./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/libvsync/clhlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/clhlock.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 bed480fb9329cf4d2bde4e192428cf2ff72174b29c5e6148c18915395bc76ca3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:43:48,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:43:48,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:43:48,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:43:48,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:43:48,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:43:48,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:43:48,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:43:48,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:43:48,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:43:48,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:43:48,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:43:48,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:43:48,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:43:48,279 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:43:48,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:43:48,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:43:48,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:43:48,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:43:48,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:43:48,280 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:43:48,284 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:43:48,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:43:48,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:43:48,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:43:48,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:43:48,285 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:43:48,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:43:48,286 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:43:48,286 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:43:48,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:43:48,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:43:48,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:43:48,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:43:48,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:43:48,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:43:48,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:43:48,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:43:48,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:43:48,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:43:48,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:43:48,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:43:48,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bed480fb9329cf4d2bde4e192428cf2ff72174b29c5e6148c18915395bc76ca3 [2024-11-17 03:43:48,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:43:48,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:43:48,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:43:48,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:43:48,593 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:43:48,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/clhlock.i [2024-11-17 03:43:50,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:43:50,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:43:50,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/libvsync/clhlock.i [2024-11-17 03:43:50,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32582eb8/56ef73b60412477ab86b9bba2d3088c5/FLAGbb71838ce [2024-11-17 03:43:50,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d32582eb8/56ef73b60412477ab86b9bba2d3088c5 [2024-11-17 03:43:50,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:43:50,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:43:50,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:43:50,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:43:50,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:43:50,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:43:50" (1/1) ... [2024-11-17 03:43:50,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d07cbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:50, skipping insertion in model container [2024-11-17 03:43:50,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:43:50" (1/1) ... [2024-11-17 03:43:50,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:43:52,479 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,493 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,493 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,502 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,503 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,706 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:52,716 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:43:53,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:43:53,023 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:43:53,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2024-11-17 03:43:53,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2024-11-17 03:43:53,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2024-11-17 03:43:53,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2024-11-17 03:43:53,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2024-11-17 03:43:53,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2024-11-17 03:43:53,167 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2024-11-17 03:43:53,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2024-11-17 03:43:53,168 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2024-11-17 03:43:53,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2024-11-17 03:43:53,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2024-11-17 03:43:53,169 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2024-11-17 03:43:53,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2024-11-17 03:43:53,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2024-11-17 03:43:53,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2024-11-17 03:43:53,172 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2024-11-17 03:43:53,172 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2024-11-17 03:43:53,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2024-11-17 03:43:53,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2024-11-17 03:43:53,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2024-11-17 03:43:53,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2024-11-17 03:43:53,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2024-11-17 03:43:53,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2024-11-17 03:43:53,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2024-11-17 03:43:53,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2024-11-17 03:43:53,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2024-11-17 03:43:53,176 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2024-11-17 03:43:53,177 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2024-11-17 03:43:53,177 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2024-11-17 03:43:53,178 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2024-11-17 03:43:53,178 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2024-11-17 03:43:53,179 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2024-11-17 03:43:53,179 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2024-11-17 03:43:53,179 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2024-11-17 03:43:53,180 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2024-11-17 03:43:53,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2024-11-17 03:43:53,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2024-11-17 03:43:53,182 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2024-11-17 03:43:53,182 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2024-11-17 03:43:53,183 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2024-11-17 03:43:53,183 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2024-11-17 03:43:53,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2024-11-17 03:43:53,184 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2024-11-17 03:43:53,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2024-11-17 03:43:53,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2024-11-17 03:43:53,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2024-11-17 03:43:53,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2024-11-17 03:43:53,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2024-11-17 03:43:53,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2024-11-17 03:43:53,188 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2024-11-17 03:43:53,188 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2024-11-17 03:43:53,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2024-11-17 03:43:53,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2024-11-17 03:43:53,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2024-11-17 03:43:53,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2024-11-17 03:43:53,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2024-11-17 03:43:53,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2024-11-17 03:43:53,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2024-11-17 03:43:53,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2024-11-17 03:43:53,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2024-11-17 03:43:53,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2024-11-17 03:43:53,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2024-11-17 03:43:53,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2024-11-17 03:43:53,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2024-11-17 03:43:53,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2024-11-17 03:43:53,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2024-11-17 03:43:53,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2024-11-17 03:43:53,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2024-11-17 03:43:53,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2024-11-17 03:43:53,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2024-11-17 03:43:53,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2024-11-17 03:43:53,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2024-11-17 03:43:53,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2024-11-17 03:43:53,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2024-11-17 03:43:53,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2024-11-17 03:43:53,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2024-11-17 03:43:53,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2024-11-17 03:43:53,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2024-11-17 03:43:53,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2024-11-17 03:43:53,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2024-11-17 03:43:53,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2024-11-17 03:43:53,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2024-11-17 03:43:53,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2024-11-17 03:43:53,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2024-11-17 03:43:53,202 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2024-11-17 03:43:53,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2024-11-17 03:43:53,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2024-11-17 03:43:53,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2024-11-17 03:43:53,206 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2024-11-17 03:43:53,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2024-11-17 03:43:53,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2024-11-17 03:43:53,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2024-11-17 03:43:53,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2024-11-17 03:43:53,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2024-11-17 03:43:53,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2024-11-17 03:43:53,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2024-11-17 03:43:53,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2024-11-17 03:43:53,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2024-11-17 03:43:53,211 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2024-11-17 03:43:53,212 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2024-11-17 03:43:53,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:43:53,597 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:43:53,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53 WrapperNode [2024-11-17 03:43:53,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:43:53,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:43:53,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:43:53,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:43:53,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,771 INFO L138 Inliner]: procedures = 919, calls = 937, calls flagged for inlining = 820, calls inlined = 37, statements flattened = 327 [2024-11-17 03:43:53,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:43:53,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:43:53,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:43:53,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:43:53,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,830 INFO L175 MemorySlicer]: Split 29 memory accesses to 4 slices as follows [2, 9, 16, 2]. 55 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 2, 9, 0]. The 8 writes are split as follows [0, 5, 2, 1]. [2024-11-17 03:43:53,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,856 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:43:53,877 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:43:53,878 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:43:53,878 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:43:53,879 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (1/1) ... [2024-11-17 03:43:53,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:43:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:53,916 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) [2024-11-17 03:43:53,919 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 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:43:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:43:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 03:43:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:43:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:43:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure run [2024-11-17 03:43:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2024-11-17 03:43:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:43:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:43:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:43:54,008 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:43:54,233 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:43:54,235 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:43:54,601 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2285: havoc vatomic32_await_eq_acq_#t~ret174#1; [2024-11-17 03:43:54,792 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6012-1: SUMMARY for call ULTIMATE.dealloc(main_~#t~0#1.base, main_~#t~0#1.offset); srcloc: null [2024-11-17 03:43:54,792 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6012: havoc main_~#t~0#1.base, main_~#t~0#1.offset; [2024-11-17 03:43:54,794 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:43:54,794 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:43:55,049 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:43:55,049 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:43:55,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:43:55 BoogieIcfgContainer [2024-11-17 03:43:55,050 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:43:55,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:43:55,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:43:55,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:43:55,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:43:50" (1/3) ... [2024-11-17 03:43:55,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71758f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:43:55, skipping insertion in model container [2024-11-17 03:43:55,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:43:53" (2/3) ... [2024-11-17 03:43:55,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71758f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:43:55, skipping insertion in model container [2024-11-17 03:43:55,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:43:55" (3/3) ... [2024-11-17 03:43:55,060 INFO L112 eAbstractionObserver]: Analyzing ICFG clhlock.i [2024-11-17 03:43:55,078 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:43:55,079 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2024-11-17 03:43:55,079 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:43:55,177 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:43:55,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 244 transitions, 495 flow [2024-11-17 03:43:55,344 INFO L124 PetriNetUnfolderBase]: 94/298 cut-off events. [2024-11-17 03:43:55,345 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:43:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 298 events. 94/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 946 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 200. Up to 6 conditions per place. [2024-11-17 03:43:55,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 244 transitions, 495 flow [2024-11-17 03:43:55,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 244 transitions, 495 flow [2024-11-17 03:43:55,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:43:55,385 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;@52dc9336, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:43:55,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-17 03:43:55,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:43:55,389 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-17 03:43:55,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:43:55,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:55,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:43:55,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:55,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:55,395 INFO L85 PathProgramCache]: Analyzing trace with hash 32656, now seen corresponding path program 1 times [2024-11-17 03:43:55,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:55,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477855094] [2024-11-17 03:43:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477855094] [2024-11-17 03:43:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477855094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718770653] [2024-11-17 03:43:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:55,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:55,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:55,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2024-11-17 03:43:55,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 244 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:43:55,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:55,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2024-11-17 03:43:55,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:56,327 INFO L124 PetriNetUnfolderBase]: 343/1280 cut-off events. [2024-11-17 03:43:56,327 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:56,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1280 events. 343/1280 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9348 event pairs, 296 based on Foata normal form. 982/2075 useless extension candidates. Maximal degree in co-relation 1896. Up to 702 conditions per place. [2024-11-17 03:43:56,337 INFO L140 encePairwiseOnDemand]: 168/244 looper letters, 63 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2024-11-17 03:43:56,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 168 transitions, 473 flow [2024-11-17 03:43:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2024-11-17 03:43:56,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2024-11-17 03:43:56,355 INFO L175 Difference]: Start difference. First operand has 169 places, 244 transitions, 495 flow. Second operand 3 states and 448 transitions. [2024-11-17 03:43:56,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 168 transitions, 473 flow [2024-11-17 03:43:56,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 168 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:43:56,365 INFO L231 Difference]: Finished difference. Result has 166 places, 168 transitions, 347 flow [2024-11-17 03:43:56,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=166, PETRI_TRANSITIONS=168} [2024-11-17 03:43:56,372 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -3 predicate places. [2024-11-17 03:43:56,373 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 168 transitions, 347 flow [2024-11-17 03:43:56,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:43:56,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:56,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:43:56,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:43:56,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:56,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash 32657, now seen corresponding path program 1 times [2024-11-17 03:43:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:56,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305237177] [2024-11-17 03:43:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:56,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:56,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305237177] [2024-11-17 03:43:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305237177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:56,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:56,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909797683] [2024-11-17 03:43:56,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:56,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:56,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2024-11-17 03:43:56,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 168 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:43:56,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:56,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2024-11-17 03:43:56,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:56,890 INFO L124 PetriNetUnfolderBase]: 343/1279 cut-off events. [2024-11-17 03:43:56,892 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:56,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 1279 events. 343/1279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9366 event pairs, 296 based on Foata normal form. 0/1093 useless extension candidates. Maximal degree in co-relation 1979. Up to 702 conditions per place. [2024-11-17 03:43:56,901 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 62 selfloop transitions, 2 changer transitions 0/167 dead transitions. [2024-11-17 03:43:56,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 473 flow [2024-11-17 03:43:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:56,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2024-11-17 03:43:56,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5109289617486339 [2024-11-17 03:43:56,906 INFO L175 Difference]: Start difference. First operand has 166 places, 168 transitions, 347 flow. Second operand 3 states and 374 transitions. [2024-11-17 03:43:56,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 473 flow [2024-11-17 03:43:56,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 167 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:56,912 INFO L231 Difference]: Finished difference. Result has 165 places, 167 transitions, 345 flow [2024-11-17 03:43:56,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=165, PETRI_TRANSITIONS=167} [2024-11-17 03:43:56,914 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -4 predicate places. [2024-11-17 03:43:56,914 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 167 transitions, 345 flow [2024-11-17 03:43:56,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-17 03:43:56,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:56,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:43:56,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:43:56,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:56,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 31410790, now seen corresponding path program 1 times [2024-11-17 03:43:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673200745] [2024-11-17 03:43:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673200745] [2024-11-17 03:43:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673200745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634051545] [2024-11-17 03:43:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:57,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:57,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:57,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:57,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2024-11-17 03:43:57,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 167 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2024-11-17 03:43:57,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:57,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2024-11-17 03:43:57,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:57,430 INFO L124 PetriNetUnfolderBase]: 343/1278 cut-off events. [2024-11-17 03:43:57,431 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1278 events. 343/1278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9374 event pairs, 296 based on Foata normal form. 0/1093 useless extension candidates. Maximal degree in co-relation 1977. Up to 698 conditions per place. [2024-11-17 03:43:57,438 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 60 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2024-11-17 03:43:57,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 166 transitions, 469 flow [2024-11-17 03:43:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2024-11-17 03:43:57,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48770491803278687 [2024-11-17 03:43:57,440 INFO L175 Difference]: Start difference. First operand has 165 places, 167 transitions, 345 flow. Second operand 4 states and 476 transitions. [2024-11-17 03:43:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 166 transitions, 469 flow [2024-11-17 03:43:57,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 166 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:57,446 INFO L231 Difference]: Finished difference. Result has 165 places, 166 transitions, 345 flow [2024-11-17 03:43:57,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=165, PETRI_TRANSITIONS=166} [2024-11-17 03:43:57,447 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -4 predicate places. [2024-11-17 03:43:57,448 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 166 transitions, 345 flow [2024-11-17 03:43:57,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2024-11-17 03:43:57,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:57,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:43:57,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:43:57,449 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:57,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash 31410791, now seen corresponding path program 1 times [2024-11-17 03:43:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:57,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784351509] [2024-11-17 03:43:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784351509] [2024-11-17 03:43:57,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784351509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:57,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:57,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:57,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561105204] [2024-11-17 03:43:57,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:57,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:57,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2024-11-17 03:43:57,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 166 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2024-11-17 03:43:57,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:57,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2024-11-17 03:43:57,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:58,054 INFO L124 PetriNetUnfolderBase]: 343/1277 cut-off events. [2024-11-17 03:43:58,054 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:58,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 1277 events. 343/1277 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9356 event pairs, 296 based on Foata normal form. 0/1093 useless extension candidates. Maximal degree in co-relation 1971. Up to 698 conditions per place. [2024-11-17 03:43:58,059 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 59 selfloop transitions, 3 changer transitions 0/165 dead transitions. [2024-11-17 03:43:58,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 165 transitions, 467 flow [2024-11-17 03:43:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2024-11-17 03:43:58,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48668032786885246 [2024-11-17 03:43:58,061 INFO L175 Difference]: Start difference. First operand has 165 places, 166 transitions, 345 flow. Second operand 4 states and 475 transitions. [2024-11-17 03:43:58,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 165 transitions, 467 flow [2024-11-17 03:43:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:58,067 INFO L231 Difference]: Finished difference. Result has 164 places, 165 transitions, 343 flow [2024-11-17 03:43:58,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=164, PETRI_TRANSITIONS=165} [2024-11-17 03:43:58,069 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -5 predicate places. [2024-11-17 03:43:58,069 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 165 transitions, 343 flow [2024-11-17 03:43:58,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2024-11-17 03:43:58,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:58,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:58,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:43:58,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:58,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -696558936, now seen corresponding path program 1 times [2024-11-17 03:43:58,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:58,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776196993] [2024-11-17 03:43:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:58,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:58,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776196993] [2024-11-17 03:43:58,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776196993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:58,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:58,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727935638] [2024-11-17 03:43:58,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:58,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:58,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:58,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 244 [2024-11-17 03:43:58,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 165 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:58,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:58,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 244 [2024-11-17 03:43:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:58,352 INFO L124 PetriNetUnfolderBase]: 343/1279 cut-off events. [2024-11-17 03:43:58,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 1279 events. 343/1279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9383 event pairs, 296 based on Foata normal form. 0/1094 useless extension candidates. Maximal degree in co-relation 1975. Up to 703 conditions per place. [2024-11-17 03:43:58,359 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 62 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2024-11-17 03:43:58,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 473 flow [2024-11-17 03:43:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-17 03:43:58,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068306010928961 [2024-11-17 03:43:58,361 INFO L175 Difference]: Start difference. First operand has 164 places, 165 transitions, 343 flow. Second operand 3 states and 371 transitions. [2024-11-17 03:43:58,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 473 flow [2024-11-17 03:43:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 166 transitions, 467 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:58,367 INFO L231 Difference]: Finished difference. Result has 164 places, 166 transitions, 349 flow [2024-11-17 03:43:58,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=164, PETRI_TRANSITIONS=166} [2024-11-17 03:43:58,368 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -5 predicate places. [2024-11-17 03:43:58,368 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 166 transitions, 349 flow [2024-11-17 03:43:58,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:58,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:58,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:58,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:43:58,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:58,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1096262534, now seen corresponding path program 1 times [2024-11-17 03:43:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250120311] [2024-11-17 03:43:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250120311] [2024-11-17 03:43:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250120311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:58,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112897960] [2024-11-17 03:43:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:58,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:58,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:58,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:58,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:43:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:58,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:43:58,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:58,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112897960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:58,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-17 03:43:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826773866] [2024-11-17 03:43:58,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:58,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:58,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 244 [2024-11-17 03:43:58,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 166 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 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) [2024-11-17 03:43:58,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:58,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 244 [2024-11-17 03:43:58,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:58,870 INFO L124 PetriNetUnfolderBase]: 343/1283 cut-off events. [2024-11-17 03:43:58,870 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-17 03:43:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 1283 events. 343/1283 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9335 event pairs, 296 based on Foata normal form. 0/1098 useless extension candidates. Maximal degree in co-relation 1974. Up to 703 conditions per place. [2024-11-17 03:43:58,876 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 62 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2024-11-17 03:43:58,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 489 flow [2024-11-17 03:43:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2024-11-17 03:43:58,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4737704918032787 [2024-11-17 03:43:58,879 INFO L175 Difference]: Start difference. First operand has 164 places, 166 transitions, 349 flow. Second operand 5 states and 578 transitions. [2024-11-17 03:43:58,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 489 flow [2024-11-17 03:43:58,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:58,882 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 373 flow [2024-11-17 03:43:58,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2024-11-17 03:43:58,883 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2024-11-17 03:43:58,883 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 373 flow [2024-11-17 03:43:58,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 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) [2024-11-17 03:43:58,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:58,884 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:58,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:59,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-17 03:43:59,085 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:59,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash 99997378, now seen corresponding path program 2 times [2024-11-17 03:43:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:59,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468277471] [2024-11-17 03:43:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 03:43:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468277471] [2024-11-17 03:43:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468277471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:59,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:59,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:43:59,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366116924] [2024-11-17 03:43:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:59,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:43:59,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 244 [2024-11-17 03:43:59,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-17 03:43:59,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:59,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 244 [2024-11-17 03:43:59,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:59,636 INFO L124 PetriNetUnfolderBase]: 426/1556 cut-off events. [2024-11-17 03:43:59,636 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-17 03:43:59,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 1556 events. 426/1556 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11359 event pairs, 217 based on Foata normal form. 0/1245 useless extension candidates. Maximal degree in co-relation 2396. Up to 495 conditions per place. [2024-11-17 03:43:59,642 INFO L140 encePairwiseOnDemand]: 237/244 looper letters, 147 selfloop transitions, 5 changer transitions 0/252 dead transitions. [2024-11-17 03:43:59,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 252 transitions, 845 flow [2024-11-17 03:43:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2024-11-17 03:43:59,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645491803278688 [2024-11-17 03:43:59,644 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 373 flow. Second operand 4 states and 551 transitions. [2024-11-17 03:43:59,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 252 transitions, 845 flow [2024-11-17 03:43:59,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 252 transitions, 839 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:59,650 INFO L231 Difference]: Finished difference. Result has 172 places, 168 transitions, 389 flow [2024-11-17 03:43:59,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=172, PETRI_TRANSITIONS=168} [2024-11-17 03:43:59,651 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 3 predicate places. [2024-11-17 03:43:59,652 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 168 transitions, 389 flow [2024-11-17 03:43:59,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2024-11-17 03:43:59,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:59,652 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:59,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:43:59,653 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:43:59,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash 99997377, now seen corresponding path program 1 times [2024-11-17 03:43:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:59,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637374765] [2024-11-17 03:43:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 03:43:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637374765] [2024-11-17 03:43:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637374765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093638530] [2024-11-17 03:43:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:59,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:59,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 244 [2024-11-17 03:43:59,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 168 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:59,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:59,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 244 [2024-11-17 03:43:59,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:00,042 INFO L124 PetriNetUnfolderBase]: 426/1483 cut-off events. [2024-11-17 03:44:00,043 INFO L125 PetriNetUnfolderBase]: For 312/338 co-relation queries the response was YES. [2024-11-17 03:44:00,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 1483 events. 426/1483 cut-off events. For 312/338 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11023 event pairs, 296 based on Foata normal form. 0/1225 useless extension candidates. Maximal degree in co-relation 2567. Up to 702 conditions per place. [2024-11-17 03:44:00,052 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 108 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2024-11-17 03:44:00,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 208 transitions, 689 flow [2024-11-17 03:44:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:44:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:44:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2024-11-17 03:44:00,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5532786885245902 [2024-11-17 03:44:00,054 INFO L175 Difference]: Start difference. First operand has 172 places, 168 transitions, 389 flow. Second operand 3 states and 405 transitions. [2024-11-17 03:44:00,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 208 transitions, 689 flow [2024-11-17 03:44:00,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 208 transitions, 684 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:44:00,058 INFO L231 Difference]: Finished difference. Result has 170 places, 166 transitions, 384 flow [2024-11-17 03:44:00,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=170, PETRI_TRANSITIONS=166} [2024-11-17 03:44:00,059 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 1 predicate places. [2024-11-17 03:44:00,059 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 166 transitions, 384 flow [2024-11-17 03:44:00,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:44:00,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:00,060 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:00,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:44:00,060 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-17 03:44:00,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash 149710840, now seen corresponding path program 1 times [2024-11-17 03:44:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:00,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961509593] [2024-11-17 03:44:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:00,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:44:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:00,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:44:00,152 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:44:00,153 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-11-17 03:44:00,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-11-17 03:44:00,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-11-17 03:44:00,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-11-17 03:44:00,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-11-17 03:44:00,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-11-17 03:44:00,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-11-17 03:44:00,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-11-17 03:44:00,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-11-17 03:44:00,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (50 of 60 remaining) [2024-11-17 03:44:00,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (49 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (48 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-11-17 03:44:00,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 60 remaining) [2024-11-17 03:44:00,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 60 remaining) [2024-11-17 03:44:00,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-11-17 03:44:00,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-11-17 03:44:00,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-11-17 03:44:00,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-11-17 03:44:00,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-11-17 03:44:00,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-11-17 03:44:00,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-11-17 03:44:00,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-11-17 03:44:00,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-11-17 03:44:00,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-11-17 03:44:00,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-11-17 03:44:00,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-11-17 03:44:00,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-11-17 03:44:00,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-11-17 03:44:00,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-11-17 03:44:00,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-11-17 03:44:00,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-11-17 03:44:00,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-11-17 03:44:00,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-11-17 03:44:00,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-11-17 03:44:00,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-11-17 03:44:00,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-11-17 03:44:00,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:44:00,168 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:00,170 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:44:00,171 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:44:00,271 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:44:00,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 391 transitions, 798 flow [2024-11-17 03:44:00,368 INFO L124 PetriNetUnfolderBase]: 168/537 cut-off events. [2024-11-17 03:44:00,368 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 03:44:00,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 537 events. 168/537 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2287 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 381. Up to 12 conditions per place. [2024-11-17 03:44:00,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 391 transitions, 798 flow [2024-11-17 03:44:00,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 391 transitions, 798 flow [2024-11-17 03:44:00,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:44:00,396 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;@52dc9336, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:44:00,396 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-17 03:44:00,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:44:00,400 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-17 03:44:00,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:44:00,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:00,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:44:00,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:00,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:00,402 INFO L85 PathProgramCache]: Analyzing trace with hash 45168, now seen corresponding path program 1 times [2024-11-17 03:44:00,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:00,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827671302] [2024-11-17 03:44:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:00,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:00,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827671302] [2024-11-17 03:44:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827671302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:00,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:00,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:44:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661103313] [2024-11-17 03:44:00,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:00,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:44:00,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:00,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:44:00,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:44:00,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 391 [2024-11-17 03:44:00,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 391 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2024-11-17 03:44:00,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:00,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 391 [2024-11-17 03:44:00,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:07,511 INFO L124 PetriNetUnfolderBase]: 27998/60718 cut-off events. [2024-11-17 03:44:07,512 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-17 03:44:07,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102537 conditions, 60718 events. 27998/60718 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 702195 event pairs, 24457 based on Foata normal form. 50143/99428 useless extension candidates. Maximal degree in co-relation 58275. Up to 41619 conditions per place. [2024-11-17 03:44:07,886 INFO L140 encePairwiseOnDemand]: 271/391 looper letters, 107 selfloop transitions, 2 changer transitions 0/271 dead transitions. [2024-11-17 03:44:07,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 271 transitions, 776 flow [2024-11-17 03:44:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:44:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:44:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2024-11-17 03:44:07,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-11-17 03:44:07,890 INFO L175 Difference]: Start difference. First operand has 270 places, 391 transitions, 798 flow. Second operand 3 states and 713 transitions. [2024-11-17 03:44:07,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 271 transitions, 776 flow [2024-11-17 03:44:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 776 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:44:07,897 INFO L231 Difference]: Finished difference. Result has 265 places, 271 transitions, 562 flow [2024-11-17 03:44:07,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=265, PETRI_TRANSITIONS=271} [2024-11-17 03:44:07,899 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -5 predicate places. [2024-11-17 03:44:07,900 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 271 transitions, 562 flow [2024-11-17 03:44:07,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2024-11-17 03:44:07,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:07,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:44:07,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:44:07,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:07,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 45169, now seen corresponding path program 1 times [2024-11-17 03:44:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:07,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110394051] [2024-11-17 03:44:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110394051] [2024-11-17 03:44:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110394051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:08,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:44:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362942165] [2024-11-17 03:44:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:08,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:44:08,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:44:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:44:08,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 391 [2024-11-17 03:44:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 271 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2024-11-17 03:44:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:08,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 391 [2024-11-17 03:44:08,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:13,827 INFO L124 PetriNetUnfolderBase]: 27998/60717 cut-off events. [2024-11-17 03:44:13,827 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-17 03:44:13,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102538 conditions, 60717 events. 27998/60717 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 702068 event pairs, 24457 based on Foata normal form. 0/49285 useless extension candidates. Maximal degree in co-relation 102525. Up to 41619 conditions per place. [2024-11-17 03:44:14,173 INFO L140 encePairwiseOnDemand]: 388/391 looper letters, 106 selfloop transitions, 2 changer transitions 0/270 dead transitions. [2024-11-17 03:44:14,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 270 transitions, 776 flow [2024-11-17 03:44:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:44:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:44:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2024-11-17 03:44:14,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-17 03:44:14,176 INFO L175 Difference]: Start difference. First operand has 265 places, 271 transitions, 562 flow. Second operand 3 states and 595 transitions. [2024-11-17 03:44:14,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 270 transitions, 776 flow [2024-11-17 03:44:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 270 transitions, 772 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:44:14,181 INFO L231 Difference]: Finished difference. Result has 264 places, 270 transitions, 560 flow [2024-11-17 03:44:14,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=264, PETRI_TRANSITIONS=270} [2024-11-17 03:44:14,182 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -6 predicate places. [2024-11-17 03:44:14,182 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 270 transitions, 560 flow [2024-11-17 03:44:14,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2024-11-17 03:44:14,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:14,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:44:14,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:44:14,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:14,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 43447334, now seen corresponding path program 1 times [2024-11-17 03:44:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607358084] [2024-11-17 03:44:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:14,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607358084] [2024-11-17 03:44:14,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607358084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:14,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:14,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:44:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946871188] [2024-11-17 03:44:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:14,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:44:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:14,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:44:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:44:14,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 391 [2024-11-17 03:44:14,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 270 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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) [2024-11-17 03:44:14,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:14,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 391 [2024-11-17 03:44:14,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:20,173 INFO L124 PetriNetUnfolderBase]: 27998/60716 cut-off events. [2024-11-17 03:44:20,173 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-17 03:44:20,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102536 conditions, 60716 events. 27998/60716 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 701930 event pairs, 24457 based on Foata normal form. 0/49285 useless extension candidates. Maximal degree in co-relation 102523. Up to 41615 conditions per place. [2024-11-17 03:44:20,484 INFO L140 encePairwiseOnDemand]: 387/391 looper letters, 104 selfloop transitions, 3 changer transitions 0/269 dead transitions. [2024-11-17 03:44:20,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 269 transitions, 772 flow [2024-11-17 03:44:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:44:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:44:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 756 transitions. [2024-11-17 03:44:20,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4833759590792839 [2024-11-17 03:44:20,487 INFO L175 Difference]: Start difference. First operand has 264 places, 270 transitions, 560 flow. Second operand 4 states and 756 transitions. [2024-11-17 03:44:20,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 269 transitions, 772 flow [2024-11-17 03:44:20,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:44:20,492 INFO L231 Difference]: Finished difference. Result has 264 places, 269 transitions, 560 flow [2024-11-17 03:44:20,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=264, PETRI_TRANSITIONS=269} [2024-11-17 03:44:20,493 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -6 predicate places. [2024-11-17 03:44:20,493 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 269 transitions, 560 flow [2024-11-17 03:44:20,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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) [2024-11-17 03:44:20,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:20,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:44:20,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:44:20,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:20,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 43447335, now seen corresponding path program 1 times [2024-11-17 03:44:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:20,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793885296] [2024-11-17 03:44:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:20,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:20,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793885296] [2024-11-17 03:44:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793885296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:20,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:44:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322242550] [2024-11-17 03:44:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:20,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:44:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:44:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:44:20,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 391 [2024-11-17 03:44:20,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 269 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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) [2024-11-17 03:44:20,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:20,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 391 [2024-11-17 03:44:20,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:26,490 INFO L124 PetriNetUnfolderBase]: 27998/60715 cut-off events. [2024-11-17 03:44:26,490 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-17 03:44:26,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102535 conditions, 60715 events. 27998/60715 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 702264 event pairs, 24457 based on Foata normal form. 0/49285 useless extension candidates. Maximal degree in co-relation 102517. Up to 41615 conditions per place. [2024-11-17 03:44:26,807 INFO L140 encePairwiseOnDemand]: 387/391 looper letters, 103 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2024-11-17 03:44:26,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 268 transitions, 770 flow [2024-11-17 03:44:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:44:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:44:26,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 755 transitions. [2024-11-17 03:44:26,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4827365728900256 [2024-11-17 03:44:26,811 INFO L175 Difference]: Start difference. First operand has 264 places, 269 transitions, 560 flow. Second operand 4 states and 755 transitions. [2024-11-17 03:44:26,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 268 transitions, 770 flow [2024-11-17 03:44:26,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 268 transitions, 764 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:44:26,817 INFO L231 Difference]: Finished difference. Result has 263 places, 268 transitions, 558 flow [2024-11-17 03:44:26,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=263, PETRI_TRANSITIONS=268} [2024-11-17 03:44:26,818 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -7 predicate places. [2024-11-17 03:44:26,818 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 268 transitions, 558 flow [2024-11-17 03:44:26,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 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) [2024-11-17 03:44:26,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:26,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:26,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:44:26,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:26,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -435433041, now seen corresponding path program 1 times [2024-11-17 03:44:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:26,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967564048] [2024-11-17 03:44:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967564048] [2024-11-17 03:44:26,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967564048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:26,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:26,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:44:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090398209] [2024-11-17 03:44:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:26,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:44:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:44:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:44:26,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 391 [2024-11-17 03:44:26,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 268 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2024-11-17 03:44:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 391 [2024-11-17 03:44:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:32,337 INFO L124 PetriNetUnfolderBase]: 27998/60717 cut-off events. [2024-11-17 03:44:32,338 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-11-17 03:44:32,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102539 conditions, 60717 events. 27998/60717 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 702273 event pairs, 24457 based on Foata normal form. 0/49286 useless extension candidates. Maximal degree in co-relation 102521. Up to 41620 conditions per place. [2024-11-17 03:44:32,888 INFO L140 encePairwiseOnDemand]: 388/391 looper letters, 106 selfloop transitions, 2 changer transitions 0/269 dead transitions. [2024-11-17 03:44:32,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 776 flow [2024-11-17 03:44:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:44:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:44:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2024-11-17 03:44:32,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5046888320545609 [2024-11-17 03:44:32,891 INFO L175 Difference]: Start difference. First operand has 263 places, 268 transitions, 558 flow. Second operand 3 states and 592 transitions. [2024-11-17 03:44:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 776 flow [2024-11-17 03:44:32,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 269 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:44:32,895 INFO L231 Difference]: Finished difference. Result has 263 places, 269 transitions, 564 flow [2024-11-17 03:44:32,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=391, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=263, PETRI_TRANSITIONS=269} [2024-11-17 03:44:32,896 INFO L277 CegarLoopForPetriNet]: 270 programPoint places, -7 predicate places. [2024-11-17 03:44:32,896 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 269 transitions, 564 flow [2024-11-17 03:44:32,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2024-11-17 03:44:32,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:32,897 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:44:32,897 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-17 03:44:32,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1364810323, now seen corresponding path program 1 times [2024-11-17 03:44:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479019237] [2024-11-17 03:44:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479019237] [2024-11-17 03:44:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479019237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:44:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944062077] [2024-11-17 03:44:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:32,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:32,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:44:32,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:44:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:33,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:44:33,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:44:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:33,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:44:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944062077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:44:33,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:44:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-17 03:44:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680685417] [2024-11-17 03:44:33,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:44:33,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:44:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:44:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:44:33,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 391 [2024-11-17 03:44:33,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 269 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 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) [2024-11-17 03:44:33,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:33,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 391 [2024-11-17 03:44:33,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand