./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_2-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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:15:01,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:15:01,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:15:01,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:15:01,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:15:01,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:15:01,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:15:01,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:15:01,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:15:01,548 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:15:01,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:15:01,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:15:01,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:15:01,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:15:01,549 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:15:01,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:15:01,550 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:15:01,551 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:01,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:15:01,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:15:01,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:15:01,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:15:01,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:15:01,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:15:01,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:15:01,552 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-03-17 14:15:01,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:15:01,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:15:01,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:15:01,797 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:15:01,797 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:15:01,798 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-17 14:15:02,959 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d1d7cfc/be2d1df6e5b345dc9603bbfeaee07e06/FLAG7d96e1678 [2025-03-17 14:15:03,327 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:03,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-17 14:15:03,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d1d7cfc/be2d1df6e5b345dc9603bbfeaee07e06/FLAG7d96e1678 [2025-03-17 14:15:03,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d1d7cfc/be2d1df6e5b345dc9603bbfeaee07e06 [2025-03-17 14:15:03,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:03,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:03,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:03,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:03,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:03,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:03" (1/1) ... [2025-03-17 14:15:03,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51debc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:03, skipping insertion in model container [2025-03-17 14:15:03,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:03" (1/1) ... [2025-03-17 14:15:03,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:03,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:03,681 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 14:15:03,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3cc7dd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:03, skipping insertion in model container [2025-03-17 14:15:03,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:03,682 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 14:15:03,685 INFO L158 Benchmark]: Toolchain (without parser) took 305.46ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:03,685 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:15:03,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.14ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:03,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.14ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 91.7MB 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: 3904]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/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_2-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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:15:05,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:15:05,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 14:15:05,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:15:05,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:15:05,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:15:05,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:15:05,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:15:05,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:15:05,464 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:15:05,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:15:05,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:15:05,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:15:05,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:15:05,464 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:15:05,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:15:05,464 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:15:05,465 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:15:05,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:05,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:15:05,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:15:05,466 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 -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2025-03-17 14:15:05,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:15:05,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:15:05,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:15:05,742 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:15:05,744 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:15:05,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-17 14:15:06,888 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be508477/db033894411d46d6916976e8f1360225/FLAGa54285bb5 [2025-03-17 14:15:07,162 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:07,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2025-03-17 14:15:07,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be508477/db033894411d46d6916976e8f1360225/FLAGa54285bb5 [2025-03-17 14:15:07,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3be508477/db033894411d46d6916976e8f1360225 [2025-03-17 14:15:07,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:07,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:07,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:07,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:07,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:07,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:07" (1/1) ... [2025-03-17 14:15:07,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7a081e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:07, skipping insertion in model container [2025-03-17 14:15:07,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:07" (1/1) ... [2025-03-17 14:15:07,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:07,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:07,854 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 14:15:07,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:07,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:07,918 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:15:07,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:07,999 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:15:08,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08 WrapperNode [2025-03-17 14:15:08,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:08,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:08,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:15:08,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:15:08,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,045 INFO L138 Inliner]: procedures = 249, calls = 44, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 143 [2025-03-17 14:15:08,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:08,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:15:08,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:15:08,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:15:08,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,075 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 14:15:08,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,093 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:15:08,104 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:15:08,104 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:15:08,104 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:15:08,105 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (1/1) ... [2025-03-17 14:15:08,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:08,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:08,129 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 14:15:08,134 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 14:15:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-17 14:15:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 14:15:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 14:15:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 14:15:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:15:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:15:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 14:15:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 14:15:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 14:15:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:15:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:15:08,154 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 14:15:08,405 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:15:08,407 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:15:08,813 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:15:08,813 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:15:08,940 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:15:08,946 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:15:08,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:08 BoogieIcfgContainer [2025-03-17 14:15:08,946 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:15:08,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:15:08,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:15:08,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:15:08,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:15:07" (1/3) ... [2025-03-17 14:15:08,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271ee9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:08, skipping insertion in model container [2025-03-17 14:15:08,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:08" (2/3) ... [2025-03-17 14:15:08,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7271ee9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:08, skipping insertion in model container [2025-03-17 14:15:08,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:08" (3/3) ... [2025-03-17 14:15:08,955 INFO L128 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2025-03-17 14:15:08,966 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:15:08,967 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-3_2-container_of-global.i that has 2 procedures, 100 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-03-17 14:15:08,968 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:15:09,024 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 14:15:09,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 266 flow [2025-03-17 14:15:09,110 INFO L124 PetriNetUnfolderBase]: 18/159 cut-off events. [2025-03-17 14:15:09,112 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:15:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 18/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 471 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2025-03-17 14:15:09,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 266 flow [2025-03-17 14:15:09,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 260 flow [2025-03-17 14:15:09,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:15:09,137 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;@7254a122, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:15:09,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-17 14:15:09,141 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:15:09,142 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-17 14:15:09,142 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:15:09,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:09,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:09,143 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 14:15:09,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash 484136, now seen corresponding path program 1 times [2025-03-17 14:15:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:09,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936779769] [2025-03-17 14:15:09,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:09,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:09,163 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 14:15:09,165 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 14:15:09,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:09,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:09,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:09,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:09,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:15:09,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:09,304 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 14:15:09,318 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 14:15:09,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:09,319 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936779769] [2025-03-17 14:15:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936779769] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:09,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:09,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595161839] [2025-03-17 14:15:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:09,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:09,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:09,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:09,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2025-03-17 14:15:09,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 14:15:09,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:09,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2025-03-17 14:15:09,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:10,348 INFO L124 PetriNetUnfolderBase]: 2807/7413 cut-off events. [2025-03-17 14:15:10,349 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-17 14:15:10,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11922 conditions, 7413 events. 2807/7413 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 73381 event pairs, 407 based on Foata normal form. 588/5507 useless extension candidates. Maximal degree in co-relation 11684. Up to 3737 conditions per place. [2025-03-17 14:15:10,390 INFO L140 encePairwiseOnDemand]: 108/126 looper letters, 77 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2025-03-17 14:15:10,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 418 flow [2025-03-17 14:15:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2025-03-17 14:15:10,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2025-03-17 14:15:10,405 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 260 flow. Second operand 3 states and 236 transitions. [2025-03-17 14:15:10,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 418 flow [2025-03-17 14:15:10,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 124 transitions, 410 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:10,415 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 212 flow [2025-03-17 14:15:10,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2025-03-17 14:15:10,421 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -12 predicate places. [2025-03-17 14:15:10,422 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 212 flow [2025-03-17 14:15:10,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 14:15:10,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:10,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:10,432 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 14:15:10,624 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 14:15:10,624 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 14:15:10,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 484137, now seen corresponding path program 1 times [2025-03-17 14:15:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669146563] [2025-03-17 14:15:10,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:10,628 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 14:15:10,629 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 14:15:10,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:10,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:10,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:10,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:10,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:10,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:10,746 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 14:15:10,753 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 14:15:10,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:10,754 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669146563] [2025-03-17 14:15:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669146563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:10,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132429346] [2025-03-17 14:15:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:10,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:10,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:10,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:10,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2025-03-17 14:15:10,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 14:15:10,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:10,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2025-03-17 14:15:10,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:11,520 INFO L124 PetriNetUnfolderBase]: 2807/7409 cut-off events. [2025-03-17 14:15:11,520 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2025-03-17 14:15:11,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12035 conditions, 7409 events. 2807/7409 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 73375 event pairs, 407 based on Foata normal form. 2/4917 useless extension candidates. Maximal degree in co-relation 1475. Up to 3737 conditions per place. [2025-03-17 14:15:11,550 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 75 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2025-03-17 14:15:11,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 120 transitions, 402 flow [2025-03-17 14:15:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2025-03-17 14:15:11,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-17 14:15:11,554 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 212 flow. Second operand 3 states and 228 transitions. [2025-03-17 14:15:11,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 120 transitions, 402 flow [2025-03-17 14:15:11,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:11,556 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 204 flow [2025-03-17 14:15:11,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2025-03-17 14:15:11,559 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-03-17 14:15:11,559 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 204 flow [2025-03-17 14:15:11,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 14:15:11,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:11,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 14:15:11,568 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 14:15:11,764 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 14:15:11,764 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 14:15:11,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:11,764 INFO L85 PathProgramCache]: Analyzing trace with hash 15006698, now seen corresponding path program 1 times [2025-03-17 14:15:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:11,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173945913] [2025-03-17 14:15:11,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:11,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:11,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:11,767 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 14:15:11,768 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 14:15:11,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 14:15:11,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 14:15:11,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:11,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:11,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 14:15:11,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:11,848 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 14:15:11,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:11,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173945913] [2025-03-17 14:15:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173945913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:11,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:11,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:15:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141894538] [2025-03-17 14:15:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:11,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:11,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:11,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:11,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2025-03-17 14:15:11,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 14:15:11,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:11,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2025-03-17 14:15:11,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:12,432 INFO L124 PetriNetUnfolderBase]: 3071/5915 cut-off events. [2025-03-17 14:15:12,432 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-17 14:15:12,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 5915 events. 3071/5915 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 42818 event pairs, 2805 based on Foata normal form. 0/3769 useless extension candidates. Maximal degree in co-relation 3307. Up to 4464 conditions per place. [2025-03-17 14:15:12,456 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 75 selfloop transitions, 3 changer transitions 2/121 dead transitions. [2025-03-17 14:15:12,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 408 flow [2025-03-17 14:15:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2025-03-17 14:15:12,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2025-03-17 14:15:12,462 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 204 flow. Second operand 3 states and 236 transitions. [2025-03-17 14:15:12,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 408 flow [2025-03-17 14:15:12,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 121 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:12,467 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 209 flow [2025-03-17 14:15:12,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2025-03-17 14:15:12,469 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -15 predicate places. [2025-03-17 14:15:12,469 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 209 flow [2025-03-17 14:15:12,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 14:15:12,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:12,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:12,478 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 14:15:12,669 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 14:15:12,670 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 14:15:12,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 940331787, now seen corresponding path program 1 times [2025-03-17 14:15:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148945898] [2025-03-17 14:15:12,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:12,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:12,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:12,673 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 14:15:12,674 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 14:15:12,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:15:12,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:15:12,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:12,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:12,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:15:12,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:12,790 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:12,791 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:12,791 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:12,797 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 14:15:12,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:12,860 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 14:15:12,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:12,943 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 14:15:12,960 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 14:15:12,960 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:12,961 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148945898] [2025-03-17 14:15:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148945898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:12,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:12,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401848069] [2025-03-17 14:15:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:12,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:12,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:12,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:13,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2025-03-17 14:15:13,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 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 14:15:13,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:13,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2025-03-17 14:15:13,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:13,817 INFO L124 PetriNetUnfolderBase]: 3334/6269 cut-off events. [2025-03-17 14:15:13,818 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2025-03-17 14:15:13,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11862 conditions, 6269 events. 3334/6269 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 44945 event pairs, 2151 based on Foata normal form. 1/4282 useless extension candidates. Maximal degree in co-relation 10888. Up to 5196 conditions per place. [2025-03-17 14:15:13,846 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 63 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2025-03-17 14:15:13,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 368 flow [2025-03-17 14:15:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2025-03-17 14:15:13,849 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5015873015873016 [2025-03-17 14:15:13,849 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 209 flow. Second operand 5 states and 316 transitions. [2025-03-17 14:15:13,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 368 flow [2025-03-17 14:15:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 357 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:13,876 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 224 flow [2025-03-17 14:15:13,876 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2025-03-17 14:15:13,877 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -16 predicate places. [2025-03-17 14:15:13,877 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 224 flow [2025-03-17 14:15:13,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 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 14:15:13,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:13,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:13,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:14,079 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 14:15:14,080 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 14:15:14,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1653478564, now seen corresponding path program 1 times [2025-03-17 14:15:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554259819] [2025-03-17 14:15:14,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:14,083 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 14:15:14,085 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 14:15:14,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:15:14,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:15:14,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:14,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:14,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:14,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:14,194 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:14,196 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 14:15:14,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:14,329 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 14:15:14,343 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 14:15:14,343 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:14,343 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554259819] [2025-03-17 14:15:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554259819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:14,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:14,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:14,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371521659] [2025-03-17 14:15:14,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:14,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:14,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:14,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:14,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-03-17 14:15:14,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 14:15:14,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:14,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-03-17 14:15:14,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:15,105 INFO L124 PetriNetUnfolderBase]: 3862/7154 cut-off events. [2025-03-17 14:15:15,105 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2025-03-17 14:15:15,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 7154 events. 3862/7154 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 51278 event pairs, 2535 based on Foata normal form. 0/4834 useless extension candidates. Maximal degree in co-relation 7462. Up to 6016 conditions per place. [2025-03-17 14:15:15,128 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 65 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2025-03-17 14:15:15,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 385 flow [2025-03-17 14:15:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 295 transitions. [2025-03-17 14:15:15,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2025-03-17 14:15:15,131 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 224 flow. Second operand 5 states and 295 transitions. [2025-03-17 14:15:15,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 385 flow [2025-03-17 14:15:15,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:15,133 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 228 flow [2025-03-17 14:15:15,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2025-03-17 14:15:15,133 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -18 predicate places. [2025-03-17 14:15:15,133 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 228 flow [2025-03-17 14:15:15,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 14:15:15,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:15,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:15,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:15,334 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 14:15:15,335 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:15,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash -198594153, now seen corresponding path program 1 times [2025-03-17 14:15:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:15,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745386991] [2025-03-17 14:15:15,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:15,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:15,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:15,338 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 14:15:15,339 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 14:15:15,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:15:15,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:15:15,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:15,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:15,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:15,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:15,452 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 14:15:15,535 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 14:15:15,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:15,536 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:15,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745386991] [2025-03-17 14:15:15,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745386991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:15,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:15,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:15,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533521093] [2025-03-17 14:15:15,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:15,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:15,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:15,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:15,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2025-03-17 14:15:15,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 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 14:15:15,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:15,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2025-03-17 14:15:15,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:16,438 INFO L124 PetriNetUnfolderBase]: 2110/5620 cut-off events. [2025-03-17 14:15:16,438 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2025-03-17 14:15:16,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9419 conditions, 5620 events. 2110/5620 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 52353 event pairs, 91 based on Foata normal form. 0/4126 useless extension candidates. Maximal degree in co-relation 4468. Up to 2240 conditions per place. [2025-03-17 14:15:16,450 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 125 selfloop transitions, 11 changer transitions 2/176 dead transitions. [2025-03-17 14:15:16,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 176 transitions, 693 flow [2025-03-17 14:15:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 483 transitions. [2025-03-17 14:15:16,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2025-03-17 14:15:16,452 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 228 flow. Second operand 7 states and 483 transitions. [2025-03-17 14:15:16,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 176 transitions, 693 flow [2025-03-17 14:15:16,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 176 transitions, 671 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:16,454 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 273 flow [2025-03-17 14:15:16,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2025-03-17 14:15:16,455 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -14 predicate places. [2025-03-17 14:15:16,455 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 273 flow [2025-03-17 14:15:16,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 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 14:15:16,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:16,455 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:16,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:16,656 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 14:15:16,656 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:16,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:16,656 INFO L85 PathProgramCache]: Analyzing trace with hash -198594154, now seen corresponding path program 1 times [2025-03-17 14:15:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781625074] [2025-03-17 14:15:16,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:16,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:16,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:16,661 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 14:15:16,662 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 14:15:16,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:15:16,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:15:16,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:16,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:16,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:16,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:16,790 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 14:15:16,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:16,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:16,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781625074] [2025-03-17 14:15:16,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781625074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:16,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:16,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:16,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659084908] [2025-03-17 14:15:16,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:16,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:16,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:16,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:16,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:16,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2025-03-17 14:15:16,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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 14:15:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2025-03-17 14:15:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:17,568 INFO L124 PetriNetUnfolderBase]: 1595/4150 cut-off events. [2025-03-17 14:15:17,569 INFO L125 PetriNetUnfolderBase]: For 878/878 co-relation queries the response was YES. [2025-03-17 14:15:17,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 4150 events. 1595/4150 cut-off events. For 878/878 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 35977 event pairs, 95 based on Foata normal form. 110/3334 useless extension candidates. Maximal degree in co-relation 1566. Up to 1341 conditions per place. [2025-03-17 14:15:17,579 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 131 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2025-03-17 14:15:17,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 751 flow [2025-03-17 14:15:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 526 transitions. [2025-03-17 14:15:17,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218253968253969 [2025-03-17 14:15:17,580 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 273 flow. Second operand 8 states and 526 transitions. [2025-03-17 14:15:17,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 751 flow [2025-03-17 14:15:17,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 183 transitions, 751 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:17,584 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 373 flow [2025-03-17 14:15:17,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=373, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-03-17 14:15:17,584 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -2 predicate places. [2025-03-17 14:15:17,584 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 373 flow [2025-03-17 14:15:17,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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 14:15:17,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:17,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:17,595 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 14:15:17,785 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 14:15:17,785 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:17,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1863954356, now seen corresponding path program 1 times [2025-03-17 14:15:17,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:17,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67381617] [2025-03-17 14:15:17,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:17,788 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 14:15:17,788 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 14:15:17,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:17,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:17,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:17,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:17,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:17,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:17,883 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 14:15:17,906 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 14:15:17,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:17,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67381617] [2025-03-17 14:15:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67381617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556873501] [2025-03-17 14:15:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:17,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:17,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:17,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:17,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2025-03-17 14:15:17,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 14:15:17,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:17,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2025-03-17 14:15:17,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:18,337 INFO L124 PetriNetUnfolderBase]: 1847/3929 cut-off events. [2025-03-17 14:15:18,337 INFO L125 PetriNetUnfolderBase]: For 3767/3767 co-relation queries the response was YES. [2025-03-17 14:15:18,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 3929 events. 1847/3929 cut-off events. For 3767/3767 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 28763 event pairs, 1213 based on Foata normal form. 0/3394 useless extension candidates. Maximal degree in co-relation 7975. Up to 2266 conditions per place. [2025-03-17 14:15:18,350 INFO L140 encePairwiseOnDemand]: 117/126 looper letters, 79 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2025-03-17 14:15:18,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 567 flow [2025-03-17 14:15:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2025-03-17 14:15:18,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5608465608465608 [2025-03-17 14:15:18,351 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 373 flow. Second operand 3 states and 212 transitions. [2025-03-17 14:15:18,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 567 flow [2025-03-17 14:15:18,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 115 transitions, 557 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:18,355 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 365 flow [2025-03-17 14:15:18,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2025-03-17 14:15:18,356 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -8 predicate places. [2025-03-17 14:15:18,356 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 365 flow [2025-03-17 14:15:18,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 14:15:18,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:18,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:18,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 14:15:18,556 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 14:15:18,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:18,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1863954355, now seen corresponding path program 1 times [2025-03-17 14:15:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592652840] [2025-03-17 14:15:18,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:18,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:18,559 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 14:15:18,560 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 14:15:18,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:18,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:18,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:18,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:18,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:15:18,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:18,663 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 14:15:18,712 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 14:15:18,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:18,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592652840] [2025-03-17 14:15:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592652840] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:18,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:18,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020314065] [2025-03-17 14:15:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:18,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:18,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:18,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:18,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:18,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2025-03-17 14:15:18,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 14:15:18,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:18,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2025-03-17 14:15:18,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:19,119 INFO L124 PetriNetUnfolderBase]: 1595/3452 cut-off events. [2025-03-17 14:15:19,119 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2025-03-17 14:15:19,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8157 conditions, 3452 events. 1595/3452 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 24615 event pairs, 859 based on Foata normal form. 104/3073 useless extension candidates. Maximal degree in co-relation 7000. Up to 1548 conditions per place. [2025-03-17 14:15:19,130 INFO L140 encePairwiseOnDemand]: 119/126 looper letters, 89 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2025-03-17 14:15:19,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 122 transitions, 611 flow [2025-03-17 14:15:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2025-03-17 14:15:19,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2025-03-17 14:15:19,131 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 365 flow. Second operand 3 states and 226 transitions. [2025-03-17 14:15:19,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 122 transitions, 611 flow [2025-03-17 14:15:19,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 122 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:19,137 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 385 flow [2025-03-17 14:15:19,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2025-03-17 14:15:19,137 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -7 predicate places. [2025-03-17 14:15:19,137 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 385 flow [2025-03-17 14:15:19,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 14:15:19,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:19,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:19,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 14:15:19,338 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 14:15:19,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:19,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1871884619, now seen corresponding path program 1 times [2025-03-17 14:15:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150527784] [2025-03-17 14:15:19,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:19,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:19,342 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 14:15:19,343 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 14:15:19,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:15:19,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:15:19,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:19,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:19,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:19,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:19,445 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 14:15:19,505 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 14:15:19,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:19,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:19,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150527784] [2025-03-17 14:15:19,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150527784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:19,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:19,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920534015] [2025-03-17 14:15:19,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:19,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:19,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:19,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:19,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 126 [2025-03-17 14:15:19,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 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 14:15:19,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:19,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 126 [2025-03-17 14:15:19,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:20,201 INFO L124 PetriNetUnfolderBase]: 1208/2759 cut-off events. [2025-03-17 14:15:20,201 INFO L125 PetriNetUnfolderBase]: For 2386/2386 co-relation queries the response was YES. [2025-03-17 14:15:20,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6576 conditions, 2759 events. 1208/2759 cut-off events. For 2386/2386 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19337 event pairs, 93 based on Foata normal form. 0/2542 useless extension candidates. Maximal degree in co-relation 5693. Up to 1352 conditions per place. [2025-03-17 14:15:20,209 INFO L140 encePairwiseOnDemand]: 118/126 looper letters, 113 selfloop transitions, 16 changer transitions 1/163 dead transitions. [2025-03-17 14:15:20,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 896 flow [2025-03-17 14:15:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:20,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 459 transitions. [2025-03-17 14:15:20,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2025-03-17 14:15:20,211 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 385 flow. Second operand 7 states and 459 transitions. [2025-03-17 14:15:20,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 896 flow [2025-03-17 14:15:20,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 163 transitions, 886 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:20,216 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 484 flow [2025-03-17 14:15:20,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2025-03-17 14:15:20,217 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2025-03-17 14:15:20,217 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 484 flow [2025-03-17 14:15:20,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 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 14:15:20,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:20,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:20,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 14:15:20,418 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 14:15:20,418 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:20,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1871884620, now seen corresponding path program 1 times [2025-03-17 14:15:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315562998] [2025-03-17 14:15:20,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:20,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:20,421 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 14:15:20,421 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 14:15:20,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:15:20,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:15:20,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:20,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:20,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:20,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:20,519 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 14:15:20,551 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 14:15:20,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:20,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315562998] [2025-03-17 14:15:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315562998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795710694] [2025-03-17 14:15:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:20,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:20,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:20,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:20,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 126 [2025-03-17 14:15:20,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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 14:15:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 126 [2025-03-17 14:15:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:21,125 INFO L124 PetriNetUnfolderBase]: 1010/2266 cut-off events. [2025-03-17 14:15:21,125 INFO L125 PetriNetUnfolderBase]: For 2684/2684 co-relation queries the response was YES. [2025-03-17 14:15:21,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 2266 events. 1010/2266 cut-off events. For 2684/2684 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15214 event pairs, 153 based on Foata normal form. 59/2262 useless extension candidates. Maximal degree in co-relation 5011. Up to 709 conditions per place. [2025-03-17 14:15:21,132 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 116 selfloop transitions, 21 changer transitions 0/168 dead transitions. [2025-03-17 14:15:21,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 168 transitions, 990 flow [2025-03-17 14:15:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2025-03-17 14:15:21,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.498015873015873 [2025-03-17 14:15:21,135 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 484 flow. Second operand 8 states and 502 transitions. [2025-03-17 14:15:21,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 168 transitions, 990 flow [2025-03-17 14:15:21,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 168 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:21,142 INFO L231 Difference]: Finished difference. Result has 127 places, 115 transitions, 610 flow [2025-03-17 14:15:21,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=610, PETRI_PLACES=127, PETRI_TRANSITIONS=115} [2025-03-17 14:15:21,143 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 11 predicate places. [2025-03-17 14:15:21,143 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 115 transitions, 610 flow [2025-03-17 14:15:21,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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 14:15:21,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:21,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:21,155 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 14:15:21,344 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 14:15:21,344 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:21,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash 210199280, now seen corresponding path program 1 times [2025-03-17 14:15:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:21,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743342523] [2025-03-17 14:15:21,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:21,346 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 14:15:21,347 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 14:15:21,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:15:21,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:15:21,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:21,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:21,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 14:15:21,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:21,457 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 14:15:21,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:21,596 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 14:15:21,606 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:21,606 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 14:15:21,618 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 14:15:21,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:21,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743342523] [2025-03-17 14:15:21,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743342523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:21,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:21,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:15:21,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488040199] [2025-03-17 14:15:21,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:21,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:15:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:21,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:15:21,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:15:22,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 126 [2025-03-17 14:15:22,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 115 transitions, 610 flow. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 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 14:15:22,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:22,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 126 [2025-03-17 14:15:22,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:22,732 INFO L124 PetriNetUnfolderBase]: 1169/2558 cut-off events. [2025-03-17 14:15:22,732 INFO L125 PetriNetUnfolderBase]: For 5205/5205 co-relation queries the response was YES. [2025-03-17 14:15:22,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7531 conditions, 2558 events. 1169/2558 cut-off events. For 5205/5205 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17745 event pairs, 320 based on Foata normal form. 27/2574 useless extension candidates. Maximal degree in co-relation 6599. Up to 660 conditions per place. [2025-03-17 14:15:22,740 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 134 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2025-03-17 14:15:22,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 186 transitions, 1212 flow [2025-03-17 14:15:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 525 transitions. [2025-03-17 14:15:22,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2025-03-17 14:15:22,742 INFO L175 Difference]: Start difference. First operand has 127 places, 115 transitions, 610 flow. Second operand 9 states and 525 transitions. [2025-03-17 14:15:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 186 transitions, 1212 flow [2025-03-17 14:15:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 1184 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 14:15:22,750 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 624 flow [2025-03-17 14:15:22,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2025-03-17 14:15:22,751 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 12 predicate places. [2025-03-17 14:15:22,751 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 624 flow [2025-03-17 14:15:22,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 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 14:15:22,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:22,751 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:22,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:22,951 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 14:15:22,951 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 14:15:22,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash 459806318, now seen corresponding path program 1 times [2025-03-17 14:15:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741656550] [2025-03-17 14:15:22,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:22,954 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 14:15:22,955 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 14:15:23,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:15:23,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:15:23,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:23,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:23,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:15:23,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:23,058 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 14:15:23,062 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 14:15:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:23,182 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 14:15:23,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:23,192 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 14:15:23,202 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 14:15:23,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:23,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741656550] [2025-03-17 14:15:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741656550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150843182] [2025-03-17 14:15:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:15:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:23,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:15:23,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:15:23,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2025-03-17 14:15:23,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 624 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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 14:15:23,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:23,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2025-03-17 14:15:23,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:24,071 INFO L124 PetriNetUnfolderBase]: 1416/3003 cut-off events. [2025-03-17 14:15:24,071 INFO L125 PetriNetUnfolderBase]: For 6436/6436 co-relation queries the response was YES. [2025-03-17 14:15:24,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9258 conditions, 3003 events. 1416/3003 cut-off events. For 6436/6436 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21544 event pairs, 498 based on Foata normal form. 24/3019 useless extension candidates. Maximal degree in co-relation 6680. Up to 616 conditions per place. [2025-03-17 14:15:24,083 INFO L140 encePairwiseOnDemand]: 114/126 looper letters, 129 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2025-03-17 14:15:24,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 183 transitions, 1236 flow [2025-03-17 14:15:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2025-03-17 14:15:24,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47178130511463845 [2025-03-17 14:15:24,085 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 624 flow. Second operand 9 states and 535 transitions. [2025-03-17 14:15:24,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 183 transitions, 1236 flow [2025-03-17 14:15:24,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 183 transitions, 1184 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 14:15:24,095 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 618 flow [2025-03-17 14:15:24,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=618, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2025-03-17 14:15:24,096 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 10 predicate places. [2025-03-17 14:15:24,096 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 618 flow [2025-03-17 14:15:24,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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 14:15:24,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:24,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:24,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 14:15:24,300 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 14:15:24,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:24,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:24,301 INFO L85 PathProgramCache]: Analyzing trace with hash 700436105, now seen corresponding path program 1 times [2025-03-17 14:15:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:24,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855750245] [2025-03-17 14:15:24,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:24,304 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 14:15:24,305 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 14:15:24,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 14:15:24,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 14:15:24,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:24,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:24,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:15:24,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:24,415 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:24,415 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:24,415 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:24,416 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 14:15:24,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:24,453 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 14:15:24,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:24,474 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 14:15:24,482 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 14:15:24,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:24,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:24,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855750245] [2025-03-17 14:15:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855750245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:24,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:24,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:24,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363225100] [2025-03-17 14:15:24,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:24,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:24,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:24,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:24,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-03-17 14:15:24,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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 14:15:24,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:24,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-03-17 14:15:24,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:25,753 INFO L124 PetriNetUnfolderBase]: 2004/3835 cut-off events. [2025-03-17 14:15:25,754 INFO L125 PetriNetUnfolderBase]: For 8518/8518 co-relation queries the response was YES. [2025-03-17 14:15:25,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12296 conditions, 3835 events. 2004/3835 cut-off events. For 8518/8518 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 26338 event pairs, 938 based on Foata normal form. 0/3711 useless extension candidates. Maximal degree in co-relation 9222. Up to 2240 conditions per place. [2025-03-17 14:15:25,768 INFO L140 encePairwiseOnDemand]: 102/126 looper letters, 104 selfloop transitions, 43 changer transitions 0/171 dead transitions. [2025-03-17 14:15:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 171 transitions, 1224 flow [2025-03-17 14:15:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2025-03-17 14:15:25,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48072562358276644 [2025-03-17 14:15:25,769 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 618 flow. Second operand 7 states and 424 transitions. [2025-03-17 14:15:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 171 transitions, 1224 flow [2025-03-17 14:15:25,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 171 transitions, 1177 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 14:15:25,782 INFO L231 Difference]: Finished difference. Result has 131 places, 131 transitions, 876 flow [2025-03-17 14:15:25,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=131, PETRI_TRANSITIONS=131} [2025-03-17 14:15:25,783 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 15 predicate places. [2025-03-17 14:15:25,783 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 131 transitions, 876 flow [2025-03-17 14:15:25,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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 14:15:25,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:25,783 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 14:15:25,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 14:15:25,983 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 14:15:25,984 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 14:15:25,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1772326738, now seen corresponding path program 1 times [2025-03-17 14:15:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309340831] [2025-03-17 14:15:25,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:25,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:25,986 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 14:15:25,987 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 14:15:26,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 14:15:26,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 14:15:26,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:26,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:26,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:15:26,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:26,101 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:26,102 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:26,102 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:26,103 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 14:15:26,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:26,165 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 14:15:26,173 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 14:15:26,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:26,174 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:26,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309340831] [2025-03-17 14:15:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309340831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:26,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452001285] [2025-03-17 14:15:26,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:26,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:26,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:26,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:26,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 126 [2025-03-17 14:15:26,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 131 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 14:15:26,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:26,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 126 [2025-03-17 14:15:26,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:27,732 INFO L124 PetriNetUnfolderBase]: 2436/4531 cut-off events. [2025-03-17 14:15:27,732 INFO L125 PetriNetUnfolderBase]: For 14206/14206 co-relation queries the response was YES. [2025-03-17 14:15:27,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17758 conditions, 4531 events. 2436/4531 cut-off events. For 14206/14206 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30996 event pairs, 950 based on Foata normal form. 102/4610 useless extension candidates. Maximal degree in co-relation 13929. Up to 2388 conditions per place. [2025-03-17 14:15:27,753 INFO L140 encePairwiseOnDemand]: 102/126 looper letters, 109 selfloop transitions, 67 changer transitions 0/200 dead transitions. [2025-03-17 14:15:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 200 transitions, 1752 flow [2025-03-17 14:15:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2025-03-17 14:15:27,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48072562358276644 [2025-03-17 14:15:27,754 INFO L175 Difference]: Start difference. First operand has 131 places, 131 transitions, 876 flow. Second operand 7 states and 424 transitions. [2025-03-17 14:15:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 200 transitions, 1752 flow [2025-03-17 14:15:27,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 200 transitions, 1732 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:27,797 INFO L231 Difference]: Finished difference. Result has 142 places, 160 transitions, 1414 flow [2025-03-17 14:15:27,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1414, PETRI_PLACES=142, PETRI_TRANSITIONS=160} [2025-03-17 14:15:27,798 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 26 predicate places. [2025-03-17 14:15:27,798 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 160 transitions, 1414 flow [2025-03-17 14:15:27,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 14:15:27,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:27,798 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 14:15:27,809 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 14:15:27,999 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 14:15:27,999 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 14:15:27,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -892462678, now seen corresponding path program 1 times [2025-03-17 14:15:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888183512] [2025-03-17 14:15:28,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:28,002 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 14:15:28,003 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 14:15:28,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 14:15:28,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 14:15:28,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:28,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:28,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:15:28,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:28,211 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_89| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_89| (_ bv0 1))))) is different from true [2025-03-17 14:15:28,219 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 14:15:28,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:28,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:28,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888183512] [2025-03-17 14:15:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888183512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190765100] [2025-03-17 14:15:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:28,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:28,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-17 14:15:28,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 126 [2025-03-17 14:15:28,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 160 transitions, 1414 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 14:15:28,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:28,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 126 [2025-03-17 14:15:28,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:28,969 INFO L124 PetriNetUnfolderBase]: 2305/4386 cut-off events. [2025-03-17 14:15:28,969 INFO L125 PetriNetUnfolderBase]: For 24394/24396 co-relation queries the response was YES. [2025-03-17 14:15:28,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20229 conditions, 4386 events. 2305/4386 cut-off events. For 24394/24396 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30416 event pairs, 835 based on Foata normal form. 0/4372 useless extension candidates. Maximal degree in co-relation 16832. Up to 1990 conditions per place. [2025-03-17 14:15:28,987 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 136 selfloop transitions, 33 changer transitions 4/197 dead transitions. [2025-03-17 14:15:28,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 197 transitions, 2046 flow [2025-03-17 14:15:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2025-03-17 14:15:28,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40793650793650793 [2025-03-17 14:15:28,989 INFO L175 Difference]: Start difference. First operand has 142 places, 160 transitions, 1414 flow. Second operand 5 states and 257 transitions. [2025-03-17 14:15:28,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 197 transitions, 2046 flow [2025-03-17 14:15:29,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 197 transitions, 1994 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:29,035 INFO L231 Difference]: Finished difference. Result has 149 places, 174 transitions, 1614 flow [2025-03-17 14:15:29,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1614, PETRI_PLACES=149, PETRI_TRANSITIONS=174} [2025-03-17 14:15:29,035 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 33 predicate places. [2025-03-17 14:15:29,035 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 174 transitions, 1614 flow [2025-03-17 14:15:29,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 14:15:29,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:29,036 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 14:15:29,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:29,236 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 14:15:29,236 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 14:15:29,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 59947099, now seen corresponding path program 1 times [2025-03-17 14:15:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943242105] [2025-03-17 14:15:29,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:29,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:29,239 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 14:15:29,240 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 14:15:29,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 14:15:29,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 14:15:29,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:29,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:29,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:29,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:29,363 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 14:15:29,373 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 14:15:29,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:29,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:29,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943242105] [2025-03-17 14:15:29,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943242105] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:29,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:29,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258067805] [2025-03-17 14:15:29,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:29,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:29,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:29,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:29,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-03-17 14:15:29,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 174 transitions, 1614 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 14:15:29,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:29,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-03-17 14:15:29,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:29,880 INFO L124 PetriNetUnfolderBase]: 2144/4159 cut-off events. [2025-03-17 14:15:29,880 INFO L125 PetriNetUnfolderBase]: For 26176/26226 co-relation queries the response was YES. [2025-03-17 14:15:29,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21096 conditions, 4159 events. 2144/4159 cut-off events. For 26176/26226 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29452 event pairs, 990 based on Foata normal form. 7/4102 useless extension candidates. Maximal degree in co-relation 17978. Up to 3438 conditions per place. [2025-03-17 14:15:29,895 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 139 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2025-03-17 14:15:29,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 180 transitions, 1982 flow [2025-03-17 14:15:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2025-03-17 14:15:29,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5582010582010583 [2025-03-17 14:15:29,896 INFO L175 Difference]: Start difference. First operand has 149 places, 174 transitions, 1614 flow. Second operand 3 states and 211 transitions. [2025-03-17 14:15:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 180 transitions, 1982 flow [2025-03-17 14:15:29,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 180 transitions, 1885 flow, removed 28 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:29,939 INFO L231 Difference]: Finished difference. Result has 145 places, 172 transitions, 1531 flow [2025-03-17 14:15:29,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1531, PETRI_PLACES=145, PETRI_TRANSITIONS=172} [2025-03-17 14:15:29,940 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 29 predicate places. [2025-03-17 14:15:29,940 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 172 transitions, 1531 flow [2025-03-17 14:15:29,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 14:15:29,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:29,940 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 14:15:29,950 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 14:15:30,140 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 14:15:30,140 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 14:15:30,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 59947098, now seen corresponding path program 1 times [2025-03-17 14:15:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933149078] [2025-03-17 14:15:30,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:30,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:30,143 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 14:15:30,143 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 14:15:30,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 14:15:30,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 14:15:30,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:30,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:30,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:30,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:30,267 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 14:15:30,273 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 14:15:30,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:30,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:30,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933149078] [2025-03-17 14:15:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933149078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:30,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:30,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431609694] [2025-03-17 14:15:30,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:30,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:30,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:30,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:30,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 126 [2025-03-17 14:15:30,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 172 transitions, 1531 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 14:15:30,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:30,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 126 [2025-03-17 14:15:30,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:30,813 INFO L124 PetriNetUnfolderBase]: 2144/4152 cut-off events. [2025-03-17 14:15:30,813 INFO L125 PetriNetUnfolderBase]: For 22305/22337 co-relation queries the response was YES. [2025-03-17 14:15:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20389 conditions, 4152 events. 2144/4152 cut-off events. For 22305/22337 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29315 event pairs, 990 based on Foata normal form. 1/4089 useless extension candidates. Maximal degree in co-relation 19622. Up to 3438 conditions per place. [2025-03-17 14:15:30,832 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 139 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2025-03-17 14:15:30,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 178 transitions, 1891 flow [2025-03-17 14:15:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2025-03-17 14:15:30,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5582010582010583 [2025-03-17 14:15:30,833 INFO L175 Difference]: Start difference. First operand has 145 places, 172 transitions, 1531 flow. Second operand 3 states and 211 transitions. [2025-03-17 14:15:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 178 transitions, 1891 flow [2025-03-17 14:15:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 178 transitions, 1881 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:30,878 INFO L231 Difference]: Finished difference. Result has 143 places, 170 transitions, 1527 flow [2025-03-17 14:15:30,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1527, PETRI_PLACES=143, PETRI_TRANSITIONS=170} [2025-03-17 14:15:30,878 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 27 predicate places. [2025-03-17 14:15:30,878 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 170 transitions, 1527 flow [2025-03-17 14:15:30,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 14:15:30,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:30,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:30,888 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 14:15:31,079 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 14:15:31,079 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 14:15:31,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:31,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1387800056, now seen corresponding path program 1 times [2025-03-17 14:15:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:31,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075951830] [2025-03-17 14:15:31,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:31,082 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 14:15:31,083 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 14:15:31,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 14:15:31,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 14:15:31,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:31,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:31,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:31,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:31,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:31,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:31,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075951830] [2025-03-17 14:15:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075951830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:31,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703011016] [2025-03-17 14:15:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:31,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:31,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:31,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:31,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2025-03-17 14:15:31,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 170 transitions, 1527 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 14:15:31,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:31,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2025-03-17 14:15:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:31,456 INFO L124 PetriNetUnfolderBase]: 225/436 cut-off events. [2025-03-17 14:15:31,456 INFO L125 PetriNetUnfolderBase]: For 2736/2736 co-relation queries the response was YES. [2025-03-17 14:15:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 436 events. 225/436 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1487 event pairs, 31 based on Foata normal form. 36/471 useless extension candidates. Maximal degree in co-relation 2152. Up to 225 conditions per place. [2025-03-17 14:15:31,458 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 63 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2025-03-17 14:15:31,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 96 transitions, 855 flow [2025-03-17 14:15:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2025-03-17 14:15:31,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-03-17 14:15:31,458 INFO L175 Difference]: Start difference. First operand has 143 places, 170 transitions, 1527 flow. Second operand 4 states and 266 transitions. [2025-03-17 14:15:31,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 96 transitions, 855 flow [2025-03-17 14:15:31,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 543 flow, removed 51 selfloop flow, removed 40 redundant places. [2025-03-17 14:15:31,462 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 305 flow [2025-03-17 14:15:31,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-03-17 14:15:31,462 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2025-03-17 14:15:31,462 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 305 flow [2025-03-17 14:15:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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 14:15:31,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:31,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:31,472 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 14:15:31,663 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 14:15:31,663 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 14:15:31,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1560275730, now seen corresponding path program 1 times [2025-03-17 14:15:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:31,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506349819] [2025-03-17 14:15:31,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:31,668 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 14:15:31,669 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 14:15:31,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 14:15:31,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 14:15:31,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:31,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:31,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:31,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:31,858 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 14:15:31,858 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 14:15:31,891 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 14:15:31,893 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 14:15:31,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:31,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:31,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506349819] [2025-03-17 14:15:31,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506349819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:31,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:31,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991304393] [2025-03-17 14:15:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:31,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:31,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:31,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:31,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 126 [2025-03-17 14:15:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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 14:15:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 126 [2025-03-17 14:15:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:32,249 INFO L124 PetriNetUnfolderBase]: 225/435 cut-off events. [2025-03-17 14:15:32,249 INFO L125 PetriNetUnfolderBase]: For 973/973 co-relation queries the response was YES. [2025-03-17 14:15:32,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 435 events. 225/435 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1385 event pairs, 87 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 1539. Up to 187 conditions per place. [2025-03-17 14:15:32,251 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 58 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2025-03-17 14:15:32,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 543 flow [2025-03-17 14:15:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2025-03-17 14:15:32,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2025-03-17 14:15:32,252 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 305 flow. Second operand 5 states and 267 transitions. [2025-03-17 14:15:32,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 543 flow [2025-03-17 14:15:32,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 525 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:32,255 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 313 flow [2025-03-17 14:15:32,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2025-03-17 14:15:32,255 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -28 predicate places. [2025-03-17 14:15:32,255 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 313 flow [2025-03-17 14:15:32,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 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 14:15:32,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:32,256 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:32,266 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 14:15:32,456 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 14:15:32,456 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:32,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1408282109, now seen corresponding path program 1 times [2025-03-17 14:15:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:32,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473449696] [2025-03-17 14:15:32,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:32,459 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 14:15:32,459 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 14:15:32,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 14:15:32,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 14:15:32,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:32,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:32,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:15:32,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:32,628 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 14:15:32,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:32,787 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 14:15:32,795 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:32,795 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 14:15:32,811 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 14:15:32,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:32,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473449696] [2025-03-17 14:15:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473449696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:32,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987296387] [2025-03-17 14:15:32,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:32,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:32,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:32,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:32,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:32,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 126 [2025-03-17 14:15:32,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 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 14:15:32,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:32,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 126 [2025-03-17 14:15:32,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:33,047 INFO L124 PetriNetUnfolderBase]: 225/429 cut-off events. [2025-03-17 14:15:33,047 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2025-03-17 14:15:33,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 429 events. 225/429 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1381 event pairs, 87 based on Foata normal form. 3/432 useless extension candidates. Maximal degree in co-relation 1535. Up to 226 conditions per place. [2025-03-17 14:15:33,048 INFO L140 encePairwiseOnDemand]: 115/126 looper letters, 53 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2025-03-17 14:15:33,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 477 flow [2025-03-17 14:15:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:33,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2025-03-17 14:15:33,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38412698412698415 [2025-03-17 14:15:33,049 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 313 flow. Second operand 5 states and 242 transitions. [2025-03-17 14:15:33,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 477 flow [2025-03-17 14:15:33,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 449 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:33,052 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 295 flow [2025-03-17 14:15:33,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2025-03-17 14:15:33,052 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -34 predicate places. [2025-03-17 14:15:33,052 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 295 flow [2025-03-17 14:15:33,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 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 14:15:33,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:33,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:33,064 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 14:15:33,254 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 14:15:33,254 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 48 more)] === [2025-03-17 14:15:33,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:33,255 INFO L85 PathProgramCache]: Analyzing trace with hash -891263488, now seen corresponding path program 1 times [2025-03-17 14:15:33,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:33,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823359299] [2025-03-17 14:15:33,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:33,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:33,257 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 14:15:33,258 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 14:15:33,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 14:15:33,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 14:15:33,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:33,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:33,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 14:15:33,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:33,544 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:33,544 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:33,545 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 14:15:33,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:33,597 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 67 treesize of output 65 [2025-03-17 14:15:35,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:35,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 57 [2025-03-17 14:15:35,498 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 14:15:35,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:35,498 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823359299] [2025-03-17 14:15:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823359299] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:35,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 14:15:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581002996] [2025-03-17 14:15:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:35,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 14:15:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:35,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 14:15:35,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-03-17 14:15:37,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:39,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:41,104 WARN L539 Checker$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 14:15:43,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:45,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:47,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:49,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:51,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:53,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:55,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:15:58,023 WARN L539 Checker$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 14:16:00,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:02,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:04,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:07,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:09,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:11,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:14,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:16,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:18,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:20,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:23,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:25,544 WARN L539 Checker$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 14:16:27,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:30,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:32,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:32,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 126 [2025-03-17 14:16:32,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 295 flow. Second operand has 9 states, 9 states have (on average 26.666666666666668) internal successors, (240), 9 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:16:32,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:32,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 126 [2025-03-17 14:16:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:36,907 WARN L539 Checker$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 14:16:41,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 14:16:44,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]