./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/libvsync/semaphore.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/libvsync/semaphore.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:04,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:04,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:16:04,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:04,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:04,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:04,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:04,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:04,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:04,789 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:04,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:04,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:04,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:04,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:04,789 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:04,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:04,792 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:04,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:04,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:04,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:04,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:04,793 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:04,794 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:04,795 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:04,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:04,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:04,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:04,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:04,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:04,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:16:04,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:04,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:04,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:04,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:04,797 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 [2025-01-10 01:16:05,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:05,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:05,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:05,102 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:05,102 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:05,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/semaphore.i [2025-01-10 01:16:06,439 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3957a270d/947fa9f4609f4cf082aef712e680dbf1/FLAG04314c385 [2025-01-10 01:16:07,063 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:07,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/libvsync/semaphore.i [2025-01-10 01:16:07,113 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3957a270d/947fa9f4609f4cf082aef712e680dbf1/FLAG04314c385 [2025-01-10 01:16:07,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3957a270d/947fa9f4609f4cf082aef712e680dbf1 [2025-01-10 01:16:07,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:07,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:07,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:07,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:07,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:07,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:07" (1/1) ... [2025-01-10 01:16:07,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:07, skipping insertion in model container [2025-01-10 01:16:07,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:07" (1/1) ... [2025-01-10 01:16:07,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:09,143 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:16:09,156 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:16:09,157 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:16:09,163 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:16:09,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:16:09,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:09,886 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:10,002 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2025-01-10 01:16:10,004 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2025-01-10 01:16:10,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2025-01-10 01:16:10,005 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2025-01-10 01:16:10,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2025-01-10 01:16:10,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2025-01-10 01:16:10,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2025-01-10 01:16:10,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2025-01-10 01:16:10,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2025-01-10 01:16:10,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2025-01-10 01:16:10,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2025-01-10 01:16:10,013 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2025-01-10 01:16:10,013 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2025-01-10 01:16:10,013 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2025-01-10 01:16:10,013 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2025-01-10 01:16:10,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2025-01-10 01:16:10,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2025-01-10 01:16:10,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2025-01-10 01:16:10,014 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2025-01-10 01:16:10,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2025-01-10 01:16:10,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2025-01-10 01:16:10,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2025-01-10 01:16:10,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2025-01-10 01:16:10,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2025-01-10 01:16:10,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2025-01-10 01:16:10,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2025-01-10 01:16:10,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2025-01-10 01:16:10,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2025-01-10 01:16:10,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2025-01-10 01:16:10,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2025-01-10 01:16:10,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2025-01-10 01:16:10,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2025-01-10 01:16:10,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2025-01-10 01:16:10,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2025-01-10 01:16:10,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2025-01-10 01:16:10,074 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2025-01-10 01:16:10,074 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2025-01-10 01:16:10,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2025-01-10 01:16:10,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2025-01-10 01:16:10,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2025-01-10 01:16:10,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2025-01-10 01:16:10,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2025-01-10 01:16:10,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2025-01-10 01:16:10,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2025-01-10 01:16:10,078 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2025-01-10 01:16:10,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2025-01-10 01:16:10,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2025-01-10 01:16:10,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2025-01-10 01:16:10,080 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2025-01-10 01:16:10,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2025-01-10 01:16:10,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2025-01-10 01:16:10,082 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2025-01-10 01:16:10,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2025-01-10 01:16:10,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2025-01-10 01:16:10,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2025-01-10 01:16:10,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2025-01-10 01:16:10,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2025-01-10 01:16:10,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2025-01-10 01:16:10,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2025-01-10 01:16:10,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2025-01-10 01:16:10,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2025-01-10 01:16:10,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2025-01-10 01:16:10,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2025-01-10 01:16:10,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2025-01-10 01:16:10,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2025-01-10 01:16:10,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2025-01-10 01:16:10,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2025-01-10 01:16:10,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2025-01-10 01:16:10,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2025-01-10 01:16:10,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2025-01-10 01:16:10,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2025-01-10 01:16:10,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2025-01-10 01:16:10,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2025-01-10 01:16:10,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2025-01-10 01:16:10,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2025-01-10 01:16:10,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2025-01-10 01:16:10,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2025-01-10 01:16:10,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2025-01-10 01:16:10,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2025-01-10 01:16:10,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2025-01-10 01:16:10,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2025-01-10 01:16:10,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2025-01-10 01:16:10,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2025-01-10 01:16:10,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2025-01-10 01:16:10,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2025-01-10 01:16:10,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2025-01-10 01:16:10,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2025-01-10 01:16:10,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2025-01-10 01:16:10,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2025-01-10 01:16:10,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2025-01-10 01:16:10,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2025-01-10 01:16:10,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2025-01-10 01:16:10,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2025-01-10 01:16:10,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2025-01-10 01:16:10,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2025-01-10 01:16:10,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2025-01-10 01:16:10,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2025-01-10 01:16:10,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2025-01-10 01:16:10,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2025-01-10 01:16:10,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2025-01-10 01:16:10,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:10,389 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:10,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10 WrapperNode [2025-01-10 01:16:10,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:10,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:10,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:10,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:10,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,505 INFO L138 Inliner]: procedures = 921, calls = 921, calls flagged for inlining = 820, calls inlined = 50, statements flattened = 466 [2025-01-10 01:16:10,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:10,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:10,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:10,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:10,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,552 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 14, 3]. 74 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 7 writes are split as follows [0, 5, 2]. [2025-01-10 01:16:10,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:10,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:10,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:10,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:10,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2025-01-10 01:16:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:10,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 01:16:10,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 01:16:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2025-01-10 01:16:10,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2025-01-10 01:16:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 01:16:10,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2025-01-10 01:16:10,668 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 01:16:10,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 01:16:10,670 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:16:10,864 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:10,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:11,595 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:11,595 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:11,930 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:11,930 INFO L312 CfgBuilder]: Removed 48 assume(true) statements. [2025-01-10 01:16:11,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:11 BoogieIcfgContainer [2025-01-10 01:16:11,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:11,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:11,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:11,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:11,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:07" (1/3) ... [2025-01-10 01:16:11,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:11, skipping insertion in model container [2025-01-10 01:16:11,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (2/3) ... [2025-01-10 01:16:11,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84b25c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:11, skipping insertion in model container [2025-01-10 01:16:11,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:11" (3/3) ... [2025-01-10 01:16:11,943 INFO L128 eAbstractionObserver]: Analyzing ICFG semaphore.i [2025-01-10 01:16:11,959 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:11,962 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG semaphore.i that has 3 procedures, 186 locations, 1 initial locations, 53 loop locations, and 36 error locations. [2025-01-10 01:16:11,962 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:12,135 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:16:12,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 280 transitions, 574 flow [2025-01-10 01:16:12,340 INFO L124 PetriNetUnfolderBase]: 175/538 cut-off events. [2025-01-10 01:16:12,342 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 01:16:12,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 538 events. 175/538 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2746 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 308. Up to 12 conditions per place. [2025-01-10 01:16:12,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 280 transitions, 574 flow [2025-01-10 01:16:12,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 280 transitions, 574 flow [2025-01-10 01:16:12,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:12,398 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;@41e1d1d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:12,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2025-01-10 01:16:12,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:12,403 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-01-10 01:16:12,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:12,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:12,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-01-10 01:16:12,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-01-10 01:16:12,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 54546, now seen corresponding path program 1 times [2025-01-10 01:16:12,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:12,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104055638] [2025-01-10 01:16:12,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:12,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:12,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-01-10 01:16:12,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-01-10 01:16:12,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:12,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104055638] [2025-01-10 01:16:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104055638] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:12,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140791621] [2025-01-10 01:16:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:12,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:12,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:12,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:12,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 280 [2025-01-10 01:16:12,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 280 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:12,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:12,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 280 [2025-01-10 01:16:12,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:18,428 INFO L124 PetriNetUnfolderBase]: 32942/59667 cut-off events. [2025-01-10 01:16:18,429 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-01-10 01:16:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108956 conditions, 59667 events. 32942/59667 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 557416 event pairs, 28964 based on Foata normal form. 32942/79182 useless extension candidates. Maximal degree in co-relation 106636. Up to 49130 conditions per place. [2025-01-10 01:16:18,830 INFO L140 encePairwiseOnDemand]: 186/280 looper letters, 103 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2025-01-10 01:16:18,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 185 transitions, 594 flow [2025-01-10 01:16:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2025-01-10 01:16:18,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5202380952380953 [2025-01-10 01:16:18,854 INFO L175 Difference]: Start difference. First operand has 192 places, 280 transitions, 574 flow. Second operand 3 states and 437 transitions. [2025-01-10 01:16:18,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 185 transitions, 594 flow [2025-01-10 01:16:18,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:16:18,875 INFO L231 Difference]: Finished difference. Result has 182 places, 185 transitions, 388 flow [2025-01-10 01:16:18,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=182, PETRI_TRANSITIONS=185} [2025-01-10 01:16:18,883 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, -10 predicate places. [2025-01-10 01:16:18,884 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 185 transitions, 388 flow [2025-01-10 01:16:18,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:18,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:18,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-01-10 01:16:18,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:16:18,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-01-10 01:16:18,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash 54547, now seen corresponding path program 1 times [2025-01-10 01:16:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634993920] [2025-01-10 01:16:18,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:18,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-01-10 01:16:18,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-01-10 01:16:18,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:18,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:19,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634993920] [2025-01-10 01:16:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634993920] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:19,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419292812] [2025-01-10 01:16:19,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:19,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:19,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:19,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:19,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:19,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 280 [2025-01-10 01:16:19,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 185 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:19,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:19,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 280 [2025-01-10 01:16:19,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:23,236 INFO L124 PetriNetUnfolderBase]: 32942/59666 cut-off events. [2025-01-10 01:16:23,237 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-01-10 01:16:23,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108957 conditions, 59666 events. 32942/59666 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 557625 event pairs, 28964 based on Foata normal form. 0/46240 useless extension candidates. Maximal degree in co-relation 108944. Up to 49130 conditions per place. [2025-01-10 01:16:23,574 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 102 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2025-01-10 01:16:23,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 184 transitions, 594 flow [2025-01-10 01:16:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2025-01-10 01:16:23,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2025-01-10 01:16:23,579 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 388 flow. Second operand 3 states and 345 transitions. [2025-01-10 01:16:23,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 184 transitions, 594 flow [2025-01-10 01:16:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:16:23,587 INFO L231 Difference]: Finished difference. Result has 181 places, 184 transitions, 386 flow [2025-01-10 01:16:23,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=181, PETRI_TRANSITIONS=184} [2025-01-10 01:16:23,588 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, -11 predicate places. [2025-01-10 01:16:23,589 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 184 transitions, 386 flow [2025-01-10 01:16:23,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:23,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:23,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:23,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:16:23,589 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-01-10 01:16:23,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 282390579, now seen corresponding path program 1 times [2025-01-10 01:16:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727084737] [2025-01-10 01:16:23,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:23,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 01:16:23,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:23,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:23,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:23,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727084737] [2025-01-10 01:16:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727084737] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:23,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:23,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107539102] [2025-01-10 01:16:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:23,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:23,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:23,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:23,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:23,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 280 [2025-01-10 01:16:23,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 184 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:23,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:23,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 280 [2025-01-10 01:16:23,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:28,610 INFO L124 PetriNetUnfolderBase]: 39241/70305 cut-off events. [2025-01-10 01:16:28,611 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2025-01-10 01:16:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128855 conditions, 70305 events. 39241/70305 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1859. Compared 662962 event pairs, 28974 based on Foata normal form. 0/55109 useless extension candidates. Maximal degree in co-relation 128842. Up to 49067 conditions per place. [2025-01-10 01:16:28,962 INFO L140 encePairwiseOnDemand]: 275/280 looper letters, 184 selfloop transitions, 2 changer transitions 0/260 dead transitions. [2025-01-10 01:16:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 260 transitions, 910 flow [2025-01-10 01:16:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2025-01-10 01:16:28,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2025-01-10 01:16:28,964 INFO L175 Difference]: Start difference. First operand has 181 places, 184 transitions, 386 flow. Second operand 3 states and 411 transitions. [2025-01-10 01:16:28,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 260 transitions, 910 flow [2025-01-10 01:16:28,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 260 transitions, 906 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:16:28,975 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 380 flow [2025-01-10 01:16:28,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2025-01-10 01:16:28,976 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, -14 predicate places. [2025-01-10 01:16:28,976 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 380 flow [2025-01-10 01:16:28,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:28,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:28,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:28,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 01:16:28,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-01-10 01:16:28,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 282390580, now seen corresponding path program 1 times [2025-01-10 01:16:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627653235] [2025-01-10 01:16:28,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:28,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 01:16:29,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:16:29,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:29,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:29,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627653235] [2025-01-10 01:16:29,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627653235] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:29,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:29,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:16:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378198071] [2025-01-10 01:16:29,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:29,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:16:29,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:29,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:16:29,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:16:29,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2025-01-10 01:16:29,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:29,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:29,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2025-01-10 01:16:29,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:33,230 INFO L124 PetriNetUnfolderBase]: 32837/59569 cut-off events. [2025-01-10 01:16:33,230 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2025-01-10 01:16:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110041 conditions, 59569 events. 32837/59569 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 555333 event pairs, 22945 based on Foata normal form. 37/46353 useless extension candidates. Maximal degree in co-relation 108328. Up to 39428 conditions per place. [2025-01-10 01:16:33,651 INFO L140 encePairwiseOnDemand]: 273/280 looper letters, 218 selfloop transitions, 5 changer transitions 0/299 dead transitions. [2025-01-10 01:16:33,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 299 transitions, 1062 flow [2025-01-10 01:16:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:16:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:16:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2025-01-10 01:16:33,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4830357142857143 [2025-01-10 01:16:33,654 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 380 flow. Second operand 4 states and 541 transitions. [2025-01-10 01:16:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 299 transitions, 1062 flow [2025-01-10 01:16:33,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 299 transitions, 1058 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:16:33,693 INFO L231 Difference]: Finished difference. Result has 180 places, 181 transitions, 398 flow [2025-01-10 01:16:33,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=180, PETRI_TRANSITIONS=181} [2025-01-10 01:16:33,694 INFO L279 CegarLoopForPetriNet]: 192 programPoint places, -12 predicate places. [2025-01-10 01:16:33,694 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 181 transitions, 398 flow [2025-01-10 01:16:33,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:33,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:33,694 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:33,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:16:33,694 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2025-01-10 01:16:33,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1436481461, now seen corresponding path program 1 times [2025-01-10 01:16:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:33,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626556607] [2025-01-10 01:16:33,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:33,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:16:33,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:16:33,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:33,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:33,725 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:33,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:16:33,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:16:33,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:33,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:33,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:16:33,779 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:33,783 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (62 of 63 remaining) [2025-01-10 01:16:33,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2025-01-10 01:16:33,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2025-01-10 01:16:33,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONMEMORY_LEAK (53 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2025-01-10 01:16:33,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (40 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (39 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (38 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2025-01-10 01:16:33,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2025-01-10 01:16:33,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2025-01-10 01:16:33,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2025-01-10 01:16:33,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 01:16:33,796 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-01-10 01:16:33,798 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 01:16:33,801 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 01:16:33,944 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 01:16:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 479 transitions, 990 flow [2025-01-10 01:16:34,155 INFO L124 PetriNetUnfolderBase]: 498/1525 cut-off events. [2025-01-10 01:16:34,156 INFO L125 PetriNetUnfolderBase]: For 40/47 co-relation queries the response was YES. [2025-01-10 01:16:34,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1525 events. 498/1525 cut-off events. For 40/47 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9609 event pairs, 1 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 930. Up to 48 conditions per place. [2025-01-10 01:16:34,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 479 transitions, 990 flow [2025-01-10 01:16:34,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 479 transitions, 990 flow [2025-01-10 01:16:34,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:34,241 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;@41e1d1d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:34,241 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2025-01-10 01:16:34,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:34,243 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-01-10 01:16:34,243 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:34,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:34,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2025-01-10 01:16:34,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2025-01-10 01:16:34,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash 69842, now seen corresponding path program 1 times [2025-01-10 01:16:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528965694] [2025-01-10 01:16:34,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:34,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-01-10 01:16:34,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-01-10 01:16:34,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:34,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528965694] [2025-01-10 01:16:34,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528965694] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:34,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:34,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483545922] [2025-01-10 01:16:34,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:34,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:34,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:34,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:34,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:34,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 479 [2025-01-10 01:16:34,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 479 transitions, 990 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:16:34,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:34,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 479 [2025-01-10 01:16:34,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand