./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 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/libvsync/clhlock.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'bed480fb9329cf4d2bde4e192428cf2ff72174b29c5e6148c18915395bc76ca3'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/libvsync/clhlock.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bed480fb9329cf4d2bde4e192428cf2ff72174b29c5e6148c18915395bc76ca3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:41:00,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:41:00,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:41:00,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:41:00,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:41:00,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:41:00,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:41:00,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:41:00,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:41:00,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:41:00,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:41:00,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:41:00,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:41:00,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:41:00,691 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:41:00,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:41:00,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:41:00,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:41:00,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:41:00,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:41:00,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:41:00,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:41:00,694 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bed480fb9329cf4d2bde4e192428cf2ff72174b29c5e6148c18915395bc76ca3 [2024-11-07 19:41:00,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:41:00,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:41:00,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:41:00,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:41:00,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:41:00,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/libvsync/clhlock.i [2024-11-07 19:41:02,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:41:02,530 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:41:02,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/libvsync/clhlock.i [2024-11-07 19:41:02,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77db4f708/f33ea793113342bc87862bfb88f37a80/FLAG638387341 [2024-11-07 19:41:02,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77db4f708/f33ea793113342bc87862bfb88f37a80 [2024-11-07 19:41:02,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:41:02,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:41:02,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:41:02,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:41:02,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:41:02,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:41:02" (1/1) ... [2024-11-07 19:41:02,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59749d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:02, skipping insertion in model container [2024-11-07 19:41:02,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:41:02" (1/1) ... [2024-11-07 19:41:02,740 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:41:05,003 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,008 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,008 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,014 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,017 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,104 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,109 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:41:05,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:41:05,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:41:05,323 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3755] [2024-11-07 19:41:05,324 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3757] [2024-11-07 19:41:05,324 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3762] [2024-11-07 19:41:05,325 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3764] [2024-11-07 19:41:05,325 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3770] [2024-11-07 19:41:05,325 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3772] [2024-11-07 19:41:05,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3778] [2024-11-07 19:41:05,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3780] [2024-11-07 19:41:05,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3786] [2024-11-07 19:41:05,326 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3788] [2024-11-07 19:41:05,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3794] [2024-11-07 19:41:05,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3796] [2024-11-07 19:41:05,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3802] [2024-11-07 19:41:05,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3804] [2024-11-07 19:41:05,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3810] [2024-11-07 19:41:05,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3812] [2024-11-07 19:41:05,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3817] [2024-11-07 19:41:05,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3819] [2024-11-07 19:41:05,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3824] [2024-11-07 19:41:05,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3826] [2024-11-07 19:41:05,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3831] [2024-11-07 19:41:05,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3833] [2024-11-07 19:41:05,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3838] [2024-11-07 19:41:05,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3840] [2024-11-07 19:41:05,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3845] [2024-11-07 19:41:05,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3847] [2024-11-07 19:41:05,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3852] [2024-11-07 19:41:05,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3855] [2024-11-07 19:41:05,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3861] [2024-11-07 19:41:05,331 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3864] [2024-11-07 19:41:05,332 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3870] [2024-11-07 19:41:05,333 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3873] [2024-11-07 19:41:05,333 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3879] [2024-11-07 19:41:05,333 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3882] [2024-11-07 19:41:05,334 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3888] [2024-11-07 19:41:05,334 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3891] [2024-11-07 19:41:05,335 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3897] [2024-11-07 19:41:05,335 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3900] [2024-11-07 19:41:05,336 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3907] [2024-11-07 19:41:05,336 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3910] [2024-11-07 19:41:05,336 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3917] [2024-11-07 19:41:05,337 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3920] [2024-11-07 19:41:05,337 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3927] [2024-11-07 19:41:05,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3930] [2024-11-07 19:41:05,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3937] [2024-11-07 19:41:05,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3940] [2024-11-07 19:41:05,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3947] [2024-11-07 19:41:05,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3950] [2024-11-07 19:41:05,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3957] [2024-11-07 19:41:05,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3960] [2024-11-07 19:41:05,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3966] [2024-11-07 19:41:05,339 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3969] [2024-11-07 19:41:05,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3975] [2024-11-07 19:41:05,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3978] [2024-11-07 19:41:05,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3984] [2024-11-07 19:41:05,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3987] [2024-11-07 19:41:05,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3993] [2024-11-07 19:41:05,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [3996] [2024-11-07 19:41:05,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4002] [2024-11-07 19:41:05,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4005] [2024-11-07 19:41:05,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4011] [2024-11-07 19:41:05,345 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4014] [2024-11-07 19:41:05,345 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4020] [2024-11-07 19:41:05,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4023] [2024-11-07 19:41:05,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4029] [2024-11-07 19:41:05,347 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4032] [2024-11-07 19:41:05,347 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4038] [2024-11-07 19:41:05,347 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4041] [2024-11-07 19:41:05,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4047] [2024-11-07 19:41:05,348 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4050] [2024-11-07 19:41:05,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4056] [2024-11-07 19:41:05,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4059] [2024-11-07 19:41:05,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4065] [2024-11-07 19:41:05,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4068] [2024-11-07 19:41:05,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4074] [2024-11-07 19:41:05,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4077] [2024-11-07 19:41:05,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4083] [2024-11-07 19:41:05,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4086] [2024-11-07 19:41:05,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4092] [2024-11-07 19:41:05,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4095] [2024-11-07 19:41:05,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4101] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4103] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4109] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4111] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4117] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4119] [2024-11-07 19:41:05,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4125] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4127] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4133] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4135] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4141] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4143] [2024-11-07 19:41:05,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4149] [2024-11-07 19:41:05,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4151] [2024-11-07 19:41:05,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4157] [2024-11-07 19:41:05,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4159] [2024-11-07 19:41:05,357 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4165] [2024-11-07 19:41:05,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4167] [2024-11-07 19:41:05,359 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4173] [2024-11-07 19:41:05,359 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" ::: "memory"); [4175] [2024-11-07 19:41:05,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:41:05,647 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:41:05,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05 WrapperNode [2024-11-07 19:41:05,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:41:05,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:41:05,649 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:41:05,649 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:41:05,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,751 INFO L138 Inliner]: procedures = 919, calls = 937, calls flagged for inlining = 820, calls inlined = 37, statements flattened = 364 [2024-11-07 19:41:05,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:41:05,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:41:05,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:41:05,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:41:05,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,791 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]. [2024-11-07 19:41:05,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:41:05,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:41:05,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:41:05,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:41:05,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (1/1) ... [2024-11-07 19:41:05,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:41:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:41:05,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:41:05,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:41:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:41:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:41:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:41:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:41:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure run [2024-11-07 19:41:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure run [2024-11-07 19:41:05,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:41:05,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:41:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 19:41:05,883 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:41:06,010 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:41:06,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:41:06,484 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:41:06,484 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:41:06,712 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:41:06,712 INFO L316 CfgBuilder]: Removed 67 assume(true) statements. [2024-11-07 19:41:06,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:41:06 BoogieIcfgContainer [2024-11-07 19:41:06,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:41:06,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:41:06,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:41:06,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:41:06,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:41:02" (1/3) ... [2024-11-07 19:41:06,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6366fde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:41:06, skipping insertion in model container [2024-11-07 19:41:06,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:05" (2/3) ... [2024-11-07 19:41:06,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6366fde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:41:06, skipping insertion in model container [2024-11-07 19:41:06,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:41:06" (3/3) ... [2024-11-07 19:41:06,724 INFO L112 eAbstractionObserver]: Analyzing ICFG clhlock.i [2024-11-07 19:41:06,735 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:41:06,736 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2024-11-07 19:41:06,736 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:41:06,811 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 19:41:06,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 203 transitions, 413 flow [2024-11-07 19:41:06,890 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2024-11-07 19:41:06,896 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:41:06,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 247 events. 75/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 763 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 166. Up to 6 conditions per place. [2024-11-07 19:41:06,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 203 transitions, 413 flow [2024-11-07 19:41:06,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 203 transitions, 413 flow [2024-11-07 19:41:06,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:41:06,934 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;@35affaf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:41:06,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-07 19:41:06,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:41:06,941 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-07 19:41:06,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:41:06,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:06,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:41:06,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:06,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 36999, now seen corresponding path program 1 times [2024-11-07 19:41:06,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:06,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090692532] [2024-11-07 19:41:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090692532] [2024-11-07 19:41:07,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090692532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:07,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705791103] [2024-11-07 19:41:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:07,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:07,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:07,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 203 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-07 19:41:07,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:07,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:07,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:07,680 INFO L124 PetriNetUnfolderBase]: 487/1491 cut-off events. [2024-11-07 19:41:07,680 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2024-11-07 19:41:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1491 events. 487/1491 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9950 event pairs, 430 based on Foata normal form. 715/1890 useless extension candidates. Maximal degree in co-relation 2401. Up to 992 conditions per place. [2024-11-07 19:41:07,689 INFO L140 encePairwiseOnDemand]: 143/203 looper letters, 73 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-11-07 19:41:07,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 143 transitions, 443 flow [2024-11-07 19:41:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-11-07 19:41:07,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5533661740558292 [2024-11-07 19:41:07,704 INFO L175 Difference]: Start difference. First operand has 144 places, 203 transitions, 413 flow. Second operand 3 states and 337 transitions. [2024-11-07 19:41:07,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 143 transitions, 443 flow [2024-11-07 19:41:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:41:07,710 INFO L231 Difference]: Finished difference. Result has 141 places, 143 transitions, 297 flow [2024-11-07 19:41:07,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=141, PETRI_TRANSITIONS=143} [2024-11-07 19:41:07,714 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -3 predicate places. [2024-11-07 19:41:07,714 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 143 transitions, 297 flow [2024-11-07 19:41:07,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-07 19:41:07,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:07,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:41:07,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:41:07,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:07,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash 37000, now seen corresponding path program 1 times [2024-11-07 19:41:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:07,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207498921] [2024-11-07 19:41:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:07,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207498921] [2024-11-07 19:41:07,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207498921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:07,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:07,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653282021] [2024-11-07 19:41:07,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:07,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:07,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:07,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-07 19:41:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:07,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:08,170 INFO L124 PetriNetUnfolderBase]: 487/1490 cut-off events. [2024-11-07 19:41:08,170 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:41:08,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 1490 events. 487/1490 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9984 event pairs, 430 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 2480. Up to 992 conditions per place. [2024-11-07 19:41:08,178 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 72 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-07 19:41:08,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 443 flow [2024-11-07 19:41:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2024-11-07 19:41:08,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.458128078817734 [2024-11-07 19:41:08,180 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 297 flow. Second operand 3 states and 279 transitions. [2024-11-07 19:41:08,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 443 flow [2024-11-07 19:41:08,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 439 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:41:08,183 INFO L231 Difference]: Finished difference. Result has 140 places, 142 transitions, 295 flow [2024-11-07 19:41:08,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=140, PETRI_TRANSITIONS=142} [2024-11-07 19:41:08,184 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2024-11-07 19:41:08,184 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 295 flow [2024-11-07 19:41:08,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-11-07 19:41:08,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:08,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:41:08,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:41:08,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:08,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash 35596803, now seen corresponding path program 1 times [2024-11-07 19:41:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:08,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468137997] [2024-11-07 19:41:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468137997] [2024-11-07 19:41:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468137997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689372758] [2024-11-07 19:41:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:08,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:41:08,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:41:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:41:08,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:08,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2024-11-07 19:41:08,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:08,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:08,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:08,685 INFO L124 PetriNetUnfolderBase]: 487/1489 cut-off events. [2024-11-07 19:41:08,685 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:41:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1489 events. 487/1489 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9952 event pairs, 430 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 2478. Up to 988 conditions per place. [2024-11-07 19:41:08,691 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 70 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2024-11-07 19:41:08,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 141 transitions, 439 flow [2024-11-07 19:41:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:41:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:41:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2024-11-07 19:41:08,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42610837438423643 [2024-11-07 19:41:08,694 INFO L175 Difference]: Start difference. First operand has 140 places, 142 transitions, 295 flow. Second operand 4 states and 346 transitions. [2024-11-07 19:41:08,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 141 transitions, 439 flow [2024-11-07 19:41:08,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:41:08,700 INFO L231 Difference]: Finished difference. Result has 140 places, 141 transitions, 295 flow [2024-11-07 19:41:08,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=140, PETRI_TRANSITIONS=141} [2024-11-07 19:41:08,701 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2024-11-07 19:41:08,701 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 141 transitions, 295 flow [2024-11-07 19:41:08,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2024-11-07 19:41:08,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:08,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:41:08,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:41:08,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:08,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 35596804, now seen corresponding path program 1 times [2024-11-07 19:41:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831620962] [2024-11-07 19:41:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831620962] [2024-11-07 19:41:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831620962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900657158] [2024-11-07 19:41:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:08,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:41:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:41:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:41:08,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:08,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 141 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2024-11-07 19:41:08,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:08,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:08,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:09,194 INFO L124 PetriNetUnfolderBase]: 487/1488 cut-off events. [2024-11-07 19:41:09,194 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:41:09,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 1488 events. 487/1488 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9957 event pairs, 430 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 2472. Up to 988 conditions per place. [2024-11-07 19:41:09,199 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 69 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2024-11-07 19:41:09,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 437 flow [2024-11-07 19:41:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:41:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:41:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2024-11-07 19:41:09,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4248768472906404 [2024-11-07 19:41:09,201 INFO L175 Difference]: Start difference. First operand has 140 places, 141 transitions, 295 flow. Second operand 4 states and 345 transitions. [2024-11-07 19:41:09,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 437 flow [2024-11-07 19:41:09,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 140 transitions, 431 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:41:09,203 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 293 flow [2024-11-07 19:41:09,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2024-11-07 19:41:09,203 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -5 predicate places. [2024-11-07 19:41:09,203 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 293 flow [2024-11-07 19:41:09,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2024-11-07 19:41:09,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:09,204 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] [2024-11-07 19:41:09,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:41:09,204 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:09,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1763013374, now seen corresponding path program 1 times [2024-11-07 19:41:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337645073] [2024-11-07 19:41:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337645073] [2024-11-07 19:41:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337645073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:09,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216137269] [2024-11-07 19:41:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:09,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:09,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:09,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:09,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:09,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:09,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:09,429 INFO L124 PetriNetUnfolderBase]: 487/1489 cut-off events. [2024-11-07 19:41:09,429 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:41:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1489 events. 487/1489 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9973 event pairs, 430 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 2474. Up to 992 conditions per place. [2024-11-07 19:41:09,435 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 71 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-11-07 19:41:09,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 441 flow [2024-11-07 19:41:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-07 19:41:09,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45648604269293924 [2024-11-07 19:41:09,436 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 293 flow. Second operand 3 states and 278 transitions. [2024-11-07 19:41:09,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 441 flow [2024-11-07 19:41:09,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:41:09,444 INFO L231 Difference]: Finished difference. Result has 139 places, 141 transitions, 299 flow [2024-11-07 19:41:09,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=139, PETRI_TRANSITIONS=141} [2024-11-07 19:41:09,445 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -5 predicate places. [2024-11-07 19:41:09,445 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 141 transitions, 299 flow [2024-11-07 19:41:09,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:09,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:09,445 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] [2024-11-07 19:41:09,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:41:09,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:09,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash -734720215, now seen corresponding path program 1 times [2024-11-07 19:41:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:09,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392800738] [2024-11-07 19:41:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:09,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392800738] [2024-11-07 19:41:09,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392800738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:41:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105988628] [2024-11-07 19:41:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:09,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:41:09,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:41:09,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:41:09,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 19:41:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:09,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:41:09,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:41:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:09,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:41:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:09,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105988628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:41:09,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:41:09,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-07 19:41:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453885674] [2024-11-07 19:41:09,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:41:09,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:41:09,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:41:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:41:09,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2024-11-07 19:41:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 141 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2024-11-07 19:41:09,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:09,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2024-11-07 19:41:09,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:09,890 INFO L124 PetriNetUnfolderBase]: 487/1491 cut-off events. [2024-11-07 19:41:09,890 INFO L125 PetriNetUnfolderBase]: For 9/11 co-relation queries the response was YES. [2024-11-07 19:41:09,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1491 events. 487/1491 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9954 event pairs, 430 based on Foata normal form. 0/1178 useless extension candidates. Maximal degree in co-relation 2472. Up to 992 conditions per place. [2024-11-07 19:41:09,896 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 71 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2024-11-07 19:41:09,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 457 flow [2024-11-07 19:41:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:41:09,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:41:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2024-11-07 19:41:09,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41083743842364534 [2024-11-07 19:41:09,898 INFO L175 Difference]: Start difference. First operand has 139 places, 141 transitions, 299 flow. Second operand 5 states and 417 transitions. [2024-11-07 19:41:09,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 457 flow [2024-11-07 19:41:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 143 transitions, 453 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:41:09,901 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 321 flow [2024-11-07 19:41:09,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2024-11-07 19:41:09,903 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2024-11-07 19:41:09,903 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 321 flow [2024-11-07 19:41:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 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) [2024-11-07 19:41:09,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:09,904 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:41:09,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 19:41:10,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:41:10,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:10,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash -290310711, now seen corresponding path program 2 times [2024-11-07 19:41:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934825824] [2024-11-07 19:41:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:10,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:41:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934825824] [2024-11-07 19:41:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934825824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:10,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:10,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:10,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289445994] [2024-11-07 19:41:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:10,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:10,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:10,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 203 [2024-11-07 19:41:10,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2024-11-07 19:41:10,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:10,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 203 [2024-11-07 19:41:10,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:10,456 INFO L124 PetriNetUnfolderBase]: 583/1701 cut-off events. [2024-11-07 19:41:10,457 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-07 19:41:10,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2905 conditions, 1701 events. 583/1701 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11762 event pairs, 430 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 2861. Up to 994 conditions per place. [2024-11-07 19:41:10,464 INFO L140 encePairwiseOnDemand]: 199/203 looper letters, 123 selfloop transitions, 2 changer transitions 0/189 dead transitions. [2024-11-07 19:41:10,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 189 transitions, 663 flow [2024-11-07 19:41:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2024-11-07 19:41:10,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5188834154351396 [2024-11-07 19:41:10,465 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 321 flow. Second operand 3 states and 316 transitions. [2024-11-07 19:41:10,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 189 transitions, 663 flow [2024-11-07 19:41:10,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 189 transitions, 653 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-07 19:41:10,468 INFO L231 Difference]: Finished difference. Result has 143 places, 141 transitions, 311 flow [2024-11-07 19:41:10,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=143, PETRI_TRANSITIONS=141} [2024-11-07 19:41:10,469 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, -1 predicate places. [2024-11-07 19:41:10,469 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 141 transitions, 311 flow [2024-11-07 19:41:10,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2024-11-07 19:41:10,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:10,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:41:10,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:41:10,469 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:10,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash -290310710, now seen corresponding path program 1 times [2024-11-07 19:41:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159889982] [2024-11-07 19:41:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:41:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159889982] [2024-11-07 19:41:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159889982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:41:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916329798] [2024-11-07 19:41:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:10,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:41:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:41:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:41:10,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 203 [2024-11-07 19:41:10,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 141 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:10,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:10,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 203 [2024-11-07 19:41:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:10,954 INFO L124 PetriNetUnfolderBase]: 534/1588 cut-off events. [2024-11-07 19:41:10,954 INFO L125 PetriNetUnfolderBase]: For 57/59 co-relation queries the response was YES. [2024-11-07 19:41:10,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2738 conditions, 1588 events. 534/1588 cut-off events. For 57/59 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10839 event pairs, 295 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 2697. Up to 662 conditions per place. [2024-11-07 19:41:10,961 INFO L140 encePairwiseOnDemand]: 196/203 looper letters, 168 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-11-07 19:41:10,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 237 transitions, 849 flow [2024-11-07 19:41:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:41:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:41:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 436 transitions. [2024-11-07 19:41:10,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5369458128078818 [2024-11-07 19:41:10,963 INFO L175 Difference]: Start difference. First operand has 143 places, 141 transitions, 311 flow. Second operand 4 states and 436 transitions. [2024-11-07 19:41:10,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 237 transitions, 849 flow [2024-11-07 19:41:10,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 237 transitions, 845 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:41:10,966 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 329 flow [2024-11-07 19:41:10,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2024-11-07 19:41:10,967 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2024-11-07 19:41:10,967 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 329 flow [2024-11-07 19:41:10,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:10,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:10,968 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:41:10,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:41:10,968 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-07 19:41:10,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2045672603, now seen corresponding path program 1 times [2024-11-07 19:41:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353291717] [2024-11-07 19:41:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:41:11,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:41:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:41:11,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:41:11,039 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:41:11,040 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-11-07 19:41:11,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (50 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (49 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (48 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-11-07 19:41:11,042 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-11-07 19:41:11,043 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-11-07 19:41:11,044 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-11-07 19:41:11,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location runErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-11-07 19:41:11,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:41:11,046 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:41:11,049 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:41:11,049 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:41:11,121 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:41:11,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 326 transitions, 668 flow [2024-11-07 19:41:11,149 INFO L124 PetriNetUnfolderBase]: 135/447 cut-off events. [2024-11-07 19:41:11,150 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:41:11,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 447 events. 135/447 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1920 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 318. Up to 12 conditions per place. [2024-11-07 19:41:11,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 326 transitions, 668 flow [2024-11-07 19:41:11,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 326 transitions, 668 flow [2024-11-07 19:41:11,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:41:11,162 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;@35affaf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:41:11,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2024-11-07 19:41:11,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:41:11,163 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-07 19:41:11,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:41:11,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:11,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:41:11,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:11,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash 47431, now seen corresponding path program 1 times [2024-11-07 19:41:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:11,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420979784] [2024-11-07 19:41:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:11,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:11,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420979784] [2024-11-07 19:41:11,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420979784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:11,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:11,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601044299] [2024-11-07 19:41:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:11,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:11,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:11,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:11,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 326 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:11,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:11,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:11,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:17,509 INFO L124 PetriNetUnfolderBase]: 45488/87899 cut-off events. [2024-11-07 19:41:17,509 INFO L125 PetriNetUnfolderBase]: For 393/405 co-relation queries the response was YES. [2024-11-07 19:41:17,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155770 conditions, 87899 events. 45488/87899 cut-off events. For 393/405 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 916324 event pairs, 40506 based on Foata normal form. 43431/111126 useless extension candidates. Maximal degree in co-relation 142636. Up to 67641 conditions per place. [2024-11-07 19:41:17,952 INFO L140 encePairwiseOnDemand]: 232/326 looper letters, 123 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2024-11-07 19:41:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 730 flow [2024-11-07 19:41:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2024-11-07 19:41:17,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5501022494887525 [2024-11-07 19:41:17,955 INFO L175 Difference]: Start difference. First operand has 231 places, 326 transitions, 668 flow. Second operand 3 states and 538 transitions. [2024-11-07 19:41:17,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 730 flow [2024-11-07 19:41:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 232 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:41:17,960 INFO L231 Difference]: Finished difference. Result has 226 places, 232 transitions, 484 flow [2024-11-07 19:41:17,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=226, PETRI_TRANSITIONS=232} [2024-11-07 19:41:17,962 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -5 predicate places. [2024-11-07 19:41:17,962 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 232 transitions, 484 flow [2024-11-07 19:41:17,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:17,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:17,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:41:17,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:41:17,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:17,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 47432, now seen corresponding path program 1 times [2024-11-07 19:41:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694144121] [2024-11-07 19:41:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:18,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:18,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694144121] [2024-11-07 19:41:18,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694144121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325387616] [2024-11-07 19:41:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:18,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:18,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 232 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:23,745 INFO L124 PetriNetUnfolderBase]: 45488/87898 cut-off events. [2024-11-07 19:41:23,745 INFO L125 PetriNetUnfolderBase]: For 387/399 co-relation queries the response was YES. [2024-11-07 19:41:23,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155771 conditions, 87898 events. 45488/87898 cut-off events. For 387/399 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 916221 event pairs, 40506 based on Foata normal form. 0/67695 useless extension candidates. Maximal degree in co-relation 155758. Up to 67641 conditions per place. [2024-11-07 19:41:24,180 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 122 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2024-11-07 19:41:24,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 231 transitions, 730 flow [2024-11-07 19:41:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2024-11-07 19:41:24,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4560327198364008 [2024-11-07 19:41:24,182 INFO L175 Difference]: Start difference. First operand has 226 places, 232 transitions, 484 flow. Second operand 3 states and 446 transitions. [2024-11-07 19:41:24,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 231 transitions, 730 flow [2024-11-07 19:41:24,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 231 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:41:24,185 INFO L231 Difference]: Finished difference. Result has 225 places, 231 transitions, 482 flow [2024-11-07 19:41:24,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=225, PETRI_TRANSITIONS=231} [2024-11-07 19:41:24,186 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -6 predicate places. [2024-11-07 19:41:24,186 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 231 transitions, 482 flow [2024-11-07 19:41:24,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:41:24,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:24,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:41:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:41:24,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:24,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash 45632387, now seen corresponding path program 1 times [2024-11-07 19:41:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651822748] [2024-11-07 19:41:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:24,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651822748] [2024-11-07 19:41:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651822748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:24,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823475834] [2024-11-07 19:41:24,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:24,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:41:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:41:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:41:24,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:24,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 231 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2024-11-07 19:41:24,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:24,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:30,130 INFO L124 PetriNetUnfolderBase]: 45488/87897 cut-off events. [2024-11-07 19:41:30,130 INFO L125 PetriNetUnfolderBase]: For 387/399 co-relation queries the response was YES. [2024-11-07 19:41:30,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155769 conditions, 87897 events. 45488/87897 cut-off events. For 387/399 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 916561 event pairs, 40506 based on Foata normal form. 0/67695 useless extension candidates. Maximal degree in co-relation 155756. Up to 67637 conditions per place. [2024-11-07 19:41:30,562 INFO L140 encePairwiseOnDemand]: 322/326 looper letters, 120 selfloop transitions, 3 changer transitions 0/230 dead transitions. [2024-11-07 19:41:30,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 230 transitions, 726 flow [2024-11-07 19:41:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:41:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:41:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2024-11-07 19:41:30,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4233128834355828 [2024-11-07 19:41:30,564 INFO L175 Difference]: Start difference. First operand has 225 places, 231 transitions, 482 flow. Second operand 4 states and 552 transitions. [2024-11-07 19:41:30,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 230 transitions, 726 flow [2024-11-07 19:41:30,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 230 transitions, 722 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:41:30,567 INFO L231 Difference]: Finished difference. Result has 225 places, 230 transitions, 482 flow [2024-11-07 19:41:30,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=225, PETRI_TRANSITIONS=230} [2024-11-07 19:41:30,568 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -6 predicate places. [2024-11-07 19:41:30,568 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 230 transitions, 482 flow [2024-11-07 19:41:30,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2024-11-07 19:41:30,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:30,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:41:30,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:41:30,569 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:30,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash 45632388, now seen corresponding path program 1 times [2024-11-07 19:41:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:30,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083231952] [2024-11-07 19:41:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:30,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:30,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083231952] [2024-11-07 19:41:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083231952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:30,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818451522] [2024-11-07 19:41:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:30,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:41:30,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:41:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:41:30,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:30,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 230 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2024-11-07 19:41:30,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:30,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:30,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:36,900 INFO L124 PetriNetUnfolderBase]: 45488/87896 cut-off events. [2024-11-07 19:41:36,900 INFO L125 PetriNetUnfolderBase]: For 387/399 co-relation queries the response was YES. [2024-11-07 19:41:37,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155768 conditions, 87896 events. 45488/87896 cut-off events. For 387/399 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 916286 event pairs, 40506 based on Foata normal form. 0/67695 useless extension candidates. Maximal degree in co-relation 155750. Up to 67637 conditions per place. [2024-11-07 19:41:37,306 INFO L140 encePairwiseOnDemand]: 322/326 looper letters, 119 selfloop transitions, 3 changer transitions 0/229 dead transitions. [2024-11-07 19:41:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 724 flow [2024-11-07 19:41:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:41:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:41:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2024-11-07 19:41:37,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42254601226993865 [2024-11-07 19:41:37,308 INFO L175 Difference]: Start difference. First operand has 225 places, 230 transitions, 482 flow. Second operand 4 states and 551 transitions. [2024-11-07 19:41:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 724 flow [2024-11-07 19:41:37,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 229 transitions, 718 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:41:37,311 INFO L231 Difference]: Finished difference. Result has 224 places, 229 transitions, 480 flow [2024-11-07 19:41:37,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=480, PETRI_PLACES=224, PETRI_TRANSITIONS=229} [2024-11-07 19:41:37,312 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -7 predicate places. [2024-11-07 19:41:37,312 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 229 transitions, 480 flow [2024-11-07 19:41:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2024-11-07 19:41:37,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:37,313 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] [2024-11-07 19:41:37,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:41:37,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:37,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1953260930, now seen corresponding path program 1 times [2024-11-07 19:41:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419491770] [2024-11-07 19:41:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:37,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419491770] [2024-11-07 19:41:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419491770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:37,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:37,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:41:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010616155] [2024-11-07 19:41:37,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:37,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:37,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:37,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 229 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-07 19:41:37,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:37,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:37,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:42,924 INFO L124 PetriNetUnfolderBase]: 45488/87897 cut-off events. [2024-11-07 19:41:42,925 INFO L125 PetriNetUnfolderBase]: For 387/399 co-relation queries the response was YES. [2024-11-07 19:41:43,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155770 conditions, 87897 events. 45488/87897 cut-off events. For 387/399 co-relation queries the response was YES. Maximal size of possible extension queue 2235. Compared 916094 event pairs, 40506 based on Foata normal form. 0/67696 useless extension candidates. Maximal degree in co-relation 155752. Up to 67641 conditions per place. [2024-11-07 19:41:43,572 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 121 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2024-11-07 19:41:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 230 transitions, 728 flow [2024-11-07 19:41:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:41:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:41:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2024-11-07 19:41:43,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4550102249488753 [2024-11-07 19:41:43,574 INFO L175 Difference]: Start difference. First operand has 224 places, 229 transitions, 480 flow. Second operand 3 states and 445 transitions. [2024-11-07 19:41:43,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 230 transitions, 728 flow [2024-11-07 19:41:43,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 230 transitions, 722 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:41:43,577 INFO L231 Difference]: Finished difference. Result has 224 places, 230 transitions, 486 flow [2024-11-07 19:41:43,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=224, PETRI_TRANSITIONS=230} [2024-11-07 19:41:43,578 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -7 predicate places. [2024-11-07 19:41:43,578 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 230 transitions, 486 flow [2024-11-07 19:41:43,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-11-07 19:41:43,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:43,579 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] [2024-11-07 19:41:43,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:41:43,579 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:43,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 24893679, now seen corresponding path program 1 times [2024-11-07 19:41:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083580118] [2024-11-07 19:41:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:43,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083580118] [2024-11-07 19:41:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083580118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:41:43,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594682191] [2024-11-07 19:41:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:43,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:41:43,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:41:43,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:41:43,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 19:41:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:43,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:41:43,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:41:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:43,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:41:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:41:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594682191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:41:43,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:41:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-07 19:41:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244417833] [2024-11-07 19:41:43,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:41:43,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:41:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:41:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:41:43,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 326 [2024-11-07 19:41:43,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 230 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 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) [2024-11-07 19:41:43,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:43,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 326 [2024-11-07 19:41:43,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:49,806 INFO L124 PetriNetUnfolderBase]: 45488/87899 cut-off events. [2024-11-07 19:41:49,806 INFO L125 PetriNetUnfolderBase]: For 390/402 co-relation queries the response was YES. [2024-11-07 19:41:49,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155779 conditions, 87899 events. 45488/87899 cut-off events. For 390/402 co-relation queries the response was YES. Maximal size of possible extension queue 2235. Compared 916074 event pairs, 40506 based on Foata normal form. 0/67698 useless extension candidates. Maximal degree in co-relation 155750. Up to 67641 conditions per place. [2024-11-07 19:41:50,289 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 121 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2024-11-07 19:41:50,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 232 transitions, 744 flow [2024-11-07 19:41:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:41:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:41:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2024-11-07 19:41:50,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40613496932515336 [2024-11-07 19:41:50,291 INFO L175 Difference]: Start difference. First operand has 224 places, 230 transitions, 486 flow. Second operand 5 states and 662 transitions. [2024-11-07 19:41:50,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 232 transitions, 744 flow [2024-11-07 19:41:50,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 232 transitions, 740 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:41:50,294 INFO L231 Difference]: Finished difference. Result has 229 places, 232 transitions, 508 flow [2024-11-07 19:41:50,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=232} [2024-11-07 19:41:50,295 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -2 predicate places. [2024-11-07 19:41:50,295 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 232 transitions, 508 flow [2024-11-07 19:41:50,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 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) [2024-11-07 19:41:50,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:50,295 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:41:50,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:41:50,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 19:41:50,496 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 81 more)] === [2024-11-07 19:41:50,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -445788465, now seen corresponding path program 2 times [2024-11-07 19:41:50,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439590696] [2024-11-07 19:41:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:50,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 19:41:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439590696] [2024-11-07 19:41:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439590696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:41:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:41:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:41:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107513110] [2024-11-07 19:41:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:41:50,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:41:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:41:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:41:50,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 326 [2024-11-07 19:41:50,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 232 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2024-11-07 19:41:50,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:50,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 326 [2024-11-07 19:41:50,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand