./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:51:56,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:51:56,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:51:56,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:51:56,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:51:56,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:51:56,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:51:56,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:51:56,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:51:56,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:51:56,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:51:56,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:51:56,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:51:56,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:51:56,392 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:51:56,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:51:56,394 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:51:56,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:51:56,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:51:56,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:51:56,395 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:51:56,397 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:51:56,397 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:51:56,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:51:56,398 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:51:56,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:51:56,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:51:56,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:51:56,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:51:56,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:51:56,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:51:56,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:51:56,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:51:56,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:51:56,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:51:56,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:51:56,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:51:56,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:51:56,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:51:56,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:51:56,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:51:56,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:51:56,402 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-10-14 19:51:56,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:51:56,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:51:56,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:51:56,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:51:56,700 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:51:56,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-10-14 19:51:58,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:51:58,302 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:51:58,303 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-10-14 19:51:58,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a526ee0/478d1c95650d458990dd22bb9e40d737/FLAG514ceb784 [2024-10-14 19:51:58,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a526ee0/478d1c95650d458990dd22bb9e40d737 [2024-10-14 19:51:58,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:51:58,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:51:58,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:51:58,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:51:58,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:51:58,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:51:58" (1/1) ... [2024-10-14 19:51:58,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df4d4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:58, skipping insertion in model container [2024-10-14 19:51:58,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:51:58" (1/1) ... [2024-10-14 19:51:58,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:51:58,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:51:58,606 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:51:58,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b77ce2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:51:58, skipping insertion in model container [2024-10-14 19:51:58,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:51:58,608 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:51:58,609 INFO L158 Benchmark]: Toolchain (without parser) took 282.95ms. Allocated memory is still 144.7MB. Free memory was 90.1MB in the beginning and 78.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:51:58,610 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:51:58,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.01ms. Allocated memory is still 144.7MB. Free memory was 89.8MB in the beginning and 78.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:51:58,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 144.7MB. Free memory is still 110.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.01ms. Allocated memory is still 144.7MB. Free memory was 89.8MB in the beginning and 78.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 145]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:52:00,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:52:00,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:52:00,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:52:00,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:52:00,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:52:00,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:52:00,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:52:00,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:52:00,818 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:52:00,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:52:00,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:52:00,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:52:00,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:52:00,821 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:52:00,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:52:00,822 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:52:00,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:52:00,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:52:00,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:52:00,823 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:52:00,823 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:52:00,823 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:52:00,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:52:00,824 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:52:00,824 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:52:00,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:52:00,825 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:52:00,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:52:00,825 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:52:00,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:52:00,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:52:00,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:52:00,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:52:00,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:52:00,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:52:00,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:52:00,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:52:00,828 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:52:00,828 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:52:00,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:52:00,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:52:00,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:52:00,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:52:00,829 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:52:00,830 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-10-14 19:52:01,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:52:01,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:52:01,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:52:01,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:52:01,179 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:52:01,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-10-14 19:52:02,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:52:03,041 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:52:03,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-10-14 19:52:03,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af85a08ac/a751bb2da1e545c6b6a0b61bdf8a4e18/FLAG1b7a481e1 [2024-10-14 19:52:03,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af85a08ac/a751bb2da1e545c6b6a0b61bdf8a4e18 [2024-10-14 19:52:03,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:52:03,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:52:03,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:03,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:52:03,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:52:03,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d7073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03, skipping insertion in model container [2024-10-14 19:52:03,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:52:03,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:03,361 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:52:03,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:52:03,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:03,402 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:52:03,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:03,466 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:52:03,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03 WrapperNode [2024-10-14 19:52:03,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:03,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:52:03,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:52:03,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:52:03,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,536 INFO L138 Inliner]: procedures = 28, calls = 49, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 283 [2024-10-14 19:52:03,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:52:03,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:52:03,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:52:03,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:52:03,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,602 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:52:03,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:52:03,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:52:03,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:52:03,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:52:03,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (1/1) ... [2024-10-14 19:52:03,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:52:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:03,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:52:03,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:52:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:52:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:52:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:52:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:52:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:52:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:52:03,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:52:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:52:03,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:52:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:52:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:52:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 19:52:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 19:52:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:52:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:52:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:52:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:52:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:52:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:52:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:52:03,729 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:52:03,887 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:52:03,889 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:52:04,456 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:52:04,456 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:52:04,801 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:52:04,801 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-14 19:52:04,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:52:04 BoogieIcfgContainer [2024-10-14 19:52:04,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:52:04,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:52:04,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:52:04,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:52:04,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:52:03" (1/3) ... [2024-10-14 19:52:04,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ae3b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:52:04, skipping insertion in model container [2024-10-14 19:52:04,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:03" (2/3) ... [2024-10-14 19:52:04,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ae3b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:52:04, skipping insertion in model container [2024-10-14 19:52:04,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:52:04" (3/3) ... [2024-10-14 19:52:04,811 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-10-14 19:52:04,828 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:52:04,829 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-14 19:52:04,829 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:52:04,901 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-14 19:52:04,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 162 flow [2024-10-14 19:52:04,975 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2024-10-14 19:52:04,975 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:52:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-14 19:52:04,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 162 flow [2024-10-14 19:52:04,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 148 flow [2024-10-14 19:52:04,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:52:05,006 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;@91c762d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:52:05,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-10-14 19:52:05,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:52:05,013 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:52:05,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:52:05,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:05,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:52:05,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:05,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 851811, now seen corresponding path program 1 times [2024-10-14 19:52:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61885444] [2024-10-14 19:52:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:05,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:05,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:05,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:05,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:52:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:05,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:52:05,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:05,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:52:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:05,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:05,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61885444] [2024-10-14 19:52:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61885444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:05,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:05,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:52:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714805845] [2024-10-14 19:52:05,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:05,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:52:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:52:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:52:05,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-10-14 19:52:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-14 19:52:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-10-14 19:52:05,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:11,357 INFO L124 PetriNetUnfolderBase]: 52315/67901 cut-off events. [2024-10-14 19:52:11,359 INFO L125 PetriNetUnfolderBase]: For 2955/2955 co-relation queries the response was YES. [2024-10-14 19:52:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138111 conditions, 67901 events. 52315/67901 cut-off events. For 2955/2955 co-relation queries the response was YES. Maximal size of possible extension queue 2659. Compared 379154 event pairs, 45712 based on Foata normal form. 1/48189 useless extension candidates. Maximal degree in co-relation 130913. Up to 67742 conditions per place. [2024-10-14 19:52:11,894 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 47 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-14 19:52:11,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 232 flow [2024-10-14 19:52:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:52:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:52:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-10-14 19:52:11,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43781094527363185 [2024-10-14 19:52:11,909 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 3 states and 88 transitions. [2024-10-14 19:52:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 232 flow [2024-10-14 19:52:12,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 19:52:12,045 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 122 flow [2024-10-14 19:52:12,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-10-14 19:52:12,052 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-10-14 19:52:12,053 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 122 flow [2024-10-14 19:52:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-14 19:52:12,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:12,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:52:12,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:52:12,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:12,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:12,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:12,256 INFO L85 PathProgramCache]: Analyzing trace with hash 851812, now seen corresponding path program 1 times [2024-10-14 19:52:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777209833] [2024-10-14 19:52:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:12,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:12,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:52:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:12,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:52:12,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:12,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:12,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:12,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777209833] [2024-10-14 19:52:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777209833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876893412] [2024-10-14 19:52:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:12,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:12,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-10-14 19:52:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 19:52:12,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:12,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-10-14 19:52:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:16,988 INFO L124 PetriNetUnfolderBase]: 52316/67904 cut-off events. [2024-10-14 19:52:16,989 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-10-14 19:52:17,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136478 conditions, 67904 events. 52316/67904 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 2659. Compared 379133 event pairs, 45712 based on Foata normal form. 0/48191 useless extension candidates. Maximal degree in co-relation 136456. Up to 67747 conditions per place. [2024-10-14 19:52:17,381 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 49 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-10-14 19:52:17,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 236 flow [2024-10-14 19:52:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-14 19:52:17,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3656716417910448 [2024-10-14 19:52:17,386 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 122 flow. Second operand 4 states and 98 transitions. [2024-10-14 19:52:17,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 236 flow [2024-10-14 19:52:17,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:17,390 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 145 flow [2024-10-14 19:52:17,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-10-14 19:52:17,391 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-10-14 19:52:17,392 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 145 flow [2024-10-14 19:52:17,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-14 19:52:17,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:17,392 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:52:17,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:17,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:17,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash 818618606, now seen corresponding path program 1 times [2024-10-14 19:52:17,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347992177] [2024-10-14 19:52:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:17,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:17,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:52:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:17,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:52:17,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:17,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:17,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:18,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347992177] [2024-10-14 19:52:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347992177] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:18,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:18,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:52:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447745384] [2024-10-14 19:52:18,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:18,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:52:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:52:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:52:18,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-10-14 19:52:18,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 145 flow. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:18,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:18,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-10-14 19:52:18,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:23,218 INFO L124 PetriNetUnfolderBase]: 52319/67913 cut-off events. [2024-10-14 19:52:23,219 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2024-10-14 19:52:23,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136515 conditions, 67913 events. 52319/67913 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 2646. Compared 379142 event pairs, 45712 based on Foata normal form. 0/48196 useless extension candidates. Maximal degree in co-relation 136463. Up to 67750 conditions per place. [2024-10-14 19:52:23,706 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 49 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-10-14 19:52:23,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 305 flow [2024-10-14 19:52:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:52:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:52:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-10-14 19:52:23,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26119402985074625 [2024-10-14 19:52:23,709 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 145 flow. Second operand 10 states and 175 transitions. [2024-10-14 19:52:23,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 305 flow [2024-10-14 19:52:23,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:52:23,711 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 222 flow [2024-10-14 19:52:23,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-10-14 19:52:23,712 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-10-14 19:52:23,712 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 222 flow [2024-10-14 19:52:23,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:23,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:23,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:23,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:23,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:23,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:23,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash 784996244, now seen corresponding path program 1 times [2024-10-14 19:52:23,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616003657] [2024-10-14 19:52:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:23,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:23,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:23,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:52:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:23,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:52:23,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:23,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:52:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:24,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:24,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:24,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616003657] [2024-10-14 19:52:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616003657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:24,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825541864] [2024-10-14 19:52:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:24,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:24,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-10-14 19:52:24,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-14 19:52:24,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:24,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-10-14 19:52:24,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:26,582 INFO L124 PetriNetUnfolderBase]: 33152/43111 cut-off events. [2024-10-14 19:52:26,582 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2024-10-14 19:52:26,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86730 conditions, 43111 events. 33152/43111 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 229232 event pairs, 28438 based on Foata normal form. 0/33750 useless extension candidates. Maximal degree in co-relation 86696. Up to 42975 conditions per place. [2024-10-14 19:52:26,831 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 51 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-10-14 19:52:26,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 328 flow [2024-10-14 19:52:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-14 19:52:26,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34701492537313433 [2024-10-14 19:52:26,833 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 222 flow. Second operand 4 states and 93 transitions. [2024-10-14 19:52:26,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 328 flow [2024-10-14 19:52:26,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 298 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:52:26,838 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 196 flow [2024-10-14 19:52:26,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-10-14 19:52:26,839 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-10-14 19:52:26,839 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 196 flow [2024-10-14 19:52:26,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-10-14 19:52:26,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:26,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:26,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:52:27,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:27,043 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:27,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 784996245, now seen corresponding path program 1 times [2024-10-14 19:52:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642345131] [2024-10-14 19:52:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:27,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:27,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:27,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:52:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:27,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:52:27,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:27,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-14 19:52:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:27,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:27,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:27,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642345131] [2024-10-14 19:52:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642345131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:27,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:27,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847557995] [2024-10-14 19:52:27,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:27,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:27,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:27,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-10-14 19:52:27,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-14 19:52:27,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:27,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-10-14 19:52:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:31,058 INFO L124 PetriNetUnfolderBase]: 46543/60412 cut-off events. [2024-10-14 19:52:31,058 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-10-14 19:52:31,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121604 conditions, 60412 events. 46543/60412 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 344994 event pairs, 12397 based on Foata normal form. 0/47644 useless extension candidates. Maximal degree in co-relation 121573. Up to 44489 conditions per place. [2024-10-14 19:52:31,371 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 85 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2024-10-14 19:52:31,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 461 flow [2024-10-14 19:52:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-14 19:52:31,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48880597014925375 [2024-10-14 19:52:31,373 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 196 flow. Second operand 4 states and 131 transitions. [2024-10-14 19:52:31,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 461 flow [2024-10-14 19:52:31,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:31,376 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 224 flow [2024-10-14 19:52:31,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-10-14 19:52:31,377 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-10-14 19:52:31,377 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 224 flow [2024-10-14 19:52:31,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-14 19:52:31,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:31,377 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:52:31,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:52:31,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:31,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:31,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 14853772, now seen corresponding path program 2 times [2024-10-14 19:52:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717575666] [2024-10-14 19:52:31,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:52:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:31,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:31,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:52:31,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:52:31,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:31,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:52:31,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:31,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:31,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:32,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717575666] [2024-10-14 19:52:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717575666] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:32,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:32,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:52:32,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149269330] [2024-10-14 19:52:32,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:32,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:52:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:52:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:52:32,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 67 [2024-10-14 19:52:32,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 224 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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) [2024-10-14 19:52:32,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:32,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 67 [2024-10-14 19:52:32,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:38,616 INFO L124 PetriNetUnfolderBase]: 46210/60091 cut-off events. [2024-10-14 19:52:38,616 INFO L125 PetriNetUnfolderBase]: For 4520/4520 co-relation queries the response was YES. [2024-10-14 19:52:38,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128699 conditions, 60091 events. 46210/60091 cut-off events. For 4520/4520 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 330118 event pairs, 38767 based on Foata normal form. 6/47402 useless extension candidates. Maximal degree in co-relation 128593. Up to 59939 conditions per place. [2024-10-14 19:52:38,960 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 47 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-10-14 19:52:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 488 flow [2024-10-14 19:52:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:52:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:52:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 324 transitions. [2024-10-14 19:52:38,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2198100407055631 [2024-10-14 19:52:38,963 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 224 flow. Second operand 22 states and 324 transitions. [2024-10-14 19:52:38,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 488 flow [2024-10-14 19:52:38,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:38,971 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 409 flow [2024-10-14 19:52:38,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=409, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-10-14 19:52:38,972 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2024-10-14 19:52:38,972 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 409 flow [2024-10-14 19:52:38,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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) [2024-10-14 19:52:38,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:38,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:38,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:52:39,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:39,174 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-14 19:52:39,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:39,174 INFO L85 PathProgramCache]: Analyzing trace with hash 410954161, now seen corresponding path program 1 times [2024-10-14 19:52:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281892861] [2024-10-14 19:52:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:39,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:39,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:39,176 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:39,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:52:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:39,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:52:39,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:39,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-14 19:52:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:39,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:39,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281892861] [2024-10-14 19:52:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281892861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:39,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92893328] [2024-10-14 19:52:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:39,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:39,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 67 [2024-10-14 19:52:39,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2024-10-14 19:52:39,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:39,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 67 [2024-10-14 19:52:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand