./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:52:21,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:52:21,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:52:21,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:52:21,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:52:21,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:52:21,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:52:21,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:52:21,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:52:21,769 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:52:21,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:52:21,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:52:21,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:52:21,770 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:52:21,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:52:21,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:52:21,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:52:21,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:52:21,772 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-02-06 12:52:22,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:52:22,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:52:22,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:52:22,021 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:52:22,022 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:52:22,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-02-06 12:52:23,360 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/268cf047d/d282a25892084889a6848eed8ec4ab65/FLAG72610413a [2025-02-06 12:52:23,721 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:52:23,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-02-06 12:52:23,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/268cf047d/d282a25892084889a6848eed8ec4ab65/FLAG72610413a [2025-02-06 12:52:23,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/268cf047d/d282a25892084889a6848eed8ec4ab65 [2025-02-06 12:52:23,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:52:23,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:52:23,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:23,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:52:23,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:52:23,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:23" (1/1) ... [2025-02-06 12:52:23,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b640b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:23, skipping insertion in model container [2025-02-06 12:52:23,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:23" (1/1) ... [2025-02-06 12:52:23,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:52:24,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:24,136 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) [2025-02-06 12:52:24,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3452d7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:24, skipping insertion in model container [2025-02-06 12:52:24,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:24,137 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:52:24,139 INFO L158 Benchmark]: Toolchain (without parser) took 365.85ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 85.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:52:24,139 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:52:24,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.91ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 85.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:52:24,143 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.91ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 85.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: 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: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:52:26,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:52:26,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:52:26,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:52:26,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:52:26,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:52:26,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:52:26,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:52:26,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:52:26,202 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:52:26,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:52:26,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:52:26,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:52:26,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:52:26,203 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:52:26,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:52:26,204 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:52:26,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:52:26,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:52:26,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:52:26,205 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-02-06 12:52:26,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:52:26,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:52:26,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:52:26,522 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:52:26,523 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:52:26,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-02-06 12:52:27,823 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b9eb04b6/4f6228e84e854300a6a369d3a320e284/FLAG22ef044d1 [2025-02-06 12:52:28,115 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:52:28,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-02-06 12:52:28,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b9eb04b6/4f6228e84e854300a6a369d3a320e284/FLAG22ef044d1 [2025-02-06 12:52:28,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2b9eb04b6/4f6228e84e854300a6a369d3a320e284 [2025-02-06 12:52:28,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:52:28,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:52:28,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:28,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:52:28,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:52:28,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c163f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28, skipping insertion in model container [2025-02-06 12:52:28,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:52:28,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:28,536 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:52:28,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:52:28,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:28,629 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:52:28,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:52:28,719 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:52:28,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28 WrapperNode [2025-02-06 12:52:28,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:52:28,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:52:28,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:52:28,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:52:28,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,756 INFO L138 Inliner]: procedures = 249, calls = 44, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2025-02-06 12:52:28,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:52:28,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:52:28,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:52:28,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:52:28,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,787 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]. [2025-02-06 12:52:28,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,806 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:52:28,819 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:52:28,820 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:52:28,820 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:52:28,820 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (1/1) ... [2025-02-06 12:52:28,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:52:28,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:28,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:52:28,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:52:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:52:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-02-06 12:52:28,879 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 12:52:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:52:28,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:52:28,880 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:52:29,165 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:52:29,167 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:52:29,610 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:52:29,611 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:52:29,743 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:52:29,743 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:52:29,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:52:29 BoogieIcfgContainer [2025-02-06 12:52:29,744 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:52:29,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:52:29,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:52:29,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:52:29,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:52:28" (1/3) ... [2025-02-06 12:52:29,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b035105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:52:29, skipping insertion in model container [2025-02-06 12:52:29,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:52:28" (2/3) ... [2025-02-06 12:52:29,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b035105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:52:29, skipping insertion in model container [2025-02-06 12:52:29,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:52:29" (3/3) ... [2025-02-06 12:52:29,753 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2025-02-06 12:52:29,763 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:52:29,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_2-container_of-global.i that has 2 procedures, 100 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-02-06 12:52:29,765 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:52:29,833 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 12:52:29,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 266 flow [2025-02-06 12:52:29,918 INFO L124 PetriNetUnfolderBase]: 18/159 cut-off events. [2025-02-06 12:52:29,920 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 12:52:29,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 18/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 480 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2025-02-06 12:52:29,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 266 flow [2025-02-06 12:52:29,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 260 flow [2025-02-06 12:52:29,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:52:29,945 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;@73ce36b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:52:29,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-02-06 12:52:29,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:52:29,950 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-02-06 12:52:29,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:52:29,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:29,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:52:29,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:29,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 497114, now seen corresponding path program 1 times [2025-02-06 12:52:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:29,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834113546] [2025-02-06 12:52:29,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:29,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:29,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:29,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:29,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:52:30,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:52:30,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:52:30,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:30,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:30,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:52:30,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:30,133 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 [2025-02-06 12:52:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:30,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:30,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834113546] [2025-02-06 12:52:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834113546] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:30,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126709123] [2025-02-06 12:52:30,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:30,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:30,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:30,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:30,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:30,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-02-06 12:52:30,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2025-02-06 12:52:30,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-02-06 12:52:30,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:31,366 INFO L124 PetriNetUnfolderBase]: 3071/7677 cut-off events. [2025-02-06 12:52:31,366 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-02-06 12:52:31,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12595 conditions, 7677 events. 3071/7677 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 73606 event pairs, 407 based on Foata normal form. 588/5627 useless extension candidates. Maximal degree in co-relation 12356. Up to 4146 conditions per place. [2025-02-06 12:52:31,426 INFO L140 encePairwiseOnDemand]: 108/126 looper letters, 78 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2025-02-06 12:52:31,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 420 flow [2025-02-06 12:52:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2025-02-06 12:52:31,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 12:52:31,442 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 260 flow. Second operand 3 states and 234 transitions. [2025-02-06 12:52:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 420 flow [2025-02-06 12:52:31,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 124 transitions, 412 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:52:31,456 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 212 flow [2025-02-06 12:52:31,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2025-02-06 12:52:31,461 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -12 predicate places. [2025-02-06 12:52:31,461 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 212 flow [2025-02-06 12:52:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2025-02-06 12:52:31,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:31,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:52:31,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 12:52:31,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:31,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:31,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash 497115, now seen corresponding path program 1 times [2025-02-06 12:52:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:31,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376604863] [2025-02-06 12:52:31,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:31,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:31,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:31,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:31,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:52:31,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:52:31,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:52:31,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:31,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:31,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:52:31,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:31,802 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 [2025-02-06 12:52:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:31,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:31,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376604863] [2025-02-06 12:52:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376604863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:31,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160827176] [2025-02-06 12:52:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:31,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:31,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:31,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:31,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-02-06 12:52:31,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2025-02-06 12:52:31,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:31,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-02-06 12:52:31,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:32,628 INFO L124 PetriNetUnfolderBase]: 3071/7673 cut-off events. [2025-02-06 12:52:32,628 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-02-06 12:52:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 7673 events. 3071/7673 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 73660 event pairs, 407 based on Foata normal form. 2/5037 useless extension candidates. Maximal degree in co-relation 1475. Up to 4146 conditions per place. [2025-02-06 12:52:32,660 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 76 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2025-02-06 12:52:32,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 120 transitions, 404 flow [2025-02-06 12:52:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2025-02-06 12:52:32,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2025-02-06 12:52:32,666 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 212 flow. Second operand 3 states and 226 transitions. [2025-02-06 12:52:32,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 120 transitions, 404 flow [2025-02-06 12:52:32,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:52:32,669 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 204 flow [2025-02-06 12:52:32,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2025-02-06 12:52:32,669 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-02-06 12:52:32,669 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 204 flow [2025-02-06 12:52:32,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2025-02-06 12:52:32,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:32,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 12:52:32,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:52:32,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:32,871 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:32,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 15408698, now seen corresponding path program 1 times [2025-02-06 12:52:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256687469] [2025-02-06 12:52:32,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:32,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:32,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:32,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:52:32,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:52:32,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:52:32,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:32,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:32,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:52:32,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:32,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:32,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256687469] [2025-02-06 12:52:32,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256687469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:32,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:32,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:52:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116442133] [2025-02-06 12:52:32,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:32,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:32,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:32,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:33,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-02-06 12:52:33,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2025-02-06 12:52:33,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:33,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-02-06 12:52:33,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:33,830 INFO L124 PetriNetUnfolderBase]: 3335/6211 cut-off events. [2025-02-06 12:52:33,830 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-02-06 12:52:33,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11656 conditions, 6211 events. 3335/6211 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 44084 event pairs, 3069 based on Foata normal form. 0/4078 useless extension candidates. Maximal degree in co-relation 3942. Up to 4873 conditions per place. [2025-02-06 12:52:33,867 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 76 selfloop transitions, 3 changer transitions 2/121 dead transitions. [2025-02-06 12:52:33,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 410 flow [2025-02-06 12:52:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:33,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2025-02-06 12:52:33,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 12:52:33,872 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 204 flow. Second operand 3 states and 234 transitions. [2025-02-06 12:52:33,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 410 flow [2025-02-06 12:52:33,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:52:33,876 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 209 flow [2025-02-06 12:52:33,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2025-02-06 12:52:33,878 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -15 predicate places. [2025-02-06 12:52:33,878 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 209 flow [2025-02-06 12:52:33,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2025-02-06 12:52:33,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:33,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:33,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 12:52:34,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:34,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:34,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1158078077, now seen corresponding path program 1 times [2025-02-06 12:52:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:34,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336774387] [2025-02-06 12:52:34,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:34,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:34,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:52:34,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:52:34,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:52:34,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:34,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:34,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:52:34,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:34,240 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:34,240 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:34,244 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 [2025-02-06 12:52:34,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:34,328 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 [2025-02-06 12:52:34,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:34,427 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 127 treesize of output 49 [2025-02-06 12:52:34,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:34,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:34,444 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:34,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336774387] [2025-02-06 12:52:34,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336774387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:34,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:34,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:52:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794910502] [2025-02-06 12:52:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:34,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:34,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:34,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:34,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-02-06 12:52:34,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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) [2025-02-06 12:52:34,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:34,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-02-06 12:52:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:35,436 INFO L124 PetriNetUnfolderBase]: 3598/6661 cut-off events. [2025-02-06 12:52:35,437 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2025-02-06 12:52:35,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12663 conditions, 6661 events. 3598/6661 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 47116 event pairs, 2343 based on Foata normal form. 1/4538 useless extension candidates. Maximal degree in co-relation 11689. Up to 5605 conditions per place. [2025-02-06 12:52:35,470 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 64 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2025-02-06 12:52:35,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 370 flow [2025-02-06 12:52:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:52:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:52:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2025-02-06 12:52:35,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2025-02-06 12:52:35,473 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 209 flow. Second operand 5 states and 312 transitions. [2025-02-06 12:52:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 370 flow [2025-02-06 12:52:35,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 359 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 12:52:35,494 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 224 flow [2025-02-06 12:52:35,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2025-02-06 12:52:35,495 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-02-06 12:52:35,495 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 224 flow [2025-02-06 12:52:35,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 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) [2025-02-06 12:52:35,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:35,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:35,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:52:35,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:35,700 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:35,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1131098796, now seen corresponding path program 1 times [2025-02-06 12:52:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616684151] [2025-02-06 12:52:35,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:35,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:35,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:35,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:52:35,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:52:35,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:52:35,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:35,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:35,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:52:35,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:35,801 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:35,802 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:35,803 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:35,805 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 [2025-02-06 12:52:35,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:35,952 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 [2025-02-06 12:52:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:35,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:35,970 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:35,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616684151] [2025-02-06 12:52:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616684151] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:35,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:35,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:52:35,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701655108] [2025-02-06 12:52:35,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:35,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:35,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:35,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:35,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:36,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2025-02-06 12:52:36,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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) [2025-02-06 12:52:36,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:36,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2025-02-06 12:52:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:36,919 INFO L124 PetriNetUnfolderBase]: 4126/7546 cut-off events. [2025-02-06 12:52:36,919 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2025-02-06 12:52:36,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14648 conditions, 7546 events. 4126/7546 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 53418 event pairs, 2727 based on Foata normal form. 0/5114 useless extension candidates. Maximal degree in co-relation 8001. Up to 6425 conditions per place. [2025-02-06 12:52:36,958 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 66 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2025-02-06 12:52:36,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 387 flow [2025-02-06 12:52:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:52:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:52:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2025-02-06 12:52:36,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2025-02-06 12:52:36,960 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 224 flow. Second operand 5 states and 291 transitions. [2025-02-06 12:52:36,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 387 flow [2025-02-06 12:52:36,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 379 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:52:36,962 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 228 flow [2025-02-06 12:52:36,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2025-02-06 12:52:36,966 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -18 predicate places. [2025-02-06 12:52:36,966 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 228 flow [2025-02-06 12:52:36,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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) [2025-02-06 12:52:36,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:36,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:36,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 12:52:37,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:37,168 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:37,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1742288832, now seen corresponding path program 1 times [2025-02-06 12:52:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076508795] [2025-02-06 12:52:37,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:37,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:37,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:37,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:52:37,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:52:37,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:52:37,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:37,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:37,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:52:37,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:37,281 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 [2025-02-06 12:52:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:37,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:37,322 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076508795] [2025-02-06 12:52:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076508795] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:37,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233317709] [2025-02-06 12:52:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:37,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:37,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:37,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:37,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:37,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-02-06 12:52:37,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2025-02-06 12:52:37,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:37,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-02-06 12:52:37,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:38,378 INFO L124 PetriNetUnfolderBase]: 2554/6148 cut-off events. [2025-02-06 12:52:38,378 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2025-02-06 12:52:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 6148 events. 2554/6148 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 54688 event pairs, 183 based on Foata normal form. 0/4473 useless extension candidates. Maximal degree in co-relation 5200. Up to 2287 conditions per place. [2025-02-06 12:52:38,399 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 142 selfloop transitions, 15 changer transitions 1/193 dead transitions. [2025-02-06 12:52:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 193 transitions, 769 flow [2025-02-06 12:52:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:52:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:52:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 530 transitions. [2025-02-06 12:52:38,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5257936507936508 [2025-02-06 12:52:38,401 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 228 flow. Second operand 8 states and 530 transitions. [2025-02-06 12:52:38,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 193 transitions, 769 flow [2025-02-06 12:52:38,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 747 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:52:38,404 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 315 flow [2025-02-06 12:52:38,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2025-02-06 12:52:38,404 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -11 predicate places. [2025-02-06 12:52:38,404 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 315 flow [2025-02-06 12:52:38,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2025-02-06 12:52:38,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:38,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:38,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 12:52:38,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:38,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:38,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1742288831, now seen corresponding path program 1 times [2025-02-06 12:52:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:38,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165036331] [2025-02-06 12:52:38,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:38,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:38,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 12:52:38,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 12:52:38,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 12:52:38,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:38,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:38,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:52:38,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:38,744 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 [2025-02-06 12:52:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:38,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:38,845 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165036331] [2025-02-06 12:52:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165036331] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:38,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343471875] [2025-02-06 12:52:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:38,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:38,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:38,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:39,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-02-06 12:52:39,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2025-02-06 12:52:39,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:39,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-02-06 12:52:39,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:39,746 INFO L124 PetriNetUnfolderBase]: 1721/4181 cut-off events. [2025-02-06 12:52:39,746 INFO L125 PetriNetUnfolderBase]: For 1973/1973 co-relation queries the response was YES. [2025-02-06 12:52:39,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8516 conditions, 4181 events. 1721/4181 cut-off events. For 1973/1973 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 34822 event pairs, 207 based on Foata normal form. 450/3770 useless extension candidates. Maximal degree in co-relation 7345. Up to 1957 conditions per place. [2025-02-06 12:52:39,765 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 125 selfloop transitions, 12 changer transitions 2/176 dead transitions. [2025-02-06 12:52:39,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 176 transitions, 765 flow [2025-02-06 12:52:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 12:52:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 12:52:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 473 transitions. [2025-02-06 12:52:39,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.536281179138322 [2025-02-06 12:52:39,767 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 315 flow. Second operand 7 states and 473 transitions. [2025-02-06 12:52:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 176 transitions, 765 flow [2025-02-06 12:52:39,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 176 transitions, 765 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:52:39,777 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 373 flow [2025-02-06 12:52:39,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-02-06 12:52:39,778 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2025-02-06 12:52:39,779 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 373 flow [2025-02-06 12:52:39,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2025-02-06 12:52:39,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:39,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:39,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 12:52:39,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:39,981 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:39,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1821344398, now seen corresponding path program 1 times [2025-02-06 12:52:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:39,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256098374] [2025-02-06 12:52:39,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:39,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:39,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:39,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:52:40,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:52:40,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:52:40,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:40,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:40,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:52:40,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:40,118 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 5 [2025-02-06 12:52:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:40,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:40,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:40,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256098374] [2025-02-06 12:52:40,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256098374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:40,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:40,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469683046] [2025-02-06 12:52:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:40,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:40,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:40,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:40,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-02-06 12:52:40,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2025-02-06 12:52:40,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:40,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-02-06 12:52:40,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:40,865 INFO L124 PetriNetUnfolderBase]: 1721/3627 cut-off events. [2025-02-06 12:52:40,865 INFO L125 PetriNetUnfolderBase]: For 3615/3615 co-relation queries the response was YES. [2025-02-06 12:52:40,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8584 conditions, 3627 events. 1721/3627 cut-off events. For 3615/3615 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 25976 event pairs, 958 based on Foata normal form. 146/3225 useless extension candidates. Maximal degree in co-relation 7409. Up to 1747 conditions per place. [2025-02-06 12:52:40,879 INFO L140 encePairwiseOnDemand]: 119/126 looper letters, 91 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2025-02-06 12:52:40,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 128 transitions, 623 flow [2025-02-06 12:52:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2025-02-06 12:52:40,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-02-06 12:52:40,881 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 373 flow. Second operand 3 states and 225 transitions. [2025-02-06 12:52:40,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 128 transitions, 623 flow [2025-02-06 12:52:40,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 609 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:52:40,887 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 391 flow [2025-02-06 12:52:40,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2025-02-06 12:52:40,888 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -3 predicate places. [2025-02-06 12:52:40,888 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 391 flow [2025-02-06 12:52:40,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2025-02-06 12:52:40,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:40,888 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:40,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:52:41,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:41,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:41,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1821344397, now seen corresponding path program 1 times [2025-02-06 12:52:41,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223555061] [2025-02-06 12:52:41,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:41,092 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:41,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 12:52:41,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:52:41,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:52:41,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:41,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:41,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:52:41,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:41,201 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 [2025-02-06 12:52:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:41,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:41,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223555061] [2025-02-06 12:52:41,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223555061] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:41,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:41,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780140154] [2025-02-06 12:52:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:41,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:41,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:41,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:41,290 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-02-06 12:52:41,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2025-02-06 12:52:41,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:41,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-02-06 12:52:41,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:41,774 INFO L124 PetriNetUnfolderBase]: 1973/3860 cut-off events. [2025-02-06 12:52:41,774 INFO L125 PetriNetUnfolderBase]: For 3908/3908 co-relation queries the response was YES. [2025-02-06 12:52:41,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 3860 events. 1973/3860 cut-off events. For 3908/3908 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 25740 event pairs, 1315 based on Foata normal form. 0/3323 useless extension candidates. Maximal degree in co-relation 8412. Up to 2473 conditions per place. [2025-02-06 12:52:41,788 INFO L140 encePairwiseOnDemand]: 117/126 looper letters, 80 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2025-02-06 12:52:41,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 589 flow [2025-02-06 12:52:41,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-02-06 12:52:41,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 12:52:41,790 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 391 flow. Second operand 3 states and 210 transitions. [2025-02-06 12:52:41,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 589 flow [2025-02-06 12:52:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:52:41,798 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 389 flow [2025-02-06 12:52:41,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2025-02-06 12:52:41,799 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -7 predicate places. [2025-02-06 12:52:41,799 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 389 flow [2025-02-06 12:52:41,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2025-02-06 12:52:41,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:41,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:41,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:52:42,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:42,000 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:42,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash 696763674, now seen corresponding path program 1 times [2025-02-06 12:52:42,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136112936] [2025-02-06 12:52:42,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:42,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:42,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:42,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 12:52:42,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:52:42,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:52:42,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:42,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:42,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 12:52:42,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:42,148 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 [2025-02-06 12:52:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:42,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:42,236 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136112936] [2025-02-06 12:52:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136112936] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:42,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:42,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817529104] [2025-02-06 12:52:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:42,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:42,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:42,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:42,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 126 [2025-02-06 12:52:42,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 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) [2025-02-06 12:52:42,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:42,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 126 [2025-02-06 12:52:42,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:43,055 INFO L124 PetriNetUnfolderBase]: 1301/2852 cut-off events. [2025-02-06 12:52:43,055 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2025-02-06 12:52:43,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 2852 events. 