./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-races/race-2_5-container_of.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-2_5-container_of.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 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:14:58,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:14:58,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:14:58,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:14:58,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:14:58,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:14:58,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:14:58,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:14:58,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:14:58,680 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:14:58,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:14:58,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:14:58,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:14:58,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:14:58,681 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:14:58,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:14:58,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:14:58,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:14:58,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/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 -> 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e [2025-03-17 14:14:58,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:14:58,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:14:58,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:14:58,898 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:14:58,898 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:14:58,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2025-03-17 14:14:59,990 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d2be3a7/bf8dd2435690427eb86f16c34eccd90e/FLAG2702d52ad [2025-03-17 14:15:00,304 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:00,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2025-03-17 14:15:00,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d2be3a7/bf8dd2435690427eb86f16c34eccd90e/FLAG2702d52ad [2025-03-17 14:15:00,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42d2be3a7/bf8dd2435690427eb86f16c34eccd90e [2025-03-17 14:15:00,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:00,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:00,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:00,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:00,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:00,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:00" (1/1) ... [2025-03-17 14:15:00,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fed067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:00, skipping insertion in model container [2025-03-17 14:15:00,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:00" (1/1) ... [2025-03-17 14:15:00,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:00,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:00,959 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:00,963 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:00,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:00,979 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 14:15:00,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37dab7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:00, skipping insertion in model container [2025-03-17 14:15:00,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:00,980 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 14:15:00,981 INFO L158 Benchmark]: Toolchain (without parser) took 400.11ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 114.4MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:00,981 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:15:00,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.56ms. Allocated memory is still 167.8MB. Free memory was 131.9MB in the beginning and 114.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:15:00,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.56ms. Allocated memory is still 167.8MB. Free memory was 131.9MB in the beginning and 114.4MB in the end (delta: 17.5MB). 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-2_5-container_of.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 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:15:02,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:15:02,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 14:15:02,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:15:02,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:15:02,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:15:02,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:15:02,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:15:02,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:15:02,778 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:15:02,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:15:02,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:15:02,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:15:02,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:15:02,779 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:15:02,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:15:02,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:15:02,781 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:15:02,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:02,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:15:02,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:15:02,782 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 -> 3c93f158b090fed5438343046820ebde54acd91fe2fe757fc7dc28475dc42a7e [2025-03-17 14:15:03,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:15:03,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:15:03,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:15:03,041 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:15:03,042 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:15:03,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2025-03-17 14:15:04,202 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39ddf926/3de500e4282748eca51b3330cd67dc9d/FLAG4aa5b601d [2025-03-17 14:15:04,478 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:15:04,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_5-container_of.i [2025-03-17 14:15:04,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39ddf926/3de500e4282748eca51b3330cd67dc9d/FLAG4aa5b601d [2025-03-17 14:15:04,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39ddf926/3de500e4282748eca51b3330cd67dc9d [2025-03-17 14:15:04,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:15:04,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:15:04,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:04,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:15:04,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:15:04,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:04" (1/1) ... [2025-03-17 14:15:04,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6835de5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:04, skipping insertion in model container [2025-03-17 14:15:04,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:15:04" (1/1) ... [2025-03-17 14:15:04,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:05,073 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,083 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,088 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:05,111 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 14:15:05,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:15:05,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,169 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 14:15:05,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:05,183 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:15:05,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:15:05,277 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:15:05,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05 WrapperNode [2025-03-17 14:15:05,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:15:05,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:05,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:15:05,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:15:05,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,319 INFO L138 Inliner]: procedures = 251, calls = 56, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 152 [2025-03-17 14:15:05,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:15:05,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:15:05,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:15:05,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:15:05,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,343 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 15, 2]. 79 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 10 writes are split as follows [0, 8, 2]. [2025-03-17 14:15:05,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,359 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:15:05,381 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:15:05,381 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:15:05,381 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:15:05,381 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (1/1) ... [2025-03-17 14:15:05,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:15:05,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:05,413 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 14:15:05,419 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 14:15:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-03-17 14:15:05,437 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 14:15:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 14:15:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:15:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 14:15:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 14:15:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:15:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 14:15:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 14:15:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 14:15:05,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:15:05,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:15:05,467 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 14:15:05,710 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:15:05,712 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:15:06,130 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:15:06,131 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:15:06,269 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:15:06,269 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:15:06,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:06 BoogieIcfgContainer [2025-03-17 14:15:06,270 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:15:06,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:15:06,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:15:06,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:15:06,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:15:04" (1/3) ... [2025-03-17 14:15:06,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3107b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:06, skipping insertion in model container [2025-03-17 14:15:06,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:15:05" (2/3) ... [2025-03-17 14:15:06,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3107b038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:15:06, skipping insertion in model container [2025-03-17 14:15:06,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:06" (3/3) ... [2025-03-17 14:15:06,276 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2025-03-17 14:15:06,287 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:15:06,288 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_5-container_of.i that has 2 procedures, 99 locations, 1 initial locations, 0 loop locations, and 41 error locations. [2025-03-17 14:15:06,288 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:15:06,352 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 14:15:06,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 124 transitions, 262 flow [2025-03-17 14:15:06,418 INFO L124 PetriNetUnfolderBase]: 14/157 cut-off events. [2025-03-17 14:15:06,420 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:15:06,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 14/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 500 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2025-03-17 14:15:06,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 124 transitions, 262 flow [2025-03-17 14:15:06,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 122 transitions, 256 flow [2025-03-17 14:15:06,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:15:06,439 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;@3a919bc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:15:06,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2025-03-17 14:15:06,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:15:06,446 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-17 14:15:06,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:15:06,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:06,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:06,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:06,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash 546197, now seen corresponding path program 1 times [2025-03-17 14:15:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886177036] [2025-03-17 14:15:06,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:06,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:06,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:06,474 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 14:15:06,475 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 14:15:06,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:06,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:06,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:06,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:06,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:15:06,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:06,623 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 14:15:06,636 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 14:15:06,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:06,637 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886177036] [2025-03-17 14:15:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886177036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:06,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:06,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618888226] [2025-03-17 14:15:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:06,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:06,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:06,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:06,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 124 [2025-03-17 14:15:06,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 14:15:06,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:06,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 124 [2025-03-17 14:15:06,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:07,925 INFO L124 PetriNetUnfolderBase]: 4045/10471 cut-off events. [2025-03-17 14:15:07,926 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-17 14:15:07,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16994 conditions, 10471 events. 4045/10471 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 110093 event pairs, 559 based on Foata normal form. 792/7960 useless extension candidates. Maximal degree in co-relation 15998. Up to 5491 conditions per place. [2025-03-17 14:15:07,991 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 93 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2025-03-17 14:15:07,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 470 flow [2025-03-17 14:15:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2025-03-17 14:15:08,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2025-03-17 14:15:08,006 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 256 flow. Second operand 3 states and 228 transitions. [2025-03-17 14:15:08,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 470 flow [2025-03-17 14:15:08,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 134 transitions, 462 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:08,017 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 224 flow [2025-03-17 14:15:08,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2025-03-17 14:15:08,022 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -8 predicate places. [2025-03-17 14:15:08,022 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 224 flow [2025-03-17 14:15:08,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:08,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:08,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:15:08,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 14:15:08,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:08,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:08,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 546198, now seen corresponding path program 1 times [2025-03-17 14:15:08,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916536822] [2025-03-17 14:15:08,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:08,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:08,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:15:08,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:15:08,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:15:08,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:08,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:08,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:08,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:08,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 14:15:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:08,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:08,356 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:08,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916536822] [2025-03-17 14:15:08,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916536822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:08,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234668816] [2025-03-17 14:15:08,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:08,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:08,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:08,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:08,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 124 [2025-03-17 14:15:08,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 124 [2025-03-17 14:15:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:09,238 INFO L124 PetriNetUnfolderBase]: 4045/10469 cut-off events. [2025-03-17 14:15:09,238 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2025-03-17 14:15:09,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 10469 events. 4045/10469 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 109794 event pairs, 559 based on Foata normal form. 1/7167 useless extension candidates. Maximal degree in co-relation 1994. Up to 5491 conditions per place. [2025-03-17 14:15:09,283 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 92 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2025-03-17 14:15:09,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 132 transitions, 460 flow [2025-03-17 14:15:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2025-03-17 14:15:09,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2025-03-17 14:15:09,285 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 224 flow. Second operand 3 states and 222 transitions. [2025-03-17 14:15:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 132 transitions, 460 flow [2025-03-17 14:15:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:09,288 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 220 flow [2025-03-17 14:15:09,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2025-03-17 14:15:09,289 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -10 predicate places. [2025-03-17 14:15:09,289 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 220 flow [2025-03-17 14:15:09,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 14:15:09,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:09,289 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-17 14:15:09,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:15:09,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,490 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:09,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash 16933530, now seen corresponding path program 1 times [2025-03-17 14:15:09,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:09,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307164747] [2025-03-17 14:15:09,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:09,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:09,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:09,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:15:09,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 14:15:09,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 14:15:09,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:09,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:09,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:09,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:09,588 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 14:15:09,588 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:09,588 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307164747] [2025-03-17 14:15:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307164747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945558805] [2025-03-17 14:15:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:09,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:09,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:09,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:09,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:09,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 124 [2025-03-17 14:15:09,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 14:15:09,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:09,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 124 [2025-03-17 14:15:09,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:10,301 INFO L124 PetriNetUnfolderBase]: 4044/7740 cut-off events. [2025-03-17 14:15:10,302 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2025-03-17 14:15:10,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14429 conditions, 7740 events. 4044/7740 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 61275 event pairs, 3679 based on Foata normal form. 1/5446 useless extension candidates. Maximal degree in co-relation 7142. Up to 5912 conditions per place. [2025-03-17 14:15:10,329 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 92 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2025-03-17 14:15:10,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 131 transitions, 458 flow [2025-03-17 14:15:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2025-03-17 14:15:10,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2025-03-17 14:15:10,332 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 220 flow. Second operand 3 states and 224 transitions. [2025-03-17 14:15:10,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 131 transitions, 458 flow [2025-03-17 14:15:10,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:10,334 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 218 flow [2025-03-17 14:15:10,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2025-03-17 14:15:10,335 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -10 predicate places. [2025-03-17 14:15:10,335 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 218 flow [2025-03-17 14:15:10,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 14:15:10,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:10,335 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:10,344 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 14:15:10,536 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 14:15:10,536 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:10,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1498511671, now seen corresponding path program 1 times [2025-03-17 14:15:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34663358] [2025-03-17 14:15:10,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:10,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:10,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:10,539 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 14:15:10,540 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 14:15:10,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:15:10,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:15:10,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:10,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:10,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:10,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:10,641 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 14:15:10,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:10,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34663358] [2025-03-17 14:15:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34663358] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627286889] [2025-03-17 14:15:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:10,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:10,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:10,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:10,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 124 [2025-03-17 14:15:10,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:10,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:10,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 124 [2025-03-17 14:15:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:11,508 INFO L124 PetriNetUnfolderBase]: 4772/10407 cut-off events. [2025-03-17 14:15:11,509 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2025-03-17 14:15:11,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18220 conditions, 10407 events. 4772/10407 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 97132 event pairs, 559 based on Foata normal form. 0/7951 useless extension candidates. Maximal degree in co-relation 16895. Up to 5488 conditions per place. [2025-03-17 14:15:11,540 INFO L140 encePairwiseOnDemand]: 114/124 looper letters, 119 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2025-03-17 14:15:11,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 152 transitions, 560 flow [2025-03-17 14:15:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2025-03-17 14:15:11,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5423387096774194 [2025-03-17 14:15:11,542 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 218 flow. Second operand 4 states and 269 transitions. [2025-03-17 14:15:11,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 152 transitions, 560 flow [2025-03-17 14:15:11,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 152 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:11,549 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 214 flow [2025-03-17 14:15:11,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2025-03-17 14:15:11,549 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -14 predicate places. [2025-03-17 14:15:11,549 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 214 flow [2025-03-17 14:15:11,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:11,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:11,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:11,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 14:15:11,755 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 14:15:11,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:11,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1498511672, now seen corresponding path program 1 times [2025-03-17 14:15:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638870782] [2025-03-17 14:15:11,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:11,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:11,759 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 14:15:11,760 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 14:15:11,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:15:11,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:15:11,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:11,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:11,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:11,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:11,850 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 14:15:11,890 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 14:15:11,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:11,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638870782] [2025-03-17 14:15:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638870782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:11,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:11,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101409603] [2025-03-17 14:15:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:11,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:11,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:11,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:11,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 124 [2025-03-17 14:15:11,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 14:15:11,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:11,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 124 [2025-03-17 14:15:11,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:12,531 INFO L124 PetriNetUnfolderBase]: 4044/7704 cut-off events. [2025-03-17 14:15:12,532 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2025-03-17 14:15:12,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14605 conditions, 7704 events. 4044/7704 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 60730 event pairs, 2743 based on Foata normal form. 361/5864 useless extension candidates. Maximal degree in co-relation 5595. Up to 4349 conditions per place. [2025-03-17 14:15:12,563 INFO L140 encePairwiseOnDemand]: 117/124 looper letters, 103 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2025-03-17 14:15:12,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 492 flow [2025-03-17 14:15:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2025-03-17 14:15:12,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2025-03-17 14:15:12,564 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 214 flow. Second operand 3 states and 224 transitions. [2025-03-17 14:15:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 492 flow [2025-03-17 14:15:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:12,571 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 225 flow [2025-03-17 14:15:12,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2025-03-17 14:15:12,572 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -14 predicate places. [2025-03-17 14:15:12,572 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 225 flow [2025-03-17 14:15:12,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 14:15:12,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:12,573 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:12,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 14:15:12,773 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 14:15:12,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:12,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash -684169304, now seen corresponding path program 1 times [2025-03-17 14:15:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:12,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410092146] [2025-03-17 14:15:12,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:12,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:12,780 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 14:15:12,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:15:12,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:15:12,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:15:12,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:12,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:12,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:15:12,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:12,883 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 14:15:12,919 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 14:15:12,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:12,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410092146] [2025-03-17 14:15:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410092146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:12,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689301490] [2025-03-17 14:15:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:12,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:12,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:12,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:13,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:13,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 225 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 14:15:13,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:13,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:13,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:14,017 INFO L124 PetriNetUnfolderBase]: 3561/7753 cut-off events. [2025-03-17 14:15:14,018 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2025-03-17 14:15:14,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14203 conditions, 7753 events. 3561/7753 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 67065 event pairs, 55 based on Foata normal form. 0/6046 useless extension candidates. Maximal degree in co-relation 8383. Up to 3303 conditions per place. [2025-03-17 14:15:14,044 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 166 selfloop transitions, 13 changer transitions 1/212 dead transitions. [2025-03-17 14:15:14,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 212 transitions, 820 flow [2025-03-17 14:15:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 539 transitions. [2025-03-17 14:15:14,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5433467741935484 [2025-03-17 14:15:14,046 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 225 flow. Second operand 8 states and 539 transitions. [2025-03-17 14:15:14,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 212 transitions, 820 flow [2025-03-17 14:15:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 212 transitions, 813 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:14,059 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 313 flow [2025-03-17 14:15:14,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2025-03-17 14:15:14,059 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2025-03-17 14:15:14,059 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 313 flow [2025-03-17 14:15:14,060 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 14:15:14,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:14,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:14,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 14:15:14,260 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 14:15:14,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:14,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash -684169303, now seen corresponding path program 1 times [2025-03-17 14:15:14,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:14,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672163279] [2025-03-17 14:15:14,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:14,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:14,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:14,265 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 14:15:14,266 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 14:15:14,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:15:14,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:15:14,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:14,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:14,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 14:15:14,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:14,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 14:15:14,443 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 14:15:14,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:14,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:14,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672163279] [2025-03-17 14:15:14,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672163279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:14,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529377835] [2025-03-17 14:15:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:14,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:14,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:14,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:14,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:14,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 313 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 14:15:14,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:14,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:14,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:15,298 INFO L124 PetriNetUnfolderBase]: 2665/5849 cut-off events. [2025-03-17 14:15:15,298 INFO L125 PetriNetUnfolderBase]: For 2190/2190 co-relation queries the response was YES. [2025-03-17 14:15:15,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11942 conditions, 5849 events. 2665/5849 cut-off events. For 2190/2190 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 47809 event pairs, 257 based on Foata normal form. 482/5436 useless extension candidates. Maximal degree in co-relation 10479. Up to 2812 conditions per place. [2025-03-17 14:15:15,315 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 148 selfloop transitions, 10 changer transitions 2/192 dead transitions. [2025-03-17 14:15:15,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 192 transitions, 817 flow [2025-03-17 14:15:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2025-03-17 14:15:15,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2025-03-17 14:15:15,316 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 313 flow. Second operand 7 states and 469 transitions. [2025-03-17 14:15:15,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 192 transitions, 817 flow [2025-03-17 14:15:15,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 192 transitions, 817 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:15,326 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 366 flow [2025-03-17 14:15:15,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2025-03-17 14:15:15,327 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 5 predicate places. [2025-03-17 14:15:15,327 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 366 flow [2025-03-17 14:15:15,327 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 14:15:15,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:15,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:15,336 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 14:15:15,532 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 14:15:15,532 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:15,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1546674687, now seen corresponding path program 1 times [2025-03-17 14:15:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:15,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989229469] [2025-03-17 14:15:15,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:15,535 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 14:15:15,536 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 14:15:15,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 14:15:15,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 14:15:15,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:15,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:15,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:15:15,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:15,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 14:15:15,649 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 14:15:15,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:15,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:15,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989229469] [2025-03-17 14:15:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989229469] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096933013] [2025-03-17 14:15:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:15,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:15,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:15,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:15,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:15,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 14:15:15,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:15,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:15,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:16,463 INFO L124 PetriNetUnfolderBase]: 2479/5327 cut-off events. [2025-03-17 14:15:16,463 INFO L125 PetriNetUnfolderBase]: For 3635/3635 co-relation queries the response was YES. [2025-03-17 14:15:16,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11840 conditions, 5327 events. 2479/5327 cut-off events. For 3635/3635 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 42156 event pairs, 191 based on Foata normal form. 0/4674 useless extension candidates. Maximal degree in co-relation 10602. Up to 1991 conditions per place. [2025-03-17 14:15:16,478 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 171 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2025-03-17 14:15:16,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 220 transitions, 1095 flow [2025-03-17 14:15:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:15:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:15:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 535 transitions. [2025-03-17 14:15:16,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5393145161290323 [2025-03-17 14:15:16,480 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 366 flow. Second operand 8 states and 535 transitions. [2025-03-17 14:15:16,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 220 transitions, 1095 flow [2025-03-17 14:15:16,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 220 transitions, 1065 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 14:15:16,488 INFO L231 Difference]: Finished difference. Result has 129 places, 121 transitions, 469 flow [2025-03-17 14:15:16,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=129, PETRI_TRANSITIONS=121} [2025-03-17 14:15:16,489 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 11 predicate places. [2025-03-17 14:15:16,489 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 121 transitions, 469 flow [2025-03-17 14:15:16,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 14:15:16,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:16,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:16,498 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 14:15:16,689 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 14:15:16,690 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:16,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1546674686, now seen corresponding path program 1 times [2025-03-17 14:15:16,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500537790] [2025-03-17 14:15:16,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:16,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:16,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:16,693 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 14:15:16,694 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 14:15:16,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 14:15:16,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 14:15:16,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:16,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:16,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 14:15:16,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:16,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 14:15:16,850 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 14:15:16,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:16,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:16,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500537790] [2025-03-17 14:15:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500537790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:16,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539508040] [2025-03-17 14:15:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:16,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:16,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:16,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:16,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 121 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 14:15:16,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:16,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:16,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:17,599 INFO L124 PetriNetUnfolderBase]: 1875/4083 cut-off events. [2025-03-17 14:15:17,599 INFO L125 PetriNetUnfolderBase]: For 4334/4336 co-relation queries the response was YES. [2025-03-17 14:15:17,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10159 conditions, 4083 events. 1875/4083 cut-off events. For 4334/4336 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 30735 event pairs, 384 based on Foata normal form. 354/4313 useless extension candidates. Maximal degree in co-relation 9145. Up to 2130 conditions per place. [2025-03-17 14:15:17,614 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 142 selfloop transitions, 14 changer transitions 1/189 dead transitions. [2025-03-17 14:15:17,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 189 transitions, 1017 flow [2025-03-17 14:15:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:15:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:15:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2025-03-17 14:15:17,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2025-03-17 14:15:17,616 INFO L175 Difference]: Start difference. First operand has 129 places, 121 transitions, 469 flow. Second operand 7 states and 452 transitions. [2025-03-17 14:15:17,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 189 transitions, 1017 flow [2025-03-17 14:15:17,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 189 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:15:17,624 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 540 flow [2025-03-17 14:15:17,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2025-03-17 14:15:17,625 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 19 predicate places. [2025-03-17 14:15:17,625 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 540 flow [2025-03-17 14:15:17,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 14:15:17,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:17,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:17,635 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 14:15:17,826 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 14:15:17,826 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:17,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1034358013, now seen corresponding path program 1 times [2025-03-17 14:15:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:17,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345636819] [2025-03-17 14:15:17,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:17,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:17,829 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 14:15:17,830 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 14:15:17,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:15:17,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:15:17,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:17,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:17,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:17,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:17,938 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,939 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,939 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2025-03-17 14:15:17,979 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,980 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,981 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:17,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:17,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2025-03-17 14:15:18,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:18,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2025-03-17 14:15:18,089 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 14:15:18,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:18,090 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345636819] [2025-03-17 14:15:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345636819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091429173] [2025-03-17 14:15:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:18,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:18,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:18,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:15:18,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 124 [2025-03-17 14:15:18,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 540 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 14:15:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 124 [2025-03-17 14:15:18,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:19,982 INFO L124 PetriNetUnfolderBase]: 2721/5207 cut-off events. [2025-03-17 14:15:19,982 INFO L125 PetriNetUnfolderBase]: For 8893/8897 co-relation queries the response was YES. [2025-03-17 14:15:19,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14429 conditions, 5207 events. 2721/5207 cut-off events. For 8893/8897 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 37406 event pairs, 1449 based on Foata normal form. 244/5302 useless extension candidates. Maximal degree in co-relation 12942. Up to 3599 conditions per place. [2025-03-17 14:15:19,997 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 135 selfloop transitions, 27 changer transitions 0/191 dead transitions. [2025-03-17 14:15:19,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 191 transitions, 1154 flow [2025-03-17 14:15:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:15:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:15:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2025-03-17 14:15:19,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-03-17 14:15:19,998 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 540 flow. Second operand 6 states and 384 transitions. [2025-03-17 14:15:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 191 transitions, 1154 flow [2025-03-17 14:15:20,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 191 transitions, 1129 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 14:15:20,011 INFO L231 Difference]: Finished difference. Result has 141 places, 151 transitions, 788 flow [2025-03-17 14:15:20,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=788, PETRI_PLACES=141, PETRI_TRANSITIONS=151} [2025-03-17 14:15:20,012 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 23 predicate places. [2025-03-17 14:15:20,012 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 151 transitions, 788 flow [2025-03-17 14:15:20,012 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 14:15:20,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:20,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:20,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:20,215 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 14:15:20,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:20,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash -621914784, now seen corresponding path program 1 times [2025-03-17 14:15:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259664904] [2025-03-17 14:15:20,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:20,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:20,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:20,218 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 14:15:20,220 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 14:15:20,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:20,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:20,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:20,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:20,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-17 14:15:20,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:20,330 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 14:15:20,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:20,444 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 14:15:20,452 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:20,452 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 14:15:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:20,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:20,467 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:20,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259664904] [2025-03-17 14:15:20,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259664904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:20,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:20,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:15:20,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776103349] [2025-03-17 14:15:20,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:15:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:20,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:15:20,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:15:20,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 124 [2025-03-17 14:15:20,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 151 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:20,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:20,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 124 [2025-03-17 14:15:20,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:21,797 INFO L124 PetriNetUnfolderBase]: 2816/5681 cut-off events. [2025-03-17 14:15:21,797 INFO L125 PetriNetUnfolderBase]: For 10244/10250 co-relation queries the response was YES. [2025-03-17 14:15:21,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17488 conditions, 5681 events. 2816/5681 cut-off events. For 10244/10250 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 43387 event pairs, 667 based on Foata normal form. 39/5596 useless extension candidates. Maximal degree in co-relation 15726. Up to 2354 conditions per place. [2025-03-17 14:15:21,825 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 192 selfloop transitions, 24 changer transitions 0/248 dead transitions. [2025-03-17 14:15:21,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 248 transitions, 1661 flow [2025-03-17 14:15:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2025-03-17 14:15:21,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.496415770609319 [2025-03-17 14:15:21,827 INFO L175 Difference]: Start difference. First operand has 141 places, 151 transitions, 788 flow. Second operand 9 states and 554 transitions. [2025-03-17 14:15:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 248 transitions, 1661 flow [2025-03-17 14:15:21,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 248 transitions, 1652 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:21,851 INFO L231 Difference]: Finished difference. Result has 145 places, 149 transitions, 827 flow [2025-03-17 14:15:21,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=827, PETRI_PLACES=145, PETRI_TRANSITIONS=149} [2025-03-17 14:15:21,852 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 27 predicate places. [2025-03-17 14:15:21,852 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 827 flow [2025-03-17 14:15:21,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:21,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:21,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:21,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:22,053 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 14:15:22,053 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 772416394, now seen corresponding path program 1 times [2025-03-17 14:15:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405157309] [2025-03-17 14:15:22,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:22,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:22,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:22,056 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 14:15:22,057 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 14:15:22,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:15:22,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:15:22,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:22,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:22,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 14:15:22,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:22,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 14:15:22,171 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 14:15:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:22,273 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 14:15:22,284 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:22,284 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 14:15:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:22,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:22,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:22,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405157309] [2025-03-17 14:15:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405157309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:22,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:15:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927924449] [2025-03-17 14:15:22,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:22,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:15:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:22,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:15:22,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:15:22,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:22,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 827 flow. Second operand has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 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 14:15:22,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:22,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:22,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:23,468 INFO L124 PetriNetUnfolderBase]: 3227/6439 cut-off events. [2025-03-17 14:15:23,469 INFO L125 PetriNetUnfolderBase]: For 13877/13881 co-relation queries the response was YES. [2025-03-17 14:15:23,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 6439 events. 3227/6439 cut-off events. For 13877/13881 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 50743 event pairs, 887 based on Foata normal form. 76/6424 useless extension candidates. Maximal degree in co-relation 17214. Up to 2200 conditions per place. [2025-03-17 14:15:23,498 INFO L140 encePairwiseOnDemand]: 112/124 looper letters, 209 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2025-03-17 14:15:23,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 266 transitions, 1808 flow [2025-03-17 14:15:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:15:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:15:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 577 transitions. [2025-03-17 14:15:23,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170250896057348 [2025-03-17 14:15:23,500 INFO L175 Difference]: Start difference. First operand has 145 places, 149 transitions, 827 flow. Second operand 9 states and 577 transitions. [2025-03-17 14:15:23,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 266 transitions, 1808 flow [2025-03-17 14:15:23,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 266 transitions, 1756 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-17 14:15:23,530 INFO L231 Difference]: Finished difference. Result has 143 places, 147 transitions, 831 flow [2025-03-17 14:15:23,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=143, PETRI_TRANSITIONS=147} [2025-03-17 14:15:23,531 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2025-03-17 14:15:23,531 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 147 transitions, 831 flow [2025-03-17 14:15:23,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 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 14:15:23,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:23,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:23,541 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 14:15:23,732 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 14:15:23,732 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:23,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 651383508, now seen corresponding path program 1 times [2025-03-17 14:15:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917449102] [2025-03-17 14:15:23,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:23,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:23,735 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 14:15:23,735 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 14:15:23,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 14:15:23,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 14:15:23,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:23,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:23,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:15:23,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:23,906 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_91| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_91|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_91| (_ bv0 1)) |c_#valid|))) is different from true [2025-03-17 14:15:23,912 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 14:15:23,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:23,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:23,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917449102] [2025-03-17 14:15:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917449102] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:23,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:23,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:23,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063197959] [2025-03-17 14:15:23,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:23,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:15:23,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:23,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:15:23,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2025-03-17 14:15:23,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 124 [2025-03-17 14:15:23,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 147 transitions, 831 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 14:15:23,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:23,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 124 [2025-03-17 14:15:23,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:24,709 INFO L124 PetriNetUnfolderBase]: 3518/6568 cut-off events. [2025-03-17 14:15:24,709 INFO L125 PetriNetUnfolderBase]: For 16144/16153 co-relation queries the response was YES. [2025-03-17 14:15:24,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21555 conditions, 6568 events. 3518/6568 cut-off events. For 16144/16153 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 48987 event pairs, 1452 based on Foata normal form. 1/6456 useless extension candidates. Maximal degree in co-relation 18580. Up to 2724 conditions per place. [2025-03-17 14:15:24,734 INFO L140 encePairwiseOnDemand]: 98/124 looper letters, 136 selfloop transitions, 37 changer transitions 4/196 dead transitions. [2025-03-17 14:15:24,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 196 transitions, 1416 flow [2025-03-17 14:15:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:15:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:15:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2025-03-17 14:15:24,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4080645161290323 [2025-03-17 14:15:24,735 INFO L175 Difference]: Start difference. First operand has 143 places, 147 transitions, 831 flow. Second operand 5 states and 253 transitions. [2025-03-17 14:15:24,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 196 transitions, 1416 flow [2025-03-17 14:15:24,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 196 transitions, 1381 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 14:15:24,761 INFO L231 Difference]: Finished difference. Result has 144 places, 165 transitions, 1083 flow [2025-03-17 14:15:24,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1083, PETRI_PLACES=144, PETRI_TRANSITIONS=165} [2025-03-17 14:15:24,761 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2025-03-17 14:15:24,761 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 165 transitions, 1083 flow [2025-03-17 14:15:24,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 14:15:24,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:24,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:24,771 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 14:15:24,962 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 14:15:24,962 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:24,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash -91896716, now seen corresponding path program 1 times [2025-03-17 14:15:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340836487] [2025-03-17 14:15:24,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:24,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:24,965 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 14:15:24,965 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 14:15:25,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:15:25,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:15:25,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:25,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:25,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:15:25,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:25,080 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 14:15:25,089 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 14:15:25,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:25,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340836487] [2025-03-17 14:15:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340836487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763571093] [2025-03-17 14:15:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:25,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:25,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:25,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:25,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:25,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 124 [2025-03-17 14:15:25,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 165 transitions, 1083 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:15:25,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:25,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 124 [2025-03-17 14:15:25,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:25,698 INFO L124 PetriNetUnfolderBase]: 3314/6270 cut-off events. [2025-03-17 14:15:25,699 INFO L125 PetriNetUnfolderBase]: For 18977/19016 co-relation queries the response was YES. [2025-03-17 14:15:25,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24392 conditions, 6270 events. 3314/6270 cut-off events. For 18977/19016 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 46937 event pairs, 1853 based on Foata normal form. 2/6113 useless extension candidates. Maximal degree in co-relation 21217. Up to 5174 conditions per place. [2025-03-17 14:15:25,725 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 139 selfloop transitions, 5 changer transitions 0/175 dead transitions. [2025-03-17 14:15:25,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 175 transitions, 1423 flow [2025-03-17 14:15:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2025-03-17 14:15:25,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5456989247311828 [2025-03-17 14:15:25,726 INFO L175 Difference]: Start difference. First operand has 144 places, 165 transitions, 1083 flow. Second operand 3 states and 203 transitions. [2025-03-17 14:15:25,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 175 transitions, 1423 flow [2025-03-17 14:15:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 175 transitions, 1342 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-17 14:15:25,760 INFO L231 Difference]: Finished difference. Result has 140 places, 163 transitions, 1008 flow [2025-03-17 14:15:25,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1008, PETRI_PLACES=140, PETRI_TRANSITIONS=163} [2025-03-17 14:15:25,760 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 22 predicate places. [2025-03-17 14:15:25,760 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 163 transitions, 1008 flow [2025-03-17 14:15:25,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:15:25,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:25,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:25,769 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 14:15:25,961 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 14:15:25,961 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:25,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -91896717, now seen corresponding path program 1 times [2025-03-17 14:15:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778926740] [2025-03-17 14:15:25,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:25,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:25,963 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 14:15:25,964 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 14:15:26,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:15:26,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:15:26,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:26,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:26,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:26,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:26,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 14:15:26,089 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 14:15:26,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:26,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778926740] [2025-03-17 14:15:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778926740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273555607] [2025-03-17 14:15:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:26,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:26,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:26,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:26,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 124 [2025-03-17 14:15:26,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 163 transitions, 1008 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:15:26,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:26,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 124 [2025-03-17 14:15:26,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:26,720 INFO L124 PetriNetUnfolderBase]: 3314/6261 cut-off events. [2025-03-17 14:15:26,720 INFO L125 PetriNetUnfolderBase]: For 17187/17250 co-relation queries the response was YES. [2025-03-17 14:15:26,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24013 conditions, 6261 events. 3314/6261 cut-off events. For 17187/17250 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46789 event pairs, 1853 based on Foata normal form. 10/6112 useless extension candidates. Maximal degree in co-relation 22625. Up to 5174 conditions per place. [2025-03-17 14:15:26,742 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 139 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2025-03-17 14:15:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 1348 flow [2025-03-17 14:15:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2025-03-17 14:15:26,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5456989247311828 [2025-03-17 14:15:26,743 INFO L175 Difference]: Start difference. First operand has 140 places, 163 transitions, 1008 flow. Second operand 3 states and 203 transitions. [2025-03-17 14:15:26,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 1348 flow [2025-03-17 14:15:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 173 transitions, 1338 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:26,774 INFO L231 Difference]: Finished difference. Result has 138 places, 161 transitions, 1004 flow [2025-03-17 14:15:26,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=138, PETRI_TRANSITIONS=161} [2025-03-17 14:15:26,774 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 20 predicate places. [2025-03-17 14:15:26,774 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 161 transitions, 1004 flow [2025-03-17 14:15:26,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 14:15:26,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:26,774 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] [2025-03-17 14:15:26,785 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 14:15:26,975 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 14:15:26,975 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:26,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:26,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1446169618, now seen corresponding path program 1 times [2025-03-17 14:15:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:26,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298075426] [2025-03-17 14:15:26,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:26,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:26,978 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 14:15:26,978 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 14:15:27,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 14:15:27,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 14:15:27,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:27,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:27,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:27,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:27,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 14:15:27,133 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 14:15:27,133 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 14:15:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:27,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:27,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298075426] [2025-03-17 14:15:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298075426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:27,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:27,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:27,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087289736] [2025-03-17 14:15:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:27,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:27,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:27,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:27,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:27,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 124 [2025-03-17 14:15:27,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 161 transitions, 1004 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 14:15:27,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:27,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 124 [2025-03-17 14:15:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:27,871 INFO L124 PetriNetUnfolderBase]: 3483/6500 cut-off events. [2025-03-17 14:15:27,871 INFO L125 PetriNetUnfolderBase]: For 17579/17612 co-relation queries the response was YES. [2025-03-17 14:15:27,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24861 conditions, 6500 events. 3483/6500 cut-off events. For 17579/17612 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 48170 event pairs, 1732 based on Foata normal form. 9/6440 useless extension candidates. Maximal degree in co-relation 23630. Up to 3095 conditions per place. [2025-03-17 14:15:27,902 INFO L140 encePairwiseOnDemand]: 115/124 looper letters, 136 selfloop transitions, 18 changer transitions 0/179 dead transitions. [2025-03-17 14:15:27,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 179 transitions, 1404 flow [2025-03-17 14:15:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-03-17 14:15:27,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2025-03-17 14:15:27,904 INFO L175 Difference]: Start difference. First operand has 138 places, 161 transitions, 1004 flow. Second operand 4 states and 236 transitions. [2025-03-17 14:15:27,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 179 transitions, 1404 flow [2025-03-17 14:15:27,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 179 transitions, 1394 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:27,941 INFO L231 Difference]: Finished difference. Result has 135 places, 157 transitions, 1022 flow [2025-03-17 14:15:27,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=135, PETRI_TRANSITIONS=157} [2025-03-17 14:15:27,942 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 17 predicate places. [2025-03-17 14:15:27,942 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 157 transitions, 1022 flow [2025-03-17 14:15:27,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 14:15:27,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:27,942 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] [2025-03-17 14:15:27,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 14:15:28,142 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 14:15:28,143 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1446169619, now seen corresponding path program 1 times [2025-03-17 14:15:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:28,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929197954] [2025-03-17 14:15:28,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:28,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:28,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:28,146 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 14:15:28,149 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 14:15:28,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 14:15:28,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 14:15:28,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:28,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:28,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:15:28,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:28,279 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 14:15:28,282 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 14:15:28,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:28,367 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 14:15:28,374 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 14:15:28,374 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 14:15:28,385 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 14:15:28,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:28,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929197954] [2025-03-17 14:15:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929197954] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:28,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:28,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:28,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468894187] [2025-03-17 14:15:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:28,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:28,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:28,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:28,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 124 [2025-03-17 14:15:28,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 157 transitions, 1022 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:28,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:28,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 124 [2025-03-17 14:15:28,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:29,167 INFO L124 PetriNetUnfolderBase]: 3258/6149 cut-off events. [2025-03-17 14:15:29,168 INFO L125 PetriNetUnfolderBase]: For 18854/18917 co-relation queries the response was YES. [2025-03-17 14:15:29,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23885 conditions, 6149 events. 3258/6149 cut-off events. For 18854/18917 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46045 event pairs, 1604 based on Foata normal form. 9/6062 useless extension candidates. Maximal degree in co-relation 20655. Up to 2987 conditions per place. [2025-03-17 14:15:29,193 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 140 selfloop transitions, 16 changer transitions 0/178 dead transitions. [2025-03-17 14:15:29,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 178 transitions, 1444 flow [2025-03-17 14:15:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2025-03-17 14:15:29,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2025-03-17 14:15:29,194 INFO L175 Difference]: Start difference. First operand has 135 places, 157 transitions, 1022 flow. Second operand 4 states and 224 transitions. [2025-03-17 14:15:29,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 178 transitions, 1444 flow [2025-03-17 14:15:29,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 178 transitions, 1408 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:29,230 INFO L231 Difference]: Finished difference. Result has 131 places, 153 transitions, 1010 flow [2025-03-17 14:15:29,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1010, PETRI_PLACES=131, PETRI_TRANSITIONS=153} [2025-03-17 14:15:29,230 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 13 predicate places. [2025-03-17 14:15:29,230 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 153 transitions, 1010 flow [2025-03-17 14:15:29,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:29,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:29,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:29,240 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 14:15:29,431 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 14:15:29,431 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:29,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1532341546, now seen corresponding path program 1 times [2025-03-17 14:15:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:29,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784677348] [2025-03-17 14:15:29,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:29,433 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 14:15:29,434 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 14:15:29,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 14:15:29,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 14:15:29,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:29,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:29,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:15:29,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:29,559 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 14:15:29,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:29,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784677348] [2025-03-17 14:15:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784677348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:15:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144076571] [2025-03-17 14:15:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:29,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:29,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:29,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:29,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:29,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 124 [2025-03-17 14:15:29,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 153 transitions, 1010 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:15:29,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:29,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 124 [2025-03-17 14:15:29,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:29,806 INFO L124 PetriNetUnfolderBase]: 455/835 cut-off events. [2025-03-17 14:15:29,806 INFO L125 PetriNetUnfolderBase]: For 1328/1328 co-relation queries the response was YES. [2025-03-17 14:15:29,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2939 conditions, 835 events. 455/835 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3507 event pairs, 63 based on Foata normal form. 64/881 useless extension candidates. Maximal degree in co-relation 2916. Up to 483 conditions per place. [2025-03-17 14:15:29,809 INFO L140 encePairwiseOnDemand]: 120/124 looper letters, 74 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-03-17 14:15:29,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 103 transitions, 621 flow [2025-03-17 14:15:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2025-03-17 14:15:29,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2025-03-17 14:15:29,810 INFO L175 Difference]: Start difference. First operand has 131 places, 153 transitions, 1010 flow. Second operand 4 states and 245 transitions. [2025-03-17 14:15:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 103 transitions, 621 flow [2025-03-17 14:15:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 103 transitions, 476 flow, removed 25 selfloop flow, removed 26 redundant places. [2025-03-17 14:15:29,814 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 234 flow [2025-03-17 14:15:29,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2025-03-17 14:15:29,815 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -29 predicate places. [2025-03-17 14:15:29,815 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 234 flow [2025-03-17 14:15:29,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:15:29,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:29,815 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 14:15:29,824 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 14:15:30,015 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 14:15:30,016 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:30,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1488314706, now seen corresponding path program 1 times [2025-03-17 14:15:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:30,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98966139] [2025-03-17 14:15:30,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:30,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:30,018 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 14:15:30,019 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 14:15:30,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 14:15:30,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 14:15:30,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:30,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:30,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:15:30,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:30,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,167 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:30,167 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:30,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 14:15:30,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:30,192 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:30,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 14:15:30,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 83 [2025-03-17 14:15:30,234 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 14:15:30,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:30,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:30,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98966139] [2025-03-17 14:15:30,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98966139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:30,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:30,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:15:30,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913277939] [2025-03-17 14:15:30,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:30,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:15:30,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:30,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:15:30,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:15:30,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 124 [2025-03-17 14:15:30,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:15:30,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:30,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 124 [2025-03-17 14:15:30,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:30,881 INFO L124 PetriNetUnfolderBase]: 476/893 cut-off events. [2025-03-17 14:15:30,881 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2025-03-17 14:15:30,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 893 events. 476/893 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3499 event pairs, 382 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 2474. Up to 778 conditions per place. [2025-03-17 14:15:30,883 INFO L140 encePairwiseOnDemand]: 116/124 looper letters, 70 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2025-03-17 14:15:30,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 463 flow [2025-03-17 14:15:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:15:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:15:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2025-03-17 14:15:30,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4717741935483871 [2025-03-17 14:15:30,885 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 234 flow. Second operand 4 states and 234 transitions. [2025-03-17 14:15:30,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 463 flow [2025-03-17 14:15:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:30,886 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 298 flow [2025-03-17 14:15:30,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2025-03-17 14:15:30,887 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -26 predicate places. [2025-03-17 14:15:30,887 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 298 flow [2025-03-17 14:15:30,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:15:30,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:30,887 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] [2025-03-17 14:15:30,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 14:15:31,087 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 14:15:31,087 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:31,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 269750932, now seen corresponding path program 1 times [2025-03-17 14:15:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:31,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239353886] [2025-03-17 14:15:31,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:31,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:31,091 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 14:15:31,092 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 14:15:31,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:15:31,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:15:31,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:31,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:31,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:15:31,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 14:15:31,237 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:31,237 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 14:15:31,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 14:15:31,262 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 14:15:31,262 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:31,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239353886] [2025-03-17 14:15:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239353886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:31,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:31,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:15:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640123108] [2025-03-17 14:15:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:31,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:15:31,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:31,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:15:31,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:15:31,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 124 [2025-03-17 14:15:31,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:31,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:31,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 124 [2025-03-17 14:15:31,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:31,613 INFO L124 PetriNetUnfolderBase]: 481/911 cut-off events. [2025-03-17 14:15:31,613 INFO L125 PetriNetUnfolderBase]: For 656/656 co-relation queries the response was YES. [2025-03-17 14:15:31,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 911 events. 481/911 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3618 event pairs, 395 based on Foata normal form. 13/920 useless extension candidates. Maximal degree in co-relation 2600. Up to 800 conditions per place. [2025-03-17 14:15:31,616 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 68 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2025-03-17 14:15:31,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 515 flow [2025-03-17 14:15:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:15:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:15:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2025-03-17 14:15:31,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2025-03-17 14:15:31,617 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 298 flow. Second operand 3 states and 183 transitions. [2025-03-17 14:15:31,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 515 flow [2025-03-17 14:15:31,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 505 flow, removed 5 selfloop flow, removed 0 redundant places. [2025-03-17 14:15:31,618 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 370 flow [2025-03-17 14:15:31,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2025-03-17 14:15:31,619 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -22 predicate places. [2025-03-17 14:15:31,619 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 370 flow [2025-03-17 14:15:31,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:31,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:31,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:31,629 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 14:15:31,819 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 14:15:31,819 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:31,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1384507712, now seen corresponding path program 1 times [2025-03-17 14:15:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:31,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115483654] [2025-03-17 14:15:31,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:15:31,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:31,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:31,822 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 14:15:31,823 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 14:15:31,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:15:31,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:31,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:15:31,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:31,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 14:15:31,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:31,972 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 14:15:32,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-17 14:15:32,109 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 14:15:32,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:32,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:32,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115483654] [2025-03-17 14:15:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115483654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:32,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 14:15:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825279722] [2025-03-17 14:15:32,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:32,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:15:32,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:32,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:15:32,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:15:32,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:32,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 370 flow. Second operand has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:32,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:32,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:32,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:33,251 INFO L124 PetriNetUnfolderBase]: 964/1699 cut-off events. [2025-03-17 14:15:33,251 INFO L125 PetriNetUnfolderBase]: For 1592/1592 co-relation queries the response was YES. [2025-03-17 14:15:33,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1699 events. 964/1699 cut-off events. For 1592/1592 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8392 event pairs, 140 based on Foata normal form. 12/1709 useless extension candidates. Maximal degree in co-relation 4893. Up to 650 conditions per place. [2025-03-17 14:15:33,256 INFO L140 encePairwiseOnDemand]: 113/124 looper letters, 130 selfloop transitions, 28 changer transitions 0/181 dead transitions. [2025-03-17 14:15:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 181 transitions, 1054 flow [2025-03-17 14:15:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:15:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:15:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2025-03-17 14:15:33,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-03-17 14:15:33,258 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 370 flow. Second operand 11 states and 620 transitions. [2025-03-17 14:15:33,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 181 transitions, 1054 flow [2025-03-17 14:15:33,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 181 transitions, 1032 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:33,264 INFO L231 Difference]: Finished difference. Result has 111 places, 111 transitions, 563 flow [2025-03-17 14:15:33,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=563, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2025-03-17 14:15:33,264 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -7 predicate places. [2025-03-17 14:15:33,264 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 563 flow [2025-03-17 14:15:33,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:33,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:33,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:33,275 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 14:15:33,464 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 14:15:33,465 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:33,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:33,465 INFO L85 PathProgramCache]: Analyzing trace with hash -724415684, now seen corresponding path program 2 times [2025-03-17 14:15:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101126654] [2025-03-17 14:15:33,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:15:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:33,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:33,468 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 14:15:33,468 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 14:15:33,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:15:33,617 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:33,617 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:15:33,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:33,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 14:15:33,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:33,628 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 14:15:33,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-17 14:15:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:15:33,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:33,731 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101126654] [2025-03-17 14:15:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101126654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:33,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 14:15:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897774285] [2025-03-17 14:15:33,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:33,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:15:33,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:33,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:15:33,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:15:34,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:34,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 563 flow. Second operand has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:34,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:34,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:34,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:34,876 INFO L124 PetriNetUnfolderBase]: 1048/1851 cut-off events. [2025-03-17 14:15:34,877 INFO L125 PetriNetUnfolderBase]: For 4381/4381 co-relation queries the response was YES. [2025-03-17 14:15:34,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1851 events. 1048/1851 cut-off events. For 4381/4381 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9378 event pairs, 50 based on Foata normal form. 12/1861 useless extension candidates. Maximal degree in co-relation 6741. Up to 494 conditions per place. [2025-03-17 14:15:34,884 INFO L140 encePairwiseOnDemand]: 113/124 looper letters, 134 selfloop transitions, 50 changer transitions 0/207 dead transitions. [2025-03-17 14:15:34,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 207 transitions, 1504 flow [2025-03-17 14:15:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:15:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:15:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 662 transitions. [2025-03-17 14:15:34,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44489247311827956 [2025-03-17 14:15:34,886 INFO L175 Difference]: Start difference. First operand has 111 places, 111 transitions, 563 flow. Second operand 12 states and 662 transitions. [2025-03-17 14:15:34,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 207 transitions, 1504 flow [2025-03-17 14:15:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 207 transitions, 1475 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-17 14:15:34,892 INFO L231 Difference]: Finished difference. Result has 123 places, 135 transitions, 877 flow [2025-03-17 14:15:34,892 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=877, PETRI_PLACES=123, PETRI_TRANSITIONS=135} [2025-03-17 14:15:34,892 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 5 predicate places. [2025-03-17 14:15:34,892 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 135 transitions, 877 flow [2025-03-17 14:15:34,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:34,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:34,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:34,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-17 14:15:35,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:35,093 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:35,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash 872931880, now seen corresponding path program 3 times [2025-03-17 14:15:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:35,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648313561] [2025-03-17 14:15:35,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:15:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:35,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:35,096 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:35,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-17 14:15:35,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:15:35,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:35,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:15:35,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:35,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 14:15:35,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:35,257 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 14:15:35,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-17 14:15:35,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-03-17 14:15:35,403 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 14:15:35,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:35,404 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:35,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648313561] [2025-03-17 14:15:35,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648313561] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:35,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:35,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 14:15:35,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968087929] [2025-03-17 14:15:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:35,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 14:15:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:35,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 14:15:35,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 14:15:35,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:35,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 135 transitions, 877 flow. Second operand has 9 states, 9 states have (on average 46.77777777777778) internal successors, (421), 9 states have internal predecessors, (421), 0 states have call successors, (0), 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 14:15:35,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:35,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:35,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:36,366 INFO L124 PetriNetUnfolderBase]: 968/1743 cut-off events. [2025-03-17 14:15:36,366 INFO L125 PetriNetUnfolderBase]: For 5632/5632 co-relation queries the response was YES. [2025-03-17 14:15:36,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1743 events. 968/1743 cut-off events. For 5632/5632 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8865 event pairs, 122 based on Foata normal form. 16/1757 useless extension candidates. Maximal degree in co-relation 7250. Up to 887 conditions per place. [2025-03-17 14:15:36,374 INFO L140 encePairwiseOnDemand]: 114/124 looper letters, 133 selfloop transitions, 40 changer transitions 0/196 dead transitions. [2025-03-17 14:15:36,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 196 transitions, 1624 flow [2025-03-17 14:15:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:15:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 14:15:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 550 transitions. [2025-03-17 14:15:36,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2025-03-17 14:15:36,376 INFO L175 Difference]: Start difference. First operand has 123 places, 135 transitions, 877 flow. Second operand 10 states and 550 transitions. [2025-03-17 14:15:36,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 196 transitions, 1624 flow [2025-03-17 14:15:36,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 196 transitions, 1511 flow, removed 17 selfloop flow, removed 6 redundant places. [2025-03-17 14:15:36,387 INFO L231 Difference]: Finished difference. Result has 132 places, 152 transitions, 1127 flow [2025-03-17 14:15:36,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1127, PETRI_PLACES=132, PETRI_TRANSITIONS=152} [2025-03-17 14:15:36,388 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2025-03-17 14:15:36,388 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 152 transitions, 1127 flow [2025-03-17 14:15:36,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.77777777777778) internal successors, (421), 9 states have internal predecessors, (421), 0 states have call successors, (0), 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 14:15:36,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:36,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:36,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-17 14:15:36,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:36,588 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:36,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1214611262, now seen corresponding path program 4 times [2025-03-17 14:15:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166745863] [2025-03-17 14:15:36,589 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:15:36,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:36,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:36,591 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:36,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-17 14:15:36,709 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-17 14:15:36,745 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:36,746 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:15:36,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:15:36,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 14:15:36,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:15:36,759 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 14:15:36,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-17 14:15:36,869 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 14:15:36,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:15:36,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:15:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166745863] [2025-03-17 14:15:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166745863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:15:36,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:15:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 14:15:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963021864] [2025-03-17 14:15:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:15:36,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:15:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:15:36,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:15:36,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:15:37,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 124 [2025-03-17 14:15:37,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 152 transitions, 1127 flow. Second operand has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:37,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:15:37,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 124 [2025-03-17 14:15:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:15:38,158 INFO L124 PetriNetUnfolderBase]: 1100/1980 cut-off events. [2025-03-17 14:15:38,158 INFO L125 PetriNetUnfolderBase]: For 7801/7801 co-relation queries the response was YES. [2025-03-17 14:15:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8756 conditions, 1980 events. 1100/1980 cut-off events. For 7801/7801 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10455 event pairs, 126 based on Foata normal form. 24/2000 useless extension candidates. Maximal degree in co-relation 8723. Up to 643 conditions per place. [2025-03-17 14:15:38,165 INFO L140 encePairwiseOnDemand]: 113/124 looper letters, 155 selfloop transitions, 62 changer transitions 0/240 dead transitions. [2025-03-17 14:15:38,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 240 transitions, 2201 flow [2025-03-17 14:15:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:15:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:15:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 670 transitions. [2025-03-17 14:15:38,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45026881720430106 [2025-03-17 14:15:38,166 INFO L175 Difference]: Start difference. First operand has 132 places, 152 transitions, 1127 flow. Second operand 12 states and 670 transitions. [2025-03-17 14:15:38,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 240 transitions, 2201 flow [2025-03-17 14:15:38,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 240 transitions, 2053 flow, removed 69 selfloop flow, removed 2 redundant places. [2025-03-17 14:15:38,181 INFO L231 Difference]: Finished difference. Result has 147 places, 168 transitions, 1440 flow [2025-03-17 14:15:38,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1440, PETRI_PLACES=147, PETRI_TRANSITIONS=168} [2025-03-17 14:15:38,182 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, 29 predicate places. [2025-03-17 14:15:38,182 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 168 transitions, 1440 flow [2025-03-17 14:15:38,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.125) internal successors, (377), 8 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:15:38,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:15:38,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:15:38,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-17 14:15:38,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:38,383 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 52 more)] === [2025-03-17 14:15:38,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:15:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -776604356, now seen corresponding path program 5 times [2025-03-17 14:15:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:15:38,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847047640] [2025-03-17 14:15:38,384 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:15:38,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:15:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:15:38,386 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:15:38,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-17 14:15:38,508 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:15:57,103 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:15:57,103 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:15:57,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:15:57,103 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 14:15:57,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:16:28,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:16:28,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:28,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:16:28,233 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-17 14:16:28,233 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 14:16:28,234 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (51 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2025-03-17 14:16:28,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (32 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (29 of 55 remaining) [2025-03-17 14:16:28,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (24 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (21 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (20 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2025-03-17 14:16:28,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2025-03-17 14:16:28,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2025-03-17 14:16:28,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-17 14:16:28,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:28,439 INFO L422 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:28,479 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:16:28,479 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:16:28,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:16:28 BasicIcfg [2025-03-17 14:16:28,483 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:16:28,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:16:28,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:16:28,484 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:16:28,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:15:06" (3/4) ... [2025-03-17 14:16:28,485 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 14:16:28,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:16:28,486 INFO L158 Benchmark]: Toolchain (without parser) took 83703.06ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 998.2MB). Free memory was 89.3MB in the beginning and 875.5MB in the end (delta: -786.2MB). Peak memory consumption was 218.2MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,486 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:28,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.85ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 47.4MB in the end (delta: 41.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.04ms. Allocated memory is still 117.4MB. Free memory was 47.4MB in the beginning and 45.0MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,486 INFO L158 Benchmark]: Boogie Preprocessor took 60.46ms. Allocated memory is still 117.4MB. Free memory was 45.0MB in the beginning and 40.7MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:16:28,486 INFO L158 Benchmark]: IcfgBuilder took 889.41ms. Allocated memory is still 117.4MB. Free memory was 40.7MB in the beginning and 66.0MB in the end (delta: -25.3MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,487 INFO L158 Benchmark]: TraceAbstraction took 82211.83ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 998.2MB). Free memory was 65.2MB in the beginning and 875.6MB in the end (delta: -810.4MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,487 INFO L158 Benchmark]: Witness Printer took 2.08ms. Allocated memory is still 1.1GB. Free memory was 875.6MB in the beginning and 875.5MB in the end (delta: 45.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:16:28,488 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.85ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 47.4MB in the end (delta: 41.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.04ms. Allocated memory is still 117.4MB. Free memory was 47.4MB in the beginning and 45.0MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.46ms. Allocated memory is still 117.4MB. Free memory was 45.0MB in the beginning and 40.7MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 889.41ms. Allocated memory is still 117.4MB. Free memory was 40.7MB in the beginning and 66.0MB in the end (delta: -25.3MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * TraceAbstraction took 82211.83ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 998.2MB). Free memory was 65.2MB in the beginning and 875.6MB in the end (delta: -810.4MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. * Witness Printer took 2.08ms. Allocated memory is still 1.1GB. Free memory was 875.6MB in the beginning and 875.5MB in the end (delta: 45.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 3883. Possible FailurePath: [L3888] 0 pthread_t t1,t2; [L3962] CALL, EXPR 0 my_drv_init() [L3956] 0 return 0; [L3962] RET, EXPR 0 my_drv_init() [L3962] 0 int ret = my_drv_init(); [L3963] COND TRUE 0 ret==0 [L3964] 0 int probe_ret; [L3965] 0 struct my_data data; [L3966] CALL, EXPR 0 my_drv_probe(&data) [L3919] 0 struct device *d = &data->dev; [L3923] 0 data->shared.a = 0 VAL [t1=0, t2=0] [L3924] 0 data->shared.b = 0 [L3925] 0 int res = __VERIFIER_nondet_int(); [L3926] COND FALSE 0 !(\read(res)) [L3929] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [\old(arg)={8390656:24}, \old(data)={8390656:0}, d={8390656:24}, data={8390656:0}, res=0, t1=134217727, t2=0] [L3902] 1 struct device *dev = (struct device*)arg; [L3903] 1 struct my_data *data; [L3904] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );}) [L3907] 1 data->shared.a = 1 VAL [\old(arg)={8390656:24}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, t1=134217727, t2=134217728] [L3910] EXPR 1 data->shared.b [L3910] 1 int lb = data->shared.b; [L3913] 1 data->shared.b = lb + 1 VAL [\old(arg)={8390656:24}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, lb=0, t1=134217727, t2=134217728] [L3916] 1 return 0; [L3930] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [\old(arg)={8390656:24}, \old(data)={8390656:0}, \result={0:0}, arg={8390656:24}, d={8390656:24}, data={8390656:0}, data={8390656:0}, dev={8390656:24}, lb=0, res=0, t1=134217727, t2=134217728] [L3931] 0 return 0; VAL [\old(arg)={8390656:24}, \old(data)={8390656:0}, \result=0, \result={0:0}, arg={8390656:24}, d={8390656:24}, data={8390656:0}, data={8390656:0}, dev={8390656:24}, lb=0, res=0, t1=134217727, t2=134217728] [L3902] 2 struct device *dev = (struct device*)arg; [L3903] 2 struct my_data *data; [L3904] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L3904] 2 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );}) [L3966] RET, EXPR 0 my_drv_probe(&data) [L3966] 0 probe_ret = my_drv_probe(&data) [L3967] COND TRUE 0 probe_ret==0 [L3968] CALL 0 my_drv_disconnect(&data) [L3937] 0 void *status; VAL [\old(arg)={8390656:24}, \old(data)={8390656:0}, \result={0:0}, arg={8390656:24}, data={8390656:0}, data={8390656:0}, dev={8390656:24}, lb=0, status={-2147483632:0}, t1=134217727, t2=134217728] [L3938] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\old(arg)={8390656:24}, \old(data)={8390656:0}, \result={0:0}, arg={8390656:24}, data={8390656:0}, data={8390656:0}, dev={8390656:24}, lb=0, status={-2147483632:0}, t1=134217727, t2=134217728] [L3941] 0 data->shared.a = 3 VAL [\old(arg)={8390656:24}, \result={0:0}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, lb=0, t1=134217727, t2=134217728] [L3944] 0 data->shared.b = 3 VAL [\old(arg)={8390656:24}, \result={0:0}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, lb=0, t1=134217727, t2=134217728] [L3907] 2 data->shared.a = 1 VAL [\old(arg)={8390656:24}, \result={0:0}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, lb=0, t1=134217727, t2=134217728] [L3947] EXPR 0 data->shared.a [L3947] CALL 0 ldv_assert(data->shared.a==3) [L3887] COND TRUE 0 !expression [L3887] CALL 0 reach_error() [L3883] 0 (0) ? (void) (0) : __assert_fail ("0", "../sv-benchmarks/c/ldv-races/race-2_5-container_of.c", 13, __extension__ __PRETTY_FUNCTION__) [L3883] 0 __assert_fail ("0", "../sv-benchmarks/c/ldv-races/race-2_5-container_of.c", 13, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={8390656:24}, \result={0:0}, arg={8390656:24}, data={8390656:0}, dev={8390656:24}, lb=0, t1=134217727, t2=134217728] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3961]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 3883]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 3929]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 3930]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 131 locations, 142 edges, 55 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 82.1s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3720 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3070 mSDsluCounter, 267 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8567 IncrementalHoareTripleChecker+Invalid, 8818 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 128 mSDtfsCounter, 8567 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 429 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1440occurred in iteration=24, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 19.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 379 ConstructedInterpolants, 2 QuantifiedInterpolants, 2732 SizeOfPredicates, 184 NumberOfNonLiveVariables, 3747 ConjunctsInSsa, 305 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 14:16:28,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample