./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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/libvsync/semaphore.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 c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:55:04,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:55:04,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:55:04,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:55:04,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:55:04,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:55:04,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:55:04,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:55:04,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:55:04,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:55:04,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:55:04,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:55:04,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:55:04,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:55:04,476 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:55:04,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:55:04,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:55:04,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:55:04,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:55:04,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:55:04,477 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:55:04,478 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:55:04,478 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:55:04,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:55:04,482 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:55:04,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:55:04,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:55:04,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:55:04,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:55:04,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:55:04,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:55:04,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:55:04,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:55:04,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:55:04,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:55:04,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:55:04,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:55:04,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:55:04,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:55:04,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:55:04,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:55:04,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:55:04,497 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c654263c1c366ef9cc67f02592c2d3fd912134a9cb5af429926a9f4627826820 [2024-11-22 21:55:04,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:55:04,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:55:04,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:55:04,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:55:04,741 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:55:04,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/semaphore.i [2024-11-22 21:55:05,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:55:06,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:55:06,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/semaphore.i [2024-11-22 21:55:06,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de7bdfb1/b15155876d624d1ea1d5ca8e782540d0/FLAGa59a331d7 [2024-11-22 21:55:06,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de7bdfb1/b15155876d624d1ea1d5ca8e782540d0 [2024-11-22 21:55:06,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:55:06,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:55:06,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:55:06,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:55:06,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:55:06,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:55:06" (1/1) ... [2024-11-22 21:55:06,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404f6d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:06, skipping insertion in model container [2024-11-22 21:55:06,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:55:06" (1/1) ... [2024-11-22 21:55:06,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:55:07,671 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:55:07,681 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:55:07,681 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:55:07,688 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:55:07,689 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:55:08,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:55:08,036 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:55:08,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2024-11-22 21:55:08,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2024-11-22 21:55:08,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2024-11-22 21:55:08,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2024-11-22 21:55:08,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2024-11-22 21:55:08,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2024-11-22 21:55:08,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2024-11-22 21:55:08,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2024-11-22 21:55:08,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2024-11-22 21:55:08,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2024-11-22 21:55:08,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2024-11-22 21:55:08,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2024-11-22 21:55:08,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2024-11-22 21:55:08,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2024-11-22 21:55:08,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2024-11-22 21:55:08,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2024-11-22 21:55:08,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2024-11-22 21:55:08,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2024-11-22 21:55:08,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2024-11-22 21:55:08,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2024-11-22 21:55:08,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2024-11-22 21:55:08,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2024-11-22 21:55:08,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2024-11-22 21:55:08,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2024-11-22 21:55:08,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2024-11-22 21:55:08,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2024-11-22 21:55:08,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2024-11-22 21:55:08,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2024-11-22 21:55:08,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2024-11-22 21:55:08,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2024-11-22 21:55:08,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2024-11-22 21:55:08,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2024-11-22 21:55:08,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2024-11-22 21:55:08,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2024-11-22 21:55:08,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2024-11-22 21:55:08,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2024-11-22 21:55:08,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2024-11-22 21:55:08,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2024-11-22 21:55:08,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2024-11-22 21:55:08,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2024-11-22 21:55:08,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2024-11-22 21:55:08,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2024-11-22 21:55:08,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2024-11-22 21:55:08,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2024-11-22 21:55:08,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2024-11-22 21:55:08,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2024-11-22 21:55:08,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2024-11-22 21:55:08,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2024-11-22 21:55:08,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2024-11-22 21:55:08,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2024-11-22 21:55:08,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2024-11-22 21:55:08,104 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2024-11-22 21:55:08,104 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2024-11-22 21:55:08,104 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2024-11-22 21:55:08,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2024-11-22 21:55:08,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2024-11-22 21:55:08,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2024-11-22 21:55:08,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2024-11-22 21:55:08,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2024-11-22 21:55:08,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2024-11-22 21:55:08,107 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2024-11-22 21:55:08,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2024-11-22 21:55:08,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2024-11-22 21:55:08,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2024-11-22 21:55:08,108 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2024-11-22 21:55:08,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2024-11-22 21:55:08,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2024-11-22 21:55:08,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2024-11-22 21:55:08,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2024-11-22 21:55:08,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2024-11-22 21:55:08,110 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2024-11-22 21:55:08,111 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2024-11-22 21:55:08,111 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2024-11-22 21:55:08,112 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2024-11-22 21:55:08,112 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2024-11-22 21:55:08,113 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2024-11-22 21:55:08,113 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2024-11-22 21:55:08,114 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2024-11-22 21:55:08,114 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2024-11-22 21:55:08,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2024-11-22 21:55:08,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2024-11-22 21:55:08,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2024-11-22 21:55:08,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2024-11-22 21:55:08,117 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2024-11-22 21:55:08,117 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2024-11-22 21:55:08,117 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2024-11-22 21:55:08,117 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2024-11-22 21:55:08,117 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2024-11-22 21:55:08,118 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2024-11-22 21:55:08,118 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2024-11-22 21:55:08,118 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2024-11-22 21:55:08,118 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2024-11-22 21:55:08,118 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2024-11-22 21:55:08,119 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2024-11-22 21:55:08,119 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2024-11-22 21:55:08,120 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2024-11-22 21:55:08,120 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2024-11-22 21:55:08,121 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2024-11-22 21:55:08,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2024-11-22 21:55:08,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2024-11-22 21:55:08,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:55:08,396 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:55:08,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08 WrapperNode [2024-11-22 21:55:08,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:55:08,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:55:08,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:55:08,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:55:08,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,513 INFO L138 Inliner]: procedures = 921, calls = 921, calls flagged for inlining = 820, calls inlined = 50, statements flattened = 529 [2024-11-22 21:55:08,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:55:08,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:55:08,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:55:08,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:55:08,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,544 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]. [2024-11-22 21:55:08,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:55:08,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:55:08,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:55:08,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:55:08,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (1/1) ... [2024-11-22 21:55:08,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:55:08,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:55:08,622 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) [2024-11-22 21:55:08,627 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 [2024-11-22 21:55:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-22 21:55:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:55:08,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 21:55:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-22 21:55:08,709 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-22 21:55:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:55:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:55:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:55:08,714 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:55:08,879 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:55:08,880 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:55:09,363 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:55:09,364 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:55:09,610 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:55:09,610 INFO L316 CfgBuilder]: Removed 97 assume(true) statements. [2024-11-22 21:55:09,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:55:09 BoogieIcfgContainer [2024-11-22 21:55:09,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:55:09,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:55:09,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:55:09,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:55:09,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:55:06" (1/3) ... [2024-11-22 21:55:09,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4109fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:55:09, skipping insertion in model container [2024-11-22 21:55:09,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:08" (2/3) ... [2024-11-22 21:55:09,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4109fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:55:09, skipping insertion in model container [2024-11-22 21:55:09,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:55:09" (3/3) ... [2024-11-22 21:55:09,617 INFO L112 eAbstractionObserver]: Analyzing ICFG semaphore.i [2024-11-22 21:55:09,632 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:55:09,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-11-22 21:55:09,632 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:55:09,737 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:55:09,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 280 transitions, 574 flow [2024-11-22 21:55:09,845 INFO L124 PetriNetUnfolderBase]: 175/538 cut-off events. [2024-11-22 21:55:09,845 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:55:09,856 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 33. Compared 2767 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. [2024-11-22 21:55:09,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 280 transitions, 574 flow [2024-11-22 21:55:09,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 280 transitions, 574 flow [2024-11-22 21:55:09,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:09,875 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;@2f6f1f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:09,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2024-11-22 21:55:09,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:09,877 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:55:09,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:55:09,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:09,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:55:09,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-22 21:55:09,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash 53401, now seen corresponding path program 1 times [2024-11-22 21:55:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:09,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376599042] [2024-11-22 21:55:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:10,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376599042] [2024-11-22 21:55:10,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376599042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:10,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:10,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:10,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417679315] [2024-11-22 21:55:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:10,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:10,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 280 [2024-11-22 21:55:10,186 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) [2024-11-22 21:55:10,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:10,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 280 [2024-11-22 21:55:10,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:14,980 INFO L124 PetriNetUnfolderBase]: 32942/59539 cut-off events. [2024-11-22 21:55:14,980 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-22 21:55:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108828 conditions, 59539 events. 32942/59539 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 554700 event pairs, 28964 based on Foata normal form. 32943/79213 useless extension candidates. Maximal degree in co-relation 106524. Up to 49130 conditions per place. [2024-11-22 21:55:15,293 INFO L140 encePairwiseOnDemand]: 186/280 looper letters, 103 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2024-11-22 21:55:15,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 185 transitions, 594 flow [2024-11-22 21:55:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2024-11-22 21:55:15,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202380952380953 [2024-11-22 21:55:15,312 INFO L175 Difference]: Start difference. First operand has 192 places, 280 transitions, 574 flow. Second operand 3 states and 437 transitions. [2024-11-22 21:55:15,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 185 transitions, 594 flow [2024-11-22 21:55:15,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:55:15,323 INFO L231 Difference]: Finished difference. Result has 182 places, 185 transitions, 388 flow [2024-11-22 21:55:15,324 INFO L260 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} [2024-11-22 21:55:15,327 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -10 predicate places. [2024-11-22 21:55:15,327 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 185 transitions, 388 flow [2024-11-22 21:55:15,327 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) [2024-11-22 21:55:15,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:15,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:55:15,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:55:15,328 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-22 21:55:15,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:15,328 INFO L85 PathProgramCache]: Analyzing trace with hash 53402, now seen corresponding path program 1 times [2024-11-22 21:55:15,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:15,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060206887] [2024-11-22 21:55:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:15,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060206887] [2024-11-22 21:55:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060206887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:15,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:15,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:15,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161421490] [2024-11-22 21:55:15,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:15,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:15,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:15,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 280 [2024-11-22 21:55:15,451 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) [2024-11-22 21:55:15,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:15,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 280 [2024-11-22 21:55:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:19,440 INFO L124 PetriNetUnfolderBase]: 32942/59538 cut-off events. [2024-11-22 21:55:19,440 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-22 21:55:19,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108829 conditions, 59538 events. 32942/59538 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1584. Compared 554900 event pairs, 28964 based on Foata normal form. 0/46270 useless extension candidates. Maximal degree in co-relation 108816. Up to 49130 conditions per place. [2024-11-22 21:55:19,758 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 102 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2024-11-22 21:55:19,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 184 transitions, 594 flow [2024-11-22 21:55:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-11-22 21:55:19,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-22 21:55:19,763 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 388 flow. Second operand 3 states and 345 transitions. [2024-11-22 21:55:19,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 184 transitions, 594 flow [2024-11-22 21:55:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:19,769 INFO L231 Difference]: Finished difference. Result has 181 places, 184 transitions, 386 flow [2024-11-22 21:55:19,771 INFO L260 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} [2024-11-22 21:55:19,771 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -11 predicate places. [2024-11-22 21:55:19,772 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 184 transitions, 386 flow [2024-11-22 21:55:19,772 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) [2024-11-22 21:55:19,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:19,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:19,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:55:19,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-22 21:55:19,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash 333476860, now seen corresponding path program 1 times [2024-11-22 21:55:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:19,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237314819] [2024-11-22 21:55:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:19,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237314819] [2024-11-22 21:55:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237314819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560663032] [2024-11-22 21:55:19,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:19,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:19,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:19,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 280 [2024-11-22 21:55:19,848 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) [2024-11-22 21:55:19,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:19,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 280 [2024-11-22 21:55:19,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:24,855 INFO L124 PetriNetUnfolderBase]: 39241/70337 cut-off events. [2024-11-22 21:55:24,855 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-22 21:55:24,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128887 conditions, 70337 events. 39241/70337 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 662612 event pairs, 28974 based on Foata normal form. 0/55194 useless extension candidates. Maximal degree in co-relation 128874. Up to 49067 conditions per place. [2024-11-22 21:55:25,195 INFO L140 encePairwiseOnDemand]: 275/280 looper letters, 184 selfloop transitions, 2 changer transitions 0/260 dead transitions. [2024-11-22 21:55:25,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 260 transitions, 910 flow [2024-11-22 21:55:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2024-11-22 21:55:25,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-11-22 21:55:25,199 INFO L175 Difference]: Start difference. First operand has 181 places, 184 transitions, 386 flow. Second operand 3 states and 411 transitions. [2024-11-22 21:55:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 260 transitions, 910 flow [2024-11-22 21:55:25,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 260 transitions, 906 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:25,209 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 380 flow [2024-11-22 21:55:25,209 INFO L260 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} [2024-11-22 21:55:25,210 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -14 predicate places. [2024-11-22 21:55:25,210 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 380 flow [2024-11-22 21:55:25,210 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) [2024-11-22 21:55:25,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:25,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:25,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:55:25,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-22 21:55:25,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash 333476861, now seen corresponding path program 1 times [2024-11-22 21:55:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:25,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219408029] [2024-11-22 21:55:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:25,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:25,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219408029] [2024-11-22 21:55:25,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219408029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:25,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:25,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:55:25,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010011969] [2024-11-22 21:55:25,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:25,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:25,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2024-11-22 21:55:25,353 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) [2024-11-22 21:55:25,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:25,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2024-11-22 21:55:25,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:29,560 INFO L124 PetriNetUnfolderBase]: 32837/59469 cut-off events. [2024-11-22 21:55:29,560 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2024-11-22 21:55:29,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109941 conditions, 59469 events. 32837/59469 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 553045 event pairs, 22945 based on Foata normal form. 37/46357 useless extension candidates. Maximal degree in co-relation 108228. Up to 39428 conditions per place. [2024-11-22 21:55:29,859 INFO L140 encePairwiseOnDemand]: 273/280 looper letters, 218 selfloop transitions, 5 changer transitions 0/299 dead transitions. [2024-11-22 21:55:29,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 299 transitions, 1062 flow [2024-11-22 21:55:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2024-11-22 21:55:29,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4830357142857143 [2024-11-22 21:55:29,861 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 380 flow. Second operand 4 states and 541 transitions. [2024-11-22 21:55:29,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 299 transitions, 1062 flow [2024-11-22 21:55:29,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 299 transitions, 1058 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:29,912 INFO L231 Difference]: Finished difference. Result has 180 places, 181 transitions, 398 flow [2024-11-22 21:55:29,912 INFO L260 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} [2024-11-22 21:55:29,913 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -12 predicate places. [2024-11-22 21:55:29,913 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 181 transitions, 398 flow [2024-11-22 21:55:29,913 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) [2024-11-22 21:55:29,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:29,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:55:29,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2024-11-22 21:55:29,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:29,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1244943757, now seen corresponding path program 1 times [2024-11-22 21:55:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768396014] [2024-11-22 21:55:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:29,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:55:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:29,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:55:29,983 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:55:29,983 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (62 of 63 remaining) [2024-11-22 21:55:29,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 63 remaining) [2024-11-22 21:55:29,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2024-11-22 21:55:29,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2024-11-22 21:55:29,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2024-11-22 21:55:29,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2024-11-22 21:55:29,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2024-11-22 21:55:29,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONMEMORY_LEAK (53 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2024-11-22 21:55:29,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2024-11-22 21:55:29,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (40 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (39 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (38 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2024-11-22 21:55:29,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2024-11-22 21:55:29,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2024-11-22 21:55:29,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2024-11-22 21:55:29,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2024-11-22 21:55:29,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2024-11-22 21:55:29,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2024-11-22 21:55:29,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 63 remaining) [2024-11-22 21:55:29,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 63 remaining) [2024-11-22 21:55:29,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 63 remaining) [2024-11-22 21:55:29,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2024-11-22 21:55:29,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2024-11-22 21:55:29,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2024-11-22 21:55:29,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2024-11-22 21:55:29,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2024-11-22 21:55:29,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2024-11-22 21:55:29,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2024-11-22 21:55:29,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2024-11-22 21:55:29,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2024-11-22 21:55:29,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2024-11-22 21:55:29,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2024-11-22 21:55:29,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2024-11-22 21:55:29,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location writerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2024-11-22 21:55:30,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:55:30,002 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 21:55:30,007 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:55:30,007 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 21:55:30,134 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:55:30,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 479 transitions, 990 flow [2024-11-22 21:55:30,515 INFO L124 PetriNetUnfolderBase]: 498/1525 cut-off events. [2024-11-22 21:55:30,516 INFO L125 PetriNetUnfolderBase]: For 40/48 co-relation queries the response was YES. [2024-11-22 21:55:30,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1525 events. 498/1525 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9615 event pairs, 1 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 930. Up to 48 conditions per place. [2024-11-22 21:55:30,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 479 transitions, 990 flow [2024-11-22 21:55:30,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 479 transitions, 990 flow [2024-11-22 21:55:30,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:30,571 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;@2f6f1f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:30,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-22 21:55:30,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:30,572 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-22 21:55:30,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:55:30,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:30,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-22 21:55:30,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, readerErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-22 21:55:30,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash 68697, now seen corresponding path program 1 times [2024-11-22 21:55:30,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:30,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251463893] [2024-11-22 21:55:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:30,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:30,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251463893] [2024-11-22 21:55:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251463893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:30,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:30,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061949095] [2024-11-22 21:55:30,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:30,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:30,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 479 [2024-11-22 21:55:30,623 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) [2024-11-22 21:55:30,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:30,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 479 [2024-11-22 21:55:30,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand