./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/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/popl20-commit-2.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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:20:30,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:20:31,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:20:31,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:20:31,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:20:31,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:20:31,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:20:31,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:20:31,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:20:31,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:20:31,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:20:31,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:20:31,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:20:31,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:20:31,112 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:20:31,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:20:31,113 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:20:31,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:20:31,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:20:31,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:20:31,114 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:20:31,117 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:20:31,118 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:20:31,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:20:31,118 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:20:31,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:20:31,119 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:20:31,119 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:20:31,119 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:20:31,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:20:31,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:20:31,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:20:31,120 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:20:31,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:20:31,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:20:31,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:20:31,121 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:20:31,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:20:31,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:20:31,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:20:31,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:20:31,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:20:31,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-10-24 19:20:31,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:20:31,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:20:31,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:20:31,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:20:31,434 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:20:31,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-10-24 19:20:32,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:20:33,110 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:20:33,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-10-24 19:20:33,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fae2a7d8/2ca4c554ccfb42d1be3e562335d4a1de/FLAG3a79f38f2 [2024-10-24 19:20:33,142 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fae2a7d8/2ca4c554ccfb42d1be3e562335d4a1de [2024-10-24 19:20:33,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:20:33,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:20:33,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:20:33,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:20:33,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:20:33,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:33" (1/1) ... [2024-10-24 19:20:33,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43616b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:33, skipping insertion in model container [2024-10-24 19:20:33,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:33" (1/1) ... [2024-10-24 19:20:33,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:20:33,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:20:33,468 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) [2024-10-24 19:20:33,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c7e037b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:33, skipping insertion in model container [2024-10-24 19:20:33,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:20:33,470 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:20:33,471 INFO L158 Benchmark]: Toolchain (without parser) took 323.51ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 108.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:20:33,473 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:20:33,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.90ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 108.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:20:33,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.90ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 108.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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/popl20-commit-2.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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:20:35,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:20:35,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:20:35,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:20:35,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:20:35,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:20:35,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:20:35,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:20:35,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:20:35,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:20:35,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:20:35,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:20:35,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:20:35,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:20:35,546 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:20:35,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:20:35,547 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:20:35,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:20:35,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:20:35,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:20:35,548 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:20:35,552 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:20:35,552 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:20:35,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:20:35,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:20:35,553 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:20:35,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:20:35,553 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:20:35,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:20:35,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:20:35,554 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:20:35,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:20:35,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:20:35,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:20:35,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:20:35,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:20:35,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:20:35,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:20:35,557 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:20:35,557 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:20:35,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:20:35,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:20:35,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:20:35,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:20:35,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:20:35,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-10-24 19:20:35,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:20:35,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:20:35,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:20:35,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:20:35,893 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:20:35,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-10-24 19:20:37,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:20:37,672 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:20:37,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-10-24 19:20:37,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4ae93f4/6ade0eb684964b5cb00244298757558a/FLAG20a47b8ac [2024-10-24 19:20:38,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4ae93f4/6ade0eb684964b5cb00244298757558a [2024-10-24 19:20:38,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:20:38,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:20:38,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:20:38,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:20:38,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:20:38,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1bb990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38, skipping insertion in model container [2024-10-24 19:20:38,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:20:38,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:20:38,361 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:20:38,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:20:38,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:20:38,411 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:20:38,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:20:38,476 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:20:38,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38 WrapperNode [2024-10-24 19:20:38,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:20:38,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:20:38,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:20:38,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:20:38,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,553 INFO L138 Inliner]: procedures = 27, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 449 [2024-10-24 19:20:38,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:20:38,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:20:38,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:20:38,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:20:38,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,613 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-24 19:20:38,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:20:38,650 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:20:38,650 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:20:38,650 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:20:38,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (1/1) ... [2024-10-24 19:20:38,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:20:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:20:38,688 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) [2024-10-24 19:20:38,694 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 [2024-10-24 19:20:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:20:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:20:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:20:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:20:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:20:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 19:20:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 19:20:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:20:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:20:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:20:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:20:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:20:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:20:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:20:38,733 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:20:38,864 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:20:38,866 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:20:39,837 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:20:39,837 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:20:40,458 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:20:40,458 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 19:20:40,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:20:40 BoogieIcfgContainer [2024-10-24 19:20:40,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:20:40,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:20:40,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:20:40,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:20:40,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:20:38" (1/3) ... [2024-10-24 19:20:40,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:20:40, skipping insertion in model container [2024-10-24 19:20:40,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:20:38" (2/3) ... [2024-10-24 19:20:40,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:20:40, skipping insertion in model container [2024-10-24 19:20:40,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:20:40" (3/3) ... [2024-10-24 19:20:40,468 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-10-24 19:20:40,484 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:20:40,485 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-10-24 19:20:40,485 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:20:40,604 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 19:20:40,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 102 transitions, 232 flow [2024-10-24 19:20:40,687 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-10-24 19:20:40,688 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 19:20:40,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 98 events. 12/98 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-24 19:20:40,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 102 transitions, 232 flow [2024-10-24 19:20:40,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 97 transitions, 218 flow [2024-10-24 19:20:40,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:20:40,716 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;@28e428e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:20:40,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-10-24 19:20:40,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:20:40,720 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:20:40,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:20:40,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:20:40,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:20:40,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-10-24 19:20:40,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:20:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1379628, now seen corresponding path program 1 times [2024-10-24 19:20:40,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:20:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341765655] [2024-10-24 19:20:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:20:40,739 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 [2024-10-24 19:20:40,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:20:40,742 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) [2024-10-24 19:20:40,763 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 [2024-10-24 19:20:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:20:40,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:20:40,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:20:40,939 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 [2024-10-24 19:20:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:20:40,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:20:40,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:20:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341765655] [2024-10-24 19:20:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341765655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:20:40,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:20:40,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:20:40,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552244329] [2024-10-24 19:20:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:20:40,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:20:40,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:20:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:20:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:20:41,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 102 [2024-10-24 19:20:41,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:20:41,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:20:41,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 102 [2024-10-24 19:20:41,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:21:06,881 INFO L124 PetriNetUnfolderBase]: 235390/304213 cut-off events. [2024-10-24 19:21:06,882 INFO L125 PetriNetUnfolderBase]: For 7027/7027 co-relation queries the response was YES. [2024-10-24 19:21:07,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615824 conditions, 304213 events. 235390/304213 cut-off events. For 7027/7027 co-relation queries the response was YES. Maximal size of possible extension queue 9609. Compared 1919286 event pairs, 214316 based on Foata normal form. 1/175618 useless extension candidates. Maximal degree in co-relation 602897. Up to 304010 conditions per place. [2024-10-24 19:21:08,573 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 76 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-10-24 19:21:08,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 354 flow [2024-10-24 19:21:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:21:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:21:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-10-24 19:21:08,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-10-24 19:21:08,744 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 218 flow. Second operand 3 states and 129 transitions. [2024-10-24 19:21:08,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 354 flow [2024-10-24 19:21:09,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 338 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-24 19:21:09,197 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 186 flow [2024-10-24 19:21:09,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-10-24 19:21:09,212 INFO L277 CegarLoopForPetriNet]: 98 programPoint places, -12 predicate places. [2024-10-24 19:21:09,212 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 186 flow [2024-10-24 19:21:09,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:21:09,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:21:09,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:21:09,224 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 [2024-10-24 19:21:09,414 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 [2024-10-24 19:21:09,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-10-24 19:21:09,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:21:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1379629, now seen corresponding path program 1 times [2024-10-24 19:21:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:21:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719787610] [2024-10-24 19:21:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:21:09,419 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 [2024-10-24 19:21:09,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:21:09,424 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) [2024-10-24 19:21:09,427 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 [2024-10-24 19:21:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:21:09,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:21:09,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:21:09,611 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 [2024-10-24 19:21:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:21:09,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:21:09,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:21:09,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719787610] [2024-10-24 19:21:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719787610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:21:09,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:21:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:21:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233059228] [2024-10-24 19:21:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:21:09,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:21:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:21:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:21:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:21:09,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 102 [2024-10-24 19:21:09,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 19:21:09,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:21:09,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 102 [2024-10-24 19:21:09,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand