:46,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:46,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 267 transitions, 3240 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:46,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:46,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:46,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:50,699 INFO L124 PetriNetUnfolderBase]: 854/1840 cut-off events. [2024-12-02 10:31:50,699 INFO L125 PetriNetUnfolderBase]: For 14600/14602 co-relation queries the response was YES. [2024-12-02 10:31:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1840 events. 854/1840 cut-off events. For 14600/14602 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10596 event pairs, 225 based on Foata normal form. 3/1842 useless extension candidates. Maximal degree in co-relation 8690. Up to 910 conditions per place. [2024-12-02 10:31:50,709 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 231 selfloop transitions, 116 changer transitions 0/353 dead transitions. [2024-12-02 10:31:50,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 353 transitions, 4637 flow [2024-12-02 10:31:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:31:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 10:31:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1559 transitions. [2024-12-02 10:31:50,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4724242424242424 [2024-12-02 10:31:50,711 INFO L175 Difference]: Start difference. First operand has 282 places, 267 transitions, 3240 flow. Second operand 25 states and 1559 transitions. [2024-12-02 10:31:50,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 353 transitions, 4637 flow [2024-12-02 10:31:50,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 353 transitions, 4318 flow, removed 80 selfloop flow, removed 17 redundant places. [2024-12-02 10:31:50,756 INFO L231 Difference]: Finished difference. Result has 299 places, 282 transitions, 3454 flow [2024-12-02 10:31:50,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3454, PETRI_PLACES=299, PETRI_TRANSITIONS=282} [2024-12-02 10:31:50,757 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 177 predicate places. [2024-12-02 10:31:50,757 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 282 transitions, 3454 flow [2024-12-02 10:31:50,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:50,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:31:50,757 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:31:50,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 10:31:50,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:50,958 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:31:50,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:31:50,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1634477245, now seen corresponding path program 9 times [2024-12-02 10:31:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:31:50,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444480043] [2024-12-02 10:31:50,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 10:31:50,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:31:50,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:31:50,961 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:31:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 10:31:51,202 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 10:31:51,202 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:31:51,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:31:51,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:31:51,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:31:51,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-12-02 10:31:51,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-12-02 10:31:52,027 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:52,027 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:52,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-12-02 10:31:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:52,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:31:52,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:52,230 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:31:52,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:52,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-12-02 10:31:52,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:31:52,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-12-02 10:31:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:31:52,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:31:52,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:31:52,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444480043] [2024-12-02 10:31:52,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444480043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:31:52,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:31:52,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:31:52,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239503785] [2024-12-02 10:31:52,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:31:52,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:31:52,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:31:52,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:31:52,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:31:55,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:31:55,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 282 transitions, 3454 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:31:55,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:31:55,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:31:55,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:31:59,953 INFO L124 PetriNetUnfolderBase]: 922/1989 cut-off events. [2024-12-02 10:31:59,953 INFO L125 PetriNetUnfolderBase]: For 16509/16511 co-relation queries the response was YES. [2024-12-02 10:31:59,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 1989 events. 922/1989 cut-off events. For 16509/16511 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11718 event pairs, 183 based on Foata normal form. 3/1991 useless extension candidates. Maximal degree in co-relation 9215. Up to 892 conditions per place. [2024-12-02 10:31:59,966 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 235 selfloop transitions, 132 changer transitions 0/373 dead transitions. [2024-12-02 10:31:59,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 373 transitions, 4928 flow [2024-12-02 10:31:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:31:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 10:31:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1559 transitions. [2024-12-02 10:31:59,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4724242424242424 [2024-12-02 10:31:59,968 INFO L175 Difference]: Start difference. First operand has 299 places, 282 transitions, 3454 flow. Second operand 25 states and 1559 transitions. [2024-12-02 10:31:59,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 373 transitions, 4928 flow [2024-12-02 10:32:00,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 373 transitions, 4724 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-12-02 10:32:00,018 INFO L231 Difference]: Finished difference. Result has 321 places, 295 transitions, 3755 flow [2024-12-02 10:32:00,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3755, PETRI_PLACES=321, PETRI_TRANSITIONS=295} [2024-12-02 10:32:00,018 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 199 predicate places. [2024-12-02 10:32:00,018 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 295 transitions, 3755 flow [2024-12-02 10:32:00,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:32:00,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:32:00,019 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:32:00,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 10:32:00,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:00,219 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:32:00,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1609685099, now seen corresponding path program 10 times [2024-12-02 10:32:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:32:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621960375] [2024-12-02 10:32:00,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 10:32:00,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:00,222 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:00,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 10:32:00,497 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 10:32:00,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:32:00,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 10:32:00,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:00,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 8 [2024-12-02 10:32:01,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 46 [2024-12-02 10:32:01,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2024-12-02 10:32:01,330 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:32:01,331 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:32:01,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 28 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2024-12-02 10:32:01,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:32:01,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:32:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 10:32:01,503 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:32:01,503 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 10:32:01,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:32:01,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 110 [2024-12-02 10:32:01,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:32:01,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 149 treesize of output 89 [2024-12-02 10:32:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:32:01,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:32:01,821 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:32:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621960375] [2024-12-02 10:32:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621960375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:32:01,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:32:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 10:32:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034524571] [2024-12-02 10:32:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:32:01,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:32:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:32:01,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:32:01,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:32:04,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2024-12-02 10:32:04,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 295 transitions, 3755 flow. Second operand has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:32:04,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:32:04,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2024-12-02 10:32:04,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:32:09,379 INFO L124 PetriNetUnfolderBase]: 922/1986 cut-off events. [2024-12-02 10:32:09,379 INFO L125 PetriNetUnfolderBase]: For 18375/18377 co-relation queries the response was YES. [2024-12-02 10:32:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9351 conditions, 1986 events. 922/1986 cut-off events. For 18375/18377 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11763 event pairs, 258 based on Foata normal form. 3/1988 useless extension candidates. Maximal degree in co-relation 9270. Up to 987 conditions per place. [2024-12-02 10:32:09,393 INFO L140 encePairwiseOnDemand]: 111/132 looper letters, 236 selfloop transitions, 125 changer transitions 0/365 dead transitions. [2024-12-02 10:32:09,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 365 transitions, 4959 flow [2024-12-02 10:32:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 10:32:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 10:32:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1570 transitions. [2024-12-02 10:32:09,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47575757575757577 [2024-12-02 10:32:09,395 INFO L175 Difference]: Start difference. First operand has 321 places, 295 transitions, 3755 flow. Second operand 25 states and 1570 transitions. [2024-12-02 10:32:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 365 transitions, 4959 flow [2024-12-02 10:32:09,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 365 transitions, 4628 flow, removed 61 selfloop flow, removed 16 redundant places. [2024-12-02 10:32:09,455 INFO L231 Difference]: Finished difference. Result has 328 places, 296 transitions, 3732 flow [2024-12-02 10:32:09,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3732, PETRI_PLACES=328, PETRI_TRANSITIONS=296} [2024-12-02 10:32:09,456 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 206 predicate places. [2024-12-02 10:32:09,456 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 296 transitions, 3732 flow [2024-12-02 10:32:09,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.35294117647059) internal successors, (992), 17 states have internal predecessors, (992), 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) [2024-12-02 10:32:09,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:32:09,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:32:09,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 10:32:09,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:09,657 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2024-12-02 10:32:09,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:32:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 550081341, now seen corresponding path program 1 times [2024-12-02 10:32:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:32:09,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115434396] [2024-12-02 10:32:09,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:32:09,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:32:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:32:09,660 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:32:09,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 10:32:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:32:09,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:32:09,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:32:14,457 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_my_drv_disconnect_~#status~0#1.base_43| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#data~1#1.base_82| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_82| (_ bv1 1)) |v_ULTIMATE.start_my_drv_disconnect_~#status~0#1.base_43|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_82|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_my_drv_disconnect_~#status~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#data~1#1.base_82| (_ bv0 1)) |c_#valid|))) is different from true [2024-12-02 10:32:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:32:14,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:32:14,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:32:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115434396] [2024-12-02 10:32:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115434396] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:32:14,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:32:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:32:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884807182] [2024-12-02 10:32:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:32:14,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:32:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:32:14,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:32:14,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=20, Unknown=2, NotChecked=8, Total=42 [2024-12-02 10:32:14,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 132 [2024-12-02 10:32:14,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 296 transitions, 3732 flow. Second operand has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 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) [2024-12-02 10:32:14,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:32:14,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 132 [2024-12-02 10:32:14,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:32:18,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:22,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:26,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:30,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:34,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:38,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:42,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:46,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:50,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:55,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:32:59,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:03,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:07,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:11,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:15,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:19,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:23,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:27,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:31,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:35,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:39,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:43,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:47,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:51,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:55,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:33:59,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 10:34:00,502 INFO L124 PetriNetUnfolderBase]: 922/1949 cut-off events. [2024-12-02 10:34:00,503 INFO L125 PetriNetUnfolderBase]: For 20421/20429 co-relation queries the response was YES. [2024-12-02 10:34:00,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 1949 events. 922/1949 cut-off events. For 20421/20429 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11703 event pairs, 409 based on Foata normal form. 2/1950 useless extension candidates. Maximal degree in co-relation 9071. Up to 1179 conditions per place. [2024-12-02 10:34:00,514 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 0 selfloop transitions, 0 changer transitions 361/361 dead transitions. [2024-12-02 10:34:00,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 361 transitions, 5066 flow [2024-12-02 10:34:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:34:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:34:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-12-02 10:34:00,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.329004329004329 [2024-12-02 10:34:00,515 INFO L175 Difference]: Start difference. First operand has 328 places, 296 transitions, 3732 flow. Second operand 7 states and 304 transitions. [2024-12-02 10:34:00,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 361 transitions, 5066 flow [2024-12-02 10:34:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 361 transitions, 4156 flow, removed 90 selfloop flow, removed 58 redundant places. [2024-12-02 10:34:00,564 INFO L231 Difference]: Finished difference. Result has 275 places, 0 transitions, 0 flow [2024-12-02 10:34:00,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=275, PETRI_TRANSITIONS=0} [2024-12-02 10:34:00,565 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 153 predicate places. [2024-12-02 10:34:00,565 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 0 transitions, 0 flow [2024-12-02 10:34:00,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 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) [2024-12-02 10:34:00,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (48 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (41 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (40 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 51 remaining) [2024-12-02 10:34:00,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (25 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (22 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (21 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (20 of 51 remaining) [2024-12-02 10:34:00,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 51 remaining) [2024-12-02 10:34:00,570 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 51 remaining) [2024-12-02 10:34:00,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 51 remaining) [2024-12-02 10:34:00,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 51 remaining) [2024-12-02 10:34:00,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 51 remaining) [2024-12-02 10:34:00,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 51 remaining) [2024-12-02 10:34:00,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-12-02 10:34:00,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:34:00,771 INFO L422 BasicCegarLoop]: Path program histogram: [10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:34:00,776 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 10:34:00,776 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 10:34:00,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 10:34:00 BasicIcfg [2024-12-02 10:34:00,780 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 10:34:00,781 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 10:34:00,781 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 10:34:00,781 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 10:34:00,781 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:26:55" (3/4) ... [2024-12-02 10:34:00,782 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 10:34:00,785 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-12-02 10:34:00,791 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 90 nodes and edges [2024-12-02 10:34:00,792 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-12-02 10:34:00,792 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-12-02 10:34:00,792 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 10:34:00,866 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 10:34:00,866 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 10:34:00,866 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 10:34:00,867 INFO L158 Benchmark]: Toolchain (without parser) took 426752.83ms. Allocated memory was 92.3MB in the beginning and 746.6MB in the end (delta: 654.3MB). Free memory was 67.1MB in the beginning and 337.4MB in the end (delta: -270.4MB). Peak memory consumption was 385.5MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,867 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:34:00,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.17ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 54.4MB in the end (delta: 12.5MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.02ms. Allocated memory is still 92.3MB. Free memory was 54.4MB in the beginning and 51.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:34:00,868 INFO L158 Benchmark]: Boogie Preprocessor took 62.46ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 47.4MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,868 INFO L158 Benchmark]: RCFGBuilder took 916.27ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 52.5MB in the end (delta: -5.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,869 INFO L158 Benchmark]: TraceAbstraction took 425055.56ms. Allocated memory was 92.3MB in the beginning and 746.6MB in the end (delta: 654.3MB). Free memory was 51.5MB in the beginning and 343.3MB in the end (delta: -291.8MB). Peak memory consumption was 359.9MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,869 INFO L158 Benchmark]: Witness Printer took 85.92ms. Allocated memory is still 746.6MB. Free memory was 343.3MB in the beginning and 337.4MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:34:00,870 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.17ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 54.4MB in the end (delta: 12.5MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.02ms. Allocated memory is still 92.3MB. Free memory was 54.4MB in the beginning and 51.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.46ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 47.4MB in the end (delta: 4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 916.27ms. Allocated memory is still 92.3MB. Free memory was 47.4MB in the beginning and 52.5MB in the end (delta: -5.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 425055.56ms. Allocated memory was 92.3MB in the beginning and 746.6MB in the end (delta: 654.3MB). Free memory was 51.5MB in the beginning and 343.3MB in the end (delta: -291.8MB). Peak memory consumption was 359.9MB. Max. memory is 16.1GB. * Witness Printer took 85.92ms. Allocated memory is still 746.6MB. Free memory was 343.3MB in the beginning and 337.4MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3942]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 3883]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 135 locations, 51 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 424.9s, OverallIterations: 37, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 386.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 74 mSolverCounterUnknown, 11257 SdHoareTripleChecker+Valid, 350.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9401 mSDsluCounter, 12345 SdHoareTripleChecker+Invalid, 341.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 236 IncrementalHoareTripleChecker+Unchecked, 12109 mSDsCounter, 473 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41729 IncrementalHoareTripleChecker+Invalid, 42512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 473 mSolverCounterUnsat, 236 mSDtfsCounter, 41729 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1248 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 421 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 35.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3755occurred in iteration=35, InterpolantAutomatonStates: 405, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 1090 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1053 ConstructedInterpolants, 28 QuantifiedInterpolants, 26991 SizeOfPredicates, 333 NumberOfNonLiveVariables, 7976 ConjunctsInSsa, 641 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 37 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 10:34:01,079 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-12-02 10:34:01,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bff683-7b2b-4e1d-9150-30308984b618/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE