./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:14:59,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:14:59,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:14:59,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:14:59,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:14:59,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:14:59,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:14:59,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:14:59,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:14:59,837 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:14:59,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:14:59,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:14:59,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:14:59,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:14:59,838 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:14:59,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:14:59,839 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:14:59,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:14:59,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:14:59,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:14:59,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:14:59,841 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/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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2025-03-17 14:15:00,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:15:00,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:15:00,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:15:00,072 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:15:00,072 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:15:00,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-03-17 14:15:01,184 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8994386fe/6219bcc6bc0f4ea8a464e649090ed94d/FLAGef7b79115 [2025-03-17 14:15:01,485 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:01,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-03-17 14:15:01,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8994386fe/6219bcc6bc0f4ea8a464e649090ed94d/FLAGef7b79115 [2025-03-17 14:15:01,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8994386fe/6219bcc6bc0f4ea8a464e649090ed94d [2025-03-17 14:15:01,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:01,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:01,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:01,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:01,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:01,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:01" (1/1) ... [2025-03-17 14:15:01,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7567fab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:01, skipping insertion in model container [2025-03-17 14:15:01,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:01" (1/1) ... [2025-03-17 14:15:01,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:02,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:02,174 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) [2025-03-17 14:15:02,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e7fd304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:02, skipping insertion in model container [2025-03-17 14:15:02,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:02,175 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 14:15:02,176 INFO L158 Benchmark]: Toolchain (without parser) took 416.66ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 102.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:02,176 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:15:02,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.32ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 102.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:02,178 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.32ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 102.5MB in the end (delta: 17.3MB). 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:15:03,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:15:03,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 14:15:04,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:15:04,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:15:04,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:15:04,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:15:04,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:15:04,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:15:04,020 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:15:04,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:15:04,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:15:04,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:15:04,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:15:04,021 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:15:04,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 14:15:04,022 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:15:04,023 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:15:04,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:15:04,023 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:15:04,023 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:15:04,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:15:04,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:04,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:15:04,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:15:04,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:15:04,025 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/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 -> 75716fdd637a22328d600b3257cf24f40a7920b464397c315485c5ed90fb6ece [2025-03-17 14:15:04,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:15:04,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:15:04,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:15:04,273 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:15:04,273 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:15:04,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-03-17 14:15:05,441 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d862634a/5cc35cd3b4584d869050f7af5f4e0027/FLAG257aface0 [2025-03-17 14:15:05,680 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:05,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2025-03-17 14:15:05,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d862634a/5cc35cd3b4584d869050f7af5f4e0027/FLAG257aface0 [2025-03-17 14:15:05,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d862634a/5cc35cd3b4584d869050f7af5f4e0027 [2025-03-17 14:15:05,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:05,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:05,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:05,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:05,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:05,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536d8511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05, skipping insertion in model container [2025-03-17 14:15:05,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:06,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:06,038 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 14:15:06,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:06,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:06,125 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:15:06,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:06,201 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:15:06,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06 WrapperNode [2025-03-17 14:15:06,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:06,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:06,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:15:06,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:15:06,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,239 INFO L138 Inliner]: procedures = 249, calls = 40, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2025-03-17 14:15:06,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:06,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:15:06,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:15:06,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:15:06,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,271 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 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, 2, 6]. [2025-03-17 14:15:06,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:15:06,312 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:15:06,312 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:15:06,312 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:15:06,313 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (1/1) ... [2025-03-17 14:15:06,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:06,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:15:06,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-17 14:15:06,362 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 14:15:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 14:15:06,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:15:06,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:15:06,365 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:15:06,620 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:15:06,621 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:15:07,033 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:15:07,033 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:15:07,150 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:15:07,150 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:15:07,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:07 BoogieIcfgContainer [2025-03-17 14:15:07,151 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:15:07,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:15:07,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:15:07,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:15:07,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:15:05" (1/3) ... [2025-03-17 14:15:07,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8eab39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:07, skipping insertion in model container [2025-03-17 14:15:07,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:06" (2/3) ... [2025-03-17 14:15:07,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8eab39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:07, skipping insertion in model container [2025-03-17 14:15:07,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:07" (3/3) ... [2025-03-17 14:15:07,159 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2025-03-17 14:15:07,169 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:15:07,170 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_1-container_of-global.i that has 2 procedures, 103 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-03-17 14:15:07,170 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:15:07,243 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 14:15:07,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 132 transitions, 278 flow [2025-03-17 14:15:07,328 INFO L124 PetriNetUnfolderBase]: 18/165 cut-off events. [2025-03-17 14:15:07,332 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:15:07,336 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 525 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. [2025-03-17 14:15:07,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 132 transitions, 278 flow [2025-03-17 14:15:07,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 272 flow [2025-03-17 14:15:07,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:15:07,354 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;@63548422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:15:07,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-17 14:15:07,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:15:07,358 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-17 14:15:07,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:15:07,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:07,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:07,359 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:07,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 492951, now seen corresponding path program 1 times [2025-03-17 14:15:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274784552] [2025-03-17 14:15:07,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:07,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:07,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:07,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:15:07,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:07,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:07,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:07,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:07,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:15:07,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:07,529 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 [2025-03-17 14:15:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:07,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:07,542 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:07,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274784552] [2025-03-17 14:15:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274784552] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:07,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129888129] [2025-03-17 14:15:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:07,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:07,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:07,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:07,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2025-03-17 14:15:07,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2025-03-17 14:15:07,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:07,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2025-03-17 14:15:07,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:08,049 INFO L124 PetriNetUnfolderBase]: 647/1968 cut-off events. [2025-03-17 14:15:08,049 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-17 14:15:08,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 1968 events. 647/1968 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15698 event pairs, 95 based on Foata normal form. 156/1819 useless extension candidates. Maximal degree in co-relation 2915. Up to 905 conditions per place. [2025-03-17 14:15:08,062 INFO L140 encePairwiseOnDemand]: 114/132 looper letters, 53 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2025-03-17 14:15:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 118 transitions, 358 flow [2025-03-17 14:15:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2025-03-17 14:15:08,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2025-03-17 14:15:08,073 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 272 flow. Second operand 3 states and 266 transitions. [2025-03-17 14:15:08,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 118 transitions, 358 flow [2025-03-17 14:15:08,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 350 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:08,082 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2025-03-17 14:15:08,084 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} [2025-03-17 14:15:08,086 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -12 predicate places. [2025-03-17 14:15:08,087 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2025-03-17 14:15:08,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2025-03-17 14:15:08,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:08,088 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:08,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:08,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:08,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:08,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 492952, now seen corresponding path program 1 times [2025-03-17 14:15:08,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:08,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269106320] [2025-03-17 14:15:08,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:08,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:08,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:15:08,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:08,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:08,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:08,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:08,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:08,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:08,416 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 [2025-03-17 14:15:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:08,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:08,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:08,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269106320] [2025-03-17 14:15:08,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269106320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259881109] [2025-03-17 14:15:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:08,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:08,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:08,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:08,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2025-03-17 14:15:08,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2025-03-17 14:15:08,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:08,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2025-03-17 14:15:08,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:08,880 INFO L124 PetriNetUnfolderBase]: 647/1964 cut-off events. [2025-03-17 14:15:08,880 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-17 14:15:08,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 1964 events. 647/1964 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15615 event pairs, 95 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 488. Up to 905 conditions per place. [2025-03-17 14:15:08,893 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 51 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2025-03-17 14:15:08,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 342 flow [2025-03-17 14:15:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2025-03-17 14:15:08,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2025-03-17 14:15:08,897 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 258 transitions. [2025-03-17 14:15:08,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 342 flow [2025-03-17 14:15:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:08,902 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 216 flow [2025-03-17 14:15:08,903 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} [2025-03-17 14:15:08,904 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-03-17 14:15:08,904 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 216 flow [2025-03-17 14:15:08,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2025-03-17 14:15:08,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:08,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 14:15:08,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:15:09,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:09,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash 15283242, now seen corresponding path program 1 times [2025-03-17 14:15:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626663840] [2025-03-17 14:15:09,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:09,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:09,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:09,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:15:09,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 14:15:09,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 14:15:09,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:09,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:09,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 14:15:09,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:09,204 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:09,204 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:09,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626663840] [2025-03-17 14:15:09,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626663840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:09,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:09,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:15:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305117391] [2025-03-17 14:15:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:09,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:09,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:09,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:09,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-03-17 14:15:09,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2025-03-17 14:15:09,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:09,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-03-17 14:15:09,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:09,590 INFO L124 PetriNetUnfolderBase]: 707/1710 cut-off events. [2025-03-17 14:15:09,590 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-17 14:15:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2948 conditions, 1710 events. 707/1710 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 11711 event pairs, 645 based on Foata normal form. 0/1422 useless extension candidates. Maximal degree in co-relation 869. Up to 1092 conditions per place. [2025-03-17 14:15:09,599 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 51 selfloop transitions, 3 changer transitions 2/115 dead transitions. [2025-03-17 14:15:09,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 348 flow [2025-03-17 14:15:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2025-03-17 14:15:09,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2025-03-17 14:15:09,604 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 216 flow. Second operand 3 states and 266 transitions. [2025-03-17 14:15:09,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 348 flow [2025-03-17 14:15:09,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:09,608 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 221 flow [2025-03-17 14:15:09,609 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} [2025-03-17 14:15:09,609 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -15 predicate places. [2025-03-17 14:15:09,610 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 221 flow [2025-03-17 14:15:09,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2025-03-17 14:15:09,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:09,610 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:09,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 14:15:09,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:09,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash -119743493, now seen corresponding path program 1 times [2025-03-17 14:15:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:09,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493703422] [2025-03-17 14:15:09,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:09,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:09,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:09,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:15:09,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:15:09,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:15:09,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:09,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:09,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:15:09,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:09,907 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:09,908 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:09,908 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:09,913 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 [2025-03-17 14:15:09,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:09,978 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 [2025-03-17 14:15:10,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:10,047 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 [2025-03-17 14:15:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:10,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:10,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493703422] [2025-03-17 14:15:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493703422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877798211] [2025-03-17 14:15:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:10,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:10,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:10,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:10,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2025-03-17 14:15:10,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2025-03-17 14:15:10,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:10,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2025-03-17 14:15:10,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:10,660 INFO L124 PetriNetUnfolderBase]: 1069/2485 cut-off events. [2025-03-17 14:15:10,660 INFO L125 PetriNetUnfolderBase]: For 152/153 co-relation queries the response was YES. [2025-03-17 14:15:10,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 2485 events. 1069/2485 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17962 event pairs, 628 based on Foata normal form. 1/2186 useless extension candidates. Maximal degree in co-relation 4015. Up to 1711 conditions per place. [2025-03-17 14:15:10,670 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 51 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2025-03-17 14:15:10,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 352 flow [2025-03-17 14:15:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2025-03-17 14:15:10,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-17 14:15:10,672 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 221 flow. Second operand 5 states and 384 transitions. [2025-03-17 14:15:10,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 352 flow [2025-03-17 14:15:10,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 341 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:10,675 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 236 flow [2025-03-17 14:15:10,675 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} [2025-03-17 14:15:10,676 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -16 predicate places. [2025-03-17 14:15:10,676 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 236 flow [2025-03-17 14:15:10,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2025-03-17 14:15:10,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:10,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:10,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 14:15:10,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:10,877 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:10,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1768272114, now seen corresponding path program 1 times [2025-03-17 14:15:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22966599] [2025-03-17 14:15:10,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:10,879 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:10,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:15:10,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:15:10,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:15:10,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:10,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:10,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:10,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:10,978 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 [2025-03-17 14:15:11,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:11,101 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 [2025-03-17 14:15:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:11,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:11,111 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22966599] [2025-03-17 14:15:11,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22966599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:11,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:11,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:11,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291643403] [2025-03-17 14:15:11,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:11,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:11,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:11,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:11,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-17 14:15:11,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:11,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:11,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-17 14:15:11,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:11,720 INFO L124 PetriNetUnfolderBase]: 1237/2773 cut-off events. [2025-03-17 14:15:11,721 INFO L125 PetriNetUnfolderBase]: For 230/236 co-relation queries the response was YES. [2025-03-17 14:15:11,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2773 events. 1237/2773 cut-off events. For 230/236 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19748 event pairs, 740 based on Foata normal form. 6/2362 useless extension candidates. Maximal degree in co-relation 2096. Up to 1981 conditions per place. [2025-03-17 14:15:11,733 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 53 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-03-17 14:15:11,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 369 flow [2025-03-17 14:15:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2025-03-17 14:15:11,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-03-17 14:15:11,735 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 236 flow. Second operand 5 states and 363 transitions. [2025-03-17 14:15:11,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 369 flow [2025-03-17 14:15:11,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 107 transitions, 361 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:11,737 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 240 flow [2025-03-17 14:15:11,737 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} [2025-03-17 14:15:11,738 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -18 predicate places. [2025-03-17 14:15:11,738 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 240 flow [2025-03-17 14:15:11,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:11,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:11,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:11,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 14:15:11,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:11,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:11,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash -350962204, now seen corresponding path program 1 times [2025-03-17 14:15:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83941618] [2025-03-17 14:15:11,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:11,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:11,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:11,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:11,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:15:12,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:12,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:12,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:12,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:12,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:12,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:12,083 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:12,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83941618] [2025-03-17 14:15:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83941618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:12,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:12,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:12,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939293510] [2025-03-17 14:15:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:12,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:12,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:12,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:12,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:12,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 132 [2025-03-17 14:15:12,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2025-03-17 14:15:12,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:12,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 132 [2025-03-17 14:15:12,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:12,604 INFO L124 PetriNetUnfolderBase]: 869/1894 cut-off events. [2025-03-17 14:15:12,605 INFO L125 PetriNetUnfolderBase]: For 67/75 co-relation queries the response was YES. [2025-03-17 14:15:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3467 conditions, 1894 events. 869/1894 cut-off events. For 67/75 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12074 event pairs, 426 based on Foata normal form. 0/1776 useless extension candidates. Maximal degree in co-relation 1126. Up to 1039 conditions per place. [2025-03-17 14:15:12,618 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 61 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2025-03-17 14:15:12,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 404 flow [2025-03-17 14:15:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2025-03-17 14:15:12,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2025-03-17 14:15:12,619 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 240 flow. Second operand 4 states and 315 transitions. [2025-03-17 14:15:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 404 flow [2025-03-17 14:15:12,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 115 transitions, 388 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:12,621 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 226 flow [2025-03-17 14:15:12,622 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2025-03-17 14:15:12,623 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-03-17 14:15:12,623 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 226 flow [2025-03-17 14:15:12,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2025-03-17 14:15:12,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:12,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:12,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 14:15:12,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:12,824 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:12,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:12,825 INFO L85 PathProgramCache]: Analyzing trace with hash -350962203, now seen corresponding path program 1 times [2025-03-17 14:15:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390091738] [2025-03-17 14:15:12,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:12,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:12,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:12,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:12,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 14:15:12,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:12,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:12,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:12,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:12,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:12,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:12,930 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 [2025-03-17 14:15:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:12,992 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:12,992 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390091738] [2025-03-17 14:15:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390091738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131438087] [2025-03-17 14:15:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:12,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:12,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:12,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:13,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 132 [2025-03-17 14:15:13,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2025-03-17 14:15:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:13,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 132 [2025-03-17 14:15:13,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:13,293 INFO L124 PetriNetUnfolderBase]: 743/1779 cut-off events. [2025-03-17 14:15:13,293 INFO L125 PetriNetUnfolderBase]: For 178/186 co-relation queries the response was YES. [2025-03-17 14:15:13,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1779 events. 743/1779 cut-off events. For 178/186 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 11884 event pairs, 462 based on Foata normal form. 79/1698 useless extension candidates. Maximal degree in co-relation 932. Up to 879 conditions per place. [2025-03-17 14:15:13,300 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 61 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2025-03-17 14:15:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 111 transitions, 388 flow [2025-03-17 14:15:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2025-03-17 14:15:13,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2025-03-17 14:15:13,301 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 226 flow. Second operand 3 states and 262 transitions. [2025-03-17 14:15:13,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 111 transitions, 388 flow [2025-03-17 14:15:13,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:13,303 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 235 flow [2025-03-17 14:15:13,303 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} [2025-03-17 14:15:13,303 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-03-17 14:15:13,303 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 235 flow [2025-03-17 14:15:13,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2025-03-17 14:15:13,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:13,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:13,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:13,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:13,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:13,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2129578799, now seen corresponding path program 1 times [2025-03-17 14:15:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403513840] [2025-03-17 14:15:13,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:13,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:13,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 14:15:13,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:15:13,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:15:13,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:13,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:13,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:13,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:13,598 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 [2025-03-17 14:15:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:13,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:13,630 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:13,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403513840] [2025-03-17 14:15:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403513840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513570918] [2025-03-17 14:15:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:13,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:13,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:13,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:13,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:13,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-17 14:15:13,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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) [2025-03-17 14:15:13,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:13,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-17 14:15:13,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:14,257 INFO L124 PetriNetUnfolderBase]: 1086/2582 cut-off events. [2025-03-17 14:15:14,257 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2025-03-17 14:15:14,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4788 conditions, 2582 events. 1086/2582 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18566 event pairs, 126 based on Foata normal form. 56/2532 useless extension candidates. Maximal degree in co-relation 2943. Up to 945 conditions per place. [2025-03-17 14:15:14,268 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 99 selfloop transitions, 15 changer transitions 1/160 dead transitions. [2025-03-17 14:15:14,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 160 transitions, 616 flow [2025-03-17 14:15:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 599 transitions. [2025-03-17 14:15:14,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5672348484848485 [2025-03-17 14:15:14,271 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 235 flow. Second operand 8 states and 599 transitions. [2025-03-17 14:15:14,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 160 transitions, 616 flow [2025-03-17 14:15:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 160 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:14,276 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 339 flow [2025-03-17 14:15:14,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2025-03-17 14:15:14,277 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2025-03-17 14:15:14,277 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 339 flow [2025-03-17 14:15:14,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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) [2025-03-17 14:15:14,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:14,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:14,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:14,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:14,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:14,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2129578800, now seen corresponding path program 1 times [2025-03-17 14:15:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:14,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903788681] [2025-03-17 14:15:14,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:14,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:14,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:14,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:14,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 14:15:14,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:15:14,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:15:14,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:14,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:14,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:14,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:14,579 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 [2025-03-17 14:15:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:14,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:14,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903788681] [2025-03-17 14:15:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903788681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:14,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053082121] [2025-03-17 14:15:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:14,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:14,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:14,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:14,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-17 14:15:14,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2025-03-17 14:15:14,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:14,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-17 14:15:14,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:15,305 INFO L124 PetriNetUnfolderBase]: 839/2122 cut-off events. [2025-03-17 14:15:15,306 INFO L125 PetriNetUnfolderBase]: For 922/994 co-relation queries the response was YES. [2025-03-17 14:15:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 2122 events. 839/2122 cut-off events. For 922/994 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 15128 event pairs, 142 based on Foata normal form. 237/2296 useless extension candidates. Maximal degree in co-relation 3852. Up to 968 conditions per place. [2025-03-17 14:15:15,316 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 86 selfloop transitions, 12 changer transitions 2/152 dead transitions. [2025-03-17 14:15:15,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 152 transitions, 643 flow [2025-03-17 14:15:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2025-03-17 14:15:15,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5941558441558441 [2025-03-17 14:15:15,318 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 339 flow. Second operand 7 states and 549 transitions. [2025-03-17 14:15:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 152 transitions, 643 flow [2025-03-17 14:15:15,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 152 transitions, 643 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:15,322 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 399 flow [2025-03-17 14:15:15,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2025-03-17 14:15:15,322 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -5 predicate places. [2025-03-17 14:15:15,322 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 399 flow [2025-03-17 14:15:15,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2025-03-17 14:15:15,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:15,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:15,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:15,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:15,523 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:15,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1589290641, now seen corresponding path program 1 times [2025-03-17 14:15:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577092037] [2025-03-17 14:15:15,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:15,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:15,526 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:15,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 14:15:15,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 14:15:15,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 14:15:15,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:15,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:15,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:15,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:15,614 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 [2025-03-17 14:15:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:15,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:15,644 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577092037] [2025-03-17 14:15:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577092037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:15,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:15,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380719350] [2025-03-17 14:15:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:15,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:15,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:15,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:15,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-17 14:15:15,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2025-03-17 14:15:15,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:15,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-17 14:15:15,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:16,289 INFO L124 PetriNetUnfolderBase]: 1246/2917 cut-off events. [2025-03-17 14:15:16,289 INFO L125 PetriNetUnfolderBase]: For 2480/2597 co-relation queries the response was YES. [2025-03-17 14:15:16,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6433 conditions, 2917 events. 1246/2917 cut-off events. For 2480/2597 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 21444 event pairs, 315 based on Foata normal form. 89/2925 useless extension candidates. Maximal degree in co-relation 5606. Up to 960 conditions per place. [2025-03-17 14:15:16,299 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 105 selfloop transitions, 20 changer transitions 0/172 dead transitions. [2025-03-17 14:15:16,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 868 flow [2025-03-17 14:15:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 598 transitions. [2025-03-17 14:15:16,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662878787878788 [2025-03-17 14:15:16,301 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 399 flow. Second operand 8 states and 598 transitions. [2025-03-17 14:15:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 868 flow [2025-03-17 14:15:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 847 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:16,306 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 532 flow [2025-03-17 14:15:16,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2025-03-17 14:15:16,307 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 2 predicate places. [2025-03-17 14:15:16,307 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 532 flow [2025-03-17 14:15:16,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2025-03-17 14:15:16,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:16,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:16,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:16,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:16,507 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:16,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1589290642, now seen corresponding path program 1 times [2025-03-17 14:15:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251464867] [2025-03-17 14:15:16,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:16,510 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:16,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 14:15:16,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 14:15:16,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 14:15:16,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:16,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:16,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:16,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:16,608 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 [2025-03-17 14:15:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:16,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:16,684 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:16,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251464867] [2025-03-17 14:15:16,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251464867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:16,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:16,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913377244] [2025-03-17 14:15:16,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:16,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:16,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:16,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:16,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:17,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2025-03-17 14:15:17,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 532 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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) [2025-03-17 14:15:17,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:17,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2025-03-17 14:15:17,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:17,489 INFO L124 PetriNetUnfolderBase]: 934/2409 cut-off events. [2025-03-17 14:15:17,489 INFO L125 PetriNetUnfolderBase]: For 2995/3197 co-relation queries the response was YES. [2025-03-17 14:15:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 2409 events. 934/2409 cut-off events. For 2995/3197 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17974 event pairs, 161 based on Foata normal form. 312/2686 useless extension candidates. Maximal degree in co-relation 5094. Up to 1126 conditions per place. [2025-03-17 14:15:17,500 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 90 selfloop transitions, 17 changer transitions 1/162 dead transitions. [2025-03-17 14:15:17,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 162 transitions, 880 flow [2025-03-17 14:15:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 546 transitions. [2025-03-17 14:15:17,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-17 14:15:17,503 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 532 flow. Second operand 7 states and 546 transitions. [2025-03-17 14:15:17,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 162 transitions, 880 flow [2025-03-17 14:15:17,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 162 transitions, 877 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:17,511 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 614 flow [2025-03-17 14:15:17,511 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=614, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2025-03-17 14:15:17,511 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2025-03-17 14:15:17,512 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 614 flow [2025-03-17 14:15:17,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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) [2025-03-17 14:15:17,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:17,512 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] [2025-03-17 14:15:17,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 14:15:17,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:17,712 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:17,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 49714065, now seen corresponding path program 1 times [2025-03-17 14:15:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719046404] [2025-03-17 14:15:17,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:17,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:17,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 14:15:17,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 14:15:17,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 14:15:17,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:17,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:17,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:15:17,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:17,842 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,843 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,843 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,844 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 [2025-03-17 14:15:17,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:17,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 53 [2025-03-17 14:15:17,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:17,905 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 [2025-03-17 14:15:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:17,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:17,915 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:17,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719046404] [2025-03-17 14:15:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719046404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:17,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:17,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:17,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439008326] [2025-03-17 14:15:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:17,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:17,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:17,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:18,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-17 14:15:18,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2025-03-17 14:15:18,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:18,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-17 14:15:18,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:19,301 INFO L124 PetriNetUnfolderBase]: 1903/3796 cut-off events. [2025-03-17 14:15:19,301 INFO L125 PetriNetUnfolderBase]: For 6589/6874 co-relation queries the response was YES. [2025-03-17 14:15:19,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10319 conditions, 3796 events. 1903/3796 cut-off events. For 6589/6874 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 26209 event pairs, 544 based on Foata normal form. 35/3650 useless extension candidates. Maximal degree in co-relation 9445. Up to 1503 conditions per place. [2025-03-17 14:15:19,315 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 106 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2025-03-17 14:15:19,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 191 transitions, 1210 flow [2025-03-17 14:15:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2025-03-17 14:15:19,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2025-03-17 14:15:19,317 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 614 flow. Second operand 7 states and 542 transitions. [2025-03-17 14:15:19,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 191 transitions, 1210 flow [2025-03-17 14:15:19,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 191 transitions, 1191 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:19,330 INFO L231 Difference]: Finished difference. Result has 139 places, 141 transitions, 876 flow [2025-03-17 14:15:19,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=139, PETRI_TRANSITIONS=141} [2025-03-17 14:15:19,331 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2025-03-17 14:15:19,332 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 141 transitions, 876 flow [2025-03-17 14:15:19,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2025-03-17 14:15:19,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:19,332 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] [2025-03-17 14:15:19,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 14:15:19,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:19,533 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:19,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1191537356, now seen corresponding path program 1 times [2025-03-17 14:15:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:19,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806968005] [2025-03-17 14:15:19,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:19,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:19,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:19,536 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:19,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 14:15:19,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:15:19,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:15:19,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:19,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:19,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:15:19,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:19,655 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 [2025-03-17 14:15:19,659 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 [2025-03-17 14:15:19,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:19,784 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 [2025-03-17 14:15:19,792 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:19,792 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 [2025-03-17 14:15:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:19,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:19,807 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:19,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806968005] [2025-03-17 14:15:19,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806968005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:19,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:19,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248066382] [2025-03-17 14:15:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:19,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:15:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:19,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:15:19,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:15:20,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 132 [2025-03-17 14:15:20,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 141 transitions, 876 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 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) [2025-03-17 14:15:20,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:20,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 132 [2025-03-17 14:15:20,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:20,773 INFO L124 PetriNetUnfolderBase]: 2032/4368 cut-off events. [2025-03-17 14:15:20,773 INFO L125 PetriNetUnfolderBase]: For 11116/11362 co-relation queries the response was YES. [2025-03-17 14:15:20,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14075 conditions, 4368 events. 2032/4368 cut-off events. For 11116/11362 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33385 event pairs, 390 based on Foata normal form. 68/4370 useless extension candidates. Maximal degree in co-relation 12533. Up to 1667 conditions per place. [2025-03-17 14:15:20,814 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 138 selfloop transitions, 24 changer transitions 0/213 dead transitions. [2025-03-17 14:15:20,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 213 transitions, 1533 flow [2025-03-17 14:15:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 623 transitions. [2025-03-17 14:15:20,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244107744107744 [2025-03-17 14:15:20,816 INFO L175 Difference]: Start difference. First operand has 139 places, 141 transitions, 876 flow. Second operand 9 states and 623 transitions. [2025-03-17 14:15:20,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 213 transitions, 1533 flow [2025-03-17 14:15:20,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 213 transitions, 1508 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:20,838 INFO L231 Difference]: Finished difference. Result has 143 places, 139 transitions, 899 flow [2025-03-17 14:15:20,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=899, PETRI_PLACES=143, PETRI_TRANSITIONS=139} [2025-03-17 14:15:20,839 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 21 predicate places. [2025-03-17 14:15:20,839 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 139 transitions, 899 flow [2025-03-17 14:15:20,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 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) [2025-03-17 14:15:20,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:20,840 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] [2025-03-17 14:15:20,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:21,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:21,044 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:21,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1880438392, now seen corresponding path program 1 times [2025-03-17 14:15:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199431979] [2025-03-17 14:15:21,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:21,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:21,048 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:21,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 14:15:21,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:15:21,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:15:21,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:21,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:21,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:15:21,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:21,159 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 [2025-03-17 14:15:21,162 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 [2025-03-17 14:15:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:21,261 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 [2025-03-17 14:15:21,269 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:21,269 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 [2025-03-17 14:15:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:21,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:21,281 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:21,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199431979] [2025-03-17 14:15:21,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199431979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:21,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:21,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:21,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983699113] [2025-03-17 14:15:21,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:21,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:15:21,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:21,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:15:21,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:15:21,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 132 [2025-03-17 14:15:21,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 139 transitions, 899 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 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) [2025-03-17 14:15:21,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:21,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 132 [2025-03-17 14:15:21,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:22,329 INFO L124 PetriNetUnfolderBase]: 2343/4902 cut-off events. [2025-03-17 14:15:22,329 INFO L125 PetriNetUnfolderBase]: For 13490/13795 co-relation queries the response was YES. [2025-03-17 14:15:22,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16051 conditions, 4902 events. 2343/4902 cut-off events. For 13490/13795 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 38079 event pairs, 679 based on Foata normal form. 82/4899 useless extension candidates. Maximal degree in co-relation 13359. Up to 1687 conditions per place. [2025-03-17 14:15:22,351 INFO L140 encePairwiseOnDemand]: 120/132 looper letters, 138 selfloop transitions, 24 changer transitions 0/211 dead transitions. [2025-03-17 14:15:22,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 211 transitions, 1564 flow [2025-03-17 14:15:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 623 transitions. [2025-03-17 14:15:22,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244107744107744 [2025-03-17 14:15:22,353 INFO L175 Difference]: Start difference. First operand has 143 places, 139 transitions, 899 flow. Second operand 9 states and 623 transitions. [2025-03-17 14:15:22,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 211 transitions, 1564 flow [2025-03-17 14:15:22,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 211 transitions, 1508 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 14:15:22,378 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 897 flow [2025-03-17 14:15:22,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=897, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2025-03-17 14:15:22,380 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 19 predicate places. [2025-03-17 14:15:22,380 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 897 flow [2025-03-17 14:15:22,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 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) [2025-03-17 14:15:22,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:22,380 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] [2025-03-17 14:15:22,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:22,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:22,581 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:22,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash -659159302, now seen corresponding path program 1 times [2025-03-17 14:15:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:22,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099645426] [2025-03-17 14:15:22,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:22,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:22,583 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:22,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 14:15:22,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 14:15:22,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 14:15:22,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:22,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:22,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:15:22,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:22,697 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:22,697 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:22,697 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:22,698 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 [2025-03-17 14:15:22,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:22,755 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 [2025-03-17 14:15:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:22,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:22,789 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099645426] [2025-03-17 14:15:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099645426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:22,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:22,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455000495] [2025-03-17 14:15:22,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:22,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:22,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:22,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:23,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 132 [2025-03-17 14:15:23,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 897 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 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) [2025-03-17 14:15:23,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:23,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 132 [2025-03-17 14:15:23,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:24,342 INFO L124 PetriNetUnfolderBase]: 2875/5592 cut-off events. [2025-03-17 14:15:24,342 INFO L125 PetriNetUnfolderBase]: For 18400/18856 co-relation queries the response was YES. [2025-03-17 14:15:24,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19940 conditions, 5592 events. 2875/5592 cut-off events. For 18400/18856 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 41332 event pairs, 984 based on Foata normal form. 187/5700 useless extension candidates. Maximal degree in co-relation 16935. Up to 2477 conditions per place. [2025-03-17 14:15:24,364 INFO L140 encePairwiseOnDemand]: 108/132 looper letters, 113 selfloop transitions, 67 changer transitions 0/216 dead transitions. [2025-03-17 14:15:24,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 216 transitions, 1785 flow [2025-03-17 14:15:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2025-03-17 14:15:24,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5865800865800865 [2025-03-17 14:15:24,366 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 897 flow. Second operand 7 states and 542 transitions. [2025-03-17 14:15:24,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 216 transitions, 1785 flow [2025-03-17 14:15:24,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 216 transitions, 1734 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 14:15:24,417 INFO L231 Difference]: Finished difference. Result has 146 places, 166 transitions, 1408 flow [2025-03-17 14:15:24,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1408, PETRI_PLACES=146, PETRI_TRANSITIONS=166} [2025-03-17 14:15:24,418 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 24 predicate places. [2025-03-17 14:15:24,418 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 166 transitions, 1408 flow [2025-03-17 14:15:24,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 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) [2025-03-17 14:15:24,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:24,418 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] [2025-03-17 14:15:24,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 14:15:24,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:24,619 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1040888750, now seen corresponding path program 1 times [2025-03-17 14:15:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836981539] [2025-03-17 14:15:24,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:24,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:24,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:24,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:24,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 14:15:24,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 14:15:24,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 14:15:24,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:24,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:24,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:15:24,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:24,801 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_87| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_87|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_87| (_ bv0 1)) |c_#valid|))) is different from true [2025-03-17 14:15:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:24,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:24,809 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:24,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836981539] [2025-03-17 14:15:24,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836981539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:24,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:24,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:24,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866304712] [2025-03-17 14:15:24,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:24,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:24,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:24,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:24,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-17 14:15:24,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 132 [2025-03-17 14:15:24,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 166 transitions, 1408 flow. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 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) [2025-03-17 14:15:24,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:24,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 132 [2025-03-17 14:15:24,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:25,779 INFO L124 PetriNetUnfolderBase]: 4102/7590 cut-off events. [2025-03-17 14:15:25,779 INFO L125 PetriNetUnfolderBase]: For 35472/35480 co-relation queries the response was YES. [2025-03-17 14:15:25,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31232 conditions, 7590 events. 4102/7590 cut-off events. For 35472/35480 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 56826 event pairs, 1742 based on Foata normal form. 5/7575 useless extension candidates. Maximal degree in co-relation 26177. Up to 3534 conditions per place. [2025-03-17 14:15:25,810 INFO L140 encePairwiseOnDemand]: 106/132 looper letters, 148 selfloop transitions, 37 changer transitions 4/215 dead transitions. [2025-03-17 14:15:25,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 215 transitions, 2098 flow [2025-03-17 14:15:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2025-03-17 14:15:25,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47424242424242424 [2025-03-17 14:15:25,811 INFO L175 Difference]: Start difference. First operand has 146 places, 166 transitions, 1408 flow. Second operand 5 states and 313 transitions. [2025-03-17 14:15:25,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 215 transitions, 2098 flow [2025-03-17 14:15:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 215 transitions, 2046 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:25,940 INFO L231 Difference]: Finished difference. Result has 153 places, 184 transitions, 1644 flow [2025-03-17 14:15:25,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1644, PETRI_PLACES=153, PETRI_TRANSITIONS=184} [2025-03-17 14:15:25,941 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 31 predicate places. [2025-03-17 14:15:25,941 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 184 transitions, 1644 flow [2025-03-17 14:15:25,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 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) [2025-03-17 14:15:25,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:25,941 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] [2025-03-17 14:15:25,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 14:15:26,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:26,142 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:26,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash 229295610, now seen corresponding path program 1 times [2025-03-17 14:15:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808178390] [2025-03-17 14:15:26,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:26,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:26,144 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:26,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 14:15:26,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 14:15:26,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 14:15:26,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:26,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:26,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:26,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:26,278 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 [2025-03-17 14:15:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:26,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:26,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:26,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808178390] [2025-03-17 14:15:26,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808178390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:26,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:26,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:26,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684846666] [2025-03-17 14:15:26,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:26,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:26,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:26,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:26,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-03-17 14:15:26,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 1644 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-03-17 14:15:26,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:26,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-03-17 14:15:26,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:27,062 INFO L124 PetriNetUnfolderBase]: 2841/5554 cut-off events. [2025-03-17 14:15:27,062 INFO L125 PetriNetUnfolderBase]: For 32773/33303 co-relation queries the response was YES. [2025-03-17 14:15:27,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25793 conditions, 5554 events. 2841/5554 cut-off events. For 32773/33303 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42438 event pairs, 1416 based on Foata normal form. 118/5477 useless extension candidates. Maximal degree in co-relation 21846. Up to 3762 conditions per place. [2025-03-17 14:15:27,102 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 103 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2025-03-17 14:15:27,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 190 transitions, 1912 flow [2025-03-17 14:15:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2025-03-17 14:15:27,103 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6540404040404041 [2025-03-17 14:15:27,103 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 1644 flow. Second operand 3 states and 259 transitions. [2025-03-17 14:15:27,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 190 transitions, 1912 flow [2025-03-17 14:15:27,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 190 transitions, 1815 flow, removed 26 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:27,211 INFO L231 Difference]: Finished difference. Result has 149 places, 182 transitions, 1557 flow [2025-03-17 14:15:27,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1557, PETRI_PLACES=149, PETRI_TRANSITIONS=182} [2025-03-17 14:15:27,211 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 27 predicate places. [2025-03-17 14:15:27,211 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 182 transitions, 1557 flow [2025-03-17 14:15:27,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-03-17 14:15:27,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:27,212 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] [2025-03-17 14:15:27,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 14:15:27,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:27,412 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:27,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1093068005, now seen corresponding path program 1 times [2025-03-17 14:15:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:27,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098748557] [2025-03-17 14:15:27,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:27,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:27,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:27,415 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:27,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 14:15:27,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 14:15:27,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 14:15:27,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:27,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:27,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:27,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:27,543 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 [2025-03-17 14:15:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:27,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:27,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098748557] [2025-03-17 14:15:27,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098748557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:27,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:27,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057006624] [2025-03-17 14:15:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:27,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:27,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:27,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:27,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 132 [2025-03-17 14:15:27,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 182 transitions, 1557 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-03-17 14:15:27,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:27,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 132 [2025-03-17 14:15:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:28,163 INFO L124 PetriNetUnfolderBase]: 2841/5546 cut-off events. [2025-03-17 14:15:28,163 INFO L125 PetriNetUnfolderBase]: For 28314/28837 co-relation queries the response was YES. [2025-03-17 14:15:28,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24960 conditions, 5546 events. 2841/5546 cut-off events. For 28314/28837 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42299 event pairs, 1416 based on Foata normal form. 118/5469 useless extension candidates. Maximal degree in co-relation 24274. Up to 3762 conditions per place. [2025-03-17 14:15:28,193 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 103 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-03-17 14:15:28,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 188 transitions, 1821 flow [2025-03-17 14:15:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2025-03-17 14:15:28,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6540404040404041 [2025-03-17 14:15:28,194 INFO L175 Difference]: Start difference. First operand has 149 places, 182 transitions, 1557 flow. Second operand 3 states and 259 transitions. [2025-03-17 14:15:28,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 188 transitions, 1821 flow [2025-03-17 14:15:28,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 188 transitions, 1811 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:28,274 INFO L231 Difference]: Finished difference. Result has 147 places, 180 transitions, 1553 flow [2025-03-17 14:15:28,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1553, PETRI_PLACES=147, PETRI_TRANSITIONS=180} [2025-03-17 14:15:28,275 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, 25 predicate places. [2025-03-17 14:15:28,275 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 180 transitions, 1553 flow [2025-03-17 14:15:28,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2025-03-17 14:15:28,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:28,275 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] [2025-03-17 14:15:28,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 14:15:28,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,475 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:28,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 149472865, now seen corresponding path program 1 times [2025-03-17 14:15:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075408337] [2025-03-17 14:15:28,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:28,478 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:28,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 14:15:28,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:15:28,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:28,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:28,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:28,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:28,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:28,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:28,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075408337] [2025-03-17 14:15:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075408337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:28,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548408576] [2025-03-17 14:15:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:28,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:28,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:28,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:28,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 132 [2025-03-17 14:15:28,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 180 transitions, 1553 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2025-03-17 14:15:28,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:28,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 132 [2025-03-17 14:15:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:28,777 INFO L124 PetriNetUnfolderBase]: 265/536 cut-off events. [2025-03-17 14:15:28,777 INFO L125 PetriNetUnfolderBase]: For 2688/2747 co-relation queries the response was YES. [2025-03-17 14:15:28,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 536 events. 265/536 cut-off events. For 2688/2747 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2174 event pairs, 49 based on Foata normal form. 50/566 useless extension candidates. Maximal degree in co-relation 2353. Up to 268 conditions per place. [2025-03-17 14:15:28,780 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 59 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2025-03-17 14:15:28,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 100 transitions, 801 flow [2025-03-17 14:15:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2025-03-17 14:15:28,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6401515151515151 [2025-03-17 14:15:28,781 INFO L175 Difference]: Start difference. First operand has 147 places, 180 transitions, 1553 flow. Second operand 4 states and 338 transitions. [2025-03-17 14:15:28,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 100 transitions, 801 flow [2025-03-17 14:15:28,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 533 flow, removed 34 selfloop flow, removed 38 redundant places. [2025-03-17 14:15:28,786 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 327 flow [2025-03-17 14:15:28,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=327, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2025-03-17 14:15:28,786 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -28 predicate places. [2025-03-17 14:15:28,786 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 327 flow [2025-03-17 14:15:28,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2025-03-17 14:15:28,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:28,786 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] [2025-03-17 14:15:28,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:28,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,987 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:28,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1759795013, now seen corresponding path program 1 times [2025-03-17 14:15:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105624775] [2025-03-17 14:15:28,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:28,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:28,989 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:28,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 14:15:29,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 14:15:29,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 14:15:29,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:29,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:29,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:29,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:29,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2025-03-17 14:15:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:29,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:29,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105624775] [2025-03-17 14:15:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105624775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:29,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:29,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:29,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890116488] [2025-03-17 14:15:29,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:29,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:29,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:29,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:29,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:29,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 132 [2025-03-17 14:15:29,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:29,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:29,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 132 [2025-03-17 14:15:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:29,518 INFO L124 PetriNetUnfolderBase]: 321/729 cut-off events. [2025-03-17 14:15:29,518 INFO L125 PetriNetUnfolderBase]: For 1600/1602 co-relation queries the response was YES. [2025-03-17 14:15:29,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 729 events. 321/729 cut-off events. For 1600/1602 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3615 event pairs, 28 based on Foata normal form. 12/736 useless extension candidates. Maximal degree in co-relation 2297. Up to 281 conditions per place. [2025-03-17 14:15:29,521 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 82 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2025-03-17 14:15:29,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 808 flow [2025-03-17 14:15:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2025-03-17 14:15:29,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222943722943723 [2025-03-17 14:15:29,522 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 327 flow. Second operand 7 states and 575 transitions. [2025-03-17 14:15:29,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 808 flow [2025-03-17 14:15:29,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 760 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:29,525 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 425 flow [2025-03-17 14:15:29,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2025-03-17 14:15:29,525 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -24 predicate places. [2025-03-17 14:15:29,525 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 425 flow [2025-03-17 14:15:29,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:29,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:29,526 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] [2025-03-17 14:15:29,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 14:15:29,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:29,726 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:29,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -330297205, now seen corresponding path program 2 times [2025-03-17 14:15:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060503114] [2025-03-17 14:15:29,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:15:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:29,730 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:29,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 14:15:29,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 1 equivalence classes. [2025-03-17 14:15:29,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 14:15:29,888 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:15:29,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:29,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:15:29,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:29,895 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 [2025-03-17 14:15:29,948 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 14:15:29,949 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 [2025-03-17 14:15:29,972 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 [2025-03-17 14:15:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:29,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:29,975 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060503114] [2025-03-17 14:15:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060503114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:29,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:29,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888973458] [2025-03-17 14:15:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:29,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:29,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:29,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:30,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 132 [2025-03-17 14:15:30,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2025-03-17 14:15:30,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:30,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 132 [2025-03-17 14:15:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:30,218 INFO L124 PetriNetUnfolderBase]: 317/673 cut-off events. [2025-03-17 14:15:30,218 INFO L125 PetriNetUnfolderBase]: For 1501/1511 co-relation queries the response was YES. [2025-03-17 14:15:30,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 673 events. 317/673 cut-off events. For 1501/1511 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3100 event pairs, 152 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 2286. Up to 394 conditions per place. [2025-03-17 14:15:30,221 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 75 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2025-03-17 14:15:30,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 111 transitions, 686 flow [2025-03-17 14:15:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2025-03-17 14:15:30,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2025-03-17 14:15:30,222 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 425 flow. Second operand 4 states and 294 transitions. [2025-03-17 14:15:30,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 111 transitions, 686 flow [2025-03-17 14:15:30,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 111 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:30,224 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 431 flow [2025-03-17 14:15:30,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=431, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2025-03-17 14:15:30,225 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -22 predicate places. [2025-03-17 14:15:30,225 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 431 flow [2025-03-17 14:15:30,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2025-03-17 14:15:30,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:30,225 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:30,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 14:15:30,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:30,426 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:30,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1933900326, now seen corresponding path program 1 times [2025-03-17 14:15:30,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:30,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352555199] [2025-03-17 14:15:30,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:30,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:30,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:30,428 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:30,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 14:15:30,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 14:15:30,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 14:15:30,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:30,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:30,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:30,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:30,591 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 [2025-03-17 14:15:30,594 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 [2025-03-17 14:15:30,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,729 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 [2025-03-17 14:15:30,736 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:30,737 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 [2025-03-17 14:15:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:30,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:30,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352555199] [2025-03-17 14:15:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352555199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103015298] [2025-03-17 14:15:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:30,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:30,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:30,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:30,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2025-03-17 14:15:30,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2025-03-17 14:15:30,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:30,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2025-03-17 14:15:30,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:31,006 INFO L124 PetriNetUnfolderBase]: 317/667 cut-off events. [2025-03-17 14:15:31,006 INFO L125 PetriNetUnfolderBase]: For 1509/1519 co-relation queries the response was YES. [2025-03-17 14:15:31,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 667 events. 317/667 cut-off events. For 1509/1519 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3033 event pairs, 221 based on Foata normal form. 3/645 useless extension candidates. Maximal degree in co-relation 2313. Up to 572 conditions per place. [2025-03-17 14:15:31,008 INFO L140 encePairwiseOnDemand]: 122/132 looper letters, 62 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2025-03-17 14:15:31,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 551 flow [2025-03-17 14:15:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2025-03-17 14:15:31,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2025-03-17 14:15:31,009 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 431 flow. Second operand 4 states and 273 transitions. [2025-03-17 14:15:31,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 551 flow [2025-03-17 14:15:31,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:31,011 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 413 flow [2025-03-17 14:15:31,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2025-03-17 14:15:31,012 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -28 predicate places. [2025-03-17 14:15:31,012 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 413 flow [2025-03-17 14:15:31,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2025-03-17 14:15:31,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:31,012 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] [2025-03-17 14:15:31,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-17 14:15:31,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,212 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:31,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2055839108, now seen corresponding path program 1 times [2025-03-17 14:15:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307251254] [2025-03-17 14:15:31,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:31,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:31,215 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:31,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 14:15:31,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 14:15:31,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 14:15:31,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:31,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:31,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:15:31,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:31,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,511 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:31,511 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:31,512 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 [2025-03-17 14:15:31,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:31,553 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 [2025-03-17 14:15:33,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:33,504 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 [2025-03-17 14:15:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:33,521 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:33,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307251254] [2025-03-17 14:15:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307251254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 14:15:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932941956] [2025-03-17 14:15:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:33,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 14:15:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:33,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 14:15:33,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-03-17 14:15:35,384 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] [2025-03-17 14:15:37,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:38,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:42,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:44,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:46,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:48,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:49,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:51,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:53,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:55,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:57,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:59,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:01,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:03,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:04,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:06,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:08,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:10,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:12,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:16,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:18,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:20,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:22,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:24,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:25,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:27,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:29,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:29,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 132 [2025-03-17 14:16:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 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) [2025-03-17 14:16:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:29,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 132 [2025-03-17 14:16:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:34,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:38,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:41,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:43,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]