1301/2852 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19437 event pairs, 93 based on Foata normal form. 0/2623 useless extension candidates. Maximal degree in co-relation 5905. Up to 1488 conditions per place. [2025-02-06 12:52:43,065 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 116 selfloop transitions, 16 changer transitions 1/165 dead transitions. [2025-02-06 12:52:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 165 transitions, 909 flow [2025-02-06 12:52:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 12:52:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 12:52:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 455 transitions. [2025-02-06 12:52:43,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-02-06 12:52:43,067 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 389 flow. Second operand 7 states and 455 transitions. [2025-02-06 12:52:43,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 165 transitions, 909 flow [2025-02-06 12:52:43,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 891 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:52:43,075 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 479 flow [2025-02-06 12:52:43,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2025-02-06 12:52:43,075 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2025-02-06 12:52:43,075 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 479 flow [2025-02-06 12:52:43,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 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) [2025-02-06 12:52:43,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:43,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:43,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 12:52:43,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:43,276 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:43,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash 696763673, now seen corresponding path program 1 times [2025-02-06 12:52:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:43,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032385742] [2025-02-06 12:52:43,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:43,279 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:43,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 12:52:43,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:52:43,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:52:43,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:43,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:43,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:52:43,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:43,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:43,414 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032385742] [2025-02-06 12:52:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032385742] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:43,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853333291] [2025-02-06 12:52:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:43,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:43,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:43,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:43,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:43,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 126 [2025-02-06 12:52:43,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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) [2025-02-06 12:52:43,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:43,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 126 [2025-02-06 12:52:43,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:44,027 INFO L124 PetriNetUnfolderBase]: 1070/2326 cut-off events. [2025-02-06 12:52:44,027 INFO L125 PetriNetUnfolderBase]: For 2795/2795 co-relation queries the response was YES. [2025-02-06 12:52:44,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 2326 events. 1070/2326 cut-off events. For 2795/2795 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15252 event pairs, 153 based on Foata normal form. 65/2328 useless extension candidates. Maximal degree in co-relation 5144. Up to 794 conditions per place. [2025-02-06 12:52:44,037 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 119 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2025-02-06 12:52:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 170 transitions, 994 flow [2025-02-06 12:52:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:52:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:52:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 497 transitions. [2025-02-06 12:52:44,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2025-02-06 12:52:44,042 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 479 flow. Second operand 8 states and 497 transitions. [2025-02-06 12:52:44,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 170 transitions, 994 flow [2025-02-06 12:52:44,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 170 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:52:44,049 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 604 flow [2025-02-06 12:52:44,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2025-02-06 12:52:44,050 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 10 predicate places. [2025-02-06 12:52:44,050 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 604 flow [2025-02-06 12:52:44,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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) [2025-02-06 12:52:44,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:44,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:44,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:52:44,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:44,250 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:44,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 718716973, now seen corresponding path program 1 times [2025-02-06 12:52:44,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:44,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956058539] [2025-02-06 12:52:44,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:44,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:44,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:44,253 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:44,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 12:52:44,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:52:44,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:52:44,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:44,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:44,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 12:52:44,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:44,395 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 [2025-02-06 12:52:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:44,533 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 [2025-02-06 12:52:44,544 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:52:44,544 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 [2025-02-06 12:52:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:44,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:44,558 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956058539] [2025-02-06 12:52:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956058539] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:52:44,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673636856] [2025-02-06 12:52:44,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:44,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:52:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:44,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:52:44,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:52:45,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-02-06 12:52:45,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 604 flow. Second operand has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2025-02-06 12:52:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-02-06 12:52:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:45,874 INFO L124 PetriNetUnfolderBase]: 1229/2618 cut-off events. [2025-02-06 12:52:45,875 INFO L125 PetriNetUnfolderBase]: For 5357/5357 co-relation queries the response was YES. [2025-02-06 12:52:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 2618 events. 1229/2618 cut-off events. For 5357/5357 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17840 event pairs, 320 based on Foata normal form. 27/2634 useless extension candidates. Maximal degree in co-relation 6773. Up to 745 conditions per place. [2025-02-06 12:52:45,889 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 138 selfloop transitions, 21 changer transitions 0/189 dead transitions. [2025-02-06 12:52:45,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 189 transitions, 1220 flow [2025-02-06 12:52:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:52:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 12:52:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 520 transitions. [2025-02-06 12:52:45,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4585537918871252 [2025-02-06 12:52:45,895 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 604 flow. Second operand 9 states and 520 transitions. [2025-02-06 12:52:45,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 189 transitions, 1220 flow [2025-02-06 12:52:45,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 189 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 12:52:45,909 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 618 flow [2025-02-06 12:52:45,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2025-02-06 12:52:45,910 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 11 predicate places. [2025-02-06 12:52:45,910 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 618 flow [2025-02-06 12:52:45,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2025-02-06 12:52:45,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:45,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:52:45,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 12:52:46,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:46,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:46,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -374887879, now seen corresponding path program 1 times [2025-02-06 12:52:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574151990] [2025-02-06 12:52:46,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:46,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:46,114 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:46,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 12:52:46,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:52:46,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:52:46,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:46,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:46,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 12:52:46,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:46,258 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 [2025-02-06 12:52:46,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:46,395 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 [2025-02-06 12:52:46,405 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:52:46,405 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 [2025-02-06 12:52:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:46,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:46,418 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:46,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574151990] [2025-02-06 12:52:46,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574151990] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:46,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:46,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:52:46,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299626751] [2025-02-06 12:52:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:46,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:52:46,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:46,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:52:46,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:52:46,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-02-06 12:52:46,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 113 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2025-02-06 12:52:46,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:46,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-02-06 12:52:46,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:47,594 INFO L124 PetriNetUnfolderBase]: 1476/3063 cut-off events. [2025-02-06 12:52:47,594 INFO L125 PetriNetUnfolderBase]: For 6563/6563 co-relation queries the response was YES. [2025-02-06 12:52:47,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 3063 events. 1476/3063 cut-off events. For 6563/6563 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21665 event pairs, 498 based on Foata normal form. 24/3079 useless extension candidates. Maximal degree in co-relation 6840. Up to 701 conditions per place. [2025-02-06 12:52:47,606 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 135 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2025-02-06 12:52:47,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 186 transitions, 1249 flow [2025-02-06 12:52:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:52:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 12:52:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 514 transitions. [2025-02-06 12:52:47,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4532627865961199 [2025-02-06 12:52:47,608 INFO L175 Difference]: Start difference. First operand has 127 places, 113 transitions, 618 flow. Second operand 9 states and 514 transitions. [2025-02-06 12:52:47,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 186 transitions, 1249 flow [2025-02-06 12:52:47,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 186 transitions, 1197 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 12:52:47,619 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 612 flow [2025-02-06 12:52:47,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=612, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2025-02-06 12:52:47,620 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 9 predicate places. [2025-02-06 12:52:47,620 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 612 flow [2025-02-06 12:52:47,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2025-02-06 12:52:47,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:47,620 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] [2025-02-06 12:52:47,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 12:52:47,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:47,821 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:47,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash -239563997, now seen corresponding path program 1 times [2025-02-06 12:52:47,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141914967] [2025-02-06 12:52:47,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:47,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:47,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:47,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:47,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 12:52:47,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 12:52:47,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 12:52:47,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:47,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:47,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:52:47,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:47,961 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,961 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,962 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,963 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 [2025-02-06 12:52:47,992 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,993 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,993 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:47,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:47,998 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 73 treesize of output 93 [2025-02-06 12:52:48,080 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:48,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2025-02-06 12:52:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:48,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:48,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:48,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141914967] [2025-02-06 12:52:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141914967] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:52:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451573042] [2025-02-06 12:52:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:48,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:52:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:48,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:52:48,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:52:48,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-02-06 12:52:48,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2025-02-06 12:52:48,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:48,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-02-06 12:52:48,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:51,348 INFO L124 PetriNetUnfolderBase]: 2168/3988 cut-off events. [2025-02-06 12:52:51,349 INFO L125 PetriNetUnfolderBase]: For 8841/8841 co-relation queries the response was YES. [2025-02-06 12:52:51,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 3988 events. 2168/3988 cut-off events. For 8841/8841 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 26331 event pairs, 990 based on Foata normal form. 0/3908 useless extension candidates. Maximal degree in co-relation 9722. Up to 2446 conditions per place. [2025-02-06 12:52:51,366 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 107 selfloop transitions, 43 changer transitions 0/172 dead transitions. [2025-02-06 12:52:51,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 172 transitions, 1225 flow [2025-02-06 12:52:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 12:52:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 12:52:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 415 transitions. [2025-02-06 12:52:51,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47052154195011336 [2025-02-06 12:52:51,367 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 612 flow. Second operand 7 states and 415 transitions. [2025-02-06 12:52:51,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 172 transitions, 1225 flow [2025-02-06 12:52:51,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 172 transitions, 1178 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 12:52:51,383 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 875 flow [2025-02-06 12:52:51,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=875, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2025-02-06 12:52:51,384 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 14 predicate places. [2025-02-06 12:52:51,384 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 875 flow [2025-02-06 12:52:51,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2025-02-06 12:52:51,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:51,385 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] [2025-02-06 12:52:51,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 12:52:51,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:51,585 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:51,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1453331551, now seen corresponding path program 1 times [2025-02-06 12:52:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404189461] [2025-02-06 12:52:51,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:51,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:51,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:51,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:51,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 12:52:51,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:52:51,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:52:51,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:51,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:51,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:52:51,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:51,738 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 [2025-02-06 12:52:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:51,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:51,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404189461] [2025-02-06 12:52:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404189461] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:51,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:51,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263986021] [2025-02-06 12:52:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:51,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:51,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:51,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:51,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:51,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2025-02-06 12:52:51,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 132 transitions, 875 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2025-02-06 12:52:51,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:51,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2025-02-06 12:52:51,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:52,415 INFO L124 PetriNetUnfolderBase]: 1856/3663 cut-off events. [2025-02-06 12:52:52,415 INFO L125 PetriNetUnfolderBase]: For 12283/12283 co-relation queries the response was YES. [2025-02-06 12:52:52,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14386 conditions, 3663 events. 1856/3663 cut-off events. For 12283/12283 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 26106 event pairs, 1150 based on Foata normal form. 1/3655 useless extension candidates. Maximal degree in co-relation 11578. Up to 3073 conditions per place. [2025-02-06 12:52:52,434 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 100 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2025-02-06 12:52:52,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 138 transitions, 1137 flow [2025-02-06 12:52:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-02-06 12:52:52,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 12:52:52,435 INFO L175 Difference]: Start difference. First operand has 130 places, 132 transitions, 875 flow. Second operand 3 states and 210 transitions. [2025-02-06 12:52:52,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 138 transitions, 1137 flow [2025-02-06 12:52:52,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 138 transitions, 1125 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-06 12:52:52,468 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 869 flow [2025-02-06 12:52:52,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=869, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2025-02-06 12:52:52,468 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 14 predicate places. [2025-02-06 12:52:52,469 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 869 flow [2025-02-06 12:52:52,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2025-02-06 12:52:52,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:52,469 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] [2025-02-06 12:52:52,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 12:52:52,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:52,670 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:52,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1453331550, now seen corresponding path program 1 times [2025-02-06 12:52:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883232527] [2025-02-06 12:52:52,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:52,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:52,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:52,673 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:52,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 12:52:52,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:52:52,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:52:52,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:52,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:52,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:52:52,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:52,802 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 [2025-02-06 12:52:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:52,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:52,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:52,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883232527] [2025-02-06 12:52:52,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883232527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:52,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:52,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:52:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718675967] [2025-02-06 12:52:52,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:52,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:52:52,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:52,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:52:52,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:52:52,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2025-02-06 12:52:52,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 869 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2025-02-06 12:52:52,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:52,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2025-02-06 12:52:52,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:53,405 INFO L124 PetriNetUnfolderBase]: 1856/3656 cut-off events. [2025-02-06 12:52:53,405 INFO L125 PetriNetUnfolderBase]: For 12216/12216 co-relation queries the response was YES. [2025-02-06 12:52:53,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14357 conditions, 3656 events. 1856/3656 cut-off events. For 12216/12216 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 25967 event pairs, 1150 based on Foata normal form. 1/3648 useless extension candidates. Maximal degree in co-relation 13724. Up to 3073 conditions per place. [2025-02-06 12:52:53,426 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 100 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2025-02-06 12:52:53,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 1131 flow [2025-02-06 12:52:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:52:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:52:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2025-02-06 12:52:53,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-06 12:52:53,427 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 869 flow. Second operand 3 states and 210 transitions. [2025-02-06 12:52:53,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 1131 flow [2025-02-06 12:52:53,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 136 transitions, 1121 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:52:53,456 INFO L231 Difference]: Finished difference. Result has 128 places, 128 transitions, 865 flow [2025-02-06 12:52:53,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=865, PETRI_PLACES=128, PETRI_TRANSITIONS=128} [2025-02-06 12:52:53,456 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 12 predicate places. [2025-02-06 12:52:53,457 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 128 transitions, 865 flow [2025-02-06 12:52:53,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2025-02-06 12:52:53,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:53,457 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] [2025-02-06 12:52:53,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 12:52:53,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:53,657 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:53,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1295027929, now seen corresponding path program 1 times [2025-02-06 12:52:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:53,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158904679] [2025-02-06 12:52:53,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:53,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:53,660 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:53,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 12:52:53,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:52:53,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:52:53,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:53,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:53,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:52:53,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:53,899 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_89| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89| (_ bv0 1))))) is different from true [2025-02-06 12:52:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:53,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:53,914 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158904679] [2025-02-06 12:52:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158904679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:53,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:52:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924240391] [2025-02-06 12:52:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:53,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:53,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:53,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-02-06 12:52:53,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 126 [2025-02-06 12:52:53,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 865 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2025-02-06 12:52:53,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:53,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 126 [2025-02-06 12:52:53,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:54,633 INFO L124 PetriNetUnfolderBase]: 1960/3746 cut-off events. [2025-02-06 12:52:54,633 INFO L125 PetriNetUnfolderBase]: For 12412/12412 co-relation queries the response was YES. [2025-02-06 12:52:54,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 3746 events. 1960/3746 cut-off events. For 12412/12412 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25622 event pairs, 731 based on Foata normal form. 0/3744 useless extension candidates. Maximal degree in co-relation 14198. Up to 1607 conditions per place. [2025-02-06 12:52:54,646 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 114 selfloop transitions, 30 changer transitions 4/166 dead transitions. [2025-02-06 12:52:54,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 166 transitions, 1403 flow [2025-02-06 12:52:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:52:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:52:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2025-02-06 12:52:54,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-02-06 12:52:54,648 INFO L175 Difference]: Start difference. First operand has 128 places, 128 transitions, 865 flow. Second operand 5 states and 252 transitions. [2025-02-06 12:52:54,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 166 transitions, 1403 flow [2025-02-06 12:52:54,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 166 transitions, 1393 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:52:54,671 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 1103 flow [2025-02-06 12:52:54,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1103, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2025-02-06 12:52:54,671 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 17 predicate places. [2025-02-06 12:52:54,671 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 1103 flow [2025-02-06 12:52:54,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 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) [2025-02-06 12:52:54,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:54,672 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] [2025-02-06 12:52:54,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 12:52:54,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:54,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:54,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:54,872 INFO L85 PathProgramCache]: Analyzing trace with hash 928007856, now seen corresponding path program 1 times [2025-02-06 12:52:54,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:54,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729917438] [2025-02-06 12:52:54,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:54,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:54,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:54,875 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:54,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 12:52:54,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 12:52:55,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 12:52:55,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:55,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:55,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:52:55,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:55,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:55,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729917438] [2025-02-06 12:52:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729917438] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:55,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112446185] [2025-02-06 12:52:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:55,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:52:55,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:55,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:52:55,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:52:55,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-02-06 12:52:55,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 1103 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2025-02-06 12:52:55,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:55,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-02-06 12:52:55,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:55,299 INFO L124 PetriNetUnfolderBase]: 225/436 cut-off events. [2025-02-06 12:52:55,299 INFO L125 PetriNetUnfolderBase]: For 1696/1696 co-relation queries the response was YES. [2025-02-06 12:52:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1927 conditions, 436 events. 225/436 cut-off events. For 1696/1696 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1484 event pairs, 31 based on Foata normal form. 36/471 useless extension candidates. Maximal degree in co-relation 1901. Up to 226 conditions per place. [2025-02-06 12:52:55,301 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 64 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2025-02-06 12:52:55,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 96 transitions, 749 flow [2025-02-06 12:52:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:52:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:52:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2025-02-06 12:52:55,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218253968253969 [2025-02-06 12:52:55,302 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 1103 flow. Second operand 4 states and 263 transitions. [2025-02-06 12:52:55,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 96 transitions, 749 flow [2025-02-06 12:52:55,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 544 flow, removed 28 selfloop flow, removed 30 redundant places. [2025-02-06 12:52:55,306 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 304 flow [2025-02-06 12:52:55,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-02-06 12:52:55,307 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2025-02-06 12:52:55,307 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 304 flow [2025-02-06 12:52:55,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2025-02-06 12:52:55,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:55,307 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] [2025-02-06 12:52:55,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 12:52:55,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:55,507 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:55,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash -313760288, now seen corresponding path program 1 times [2025-02-06 12:52:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50785535] [2025-02-06 12:52:55,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:55,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:55,511 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:55,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 12:52:55,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 12:52:55,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 12:52:55,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:55,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:55,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:52:55,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:55,700 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 [2025-02-06 12:52:55,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:55,878 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 [2025-02-06 12:52:55,887 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:52:55,887 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 [2025-02-06 12:52:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:55,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:55,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:55,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50785535] [2025-02-06 12:52:55,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50785535] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:55,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:55,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:52:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624479986] [2025-02-06 12:52:55,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:55,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:52:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:55,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:52:55,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:52:56,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 126 [2025-02-06 12:52:56,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2025-02-06 12:52:56,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:56,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 126 [2025-02-06 12:52:56,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:56,229 INFO L124 PetriNetUnfolderBase]: 225/430 cut-off events. [2025-02-06 12:52:56,229 INFO L125 PetriNetUnfolderBase]: For 983/983 co-relation queries the response was YES. [2025-02-06 12:52:56,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 430 events. 225/430 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1363 event pairs, 87 based on Foata normal form. 4/433 useless extension candidates. Maximal degree in co-relation 1511. Up to 227 conditions per place. [2025-02-06 12:52:56,231 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 55 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2025-02-06 12:52:56,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 472 flow [2025-02-06 12:52:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:52:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:52:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2025-02-06 12:52:56,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37936507936507935 [2025-02-06 12:52:56,232 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 304 flow. Second operand 5 states and 239 transitions. [2025-02-06 12:52:56,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 472 flow [2025-02-06 12:52:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:52:56,235 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 296 flow [2025-02-06 12:52:56,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2025-02-06 12:52:56,236 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -33 predicate places. [2025-02-06 12:52:56,236 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 296 flow [2025-02-06 12:52:56,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2025-02-06 12:52:56,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:56,236 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] [2025-02-06 12:52:56,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:52:56,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:56,436 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:56,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1314973003, now seen corresponding path program 1 times [2025-02-06 12:52:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303153834] [2025-02-06 12:52:56,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:56,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:56,441 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:56,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 12:52:56,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 12:52:56,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 12:52:56,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:56,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:56,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:52:56,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:56,636 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 [2025-02-06 12:52:56,694 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 12:52:56,694 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 [2025-02-06 12:52:56,720 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 [2025-02-06 12:52:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:52:56,723 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:52:56,723 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:52:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303153834] [2025-02-06 12:52:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303153834] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:52:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:52:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:52:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259881109] [2025-02-06 12:52:56,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:52:56,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:52:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:52:56,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:52:56,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:52:56,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 126 [2025-02-06 12:52:56,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2025-02-06 12:52:56,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:52:56,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 126 [2025-02-06 12:52:56,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:52:57,087 INFO L124 PetriNetUnfolderBase]: 225/429 cut-off events. [2025-02-06 12:52:57,087 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2025-02-06 12:52:57,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 429 events. 225/429 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1361 event pairs, 127 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1474. Up to 294 conditions per place. [2025-02-06 12:52:57,089 INFO L140 encePairwiseOnDemand]: 121/126 looper letters, 56 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2025-02-06 12:52:57,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 468 flow [2025-02-06 12:52:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:52:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:52:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2025-02-06 12:52:57,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2025-02-06 12:52:57,090 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 296 flow. Second operand 4 states and 219 transitions. [2025-02-06 12:52:57,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 468 flow [2025-02-06 12:52:57,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:52:57,091 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 286 flow [2025-02-06 12:52:57,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2025-02-06 12:52:57,092 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -35 predicate places. [2025-02-06 12:52:57,092 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 286 flow [2025-02-06 12:52:57,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 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) [2025-02-06 12:52:57,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:52:57,092 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] [2025-02-06 12:52:57,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 12:52:57,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:57,296 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-02-06 12:52:57,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:52:57,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1157989122, now seen corresponding path program 1 times [2025-02-06 12:52:57,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:52:57,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300444737] [2025-02-06 12:52:57,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:52:57,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:52:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:52:57,299 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:52:57,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 12:52:57,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 12:52:57,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 12:52:57,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:52:57,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:52:57,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 12:52:57,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:52:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:52:57,587 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:57,588 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 12:52:57,588 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 [2025-02-06 12:52:57,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:57,645 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 65 treesize of output 85 [2025-02-06 12:52:59,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 12:52:59,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 133 treesize of output 69 [2025-02-06 12:53:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:53:00,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:53:00,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:53:00,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300444737] [2025-02-06 12:53:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300444737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:00,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 12:53:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367155985] [2025-02-06 12:53:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:00,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 12:53:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:53:00,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 12:53:00,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-02-06 12:53:01,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:03,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:06,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:09,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:10,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:12,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:14,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:17,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:18,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:20,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:23,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:26,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:29,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:31,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:33,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:36,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:39,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:41,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:43,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:46,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:48,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:50,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:52,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:54,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:56,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:57,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 12:53:57,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 126 [2025-02-06 12:53:57,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 286 flow. Second operand has 9 states, 9 states have (on average 25.666666666666668) internal successors, (231), 9 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:57,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:57,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 126 [2025-02-06 12:53:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:02,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]