./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-more-vector-add.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-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:24:32,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:24:32,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:24:32,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:24:32,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:24:32,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:24:32,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:24:32,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:24:32,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:24:32,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:24:32,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:24:32,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:24:32,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:24:32,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:24:32,489 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:24:32,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:24:32,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:24:32,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:24:32,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:24:32,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:24:32,491 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:24:32,495 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:24:32,495 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:24:32,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:24:32,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:24:32,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:24:32,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:24:32,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:24:32,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:24:32,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:24:32,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:24:32,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:24:32,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:24:32,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:24:32,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:24:32,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:24:32,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:24:32,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:24:32,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:24:32,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:24:32,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:24:32,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:24:32,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-24 19:24:32,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:24:32,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:24:32,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:24:32,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:24:32,827 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:24:32,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-24 19:24:34,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:24:34,400 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:24:34,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-24 19:24:34,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d796ec38/aeeedc4ff96a4a2ab3500de57303d941/FLAG2d0c75eb8 [2024-10-24 19:24:34,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d796ec38/aeeedc4ff96a4a2ab3500de57303d941 [2024-10-24 19:24:34,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:24:34,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:24:34,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:34,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:24:34,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:24:34,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:34" (1/1) ... [2024-10-24 19:24:34,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50304516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:34, skipping insertion in model container [2024-10-24 19:24:34,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:34" (1/1) ... [2024-10-24 19:24:34,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:34,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:34,660 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 19:24:34,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c64db56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:34, skipping insertion in model container [2024-10-24 19:24:34,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:34,661 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:24:34,662 INFO L158 Benchmark]: Toolchain (without parser) took 221.76ms. Allocated memory is still 153.1MB. Free memory was 113.4MB in the beginning and 101.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:24:34,663 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:24:34,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.85ms. Allocated memory is still 153.1MB. Free memory was 112.7MB in the beginning and 101.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:24:34,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.85ms. Allocated memory is still 153.1MB. Free memory was 112.7MB in the beginning and 101.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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-more-vector-add.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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:24:36,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:24:36,854 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:24:36,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:24:36,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:24:36,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:24:36,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:24:36,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:24:36,900 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:24:36,900 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:24:36,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:24:36,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:24:36,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:24:36,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:24:36,902 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:24:36,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:24:36,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:24:36,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:24:36,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:24:36,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:24:36,904 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:24:36,905 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:24:36,909 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:24:36,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:24:36,910 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:24:36,910 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:24:36,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:24:36,910 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:24:36,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:24:36,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:24:36,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:24:36,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:24:36,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:24:36,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:24:36,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:24:36,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:24:36,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:24:36,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:24:36,917 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:24:36,917 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:24:36,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:24:36,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:24:36,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:24:36,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:24:36,919 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:24:36,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-10-24 19:24:37,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:24:37,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:24:37,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:24:37,242 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:24:37,242 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:24:37,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-24 19:24:38,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:24:39,008 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:24:39,008 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-10-24 19:24:39,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9320a5cd/3e9485c404aa4ccc9c4006aec642f148/FLAG581fa4332 [2024-10-24 19:24:39,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9320a5cd/3e9485c404aa4ccc9c4006aec642f148 [2024-10-24 19:24:39,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:24:39,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:24:39,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:39,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:24:39,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:24:39,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529ae63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39, skipping insertion in model container [2024-10-24 19:24:39,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:39,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:39,688 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:24:39,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:24:39,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:39,729 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:24:39,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:24:39,786 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:24:39,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39 WrapperNode [2024-10-24 19:24:39,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:24:39,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:24:39,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:24:39,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:24:39,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,843 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 184 [2024-10-24 19:24:39,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:24:39,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:24:39,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:24:39,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:24:39,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,889 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-10-24 19:24:39,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:24:39,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:24:39,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:24:39,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:24:39,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (1/1) ... [2024-10-24 19:24:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:24:39,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:24:39,956 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 19:24:39,958 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 19:24:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:24:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:24:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:24:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:24:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:24:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:24:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:24:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:24:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:24:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:24:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:24:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:24:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:24:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:24:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:24:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:24:40,023 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 19:24:40,148 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:24:40,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:24:40,831 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:24:40,832 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:24:41,133 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:24:41,134 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-24 19:24:41,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:24:41 BoogieIcfgContainer [2024-10-24 19:24:41,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:24:41,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:24:41,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:24:41,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:24:41,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:24:39" (1/3) ... [2024-10-24 19:24:41,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c23183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:24:41, skipping insertion in model container [2024-10-24 19:24:41,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:24:39" (2/3) ... [2024-10-24 19:24:41,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c23183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:24:41, skipping insertion in model container [2024-10-24 19:24:41,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:24:41" (3/3) ... [2024-10-24 19:24:41,145 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-10-24 19:24:41,161 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:24:41,162 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-24 19:24:41,163 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:24:41,234 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:24:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 181 flow [2024-10-24 19:24:41,306 INFO L124 PetriNetUnfolderBase]: 7/77 cut-off events. [2024-10-24 19:24:41,306 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:24:41,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 7/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-24 19:24:41,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 181 flow [2024-10-24 19:24:41,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 170 flow [2024-10-24 19:24:41,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:24:41,337 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;@20b76d43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:24:41,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-24 19:24:41,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:24:41,343 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:24:41,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:24:41,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:41,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:24:41,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:24:41,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 748853, now seen corresponding path program 1 times [2024-10-24 19:24:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359110517] [2024-10-24 19:24:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:41,363 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 19:24:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:41,366 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 19:24:41,367 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 19:24:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:41,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:24:41,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:41,496 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 19:24:41,511 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 19:24:41,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:41,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359110517] [2024-10-24 19:24:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359110517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:41,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:24:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548652580] [2024-10-24 19:24:41,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:41,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:24:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:41,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:24:41,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:24:41,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-24 19:24:41,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 19:24:41,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:41,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-24 19:24:41,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:41,911 INFO L124 PetriNetUnfolderBase]: 203/513 cut-off events. [2024-10-24 19:24:41,912 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-24 19:24:41,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 513 events. 203/513 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2754 event pairs, 124 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 732. Up to 294 conditions per place. [2024-10-24 19:24:41,920 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 31 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-10-24 19:24:41,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 224 flow [2024-10-24 19:24:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:24:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:24:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-10-24 19:24:41,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-24 19:24:41,933 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 170 flow. Second operand 3 states and 161 transitions. [2024-10-24 19:24:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 224 flow [2024-10-24 19:24:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 212 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:24:41,940 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 150 flow [2024-10-24 19:24:41,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-10-24 19:24:41,946 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -10 predicate places. [2024-10-24 19:24:41,946 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 150 flow [2024-10-24 19:24:41,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 19:24:41,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:41,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:24:41,951 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 19:24:42,149 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 19:24:42,150 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:24:42,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 748854, now seen corresponding path program 1 times [2024-10-24 19:24:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776173906] [2024-10-24 19:24:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:42,152 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 19:24:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:42,155 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 19:24:42,157 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 19:24:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:42,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:24:42,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:42,259 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 19:24:42,357 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 19:24:42,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:42,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776173906] [2024-10-24 19:24:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776173906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:24:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027398326] [2024-10-24 19:24:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:42,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:24:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:24:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:24:42,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-24 19:24:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 19:24:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:42,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-24 19:24:42,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:42,992 INFO L124 PetriNetUnfolderBase]: 207/525 cut-off events. [2024-10-24 19:24:42,993 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:24:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 525 events. 207/525 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2791 event pairs, 124 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 801. Up to 311 conditions per place. [2024-10-24 19:24:43,000 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-10-24 19:24:43,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 274 flow [2024-10-24 19:24:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:24:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:24:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-24 19:24:43,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678125 [2024-10-24 19:24:43,004 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 150 flow. Second operand 4 states and 217 transitions. [2024-10-24 19:24:43,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 274 flow [2024-10-24 19:24:43,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:24:43,007 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 254 flow [2024-10-24 19:24:43,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-10-24 19:24:43,008 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2024-10-24 19:24:43,008 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 254 flow [2024-10-24 19:24:43,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 19:24:43,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:43,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:24:43,013 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 (3)] Ended with exit code 0 [2024-10-24 19:24:43,211 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 [2024-10-24 19:24:43,212 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:24:43,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 719672954, now seen corresponding path program 1 times [2024-10-24 19:24:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139521031] [2024-10-24 19:24:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:43,214 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 19:24:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:43,217 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) [2024-10-24 19:24:43,219 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 [2024-10-24 19:24:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:43,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:24:43,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:43,305 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 19:24:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:43,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:43,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139521031] [2024-10-24 19:24:43,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139521031] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:43,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:24:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533023659] [2024-10-24 19:24:43,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:43,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:24:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:24:43,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:24:44,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-24 19:24:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 19:24:44,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:44,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-24 19:24:44,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:47,278 INFO L124 PetriNetUnfolderBase]: 219/561 cut-off events. [2024-10-24 19:24:47,278 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-24 19:24:47,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 561 events. 219/561 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3041 event pairs, 124 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 818. Up to 314 conditions per place. [2024-10-24 19:24:47,284 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 36 selfloop transitions, 49 changer transitions 0/118 dead transitions. [2024-10-24 19:24:47,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 586 flow [2024-10-24 19:24:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:24:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:24:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 507 transitions. [2024-10-24 19:24:47,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63375 [2024-10-24 19:24:47,289 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 254 flow. Second operand 10 states and 507 transitions. [2024-10-24 19:24:47,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 586 flow [2024-10-24 19:24:47,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 118 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:24:47,294 INFO L231 Difference]: Finished difference. Result has 85 places, 118 transitions, 580 flow [2024-10-24 19:24:47,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=580, PETRI_PLACES=85, PETRI_TRANSITIONS=118} [2024-10-24 19:24:47,295 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2024-10-24 19:24:47,295 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 118 transitions, 580 flow [2024-10-24 19:24:47,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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 19:24:47,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:47,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:24:47,301 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 (4)] Ended with exit code 0 [2024-10-24 19:24:47,496 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 [2024-10-24 19:24:47,497 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:24:47,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2088541764, now seen corresponding path program 1 times [2024-10-24 19:24:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501828389] [2024-10-24 19:24:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:24:47,499 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 19:24:47,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:47,502 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) [2024-10-24 19:24:47,503 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 [2024-10-24 19:24:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:24:47,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:24:47,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:47,658 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 19:24:47,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:24:47,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:47,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501828389] [2024-10-24 19:24:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501828389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:24:47,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:24:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:24:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629398603] [2024-10-24 19:24:47,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:24:47,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:24:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:47,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:24:47,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:24:47,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-24 19:24:47,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 118 transitions, 580 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 19:24:47,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:47,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-24 19:24:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:24:48,131 INFO L124 PetriNetUnfolderBase]: 450/1109 cut-off events. [2024-10-24 19:24:48,132 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-10-24 19:24:48,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 1109 events. 450/1109 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6338 event pairs, 248 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 1911. Up to 418 conditions per place. [2024-10-24 19:24:48,142 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 88 selfloop transitions, 24 changer transitions 1/149 dead transitions. [2024-10-24 19:24:48,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 886 flow [2024-10-24 19:24:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:24:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:24:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 346 transitions. [2024-10-24 19:24:48,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-10-24 19:24:48,145 INFO L175 Difference]: Start difference. First operand has 85 places, 118 transitions, 580 flow. Second operand 6 states and 346 transitions. [2024-10-24 19:24:48,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 886 flow [2024-10-24 19:24:48,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 757 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-10-24 19:24:48,156 INFO L231 Difference]: Finished difference. Result has 90 places, 123 transitions, 568 flow [2024-10-24 19:24:48,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=90, PETRI_TRANSITIONS=123} [2024-10-24 19:24:48,157 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-10-24 19:24:48,158 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 123 transitions, 568 flow [2024-10-24 19:24:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 19:24:48,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:24:48,159 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:24:48,164 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 [2024-10-24 19:24:48,359 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 [2024-10-24 19:24:48,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:24:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:24:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1905560646, now seen corresponding path program 2 times [2024-10-24 19:24:48,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:24:48,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044433715] [2024-10-24 19:24:48,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:24:48,361 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 19:24:48,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:24:48,364 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) [2024-10-24 19:24:48,365 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 [2024-10-24 19:24:48,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:24:48,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:24:48,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:24:48,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:24:48,449 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 19:24:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:48,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:24:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:24:49,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:24:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044433715] [2024-10-24 19:24:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044433715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:24:49,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:24:49,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:24:49,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509615643] [2024-10-24 19:24:49,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:24:49,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:24:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:24:49,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:24:49,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:24:52,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2024-10-24 19:24:52,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 123 transitions, 568 flow. Second operand has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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 19:24:52,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:24:52,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2024-10-24 19:24:52,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:06,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:25:12,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:25:14,762 INFO L124 PetriNetUnfolderBase]: 415/1188 cut-off events. [2024-10-24 19:25:14,762 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-10-24 19:25:14,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2386 conditions, 1188 events. 415/1188 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7903 event pairs, 248 based on Foata normal form. 24/895 useless extension candidates. Maximal degree in co-relation 2000. Up to 585 conditions per place. [2024-10-24 19:25:14,768 INFO L140 encePairwiseOnDemand]: 63/80 looper letters, 40 selfloop transitions, 122 changer transitions 0/195 dead transitions. [2024-10-24 19:25:14,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 195 transitions, 1300 flow [2024-10-24 19:25:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:25:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:25:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1083 transitions. [2024-10-24 19:25:14,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153409090909091 [2024-10-24 19:25:14,772 INFO L175 Difference]: Start difference. First operand has 90 places, 123 transitions, 568 flow. Second operand 22 states and 1083 transitions. [2024-10-24 19:25:14,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 195 transitions, 1300 flow [2024-10-24 19:25:14,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 1294 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-24 19:25:14,780 INFO L231 Difference]: Finished difference. Result has 117 places, 195 transitions, 1328 flow [2024-10-24 19:25:14,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1328, PETRI_PLACES=117, PETRI_TRANSITIONS=195} [2024-10-24 19:25:14,781 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-24 19:25:14,781 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 195 transitions, 1328 flow [2024-10-24 19:25:14,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 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 19:25:14,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:14,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:14,787 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 [2024-10-24 19:25:14,982 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 [2024-10-24 19:25:14,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:25:14,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1375548074, now seen corresponding path program 1 times [2024-10-24 19:25:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:14,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137863428] [2024-10-24 19:25:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:14,984 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 19:25:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:14,985 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) [2024-10-24 19:25:14,986 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 [2024-10-24 19:25:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:15,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:25:15,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:15,166 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 19:25:15,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:15,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:15,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137863428] [2024-10-24 19:25:15,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137863428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:15,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:15,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 19:25:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114999195] [2024-10-24 19:25:15,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:15,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 19:25:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 19:25:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:25:15,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-24 19:25:15,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 195 transitions, 1328 flow. Second operand has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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 19:25:15,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:15,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-24 19:25:15,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:15,602 INFO L124 PetriNetUnfolderBase]: 451/1155 cut-off events. [2024-10-24 19:25:15,602 INFO L125 PetriNetUnfolderBase]: For 448/479 co-relation queries the response was YES. [2024-10-24 19:25:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 1155 events. 451/1155 cut-off events. For 448/479 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6923 event pairs, 248 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 2429. Up to 477 conditions per place. [2024-10-24 19:25:15,609 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 137 selfloop transitions, 42 changer transitions 3/218 dead transitions. [2024-10-24 19:25:15,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 218 transitions, 1754 flow [2024-10-24 19:25:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:25:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:25:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 339 transitions. [2024-10-24 19:25:15,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-24 19:25:15,612 INFO L175 Difference]: Start difference. First operand has 117 places, 195 transitions, 1328 flow. Second operand 6 states and 339 transitions. [2024-10-24 19:25:15,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 218 transitions, 1754 flow [2024-10-24 19:25:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 218 transitions, 1444 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-24 19:25:15,622 INFO L231 Difference]: Finished difference. Result has 115 places, 197 transitions, 1118 flow [2024-10-24 19:25:15,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1118, PETRI_PLACES=115, PETRI_TRANSITIONS=197} [2024-10-24 19:25:15,623 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 36 predicate places. [2024-10-24 19:25:15,623 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 197 transitions, 1118 flow [2024-10-24 19:25:15,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.42857142857143) internal successors, (318), 7 states have internal predecessors, (318), 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 19:25:15,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:15,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:15,629 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 (7)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:15,824 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 [2024-10-24 19:25:15,825 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:25:15,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 932352663, now seen corresponding path program 1 times [2024-10-24 19:25:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812340412] [2024-10-24 19:25:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:15,826 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 19:25:15,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:15,827 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) [2024-10-24 19:25:15,828 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 [2024-10-24 19:25:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:15,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:25:15,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:15,989 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 19:25:15,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:15,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:15,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812340412] [2024-10-24 19:25:15,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812340412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:15,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:15,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:25:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358085974] [2024-10-24 19:25:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:15,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:25:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:25:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:25:16,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2024-10-24 19:25:16,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 197 transitions, 1118 flow. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 19:25:16,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:16,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2024-10-24 19:25:16,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:16,429 INFO L124 PetriNetUnfolderBase]: 418/916 cut-off events. [2024-10-24 19:25:16,429 INFO L125 PetriNetUnfolderBase]: For 715/772 co-relation queries the response was YES. [2024-10-24 19:25:16,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 916 events. 418/916 cut-off events. For 715/772 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4532 event pairs, 248 based on Foata normal form. 0/754 useless extension candidates. Maximal degree in co-relation 2230. Up to 461 conditions per place. [2024-10-24 19:25:16,437 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 115 selfloop transitions, 35 changer transitions 29/215 dead transitions. [2024-10-24 19:25:16,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 215 transitions, 1536 flow [2024-10-24 19:25:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:25:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:25:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 336 transitions. [2024-10-24 19:25:16,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-24 19:25:16,443 INFO L175 Difference]: Start difference. First operand has 115 places, 197 transitions, 1118 flow. Second operand 6 states and 336 transitions. [2024-10-24 19:25:16,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 215 transitions, 1536 flow [2024-10-24 19:25:16,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 215 transitions, 1458 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:25:16,454 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 1040 flow [2024-10-24 19:25:16,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-10-24 19:25:16,456 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 40 predicate places. [2024-10-24 19:25:16,456 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 1040 flow [2024-10-24 19:25:16,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 19:25:16,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:16,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:16,462 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 (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:16,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 19:25:16,658 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:25:16,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:16,659 INFO L85 PathProgramCache]: Analyzing trace with hash -720143873, now seen corresponding path program 1 times [2024-10-24 19:25:16,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:16,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640235420] [2024-10-24 19:25:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:16,659 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 19:25:16,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:16,663 INFO L229 MonitoredProcess]: Starting monitored process 9 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 19:25:16,663 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 (9)] Waiting until timeout for monitored process [2024-10-24 19:25:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:16,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:25:16,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:16,800 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 19:25:16,844 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:25:16,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-24 19:25:16,885 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:25:16,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-24 19:25:16,913 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 19:25:16,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-24 19:25:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:25:16,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:16,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640235420] [2024-10-24 19:25:16,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640235420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:16,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49380100] [2024-10-24 19:25:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:16,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:17,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 80 [2024-10-24 19:25:17,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 1040 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 19:25:17,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:17,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 80 [2024-10-24 19:25:17,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:17,294 INFO L124 PetriNetUnfolderBase]: 469/1025 cut-off events. [2024-10-24 19:25:17,295 INFO L125 PetriNetUnfolderBase]: For 476/556 co-relation queries the response was YES. [2024-10-24 19:25:17,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1025 events. 469/1025 cut-off events. For 476/556 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5914 event pairs, 306 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2280. Up to 630 conditions per place. [2024-10-24 19:25:17,303 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 131 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2024-10-24 19:25:17,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 1338 flow [2024-10-24 19:25:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:25:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:25:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-10-24 19:25:17,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-10-24 19:25:17,305 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 1040 flow. Second operand 5 states and 214 transitions. [2024-10-24 19:25:17,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 1338 flow [2024-10-24 19:25:17,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 183 transitions, 1102 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-10-24 19:25:17,313 INFO L231 Difference]: Finished difference. Result has 99 places, 183 transitions, 840 flow [2024-10-24 19:25:17,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=99, PETRI_TRANSITIONS=183} [2024-10-24 19:25:17,315 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2024-10-24 19:25:17,316 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 183 transitions, 840 flow [2024-10-24 19:25:17,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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 19:25:17,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:17,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:17,324 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 (9)] Ended with exit code 0 [2024-10-24 19:25:17,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 19:25:17,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 50 more)] === [2024-10-24 19:25:17,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash -720143872, now seen corresponding path program 1 times [2024-10-24 19:25:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:17,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766692387] [2024-10-24 19:25:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:17,518 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 19:25:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:17,519 INFO L229 MonitoredProcess]: Starting monitored process 10 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 19:25:17,520 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 (10)] Waiting until timeout for monitored process [2024-10-24 19:25:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:17,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 19:25:17,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:17,662 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 19:25:17,678 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 19:25:17,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:25:17,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 19:25:17,855 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:25:17,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-24 19:25:17,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 19:25:17,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-24 19:25:17,944 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 19:25:17,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-24 19:25:18,016 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-10-24 19:25:18,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-10-24 19:25:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 19:25:18,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 19:25:19,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766692387] [2024-10-24 19:25:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766692387] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:19,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:19,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-24 19:25:19,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965626641] [2024-10-24 19:25:19,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:19,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 19:25:19,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 19:25:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-24 19:25:28,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:25:33,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:25:37,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:25:45,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:25:50,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:25:51,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2024-10-24 19:25:51,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 183 transitions, 840 flow. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 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 19:25:51,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:51,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2024-10-24 19:25:51,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:56,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:26:02,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-24 19:26:06,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]