./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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-2_1-container_of.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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:53:07,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:53:07,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:53:07,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:53:07,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:53:07,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:53:07,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:53:07,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:53:07,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:53:07,208 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:53:07,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:53:07,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:53:07,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:53:07,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:53:07,213 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:07,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:07,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:53:07,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:53:07,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:53:07,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:53:07,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:53:07,218 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2025-01-10 00:53:07,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:53:07,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:53:07,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:53:07,508 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:53:07,508 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:53:07,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-01-10 00:53:08,796 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c91117395/986117f802d9413598163f27e32a2b5a/FLAGd0ce75b79 [2025-01-10 00:53:09,088 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:53:09,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-01-10 00:53:09,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c91117395/986117f802d9413598163f27e32a2b5a/FLAGd0ce75b79 [2025-01-10 00:53:09,119 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c91117395/986117f802d9413598163f27e32a2b5a [2025-01-10 00:53:09,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:53:09,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:53:09,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:09,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:53:09,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:53:09,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:09" (1/1) ... [2025-01-10 00:53:09,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31696c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:09, skipping insertion in model container [2025-01-10 00:53:09,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:09" (1/1) ... [2025-01-10 00:53:09,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:09,464 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:09,471 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:09,476 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:09,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:09,493 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) [2025-01-10 00:53:09,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c431cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:09, skipping insertion in model container [2025-01-10 00:53:09,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:09,494 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:53:09,496 INFO L158 Benchmark]: Toolchain (without parser) took 373.20ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 112.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:53:09,496 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 226.5MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:53:09,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.31ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 112.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:53:09,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 226.5MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.31ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 112.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3902]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /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-2_1-container_of.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 edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:53:11,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:53:11,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:53:11,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:53:11,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:53:11,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:53:11,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:53:11,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:53:11,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:53:11,680 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:53:11,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:53:11,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:53:11,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:53:11,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:53:11,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:53:11,682 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:11,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:11,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:11,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:53:11,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:53:11,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:53:11,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:53:11,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:53:11,684 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 -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2025-01-10 00:53:11,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:53:11,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:53:11,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:53:11,945 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:53:11,945 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:53:11,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-01-10 00:53:13,402 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0eb83500b/cc32e6937745414a8a9144a922d44956/FLAG39bcf88df [2025-01-10 00:53:13,705 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:53:13,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2025-01-10 00:53:13,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0eb83500b/cc32e6937745414a8a9144a922d44956/FLAG39bcf88df [2025-01-10 00:53:13,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0eb83500b/cc32e6937745414a8a9144a922d44956 [2025-01-10 00:53:13,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:53:13,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:53:13,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:13,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:53:13,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:53:13,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:13" (1/1) ... [2025-01-10 00:53:13,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d790076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:13, skipping insertion in model container [2025-01-10 00:53:13,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:53:13" (1/1) ... [2025-01-10 00:53:13,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:14,033 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,044 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,052 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:14,078 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:53:14,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:53:14,180 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,188 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,189 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:53:14,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:14,203 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:53:14,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:53:14,270 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:53:14,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14 WrapperNode [2025-01-10 00:53:14,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:53:14,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:53:14,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:53:14,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:53:14,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,311 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 142 [2025-01-10 00:53:14,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:53:14,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:53:14,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:53:14,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:53:14,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,336 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]. [2025-01-10 00:53:14,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:53:14,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:53:14,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:53:14,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:53:14,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (1/1) ... [2025-01-10 00:53:14,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:53:14,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:14,394 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) [2025-01-10 00:53:14,409 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 [2025-01-10 00:53:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-01-10 00:53:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:53:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 00:53:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 00:53:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:53:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:53:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:53:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-10 00:53:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:53:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:53:14,436 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:53:14,683 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:53:14,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:53:15,033 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:53:15,034 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:53:15,139 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:53:15,139 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:53:15,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:53:15 BoogieIcfgContainer [2025-01-10 00:53:15,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:53:15,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:53:15,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:53:15,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:53:15,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:53:13" (1/3) ... [2025-01-10 00:53:15,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c61f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:53:15, skipping insertion in model container [2025-01-10 00:53:15,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:53:14" (2/3) ... [2025-01-10 00:53:15,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c61f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:53:15, skipping insertion in model container [2025-01-10 00:53:15,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:53:15" (3/3) ... [2025-01-10 00:53:15,146 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2025-01-10 00:53:15,156 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:53:15,157 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_1-container_of.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-01-10 00:53:15,157 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:53:15,206 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 00:53:15,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2025-01-10 00:53:15,265 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2025-01-10 00:53:15,267 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:53:15,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 18/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 521 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2025-01-10 00:53:15,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2025-01-10 00:53:15,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2025-01-10 00:53:15,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:53:15,286 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;@25ea981e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:53:15,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-01-10 00:53:15,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:53:15,292 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-01-10 00:53:15,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:53:15,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:15,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:53:15,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:15,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash 492833, now seen corresponding path program 1 times [2025-01-10 00:53:15,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676829197] [2025-01-10 00:53:15,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:15,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:15,312 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) [2025-01-10 00:53:15,315 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 [2025-01-10 00:53:15,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:53:15,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:53:15,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:15,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:15,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:53:15,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:15,455 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 [2025-01-10 00:53:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:15,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:15,467 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676829197] [2025-01-10 00:53:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676829197] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:15,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687741309] [2025-01-10 00:53:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:15,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:15,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:15,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:15,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:15,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:15,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:15,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:15,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:15,941 INFO L124 PetriNetUnfolderBase]: 707/2028 cut-off events. [2025-01-10 00:53:15,941 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-01-10 00:53:15,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 2028 events. 707/2028 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15833 event pairs, 95 based on Foata normal form. 156/1875 useless extension candidates. Maximal degree in co-relation 3071. Up to 1002 conditions per place. [2025-01-10 00:53:15,957 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 54 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2025-01-10 00:53:15,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 360 flow [2025-01-10 00:53:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-01-10 00:53:15,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:53:15,967 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 264 transitions. [2025-01-10 00:53:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 360 flow [2025-01-10 00:53:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 352 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:15,973 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2025-01-10 00:53:15,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2025-01-10 00:53:15,977 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2025-01-10 00:53:15,977 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2025-01-10 00:53:15,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:15,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:15,978 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:53:15,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:53:16,178 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 [2025-01-10 00:53:16,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 492834, now seen corresponding path program 1 times [2025-01-10 00:53:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214700096] [2025-01-10 00:53:16,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:16,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:16,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:16,183 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) [2025-01-10 00:53:16,185 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 [2025-01-10 00:53:16,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:53:16,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:53:16,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:16,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:16,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:53:16,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:16,293 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 [2025-01-10 00:53:16,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:16,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:16,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:16,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214700096] [2025-01-10 00:53:16,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214700096] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:16,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:16,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708987485] [2025-01-10 00:53:16,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:16,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:16,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:16,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:16,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 132 [2025-01-10 00:53:16,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:16,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 132 [2025-01-10 00:53:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:16,754 INFO L124 PetriNetUnfolderBase]: 707/2024 cut-off events. [2025-01-10 00:53:16,754 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-01-10 00:53:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 2024 events. 707/2024 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15812 event pairs, 95 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 488. Up to 1002 conditions per place. [2025-01-10 00:53:16,764 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 52 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2025-01-10 00:53:16,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 344 flow [2025-01-10 00:53:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2025-01-10 00:53:16,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-01-10 00:53:16,766 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 256 transitions. [2025-01-10 00:53:16,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 344 flow [2025-01-10 00:53:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:16,768 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2025-01-10 00:53:16,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2025-01-10 00:53:16,769 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-01-10 00:53:16,769 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2025-01-10 00:53:16,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:16,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:16,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-01-10 00:53:16,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:53:16,970 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 [2025-01-10 00:53:16,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:16,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash 15275921, now seen corresponding path program 1 times [2025-01-10 00:53:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479655921] [2025-01-10 00:53:16,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:16,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:16,974 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) [2025-01-10 00:53:16,982 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 [2025-01-10 00:53:17,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:53:17,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:53:17,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:17,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:17,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:53:17,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:17,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:17,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479655921] [2025-01-10 00:53:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479655921] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:17,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:17,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 00:53:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737082446] [2025-01-10 00:53:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:17,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:17,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:17,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:17,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-01-10 00:53:17,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:17,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:17,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-01-10 00:53:17,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:17,407 INFO L124 PetriNetUnfolderBase]: 767/1786 cut-off events. [2025-01-10 00:53:17,407 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-01-10 00:53:17,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 1786 events. 767/1786 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12089 event pairs, 705 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 1143. Up to 1189 conditions per place. [2025-01-10 00:53:17,415 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 52 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2025-01-10 00:53:17,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 350 flow [2025-01-10 00:53:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-01-10 00:53:17,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:53:17,417 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 264 transitions. [2025-01-10 00:53:17,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 350 flow [2025-01-10 00:53:17,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:17,421 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2025-01-10 00:53:17,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2025-01-10 00:53:17,421 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2025-01-10 00:53:17,422 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2025-01-10 00:53:17,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:17,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:17,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:17,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:17,626 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 [2025-01-10 00:53:17,626 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 918000892, now seen corresponding path program 1 times [2025-01-10 00:53:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073192410] [2025-01-10 00:53:17,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:17,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:17,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:17,630 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) [2025-01-10 00:53:17,631 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 [2025-01-10 00:53:17,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:53:17,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:53:17,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:17,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:17,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:53:17,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:17,767 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:17,768 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:17,768 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:17,771 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 [2025-01-10 00:53:17,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:17,840 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 [2025-01-10 00:53:17,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:17,980 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 [2025-01-10 00:53:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:18,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:18,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073192410] [2025-01-10 00:53:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073192410] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:18,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:18,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125666348] [2025-01-10 00:53:18,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:18,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:18,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:18,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:18,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:18,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:18,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:18,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:18,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:18,844 INFO L124 PetriNetUnfolderBase]: 1153/2649 cut-off events. [2025-01-10 00:53:18,844 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2025-01-10 00:53:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4642 conditions, 2649 events. 1153/2649 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19168 event pairs, 684 based on Foata normal form. 1/2326 useless extension candidates. Maximal degree in co-relation 4313. Up to 1845 conditions per place. [2025-01-10 00:53:18,855 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 52 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2025-01-10 00:53:18,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 354 flow [2025-01-10 00:53:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2025-01-10 00:53:18,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-01-10 00:53:18,857 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 5 states and 380 transitions. [2025-01-10 00:53:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 354 flow [2025-01-10 00:53:18,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 343 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:18,860 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 236 flow [2025-01-10 00:53:18,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2025-01-10 00:53:18,861 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-01-10 00:53:18,861 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 236 flow [2025-01-10 00:53:18,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.2) internal successors, (326), 5 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:18,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:18,861 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:18,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:53:19,062 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 [2025-01-10 00:53:19,062 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:19,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2144599793, now seen corresponding path program 1 times [2025-01-10 00:53:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465513925] [2025-01-10 00:53:19,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:19,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:19,070 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) [2025-01-10 00:53:19,071 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 [2025-01-10 00:53:19,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 00:53:19,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 00:53:19,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:19,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:19,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:53:19,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:19,169 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:19,170 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:19,170 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:19,172 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 [2025-01-10 00:53:19,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:19,325 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 [2025-01-10 00:53:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:19,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:19,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465513925] [2025-01-10 00:53:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465513925] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:19,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:19,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391676042] [2025-01-10 00:53:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:19,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:19,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:19,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:19,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:19,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:19,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:19,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:19,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:20,012 INFO L124 PetriNetUnfolderBase]: 1321/2937 cut-off events. [2025-01-10 00:53:20,012 INFO L125 PetriNetUnfolderBase]: For 245/251 co-relation queries the response was YES. [2025-01-10 00:53:20,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 2937 events. 1321/2937 cut-off events. For 245/251 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20985 event pairs, 796 based on Foata normal form. 6/2502 useless extension candidates. Maximal degree in co-relation 2255. Up to 2115 conditions per place. [2025-01-10 00:53:20,026 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 54 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-01-10 00:53:20,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 371 flow [2025-01-10 00:53:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2025-01-10 00:53:20,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543939393939394 [2025-01-10 00:53:20,028 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 236 flow. Second operand 5 states and 359 transitions. [2025-01-10 00:53:20,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 371 flow [2025-01-10 00:53:20,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 363 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:20,030 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 240 flow [2025-01-10 00:53:20,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2025-01-10 00:53:20,030 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2025-01-10 00:53:20,030 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 240 flow [2025-01-10 00:53:20,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:20,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:20,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:20,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:53:20,231 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 [2025-01-10 00:53:20,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:20,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash -859869638, now seen corresponding path program 1 times [2025-01-10 00:53:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020674817] [2025-01-10 00:53:20,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:20,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:20,235 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) [2025-01-10 00:53:20,236 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 [2025-01-10 00:53:20,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:53:20,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:53:20,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:20,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:20,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:53:20,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:20,382 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 [2025-01-10 00:53:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:20,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:20,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020674817] [2025-01-10 00:53:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020674817] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819975015] [2025-01-10 00:53:20,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:20,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:20,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:20,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:20,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2025-01-10 00:53:20,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:20,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:20,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2025-01-10 00:53:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:20,784 INFO L124 PetriNetUnfolderBase]: 979/2255 cut-off events. [2025-01-10 00:53:20,785 INFO L125 PetriNetUnfolderBase]: For 75/78 co-relation queries the response was YES. [2025-01-10 00:53:20,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 2255 events. 979/2255 cut-off events. For 75/78 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15662 event pairs, 748 based on Foata normal form. 0/2062 useless extension candidates. Maximal degree in co-relation 1943. Up to 1391 conditions per place. [2025-01-10 00:53:20,797 INFO L140 encePairwiseOnDemand]: 123/132 looper letters, 52 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-01-10 00:53:20,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 362 flow [2025-01-10 00:53:20,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2025-01-10 00:53:20,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-01-10 00:53:20,800 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 240 flow. Second operand 3 states and 246 transitions. [2025-01-10 00:53:20,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 362 flow [2025-01-10 00:53:20,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:20,802 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 222 flow [2025-01-10 00:53:20,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2025-01-10 00:53:20,803 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -25 predicate places. [2025-01-10 00:53:20,803 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 222 flow [2025-01-10 00:53:20,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:20,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:20,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:20,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:53:21,009 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 [2025-01-10 00:53:21,009 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:21,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash -859869637, now seen corresponding path program 1 times [2025-01-10 00:53:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045696402] [2025-01-10 00:53:21,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:21,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:21,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:21,015 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) [2025-01-10 00:53:21,016 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 [2025-01-10 00:53:21,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:53:21,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:53:21,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:21,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:21,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:53:21,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:21,110 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 [2025-01-10 00:53:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:21,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:21,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045696402] [2025-01-10 00:53:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045696402] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:21,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:21,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443926545] [2025-01-10 00:53:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:21,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:21,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:21,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:21,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:21,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:21,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:21,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:21,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:21,536 INFO L124 PetriNetUnfolderBase]: 835/1960 cut-off events. [2025-01-10 00:53:21,536 INFO L125 PetriNetUnfolderBase]: For 92/95 co-relation queries the response was YES. [2025-01-10 00:53:21,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1960 events. 835/1960 cut-off events. For 92/95 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13322 event pairs, 538 based on Foata normal form. 90/1867 useless extension candidates. Maximal degree in co-relation 2855. Up to 1012 conditions per place. [2025-01-10 00:53:21,544 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 63 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2025-01-10 00:53:21,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 390 flow [2025-01-10 00:53:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2025-01-10 00:53:21,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2025-01-10 00:53:21,547 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 222 flow. Second operand 3 states and 261 transitions. [2025-01-10 00:53:21,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 390 flow [2025-01-10 00:53:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:21,550 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 235 flow [2025-01-10 00:53:21,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2025-01-10 00:53:21,551 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-01-10 00:53:21,552 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 235 flow [2025-01-10 00:53:21,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:21,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:21,552 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:21,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:53:21,753 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 [2025-01-10 00:53:21,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:21,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash -797998778, now seen corresponding path program 1 times [2025-01-10 00:53:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857661969] [2025-01-10 00:53:21,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:21,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:21,758 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) [2025-01-10 00:53:21,759 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 [2025-01-10 00:53:21,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 00:53:21,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 00:53:21,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:21,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:21,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 00:53:21,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:21,864 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 [2025-01-10 00:53:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:21,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:21,945 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857661969] [2025-01-10 00:53:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857661969] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679822001] [2025-01-10 00:53:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:21,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:21,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:21,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:22,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2025-01-10 00:53:22,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 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) [2025-01-10 00:53:22,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:22,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2025-01-10 00:53:22,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:22,779 INFO L124 PetriNetUnfolderBase]: 840/2065 cut-off events. [2025-01-10 00:53:22,779 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2025-01-10 00:53:22,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 2065 events. 840/2065 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14392 event pairs, 129 based on Foata normal form. 145/2134 useless extension candidates. Maximal degree in co-relation 2614. Up to 948 conditions per place. [2025-01-10 00:53:22,788 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 88 selfloop transitions, 11 changer transitions 2/150 dead transitions. [2025-01-10 00:53:22,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 564 flow [2025-01-10 00:53:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2025-01-10 00:53:22,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6201298701298701 [2025-01-10 00:53:22,791 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 235 flow. Second operand 7 states and 573 transitions. [2025-01-10 00:53:22,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 564 flow [2025-01-10 00:53:22,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 150 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:53:22,794 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 295 flow [2025-01-10 00:53:22,795 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2025-01-10 00:53:22,795 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -17 predicate places. [2025-01-10 00:53:22,795 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 295 flow [2025-01-10 00:53:22,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 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) [2025-01-10 00:53:22,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:22,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:22,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:53:22,997 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 [2025-01-10 00:53:22,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:22,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -797998779, now seen corresponding path program 1 times [2025-01-10 00:53:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913480254] [2025-01-10 00:53:22,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:23,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:23,002 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) [2025-01-10 00:53:23,003 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 [2025-01-10 00:53:23,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 00:53:23,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 00:53:23,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:23,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:23,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 00:53:23,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:23,121 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 [2025-01-10 00:53:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:23,184 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:23,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913480254] [2025-01-10 00:53:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913480254] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:23,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:23,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376490843] [2025-01-10 00:53:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:23,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:23,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:23,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:23,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:23,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2025-01-10 00:53:23,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 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) [2025-01-10 00:53:23,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:23,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2025-01-10 00:53:23,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:24,166 INFO L124 PetriNetUnfolderBase]: 1177/2657 cut-off events. [2025-01-10 00:53:24,166 INFO L125 PetriNetUnfolderBase]: For 674/677 co-relation queries the response was YES. [2025-01-10 00:53:24,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 2657 events. 1177/2657 cut-off events. For 674/677 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18679 event pairs, 139 based on Foata normal form. 64/2603 useless extension candidates. Maximal degree in co-relation 3341. Up to 1078 conditions per place. [2025-01-10 00:53:24,173 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 100 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2025-01-10 00:53:24,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 659 flow [2025-01-10 00:53:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 639 transitions. [2025-01-10 00:53:24,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6051136363636364 [2025-01-10 00:53:24,175 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 295 flow. Second operand 8 states and 639 transitions. [2025-01-10 00:53:24,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 659 flow [2025-01-10 00:53:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 659 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:53:24,178 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 399 flow [2025-01-10 00:53:24,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=399, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-01-10 00:53:24,179 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2025-01-10 00:53:24,179 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 399 flow [2025-01-10 00:53:24,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 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) [2025-01-10 00:53:24,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:24,179 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:53:24,382 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 [2025-01-10 00:53:24,383 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:24,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1027020276, now seen corresponding path program 1 times [2025-01-10 00:53:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908742191] [2025-01-10 00:53:24,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:24,386 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) [2025-01-10 00:53:24,387 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 [2025-01-10 00:53:24,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 00:53:24,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:53:24,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:24,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:24,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 00:53:24,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:24,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:24,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908742191] [2025-01-10 00:53:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908742191] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:24,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:24,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115380919] [2025-01-10 00:53:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:24,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:53:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:24,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:53:24,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:53:24,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 132 [2025-01-10 00:53:24,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 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) [2025-01-10 00:53:24,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:24,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 132 [2025-01-10 00:53:24,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:25,510 INFO L124 PetriNetUnfolderBase]: 1336/3053 cut-off events. [2025-01-10 00:53:25,510 INFO L125 PetriNetUnfolderBase]: For 2571/2697 co-relation queries the response was YES. [2025-01-10 00:53:25,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6731 conditions, 3053 events. 1336/3053 cut-off events. For 2571/2697 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 22270 event pairs, 340 based on Foata normal form. 98/3084 useless extension candidates. Maximal degree in co-relation 5904. Up to 1093 conditions per place. [2025-01-10 00:53:25,521 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 113 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2025-01-10 00:53:25,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 179 transitions, 906 flow [2025-01-10 00:53:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 630 transitions. [2025-01-10 00:53:25,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2025-01-10 00:53:25,523 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 399 flow. Second operand 8 states and 630 transitions. [2025-01-10 00:53:25,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 179 transitions, 906 flow [2025-01-10 00:53:25,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 179 transitions, 879 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:25,528 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 532 flow [2025-01-10 00:53:25,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2025-01-10 00:53:25,529 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 2 predicate places. [2025-01-10 00:53:25,529 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 532 flow [2025-01-10 00:53:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 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) [2025-01-10 00:53:25,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:25,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:25,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 00:53:25,730 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 [2025-01-10 00:53:25,730 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:25,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1027020275, now seen corresponding path program 1 times [2025-01-10 00:53:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280616686] [2025-01-10 00:53:25,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:25,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:25,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:25,733 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) [2025-01-10 00:53:25,735 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 [2025-01-10 00:53:25,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 00:53:25,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:53:25,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:25,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:25,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 00:53:25,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:25,844 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 [2025-01-10 00:53:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:25,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:25,914 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280616686] [2025-01-10 00:53:25,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280616686] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610981055] [2025-01-10 00:53:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:25,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:25,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:25,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:26,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2025-01-10 00:53:26,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 532 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2025-01-10 00:53:26,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:26,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2025-01-10 00:53:26,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:26,802 INFO L124 PetriNetUnfolderBase]: 1002/2492 cut-off events. [2025-01-10 00:53:26,802 INFO L125 PetriNetUnfolderBase]: For 2865/3059 co-relation queries the response was YES. [2025-01-10 00:53:26,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5980 conditions, 2492 events. 1002/2492 cut-off events. For 2865/3059 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18427 event pairs, 160 based on Foata normal form. 330/2781 useless extension candidates. Maximal degree in co-relation 5370. Up to 1228 conditions per place. [2025-01-10 00:53:26,822 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 98 selfloop transitions, 17 changer transitions 1/169 dead transitions. [2025-01-10 00:53:26,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 169 transitions, 912 flow [2025-01-10 00:53:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2025-01-10 00:53:26,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222943722943723 [2025-01-10 00:53:26,828 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 532 flow. Second operand 7 states and 575 transitions. [2025-01-10 00:53:26,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 169 transitions, 912 flow [2025-01-10 00:53:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 169 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:53:26,841 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 615 flow [2025-01-10 00:53:26,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=615, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2025-01-10 00:53:26,842 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2025-01-10 00:53:26,843 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 615 flow [2025-01-10 00:53:26,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2025-01-10 00:53:26,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:26,843 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] [2025-01-10 00:53:26,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 00:53:27,043 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 [2025-01-10 00:53:27,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:27,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2035896848, now seen corresponding path program 1 times [2025-01-10 00:53:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:27,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021910764] [2025-01-10 00:53:27,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:27,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:27,047 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) [2025-01-10 00:53:27,048 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 [2025-01-10 00:53:27,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 00:53:27,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 00:53:27,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:27,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:27,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:53:27,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:27,174 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:27,175 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:27,175 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:27,176 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 [2025-01-10 00:53:27,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:27,212 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 [2025-01-10 00:53:27,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:27,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 53 [2025-01-10 00:53:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:27,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:27,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:27,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021910764] [2025-01-10 00:53:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021910764] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:27,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:27,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:53:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728549564] [2025-01-10 00:53:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:27,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:53:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:27,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:53:27,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:53:27,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2025-01-10 00:53:27,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:27,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:27,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2025-01-10 00:53:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:29,509 INFO L124 PetriNetUnfolderBase]: 2137/4104 cut-off events. [2025-01-10 00:53:29,509 INFO L125 PetriNetUnfolderBase]: For 6571/6866 co-relation queries the response was YES. [2025-01-10 00:53:29,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11289 conditions, 4104 events. 2137/4104 cut-off events. For 6571/6866 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 27842 event pairs, 627 based on Foata normal form. 35/3962 useless extension candidates. Maximal degree in co-relation 10414. Up to 1772 conditions per place. [2025-01-10 00:53:29,523 INFO L140 encePairwiseOnDemand]: 107/132 looper letters, 116 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2025-01-10 00:53:29,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 204 transitions, 1288 flow [2025-01-10 00:53:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:53:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 00:53:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 601 transitions. [2025-01-10 00:53:29,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691287878787878 [2025-01-10 00:53:29,526 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 615 flow. Second operand 8 states and 601 transitions. [2025-01-10 00:53:29,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 204 transitions, 1288 flow [2025-01-10 00:53:29,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 204 transitions, 1258 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 00:53:29,537 INFO L231 Difference]: Finished difference. Result has 138 places, 154 transitions, 939 flow [2025-01-10 00:53:29,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=138, PETRI_TRANSITIONS=154} [2025-01-10 00:53:29,538 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 16 predicate places. [2025-01-10 00:53:29,539 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 154 transitions, 939 flow [2025-01-10 00:53:29,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:29,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:29,539 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] [2025-01-10 00:53:29,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:29,740 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 [2025-01-10 00:53:29,740 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:29,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:29,741 INFO L85 PathProgramCache]: Analyzing trace with hash 627245120, now seen corresponding path program 1 times [2025-01-10 00:53:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733677701] [2025-01-10 00:53:29,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:29,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:29,743 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) [2025-01-10 00:53:29,745 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 [2025-01-10 00:53:29,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 00:53:29,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 00:53:29,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:29,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:29,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 00:53:29,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:29,862 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 [2025-01-10 00:53:29,869 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 [2025-01-10 00:53:30,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:30,101 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 [2025-01-10 00:53:30,116 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:30,116 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 [2025-01-10 00:53:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:30,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:30,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733677701] [2025-01-10 00:53:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733677701] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:30,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609554581] [2025-01-10 00:53:30,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:30,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 00:53:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:30,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 00:53:30,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:53:30,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2025-01-10 00:53:30,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 154 transitions, 939 flow. Second operand has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 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) [2025-01-10 00:53:30,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:30,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2025-01-10 00:53:30,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:31,335 INFO L124 PetriNetUnfolderBase]: 2217/4570 cut-off events. [2025-01-10 00:53:31,335 INFO L125 PetriNetUnfolderBase]: For 8287/8515 co-relation queries the response was YES. [2025-01-10 00:53:31,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14069 conditions, 4570 events. 2217/4570 cut-off events. For 8287/8515 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 34032 event pairs, 388 based on Foata normal form. 71/4568 useless extension candidates. Maximal degree in co-relation 12677. Up to 1922 conditions per place. [2025-01-10 00:53:31,352 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 154 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2025-01-10 00:53:31,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 232 transitions, 1594 flow [2025-01-10 00:53:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:53:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 00:53:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 690 transitions. [2025-01-10 00:53:31,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2025-01-10 00:53:31,362 INFO L175 Difference]: Start difference. First operand has 138 places, 154 transitions, 939 flow. Second operand 9 states and 690 transitions. [2025-01-10 00:53:31,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 232 transitions, 1594 flow [2025-01-10 00:53:31,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 232 transitions, 1565 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:31,388 INFO L231 Difference]: Finished difference. Result has 142 places, 152 transitions, 958 flow [2025-01-10 00:53:31,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=142, PETRI_TRANSITIONS=152} [2025-01-10 00:53:31,392 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 20 predicate places. [2025-01-10 00:53:31,392 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 152 transitions, 958 flow [2025-01-10 00:53:31,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 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) [2025-01-10 00:53:31,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:31,392 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] [2025-01-10 00:53:31,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:53:31,593 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 [2025-01-10 00:53:31,593 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:31,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1670382524, now seen corresponding path program 1 times [2025-01-10 00:53:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:31,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651157879] [2025-01-10 00:53:31,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:31,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:31,597 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) [2025-01-10 00:53:31,598 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 [2025-01-10 00:53:31,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 00:53:31,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 00:53:31,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:31,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:31,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-10 00:53:31,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:31,721 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 [2025-01-10 00:53:31,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:31,852 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 [2025-01-10 00:53:31,859 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:31,859 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 [2025-01-10 00:53:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:31,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:31,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:31,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651157879] [2025-01-10 00:53:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651157879] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:31,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:53:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140910416] [2025-01-10 00:53:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:31,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:53:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:31,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:53:31,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:53:32,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-01-10 00:53:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 152 transitions, 958 flow. Second operand has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 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) [2025-01-10 00:53:32,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:32,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-01-10 00:53:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:33,451 INFO L124 PetriNetUnfolderBase]: 2531/5164 cut-off events. [2025-01-10 00:53:33,451 INFO L125 PetriNetUnfolderBase]: For 10259/10571 co-relation queries the response was YES. [2025-01-10 00:53:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15878 conditions, 5164 events. 2531/5164 cut-off events. For 10259/10571 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 39545 event pairs, 701 based on Foata normal form. 92/5186 useless extension candidates. Maximal degree in co-relation 13219. Up to 1928 conditions per place. [2025-01-10 00:53:33,471 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 161 selfloop transitions, 24 changer transitions 0/235 dead transitions. [2025-01-10 00:53:33,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 235 transitions, 1652 flow [2025-01-10 00:53:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 00:53:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 00:53:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2025-01-10 00:53:33,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5715488215488216 [2025-01-10 00:53:33,475 INFO L175 Difference]: Start difference. First operand has 142 places, 152 transitions, 958 flow. Second operand 9 states and 679 transitions. [2025-01-10 00:53:33,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 235 transitions, 1652 flow [2025-01-10 00:53:33,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 235 transitions, 1594 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-10 00:53:33,506 INFO L231 Difference]: Finished difference. Result has 140 places, 150 transitions, 956 flow [2025-01-10 00:53:33,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=140, PETRI_TRANSITIONS=150} [2025-01-10 00:53:33,507 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 18 predicate places. [2025-01-10 00:53:33,507 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 150 transitions, 956 flow [2025-01-10 00:53:33,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 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) [2025-01-10 00:53:33,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:33,508 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] [2025-01-10 00:53:33,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:53:33,708 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 [2025-01-10 00:53:33,709 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:33,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2073608629, now seen corresponding path program 1 times [2025-01-10 00:53:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577186628] [2025-01-10 00:53:33,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:33,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:33,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:33,713 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) [2025-01-10 00:53:33,714 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 [2025-01-10 00:53:33,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 00:53:33,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 00:53:33,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:33,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:33,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:53:33,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:33,845 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:33,846 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:33,846 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:33,847 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 [2025-01-10 00:53:33,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:33,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2025-01-10 00:53:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:33,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:33,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577186628] [2025-01-10 00:53:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577186628] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:33,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 00:53:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839095428] [2025-01-10 00:53:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:33,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:33,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:33,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:53:34,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:34,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 150 transitions, 956 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:34,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:34,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:34,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:35,800 INFO L124 PetriNetUnfolderBase]: 2959/5702 cut-off events. [2025-01-10 00:53:35,800 INFO L125 PetriNetUnfolderBase]: For 12237/12726 co-relation queries the response was YES. [2025-01-10 00:53:35,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18855 conditions, 5702 events. 2959/5702 cut-off events. For 12237/12726 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 41967 event pairs, 1047 based on Foata normal form. 202/5843 useless extension candidates. Maximal degree in co-relation 16150. Up to 2612 conditions per place. [2025-01-10 00:53:35,825 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 122 selfloop transitions, 72 changer transitions 0/229 dead transitions. [2025-01-10 00:53:35,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 229 transitions, 1783 flow [2025-01-10 00:53:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 00:53:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 00:53:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2025-01-10 00:53:35,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5800865800865801 [2025-01-10 00:53:35,830 INFO L175 Difference]: Start difference. First operand has 140 places, 150 transitions, 956 flow. Second operand 7 states and 536 transitions. [2025-01-10 00:53:35,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 229 transitions, 1783 flow [2025-01-10 00:53:35,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 229 transitions, 1732 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 00:53:35,870 INFO L231 Difference]: Finished difference. Result has 145 places, 179 transitions, 1439 flow [2025-01-10 00:53:35,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1439, PETRI_PLACES=145, PETRI_TRANSITIONS=179} [2025-01-10 00:53:35,870 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2025-01-10 00:53:35,870 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 179 transitions, 1439 flow [2025-01-10 00:53:35,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:35,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:35,871 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] [2025-01-10 00:53:35,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:53:36,071 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 [2025-01-10 00:53:36,071 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:36,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash -142753304, now seen corresponding path program 1 times [2025-01-10 00:53:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:36,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329426772] [2025-01-10 00:53:36,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:36,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:36,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:36,074 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) [2025-01-10 00:53:36,075 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 [2025-01-10 00:53:36,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 00:53:36,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:53:36,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:36,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:36,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:53:36,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:36,290 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_79| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_79|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_79| (_ bv0 1)) |c_#valid|))) is different from true [2025-01-10 00:53:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:36,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:36,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:36,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329426772] [2025-01-10 00:53:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329426772] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402227234] [2025-01-10 00:53:36,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:36,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:53:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:36,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:53:36,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-01-10 00:53:36,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 132 [2025-01-10 00:53:36,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 179 transitions, 1439 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:36,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:36,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 132 [2025-01-10 00:53:36,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:37,448 INFO L124 PetriNetUnfolderBase]: 4240/7756 cut-off events. [2025-01-10 00:53:37,449 INFO L125 PetriNetUnfolderBase]: For 21932/21936 co-relation queries the response was YES. [2025-01-10 00:53:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29210 conditions, 7756 events. 4240/7756 cut-off events. For 21932/21936 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 57346 event pairs, 1790 based on Foata normal form. 1/7743 useless extension candidates. Maximal degree in co-relation 24484. Up to 3737 conditions per place. [2025-01-10 00:53:37,488 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 163 selfloop transitions, 37 changer transitions 4/229 dead transitions. [2025-01-10 00:53:37,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 229 transitions, 2109 flow [2025-01-10 00:53:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:53:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:53:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2025-01-10 00:53:37,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-01-10 00:53:37,493 INFO L175 Difference]: Start difference. First operand has 145 places, 179 transitions, 1439 flow. Second operand 5 states and 310 transitions. [2025-01-10 00:53:37,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 229 transitions, 2109 flow [2025-01-10 00:53:37,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 229 transitions, 2093 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-01-10 00:53:37,659 INFO L231 Difference]: Finished difference. Result has 152 places, 197 transitions, 1707 flow [2025-01-10 00:53:37,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1707, PETRI_PLACES=152, PETRI_TRANSITIONS=197} [2025-01-10 00:53:37,660 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 30 predicate places. [2025-01-10 00:53:37,661 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 197 transitions, 1707 flow [2025-01-10 00:53:37,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:37,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:37,661 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] [2025-01-10 00:53:37,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 00:53:37,862 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 [2025-01-10 00:53:37,862 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:37,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1370943766, now seen corresponding path program 1 times [2025-01-10 00:53:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:37,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526258325] [2025-01-10 00:53:37,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:37,867 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) [2025-01-10 00:53:37,869 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 [2025-01-10 00:53:37,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 00:53:38,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 00:53:38,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:38,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:38,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:53:38,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:38,032 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 [2025-01-10 00:53:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:38,045 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:38,045 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526258325] [2025-01-10 00:53:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526258325] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:38,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224328639] [2025-01-10 00:53:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:38,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:38,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:38,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:38,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-01-10 00:53:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 197 transitions, 1707 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:38,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:38,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-01-10 00:53:38,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:39,079 INFO L124 PetriNetUnfolderBase]: 2928/5671 cut-off events. [2025-01-10 00:53:39,080 INFO L125 PetriNetUnfolderBase]: For 24124/24698 co-relation queries the response was YES. [2025-01-10 00:53:39,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24422 conditions, 5671 events. 2928/5671 cut-off events. For 24124/24698 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 42604 event pairs, 1480 based on Foata normal form. 145/5632 useless extension candidates. Maximal degree in co-relation 20577. Up to 3902 conditions per place. [2025-01-10 00:53:39,109 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2025-01-10 00:53:39,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 203 transitions, 1973 flow [2025-01-10 00:53:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-01-10 00:53:39,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-01-10 00:53:39,111 INFO L175 Difference]: Start difference. First operand has 152 places, 197 transitions, 1707 flow. Second operand 3 states and 257 transitions. [2025-01-10 00:53:39,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 203 transitions, 1973 flow [2025-01-10 00:53:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 203 transitions, 1888 flow, removed 20 selfloop flow, removed 4 redundant places. [2025-01-10 00:53:39,229 INFO L231 Difference]: Finished difference. Result has 148 places, 195 transitions, 1628 flow [2025-01-10 00:53:39,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1628, PETRI_PLACES=148, PETRI_TRANSITIONS=195} [2025-01-10 00:53:39,230 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 26 predicate places. [2025-01-10 00:53:39,230 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 195 transitions, 1628 flow [2025-01-10 00:53:39,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:39,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:39,230 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] [2025-01-10 00:53:39,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 00:53:39,430 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 [2025-01-10 00:53:39,431 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:39,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1265102467, now seen corresponding path program 1 times [2025-01-10 00:53:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:39,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333100050] [2025-01-10 00:53:39,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:39,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:39,435 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) [2025-01-10 00:53:39,436 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 [2025-01-10 00:53:39,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 00:53:39,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 00:53:39,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:39,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:39,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:53:39,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:39,607 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 [2025-01-10 00:53:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:39,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:39,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333100050] [2025-01-10 00:53:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333100050] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:39,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:39,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:53:39,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072286036] [2025-01-10 00:53:39,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:39,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:53:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:39,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:53:39,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:53:39,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 132 [2025-01-10 00:53:39,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 195 transitions, 1628 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:39,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:39,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 132 [2025-01-10 00:53:39,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:40,414 INFO L124 PetriNetUnfolderBase]: 2928/5663 cut-off events. [2025-01-10 00:53:40,414 INFO L125 PetriNetUnfolderBase]: For 22181/22755 co-relation queries the response was YES. [2025-01-10 00:53:40,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24028 conditions, 5663 events. 2928/5663 cut-off events. For 22181/22755 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42488 event pairs, 1480 based on Foata normal form. 145/5624 useless extension candidates. Maximal degree in co-relation 23344. Up to 3902 conditions per place. [2025-01-10 00:53:40,436 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 110 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2025-01-10 00:53:40,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 201 transitions, 1894 flow [2025-01-10 00:53:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:53:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:53:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2025-01-10 00:53:40,437 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.648989898989899 [2025-01-10 00:53:40,437 INFO L175 Difference]: Start difference. First operand has 148 places, 195 transitions, 1628 flow. Second operand 3 states and 257 transitions. [2025-01-10 00:53:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 201 transitions, 1894 flow [2025-01-10 00:53:40,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 201 transitions, 1884 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:40,516 INFO L231 Difference]: Finished difference. Result has 146 places, 193 transitions, 1624 flow [2025-01-10 00:53:40,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1624, PETRI_PLACES=146, PETRI_TRANSITIONS=193} [2025-01-10 00:53:40,517 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 24 predicate places. [2025-01-10 00:53:40,517 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 193 transitions, 1624 flow [2025-01-10 00:53:40,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:40,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:40,517 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] [2025-01-10 00:53:40,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:40,718 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 [2025-01-10 00:53:40,718 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:40,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash 454023381, now seen corresponding path program 1 times [2025-01-10 00:53:40,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:40,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960177963] [2025-01-10 00:53:40,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:40,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:40,724 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) [2025-01-10 00:53:40,725 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 [2025-01-10 00:53:40,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 00:53:40,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 00:53:40,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:40,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:40,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:53:40,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:40,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:40,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:40,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960177963] [2025-01-10 00:53:40,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960177963] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:40,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:40,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:53:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101893242] [2025-01-10 00:53:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:40,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:40,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:40,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:40,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-01-10 00:53:40,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 193 transitions, 1624 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:40,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:40,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-01-10 00:53:40,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:41,147 INFO L124 PetriNetUnfolderBase]: 266/540 cut-off events. [2025-01-10 00:53:41,148 INFO L125 PetriNetUnfolderBase]: For 1568/1628 co-relation queries the response was YES. [2025-01-10 00:53:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 540 events. 266/540 cut-off events. For 1568/1628 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2156 event pairs, 50 based on Foata normal form. 49/569 useless extension candidates. Maximal degree in co-relation 2151. Up to 269 conditions per place. [2025-01-10 00:53:41,151 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 60 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2025-01-10 00:53:41,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 100 transitions, 747 flow [2025-01-10 00:53:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2025-01-10 00:53:41,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2025-01-10 00:53:41,152 INFO L175 Difference]: Start difference. First operand has 146 places, 193 transitions, 1624 flow. Second operand 4 states and 335 transitions. [2025-01-10 00:53:41,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 100 transitions, 747 flow [2025-01-10 00:53:41,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 490 flow, removed 26 selfloop flow, removed 41 redundant places. [2025-01-10 00:53:41,161 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 300 flow [2025-01-10 00:53:41,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2025-01-10 00:53:41,162 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -32 predicate places. [2025-01-10 00:53:41,162 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 300 flow [2025-01-10 00:53:41,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:41,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:41,162 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:41,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:41,362 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 [2025-01-10 00:53:41,363 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:41,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash 249919656, now seen corresponding path program 1 times [2025-01-10 00:53:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:41,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211455470] [2025-01-10 00:53:41,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:41,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:41,366 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) [2025-01-10 00:53:41,368 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 [2025-01-10 00:53:41,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:41,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:41,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:41,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:41,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 00:53:41,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:41,554 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 [2025-01-10 00:53:41,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:53:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:41,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:41,704 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211455470] [2025-01-10 00:53:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211455470] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:53:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684340274] [2025-01-10 00:53:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:41,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:53:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:41,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:53:41,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:53:42,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:42,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:42,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:42,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:42,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:43,316 INFO L124 PetriNetUnfolderBase]: 561/1091 cut-off events. [2025-01-10 00:53:43,316 INFO L125 PetriNetUnfolderBase]: For 1576/1589 co-relation queries the response was YES. [2025-01-10 00:53:43,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3304 conditions, 1091 events. 561/1091 cut-off events. For 1576/1589 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5676 event pairs, 78 based on Foata normal form. 14/1084 useless extension candidates. Maximal degree in co-relation 3294. Up to 336 conditions per place. [2025-01-10 00:53:43,320 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 85 selfloop transitions, 36 changer transitions 0/152 dead transitions. [2025-01-10 00:53:43,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 878 flow [2025-01-10 00:53:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 00:53:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 00:53:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 808 transitions. [2025-01-10 00:53:43,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564738292011019 [2025-01-10 00:53:43,325 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 300 flow. Second operand 11 states and 808 transitions. [2025-01-10 00:53:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 878 flow [2025-01-10 00:53:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 152 transitions, 832 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:43,328 INFO L231 Difference]: Finished difference. Result has 104 places, 108 transitions, 579 flow [2025-01-10 00:53:43,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=579, PETRI_PLACES=104, PETRI_TRANSITIONS=108} [2025-01-10 00:53:43,333 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2025-01-10 00:53:43,333 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 108 transitions, 579 flow [2025-01-10 00:53:43,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:43,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:43,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:43,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-10 00:53:43,533 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 [2025-01-10 00:53:43,533 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:43,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1954481916, now seen corresponding path program 2 times [2025-01-10 00:53:43,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:43,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402531033] [2025-01-10 00:53:43,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:53:43,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:43,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:43,537 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) [2025-01-10 00:53:43,538 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 [2025-01-10 00:53:43,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:43,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:43,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 00:53:43,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:43,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 00:53:43,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:43,701 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 [2025-01-10 00:53:43,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:53:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:43,863 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:43,863 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402531033] [2025-01-10 00:53:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402531033] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:43,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:53:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279804539] [2025-01-10 00:53:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:43,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:53:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:43,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:53:43,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:53:44,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:44,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 108 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:44,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:44,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:44,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:45,617 INFO L124 PetriNetUnfolderBase]: 619/1184 cut-off events. [2025-01-10 00:53:45,618 INFO L125 PetriNetUnfolderBase]: For 3363/3388 co-relation queries the response was YES. [2025-01-10 00:53:45,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 1184 events. 619/1184 cut-off events. For 3363/3388 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6224 event pairs, 44 based on Foata normal form. 27/1197 useless extension candidates. Maximal degree in co-relation 4472. Up to 355 conditions per place. [2025-01-10 00:53:45,622 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 89 selfloop transitions, 63 changer transitions 0/183 dead transitions. [2025-01-10 00:53:45,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 1405 flow [2025-01-10 00:53:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:53:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:53:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 870 transitions. [2025-01-10 00:53:45,623 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2025-01-10 00:53:45,623 INFO L175 Difference]: Start difference. First operand has 104 places, 108 transitions, 579 flow. Second operand 12 states and 870 transitions. [2025-01-10 00:53:45,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 1405 flow [2025-01-10 00:53:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 183 transitions, 1363 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:45,628 INFO L231 Difference]: Finished difference. Result has 116 places, 137 transitions, 980 flow [2025-01-10 00:53:45,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=980, PETRI_PLACES=116, PETRI_TRANSITIONS=137} [2025-01-10 00:53:45,628 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -6 predicate places. [2025-01-10 00:53:45,628 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 137 transitions, 980 flow [2025-01-10 00:53:45,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:45,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:45,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:45,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:45,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:45,833 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:45,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash 746547989, now seen corresponding path program 1 times [2025-01-10 00:53:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820823855] [2025-01-10 00:53:45,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:45,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:45,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:45,836 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:45,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-10 00:53:45,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:46,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:46,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:46,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:46,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:53:46,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:46,010 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 [2025-01-10 00:53:46,015 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 [2025-01-10 00:53:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:46,168 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 [2025-01-10 00:53:46,175 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:53:46,175 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 [2025-01-10 00:53:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:46,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:46,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820823855] [2025-01-10 00:53:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820823855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424919918] [2025-01-10 00:53:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:46,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:46,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:46,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:46,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 132 [2025-01-10 00:53:46,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 137 transitions, 980 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:46,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:46,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 132 [2025-01-10 00:53:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:46,568 INFO L124 PetriNetUnfolderBase]: 614/1157 cut-off events. [2025-01-10 00:53:46,568 INFO L125 PetriNetUnfolderBase]: For 4676/4712 co-relation queries the response was YES. [2025-01-10 00:53:46,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5218 conditions, 1157 events. 614/1157 cut-off events. For 4676/4712 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5927 event pairs, 349 based on Foata normal form. 8/1126 useless extension candidates. Maximal degree in co-relation 5196. Up to 983 conditions per place. [2025-01-10 00:53:46,573 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 105 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2025-01-10 00:53:46,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 1186 flow [2025-01-10 00:53:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2025-01-10 00:53:46,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5132575757575758 [2025-01-10 00:53:46,574 INFO L175 Difference]: Start difference. First operand has 116 places, 137 transitions, 980 flow. Second operand 4 states and 271 transitions. [2025-01-10 00:53:46,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 1186 flow [2025-01-10 00:53:46,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 1073 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-01-10 00:53:46,580 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 863 flow [2025-01-10 00:53:46,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=863, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2025-01-10 00:53:46,581 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2025-01-10 00:53:46,581 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 863 flow [2025-01-10 00:53:46,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:46,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:46,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:46,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-10 00:53:46,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:46,782 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:46,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1265979338, now seen corresponding path program 3 times [2025-01-10 00:53:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649810589] [2025-01-10 00:53:46,783 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:53:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:46,785 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:46,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 00:53:46,910 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 1 equivalence classes. [2025-01-10 00:53:46,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:46,949 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 00:53:46,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:46,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 00:53:46,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:46,964 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 [2025-01-10 00:53:47,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:53:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:47,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:47,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:47,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649810589] [2025-01-10 00:53:47,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649810589] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:47,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:53:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028312309] [2025-01-10 00:53:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:47,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:53:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:47,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:53:47,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:53:48,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:48,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 863 flow. Second operand has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:48,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:48,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:48,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:48,936 INFO L124 PetriNetUnfolderBase]: 647/1238 cut-off events. [2025-01-10 00:53:48,937 INFO L125 PetriNetUnfolderBase]: For 3958/3990 co-relation queries the response was YES. [2025-01-10 00:53:48,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5243 conditions, 1238 events. 647/1238 cut-off events. For 3958/3990 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6613 event pairs, 107 based on Foata normal form. 23/1238 useless extension candidates. Maximal degree in co-relation 5220. Up to 365 conditions per place. [2025-01-10 00:53:48,942 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 103 selfloop transitions, 73 changer transitions 0/201 dead transitions. [2025-01-10 00:53:48,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 201 transitions, 1763 flow [2025-01-10 00:53:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:53:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:53:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 878 transitions. [2025-01-10 00:53:48,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5542929292929293 [2025-01-10 00:53:48,944 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 863 flow. Second operand 12 states and 878 transitions. [2025-01-10 00:53:48,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 201 transitions, 1763 flow [2025-01-10 00:53:48,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 201 transitions, 1755 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:48,951 INFO L231 Difference]: Finished difference. Result has 122 places, 156 transitions, 1374 flow [2025-01-10 00:53:48,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1374, PETRI_PLACES=122, PETRI_TRANSITIONS=156} [2025-01-10 00:53:48,951 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2025-01-10 00:53:48,952 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 156 transitions, 1374 flow [2025-01-10 00:53:48,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2025-01-10 00:53:48,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:48,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:48,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:49,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:49,153 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:49,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 959047492, now seen corresponding path program 4 times [2025-01-10 00:53:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:49,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633401130] [2025-01-10 00:53:49,154 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:53:49,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:49,156 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:49,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-10 00:53:49,281 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-10 00:53:49,341 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-10 00:53:49,341 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:53:49,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:49,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:53:49,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:49,349 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 [2025-01-10 00:53:49,403 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-10 00:53:49,404 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 [2025-01-10 00:53:49,434 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 [2025-01-10 00:53:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:49,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:49,436 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633401130] [2025-01-10 00:53:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633401130] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:49,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:53:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224272696] [2025-01-10 00:53:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:49,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:53:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:49,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:53:49,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:53:49,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-01-10 00:53:49,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 156 transitions, 1374 flow. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:49,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:49,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-01-10 00:53:49,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:49,795 INFO L124 PetriNetUnfolderBase]: 644/1221 cut-off events. [2025-01-10 00:53:49,795 INFO L125 PetriNetUnfolderBase]: For 6836/6869 co-relation queries the response was YES. [2025-01-10 00:53:49,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 1221 events. 644/1221 cut-off events. For 6836/6869 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6422 event pairs, 291 based on Foata normal form. 7/1189 useless extension candidates. Maximal degree in co-relation 6052. Up to 799 conditions per place. [2025-01-10 00:53:49,803 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 118 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2025-01-10 00:53:49,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 161 transitions, 1706 flow [2025-01-10 00:53:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:53:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:53:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2025-01-10 00:53:49,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5511363636363636 [2025-01-10 00:53:49,804 INFO L175 Difference]: Start difference. First operand has 122 places, 156 transitions, 1374 flow. Second operand 4 states and 291 transitions. [2025-01-10 00:53:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 161 transitions, 1706 flow [2025-01-10 00:53:49,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 161 transitions, 1497 flow, removed 39 selfloop flow, removed 6 redundant places. [2025-01-10 00:53:49,816 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 1205 flow [2025-01-10 00:53:49,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1205, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2025-01-10 00:53:49,817 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -4 predicate places. [2025-01-10 00:53:49,817 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 1205 flow [2025-01-10 00:53:49,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:49,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:49,817 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:49,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-10 00:53:50,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:50,018 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2095341432, now seen corresponding path program 1 times [2025-01-10 00:53:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:50,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280990864] [2025-01-10 00:53:50,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:53:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:50,023 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:50,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-10 00:53:50,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:53:50,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:50,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:53:50,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:50,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 00:53:50,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:50,270 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 [2025-01-10 00:53:50,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:53:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:50,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:50,459 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280990864] [2025-01-10 00:53:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280990864] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:50,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:50,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:53:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938756527] [2025-01-10 00:53:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:50,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:53:50,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:50,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:53:50,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:53:51,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:53:51,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 1205 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 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) [2025-01-10 00:53:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:53:51,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:51,866 INFO L124 PetriNetUnfolderBase]: 591/1152 cut-off events. [2025-01-10 00:53:51,866 INFO L125 PetriNetUnfolderBase]: For 5520/5548 co-relation queries the response was YES. [2025-01-10 00:53:51,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5144 conditions, 1152 events. 591/1152 cut-off events. For 5520/5548 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6030 event pairs, 83 based on Foata normal form. 29/1163 useless extension candidates. Maximal degree in co-relation 5115. Up to 521 conditions per place. [2025-01-10 00:53:51,871 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 103 selfloop transitions, 65 changer transitions 0/192 dead transitions. [2025-01-10 00:53:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 192 transitions, 1877 flow [2025-01-10 00:53:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:53:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 00:53:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 726 transitions. [2025-01-10 00:53:51,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-01-10 00:53:51,872 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 1205 flow. Second operand 10 states and 726 transitions. [2025-01-10 00:53:51,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 192 transitions, 1877 flow [2025-01-10 00:53:51,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 192 transitions, 1823 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-01-10 00:53:51,885 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 1608 flow [2025-01-10 00:53:51,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1608, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2025-01-10 00:53:51,886 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 8 predicate places. [2025-01-10 00:53:51,886 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 1608 flow [2025-01-10 00:53:51,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 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) [2025-01-10 00:53:51,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:51,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:51,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:52,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:52,087 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:52,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash 701061944, now seen corresponding path program 2 times [2025-01-10 00:53:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:52,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082572237] [2025-01-10 00:53:52,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:53:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:52,090 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:52,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-10 00:53:52,224 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:53:52,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:52,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 00:53:52,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:52,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-10 00:53:52,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:52,288 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 [2025-01-10 00:53:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:52,490 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:52,491 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:52,491 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 [2025-01-10 00:53:52,531 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 00:53:52,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:52,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 45 [2025-01-10 00:53:52,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:52,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 45 [2025-01-10 00:53:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:52,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:52,680 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082572237] [2025-01-10 00:53:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082572237] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:52,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:52,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-10 00:53:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994072125] [2025-01-10 00:53:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:52,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 00:53:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:52,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 00:53:52,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 00:53:54,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 132 [2025-01-10 00:53:54,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 1608 flow. Second operand has 10 states, 10 states have (on average 53.6) internal successors, (536), 10 states have internal predecessors, (536), 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) [2025-01-10 00:53:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 132 [2025-01-10 00:53:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:55,324 INFO L124 PetriNetUnfolderBase]: 855/1631 cut-off events. [2025-01-10 00:53:55,325 INFO L125 PetriNetUnfolderBase]: For 9960/9960 co-relation queries the response was YES. [2025-01-10 00:53:55,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7710 conditions, 1631 events. 855/1631 cut-off events. For 9960/9960 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8949 event pairs, 49 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 7675. Up to 490 conditions per place. [2025-01-10 00:53:55,334 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 154 selfloop transitions, 108 changer transitions 0/273 dead transitions. [2025-01-10 00:53:55,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 273 transitions, 2981 flow [2025-01-10 00:53:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 00:53:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 00:53:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 788 transitions. [2025-01-10 00:53:55,336 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2025-01-10 00:53:55,336 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 1608 flow. Second operand 13 states and 788 transitions. [2025-01-10 00:53:55,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 273 transitions, 2981 flow [2025-01-10 00:53:55,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 273 transitions, 2819 flow, removed 74 selfloop flow, removed 2 redundant places. [2025-01-10 00:53:55,356 INFO L231 Difference]: Finished difference. Result has 144 places, 199 transitions, 2014 flow [2025-01-10 00:53:55,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2014, PETRI_PLACES=144, PETRI_TRANSITIONS=199} [2025-01-10 00:53:55,357 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 22 predicate places. [2025-01-10 00:53:55,357 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 199 transitions, 2014 flow [2025-01-10 00:53:55,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.6) internal successors, (536), 10 states have internal predecessors, (536), 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) [2025-01-10 00:53:55,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:55,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:55,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:55,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:55,562 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:55,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash 420365460, now seen corresponding path program 3 times [2025-01-10 00:53:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232745532] [2025-01-10 00:53:55,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:53:55,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:55,566 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:55,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-10 00:53:55,706 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:53:55,750 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:55,750 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 00:53:55,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:55,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-10 00:53:55,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:55,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:55,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:53:55,930 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:55,930 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:53:55,931 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 [2025-01-10 00:53:55,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:55,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 45 [2025-01-10 00:53:56,065 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:53:56,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 45 [2025-01-10 00:53:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:56,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:56,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:56,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232745532] [2025-01-10 00:53:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232745532] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:56,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:56,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 00:53:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47278258] [2025-01-10 00:53:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:56,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 00:53:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:56,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 00:53:56,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:53:56,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2025-01-10 00:53:56,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 199 transitions, 2014 flow. Second operand has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:56,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:56,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2025-01-10 00:53:56,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:58,013 INFO L124 PetriNetUnfolderBase]: 870/1688 cut-off events. [2025-01-10 00:53:58,013 INFO L125 PetriNetUnfolderBase]: For 11255/11255 co-relation queries the response was YES. [2025-01-10 00:53:58,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8709 conditions, 1688 events. 870/1688 cut-off events. For 11255/11255 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9409 event pairs, 46 based on Foata normal form. 1/1682 useless extension candidates. Maximal degree in co-relation 8669. Up to 504 conditions per place. [2025-01-10 00:53:58,022 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 177 selfloop transitions, 85 changer transitions 0/273 dead transitions. [2025-01-10 00:53:58,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 273 transitions, 3149 flow [2025-01-10 00:53:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:53:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:53:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 827 transitions. [2025-01-10 00:53:58,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5220959595959596 [2025-01-10 00:53:58,023 INFO L175 Difference]: Start difference. First operand has 144 places, 199 transitions, 2014 flow. Second operand 12 states and 827 transitions. [2025-01-10 00:53:58,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 273 transitions, 3149 flow [2025-01-10 00:53:58,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 3064 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-01-10 00:53:58,043 INFO L231 Difference]: Finished difference. Result has 152 places, 204 transitions, 2177 flow [2025-01-10 00:53:58,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2177, PETRI_PLACES=152, PETRI_TRANSITIONS=204} [2025-01-10 00:53:58,044 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 30 predicate places. [2025-01-10 00:53:58,045 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 204 transitions, 2177 flow [2025-01-10 00:53:58,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:53:58,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:58,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:58,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-01-10 00:53:58,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:58,249 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:58,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 315813298, now seen corresponding path program 4 times [2025-01-10 00:53:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999896939] [2025-01-10 00:53:58,250 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:53:58,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:58,252 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:58,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-10 00:53:58,399 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-01-10 00:53:58,455 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:58,455 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:53:58,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:58,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 00:53:58,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:58,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:53:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:53:58,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:53:58,575 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:53:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999896939] [2025-01-10 00:53:58,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999896939] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:53:58,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:53:58,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:53:58,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675803156] [2025-01-10 00:53:58,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:53:58,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:53:58,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:53:58,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:53:58,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:53:58,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-01-10 00:53:58,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 204 transitions, 2177 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:53:58,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:53:58,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-01-10 00:53:58,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:53:59,501 INFO L124 PetriNetUnfolderBase]: 769/1524 cut-off events. [2025-01-10 00:53:59,501 INFO L125 PetriNetUnfolderBase]: For 12334/12388 co-relation queries the response was YES. [2025-01-10 00:53:59,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 1524 events. 769/1524 cut-off events. For 12334/12388 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8504 event pairs, 128 based on Foata normal form. 41/1542 useless extension candidates. Maximal degree in co-relation 8291. Up to 737 conditions per place. [2025-01-10 00:53:59,511 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 125 selfloop transitions, 74 changer transitions 0/231 dead transitions. [2025-01-10 00:53:59,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 231 transitions, 2795 flow [2025-01-10 00:53:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:53:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 00:53:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 785 transitions. [2025-01-10 00:53:59,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5946969696969697 [2025-01-10 00:53:59,515 INFO L175 Difference]: Start difference. First operand has 152 places, 204 transitions, 2177 flow. Second operand 10 states and 785 transitions. [2025-01-10 00:53:59,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 231 transitions, 2795 flow [2025-01-10 00:53:59,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 231 transitions, 2644 flow, removed 23 selfloop flow, removed 8 redundant places. [2025-01-10 00:53:59,536 INFO L231 Difference]: Finished difference. Result has 155 places, 207 transitions, 2266 flow [2025-01-10 00:53:59,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2266, PETRI_PLACES=155, PETRI_TRANSITIONS=207} [2025-01-10 00:53:59,541 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 33 predicate places. [2025-01-10 00:53:59,541 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 207 transitions, 2266 flow [2025-01-10 00:53:59,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:53:59,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:53:59,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:53:59,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-10 00:53:59,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:59,742 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:53:59,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:53:59,742 INFO L85 PathProgramCache]: Analyzing trace with hash -456723454, now seen corresponding path program 5 times [2025-01-10 00:53:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:53:59,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567970134] [2025-01-10 00:53:59,743 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 00:53:59,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:53:59,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:53:59,745 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:53:59,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-10 00:53:59,894 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:53:59,937 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:53:59,937 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 00:53:59,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:53:59,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-10 00:53:59,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:53:59,950 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 [2025-01-10 00:54:00,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:54:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:54:00,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:54:00,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:54:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567970134] [2025-01-10 00:54:00,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567970134] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:00,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:00,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:54:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825192523] [2025-01-10 00:54:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:00,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:54:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:54:00,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:54:00,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:54:01,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-01-10 00:54:01,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 207 transitions, 2266 flow. Second operand has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 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) [2025-01-10 00:54:01,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:01,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-01-10 00:54:01,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:54:01,643 INFO L124 PetriNetUnfolderBase]: 610/1272 cut-off events. [2025-01-10 00:54:01,643 INFO L125 PetriNetUnfolderBase]: For 9883/9916 co-relation queries the response was YES. [2025-01-10 00:54:01,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6814 conditions, 1272 events. 610/1272 cut-off events. For 9883/9916 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6910 event pairs, 79 based on Foata normal form. 29/1280 useless extension candidates. Maximal degree in co-relation 6769. Up to 543 conditions per place. [2025-01-10 00:54:01,650 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 132 selfloop transitions, 76 changer transitions 0/240 dead transitions. [2025-01-10 00:54:01,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 240 transitions, 2835 flow [2025-01-10 00:54:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 00:54:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 00:54:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 808 transitions. [2025-01-10 00:54:01,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564738292011019 [2025-01-10 00:54:01,651 INFO L175 Difference]: Start difference. First operand has 155 places, 207 transitions, 2266 flow. Second operand 11 states and 808 transitions. [2025-01-10 00:54:01,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 240 transitions, 2835 flow [2025-01-10 00:54:01,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 240 transitions, 2698 flow, removed 26 selfloop flow, removed 6 redundant places. [2025-01-10 00:54:01,676 INFO L231 Difference]: Finished difference. Result has 165 places, 208 transitions, 2373 flow [2025-01-10 00:54:01,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2373, PETRI_PLACES=165, PETRI_TRANSITIONS=208} [2025-01-10 00:54:01,678 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 43 predicate places. [2025-01-10 00:54:01,678 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 208 transitions, 2373 flow [2025-01-10 00:54:01,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 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) [2025-01-10 00:54:01,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:01,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:01,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-10 00:54:01,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:01,879 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:54:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1864643850, now seen corresponding path program 6 times [2025-01-10 00:54:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:54:01,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675469278] [2025-01-10 00:54:01,880 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 00:54:01,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:01,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:54:01,882 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:54:01,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-10 00:54:02,033 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:54:02,075 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:54:02,075 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-10 00:54:02,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:02,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 00:54:02,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:54:02,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:54:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:54:02,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:54:02,195 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:54:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675469278] [2025-01-10 00:54:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675469278] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:54:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277977318] [2025-01-10 00:54:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:02,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:54:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:54:02,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:54:02,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:54:02,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-01-10 00:54:02,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 208 transitions, 2373 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:54:02,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:02,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-01-10 00:54:02,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:54:03,044 INFO L124 PetriNetUnfolderBase]: 672/1501 cut-off events. [2025-01-10 00:54:03,044 INFO L125 PetriNetUnfolderBase]: For 11238/11269 co-relation queries the response was YES. [2025-01-10 00:54:03,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8073 conditions, 1501 events. 672/1501 cut-off events. For 11238/11269 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8865 event pairs, 120 based on Foata normal form. 16/1494 useless extension candidates. Maximal degree in co-relation 8021. Up to 489 conditions per place. [2025-01-10 00:54:03,053 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 168 selfloop transitions, 68 changer transitions 0/268 dead transitions. [2025-01-10 00:54:03,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 268 transitions, 3247 flow [2025-01-10 00:54:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 00:54:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 00:54:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 885 transitions. [2025-01-10 00:54:03,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609504132231405 [2025-01-10 00:54:03,055 INFO L175 Difference]: Start difference. First operand has 165 places, 208 transitions, 2373 flow. Second operand 11 states and 885 transitions. [2025-01-10 00:54:03,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 268 transitions, 3247 flow [2025-01-10 00:54:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 268 transitions, 3146 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-01-10 00:54:03,095 INFO L231 Difference]: Finished difference. Result has 174 places, 213 transitions, 2534 flow [2025-01-10 00:54:03,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2534, PETRI_PLACES=174, PETRI_TRANSITIONS=213} [2025-01-10 00:54:03,095 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 52 predicate places. [2025-01-10 00:54:03,095 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 213 transitions, 2534 flow [2025-01-10 00:54:03,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:54:03,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:03,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:03,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-01-10 00:54:03,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:03,300 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:54:03,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash 92050840, now seen corresponding path program 7 times [2025-01-10 00:54:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:54:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333271341] [2025-01-10 00:54:03,301 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 00:54:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:54:03,304 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:54:03,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-10 00:54:03,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:54:03,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:54:03,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:54:03,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:03,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-10 00:54:03,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:54:03,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-01-10 00:54:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:54:03,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:54:03,628 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:54:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333271341] [2025-01-10 00:54:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333271341] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:03,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:03,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 00:54:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494635596] [2025-01-10 00:54:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:03,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:54:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:54:03,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:54:03,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:54:03,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-01-10 00:54:03,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 213 transitions, 2534 flow. Second operand has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:54:03,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:54:03,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-01-10 00:54:03,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:54:04,641 INFO L124 PetriNetUnfolderBase]: 643/1430 cut-off events. [2025-01-10 00:54:04,642 INFO L125 PetriNetUnfolderBase]: For 12230/12261 co-relation queries the response was YES. [2025-01-10 00:54:04,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7844 conditions, 1430 events. 643/1430 cut-off events. For 12230/12261 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8229 event pairs, 89 based on Foata normal form. 20/1429 useless extension candidates. Maximal degree in co-relation 7789. Up to 489 conditions per place. [2025-01-10 00:54:04,650 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 168 selfloop transitions, 72 changer transitions 0/272 dead transitions. [2025-01-10 00:54:04,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 272 transitions, 3343 flow [2025-01-10 00:54:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 00:54:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 00:54:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 891 transitions. [2025-01-10 00:54:04,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2025-01-10 00:54:04,651 INFO L175 Difference]: Start difference. First operand has 174 places, 213 transitions, 2534 flow. Second operand 11 states and 891 transitions. [2025-01-10 00:54:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 272 transitions, 3343 flow [2025-01-10 00:54:04,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 272 transitions, 3188 flow, removed 30 selfloop flow, removed 7 redundant places. [2025-01-10 00:54:04,681 INFO L231 Difference]: Finished difference. Result has 180 places, 217 transitions, 2645 flow [2025-01-10 00:54:04,681 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2645, PETRI_PLACES=180, PETRI_TRANSITIONS=217} [2025-01-10 00:54:04,682 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 58 predicate places. [2025-01-10 00:54:04,682 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 217 transitions, 2645 flow [2025-01-10 00:54:04,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 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) [2025-01-10 00:54:04,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:54:04,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:54:04,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-10 00:54:04,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:04,887 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-01-10 00:54:04,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:54:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1193087418, now seen corresponding path program 8 times [2025-01-10 00:54:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:54:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28407725] [2025-01-10 00:54:04,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:54:04,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:54:04,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:54:04,891 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:54:04,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-10 00:54:05,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 1 equivalence classes. [2025-01-10 00:54:05,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 00:54:05,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 00:54:05,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:54:05,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-10 00:54:05,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:54:05,103 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 [2025-01-10 00:54:05,407 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-10 00:54:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:54:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:54:05,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:54:05,412 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:54:05,413 INFO L173 IndexEqualityManager]: detected equality via solver [2025-01-10 00:54:05,413 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 [2025-01-10 00:54:05,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:54:05,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 75 [2025-01-10 00:54:07,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 00:54:07,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 63 [2025-01-10 00:54:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:54:07,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:54:07,531 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:54:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28407725] [2025-01-10 00:54:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28407725] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:54:07,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:54:07,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-10 00:54:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941417460] [2025-01-10 00:54:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:54:07,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 00:54:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:54:07,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 00:54:07,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=104, Unknown=1, NotChecked=0, Total=132 [2025-01-10 00:54:09,810 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] [2025-01-10 00:54:11,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:14,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:16,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:18,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:21,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:25,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:28,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:31,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:32,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:35,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:37,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:40,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:42,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:45,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:48,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:49,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-01-10 00:54:52,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]