./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 22:30:54,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:30:54,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:30:54,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:30:54,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:30:54,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:30:54,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:30:54,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:30:54,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:30:54,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:30:54,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:30:54,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:30:54,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:30:54,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:30:54,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:30:54,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:30:54,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:30:54,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:30:54,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:30:54,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:30:54,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:30:54,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:30:54,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:30:54,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:30:54,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:30:54,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:30:54,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:30:54,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:30:54,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:30:54,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:30:54,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:30:54,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:30:54,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:30:54,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:30:54,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:30:54,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:30:54,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:30:54,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:30:54,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:30:54,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:30:54,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:30:54,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 22:30:54,466 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:30:54,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:30:54,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:30:54,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:30:54,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:30:54,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:30:54,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:30:54,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:30:54,468 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:30:54,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:30:54,469 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:30:54,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:30:54,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:30:54,471 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:30:54,471 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:30:54,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:30:54,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:30:54,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:30:54,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:54,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:30:54,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:30:54,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 22:30:54,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 22:30:54,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:30:54,472 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:30:54,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:30:54,473 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:30:54,473 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-02-18 22:30:54,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:30:54,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:30:54,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:30:54,715 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:30:54,715 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:30:54,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 22:30:55,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:30:55,808 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:30:55,816 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 22:30:55,828 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150714186/25b76919b90745a5bc690059a17031d7/FLAG99243d492 [2023-02-18 22:30:55,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150714186/25b76919b90745a5bc690059a17031d7 [2023-02-18 22:30:55,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:30:55,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:30:55,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:55,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:30:55,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:30:55,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:55" (1/1) ... [2023-02-18 22:30:55,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3b43ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:55, skipping insertion in model container [2023-02-18 22:30:55,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:55" (1/1) ... [2023-02-18 22:30:55,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:30:55,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:56,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:56,204 ERROR L326 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) [2023-02-18 22:30:56,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@407488c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:56, skipping insertion in model container [2023-02-18 22:30:56,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:56,206 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 22:30:56,207 INFO L158 Benchmark]: Toolchain (without parser) took 362.44ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 84.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 22:30:56,208 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 22:30:56,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.97ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 84.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 22:30:56,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 136.3MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.97ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 84.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-memsafety/fillarray1.i -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.graphml --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 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 22:30:57,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:30:57,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:30:57,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:30:57,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:30:57,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:30:57,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:30:57,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:30:57,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:30:57,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:30:57,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:30:57,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:30:57,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:30:57,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:30:57,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:30:57,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:30:57,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:30:57,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:30:57,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:30:57,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:30:57,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:30:57,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:30:57,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:30:57,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:30:57,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:30:57,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:30:57,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:30:57,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:30:57,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:30:57,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:30:57,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:30:57,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:30:57,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:30:57,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:30:57,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:30:57,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:30:57,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:30:57,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:30:57,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:30:57,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:30:57,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:30:57,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 22:30:57,882 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:30:57,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:30:57,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:30:57,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:30:57,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:30:57,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:30:57,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:30:57,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:30:57,885 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:30:57,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:30:57,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 22:30:57,887 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:30:57,888 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:30:57,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:30:57,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:30:57,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:30:57,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:57,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:30:57,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:30:57,889 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 22:30:57,890 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:30:57,890 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-02-18 22:30:58,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:30:58,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:30:58,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:30:58,175 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:30:58,177 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:30:58,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 22:30:59,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:30:59,272 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:30:59,276 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-02-18 22:30:59,285 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fd75a9a/c5fff09d88a74f54b2117ade8977588b/FLAGe02e17380 [2023-02-18 22:30:59,296 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fd75a9a/c5fff09d88a74f54b2117ade8977588b [2023-02-18 22:30:59,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:30:59,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:30:59,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:59,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:30:59,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:30:59,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317acc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59, skipping insertion in model container [2023-02-18 22:30:59,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:30:59,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:59,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:59,703 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 22:30:59,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:59,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:59,755 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 22:30:59,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:59,842 INFO L208 MainTranslator]: Completed translation [2023-02-18 22:30:59,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59 WrapperNode [2023-02-18 22:30:59,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:59,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 22:30:59,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 22:30:59,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 22:30:59,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,889 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-02-18 22:30:59,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 22:30:59,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 22:30:59,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 22:30:59,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 22:30:59,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,927 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 22:30:59,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 22:30:59,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 22:30:59,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 22:30:59,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (1/1) ... [2023-02-18 22:30:59,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:30:59,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 22:30:59,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 22:30:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-02-18 22:30:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-02-18 22:30:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-02-18 22:30:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-02-18 22:30:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 22:30:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 22:30:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 22:30:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 22:30:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 22:30:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 22:30:59,992 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-18 22:31:00,108 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 22:31:00,125 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 22:31:00,345 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 22:31:00,354 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 22:31:00,355 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 22:31:00,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:31:00 BoogieIcfgContainer [2023-02-18 22:31:00,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 22:31:00,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 22:31:00,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 22:31:00,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 22:31:00,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:30:59" (1/3) ... [2023-02-18 22:31:00,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5bf968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:31:00, skipping insertion in model container [2023-02-18 22:31:00,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:59" (2/3) ... [2023-02-18 22:31:00,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5bf968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:31:00, skipping insertion in model container [2023-02-18 22:31:00,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:31:00" (3/3) ... [2023-02-18 22:31:00,363 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2023-02-18 22:31:00,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 22:31:00,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-18 22:31:00,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-18 22:31:00,441 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-02-18 22:31:00,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2023-02-18 22:31:00,516 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2023-02-18 22:31:00,517 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-02-18 22:31:00,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 105 transitions, 220 flow [2023-02-18 22:31:00,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 103 transitions, 212 flow [2023-02-18 22:31:00,525 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-18 22:31:00,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 103 transitions, 212 flow [2023-02-18 22:31:00,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 103 transitions, 212 flow [2023-02-18 22:31:00,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 212 flow [2023-02-18 22:31:00,565 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2023-02-18 22:31:00,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:00,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-02-18 22:31:00,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 2546 [2023-02-18 22:31:00,662 INFO L134 LiptonReduction]: Checked pairs total: 7730 [2023-02-18 22:31:00,662 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-02-18 22:31:00,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 22:31:00,688 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2f06ed20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 22:31:00,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-02-18 22:31:00,691 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-02-18 22:31:00,691 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:00,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:00,692 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-18 22:31:00,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 400, now seen corresponding path program 1 times [2023-02-18 22:31:00,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:00,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690410454] [2023-02-18 22:31:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:00,707 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 [2023-02-18 22:31:00,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:00,710 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) [2023-02-18 22:31:00,711 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 [2023-02-18 22:31:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:00,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 22:31:00,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:00,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:00,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:00,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690410454] [2023-02-18 22:31:00,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690410454] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:00,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:00,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-18 22:31:00,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589830436] [2023-02-18 22:31:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 22:31:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 22:31:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 22:31:00,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 190 [2023-02-18 22:31:00,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-02-18 22:31:00,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:00,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 190 [2023-02-18 22:31:00,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:01,022 INFO L130 PetriNetUnfolder]: 569/1096 cut-off events. [2023-02-18 22:31:01,023 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-02-18 22:31:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 1096 events. 569/1096 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6245 event pairs, 476 based on Foata normal form. 95/890 useless extension candidates. Maximal degree in co-relation 1938. Up to 840 conditions per place. [2023-02-18 22:31:01,038 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 25 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-02-18 22:31:01,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 134 flow [2023-02-18 22:31:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 22:31:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-18 22:31:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2023-02-18 22:31:01,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5973684210526315 [2023-02-18 22:31:01,057 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2023-02-18 22:31:01,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2023-02-18 22:31:01,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:01,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2023-02-18 22:31:01,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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) [2023-02-18 22:31:01,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-02-18 22:31:01,069 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-02-18 22:31:01,070 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 92 flow. Second operand 2 states and 227 transitions. [2023-02-18 22:31:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 134 flow [2023-02-18 22:31:01,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:01,074 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 82 flow [2023-02-18 22:31:01,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-02-18 22:31:01,080 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 22:31:01,081 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 82 flow [2023-02-18 22:31:01,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 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) [2023-02-18 22:31:01,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:01,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-02-18 22:31:01,088 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 (2)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:01,285 WARN L477 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 [2023-02-18 22:31:01,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 12526, now seen corresponding path program 1 times [2023-02-18 22:31:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:01,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651921753] [2023-02-18 22:31:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:01,286 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 [2023-02-18 22:31:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:01,287 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) [2023-02-18 22:31:01,290 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 [2023-02-18 22:31:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:31:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:01,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:01,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651921753] [2023-02-18 22:31:01,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651921753] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:01,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:01,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:01,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034451043] [2023-02-18 22:31:01,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:01,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:01,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:01,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:01,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 190 [2023-02-18 22:31:01,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-02-18 22:31:01,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:01,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 190 [2023-02-18 22:31:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:01,533 INFO L130 PetriNetUnfolder]: 717/1315 cut-off events. [2023-02-18 22:31:01,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:01,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1315 events. 717/1315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7454 event pairs, 547 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 2406. Up to 957 conditions per place. [2023-02-18 22:31:01,541 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 37 selfloop transitions, 1 changer transitions 2/52 dead transitions. [2023-02-18 22:31:01,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 188 flow [2023-02-18 22:31:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-02-18 22:31:01,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2023-02-18 22:31:01,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-02-18 22:31:01,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-02-18 22:31:01,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:01,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-02-18 22:31:01,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:31:01,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:01,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:01,554 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 82 flow. Second operand 3 states and 308 transitions. [2023-02-18 22:31:01,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 188 flow [2023-02-18 22:31:01,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-18 22:31:01,556 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 85 flow [2023-02-18 22:31:01,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-02-18 22:31:01,557 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-02-18 22:31:01,557 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 85 flow [2023-02-18 22:31:01,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-02-18 22:31:01,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:01,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 22:31:01,565 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 [2023-02-18 22:31:01,764 WARN L477 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 [2023-02-18 22:31:01,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash 394584, now seen corresponding path program 1 times [2023-02-18 22:31:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:01,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448715175] [2023-02-18 22:31:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:01,765 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 [2023-02-18 22:31:01,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:01,767 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) [2023-02-18 22:31:01,767 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 [2023-02-18 22:31:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:01,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 22:31:01,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:01,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:01,869 INFO L350 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 2 case distinctions, treesize of input 12 treesize of output 60 [2023-02-18 22:31:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:01,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:01,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448715175] [2023-02-18 22:31:01,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448715175] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:01,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:01,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275132391] [2023-02-18 22:31:01,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:01,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:01,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-02-18 22:31:01,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 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) [2023-02-18 22:31:01,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:01,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-02-18 22:31:01,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:02,082 INFO L130 PetriNetUnfolder]: 621/1134 cut-off events. [2023-02-18 22:31:02,083 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-02-18 22:31:02,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 1134 events. 621/1134 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6510 event pairs, 258 based on Foata normal form. 0/844 useless extension candidates. Maximal degree in co-relation 2177. Up to 477 conditions per place. [2023-02-18 22:31:02,089 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 34 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-02-18 22:31:02,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 179 flow [2023-02-18 22:31:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-02-18 22:31:02,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2023-02-18 22:31:02,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-02-18 22:31:02,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-02-18 22:31:02,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:02,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-02-18 22:31:02,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-02-18 22:31:02,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,094 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 85 flow. Second operand 3 states and 310 transitions. [2023-02-18 22:31:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 179 flow [2023-02-18 22:31:02,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:02,099 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 83 flow [2023-02-18 22:31:02,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-02-18 22:31:02,100 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-02-18 22:31:02,100 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 83 flow [2023-02-18 22:31:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 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) [2023-02-18 22:31:02,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:02,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 22:31:02,108 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 [2023-02-18 22:31:02,307 WARN L477 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 [2023-02-18 22:31:02,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:02,309 INFO L85 PathProgramCache]: Analyzing trace with hash 394583, now seen corresponding path program 1 times [2023-02-18 22:31:02,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:02,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427835176] [2023-02-18 22:31:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:02,309 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 [2023-02-18 22:31:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:02,310 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) [2023-02-18 22:31:02,312 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 [2023-02-18 22:31:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:02,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 22:31:02,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:02,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:02,392 INFO L350 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 2 case distinctions, treesize of input 12 treesize of output 60 [2023-02-18 22:31:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:02,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:02,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427835176] [2023-02-18 22:31:02,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427835176] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:02,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:02,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560282979] [2023-02-18 22:31:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:02,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 190 [2023-02-18 22:31:02,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-02-18 22:31:02,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:02,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 190 [2023-02-18 22:31:02,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:02,549 INFO L130 PetriNetUnfolder]: 543/1039 cut-off events. [2023-02-18 22:31:02,550 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-02-18 22:31:02,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 1039 events. 543/1039 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5949 event pairs, 324 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1953. Up to 577 conditions per place. [2023-02-18 22:31:02,554 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 32 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-02-18 22:31:02,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 173 flow [2023-02-18 22:31:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-02-18 22:31:02,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561403508771929 [2023-02-18 22:31:02,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-02-18 22:31:02,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-02-18 22:31:02,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:02,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-02-18 22:31:02,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-02-18 22:31:02,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,559 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 83 flow. Second operand 3 states and 317 transitions. [2023-02-18 22:31:02,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 173 flow [2023-02-18 22:31:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:02,561 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 81 flow [2023-02-18 22:31:02,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-02-18 22:31:02,562 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-02-18 22:31:02,562 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 81 flow [2023-02-18 22:31:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2023-02-18 22:31:02,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:02,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:02,572 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 (5)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:02,770 WARN L477 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 [2023-02-18 22:31:02,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 379205335, now seen corresponding path program 1 times [2023-02-18 22:31:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897267425] [2023-02-18 22:31:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:02,771 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 [2023-02-18 22:31:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:02,773 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) [2023-02-18 22:31:02,775 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 [2023-02-18 22:31:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:31:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:02,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:02,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:02,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897267425] [2023-02-18 22:31:02,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897267425] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:02,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159389867] [2023-02-18 22:31:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:02,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:02,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 190 [2023-02-18 22:31:02,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-02-18 22:31:02,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:02,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 190 [2023-02-18 22:31:02,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:02,928 INFO L130 PetriNetUnfolder]: 466/878 cut-off events. [2023-02-18 22:31:02,928 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-02-18 22:31:02,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 878 events. 466/878 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4769 event pairs, 395 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 1673. Up to 696 conditions per place. [2023-02-18 22:31:02,932 INFO L137 encePairwiseOnDemand]: 188/190 looper letters, 20 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-02-18 22:31:02,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 121 flow [2023-02-18 22:31:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-02-18 22:31:02,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5385964912280702 [2023-02-18 22:31:02,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-02-18 22:31:02,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-02-18 22:31:02,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:02,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-02-18 22:31:02,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2023-02-18 22:31:02,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:02,936 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 81 flow. Second operand 3 states and 307 transitions. [2023-02-18 22:31:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 121 flow [2023-02-18 22:31:02,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 117 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:02,938 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 77 flow [2023-02-18 22:31:02,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-02-18 22:31:02,939 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 22:31:02,940 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 77 flow [2023-02-18 22:31:02,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-02-18 22:31:02,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:02,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:02,948 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 (6)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:03,147 WARN L477 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 [2023-02-18 22:31:03,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash 379205342, now seen corresponding path program 1 times [2023-02-18 22:31:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:03,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020025071] [2023-02-18 22:31:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:03,149 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 [2023-02-18 22:31:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:03,150 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) [2023-02-18 22:31:03,153 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 [2023-02-18 22:31:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:03,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 22:31:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:03,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:03,224 INFO L350 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 3 case distinctions, treesize of input 22 treesize of output 67 [2023-02-18 22:31:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:03,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:03,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:03,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020025071] [2023-02-18 22:31:03,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020025071] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:03,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:03,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:03,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508677481] [2023-02-18 22:31:03,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:03,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 190 [2023-02-18 22:31:03,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-02-18 22:31:03,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:03,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 190 [2023-02-18 22:31:03,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:03,620 INFO L130 PetriNetUnfolder]: 448/812 cut-off events. [2023-02-18 22:31:03,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 812 events. 448/812 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4311 event pairs, 165 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1565. Up to 477 conditions per place. [2023-02-18 22:31:03,623 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 31 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-02-18 22:31:03,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 165 flow [2023-02-18 22:31:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-02-18 22:31:03,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5491228070175439 [2023-02-18 22:31:03,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-02-18 22:31:03,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-02-18 22:31:03,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:03,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-02-18 22:31:03,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-02-18 22:31:03,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:03,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:03,627 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 77 flow. Second operand 3 states and 313 transitions. [2023-02-18 22:31:03,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 165 flow [2023-02-18 22:31:03,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 22:31:03,629 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 78 flow [2023-02-18 22:31:03,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-02-18 22:31:03,631 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-02-18 22:31:03,631 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 78 flow [2023-02-18 22:31:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2023-02-18 22:31:03,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:03,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:03,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-18 22:31:03,840 WARN L477 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 [2023-02-18 22:31:03,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 379205336, now seen corresponding path program 1 times [2023-02-18 22:31:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:03,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242171867] [2023-02-18 22:31:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:03,842 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 [2023-02-18 22:31:03,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:03,843 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) [2023-02-18 22:31:03,846 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 [2023-02-18 22:31:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:03,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:31:03,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:03,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:03,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242171867] [2023-02-18 22:31:03,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242171867] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:03,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:03,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494537276] [2023-02-18 22:31:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:03,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:03,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 190 [2023-02-18 22:31:03,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-02-18 22:31:03,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:03,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 190 [2023-02-18 22:31:03,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:03,986 INFO L130 PetriNetUnfolder]: 300/580 cut-off events. [2023-02-18 22:31:03,986 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-02-18 22:31:03,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 580 events. 300/580 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2939 event pairs, 253 based on Foata normal form. 42/523 useless extension candidates. Maximal degree in co-relation 1138. Up to 458 conditions per place. [2023-02-18 22:31:03,989 INFO L137 encePairwiseOnDemand]: 188/190 looper letters, 18 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-02-18 22:31:03,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 114 flow [2023-02-18 22:31:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-02-18 22:31:03,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-02-18 22:31:03,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-02-18 22:31:03,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-02-18 22:31:03,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:03,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-02-18 22:31:03,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2023-02-18 22:31:03,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:03,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-02-18 22:31:03,994 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 78 flow. Second operand 3 states and 305 transitions. [2023-02-18 22:31:03,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 114 flow [2023-02-18 22:31:03,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:03,995 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 74 flow [2023-02-18 22:31:03,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-02-18 22:31:03,996 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-02-18 22:31:03,996 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 74 flow [2023-02-18 22:31:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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) [2023-02-18 22:31:03,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:03,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:04,005 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 [2023-02-18 22:31:04,203 WARN L477 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 [2023-02-18 22:31:04,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1142827360, now seen corresponding path program 1 times [2023-02-18 22:31:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:04,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389187627] [2023-02-18 22:31:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:04,205 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 [2023-02-18 22:31:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:04,205 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) [2023-02-18 22:31:04,212 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 [2023-02-18 22:31:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:04,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 22:31:04,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:06,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:06,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:06,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389187627] [2023-02-18 22:31:06,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389187627] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:06,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:06,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 22:31:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195853924] [2023-02-18 22:31:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:06,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 22:31:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 22:31:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2023-02-18 22:31:07,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:09,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:11,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:13,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:15,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:17,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:19,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:21,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:23,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:25,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:27,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:27,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 190 [2023-02-18 22:31:27,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-02-18 22:31:27,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:27,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 190 [2023-02-18 22:31:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:29,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:31,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:33,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:35,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:36,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:38,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 22:31:39,055 INFO L130 PetriNetUnfolder]: 464/760 cut-off events. [2023-02-18 22:31:39,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:39,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 760 events. 464/760 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3586 event pairs, 62 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 1543. Up to 294 conditions per place. [2023-02-18 22:31:39,058 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 60 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-02-18 22:31:39,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 74 transitions, 284 flow [2023-02-18 22:31:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 22:31:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-02-18 22:31:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2023-02-18 22:31:39,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2023-02-18 22:31:39,061 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2023-02-18 22:31:39,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2023-02-18 22:31:39,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:39,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2023-02-18 22:31:39,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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) [2023-02-18 22:31:39,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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) [2023-02-18 22:31:39,064 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 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) [2023-02-18 22:31:39,064 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 74 flow. Second operand 6 states and 515 transitions. [2023-02-18 22:31:39,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 74 transitions, 284 flow [2023-02-18 22:31:39,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 22:31:39,066 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 79 flow [2023-02-18 22:31:39,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-02-18 22:31:39,068 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-02-18 22:31:39,068 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 79 flow [2023-02-18 22:31:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-02-18 22:31:39,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:39,068 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:39,076 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 [2023-02-18 22:31:39,276 WARN L477 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 [2023-02-18 22:31:39,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1816875148, now seen corresponding path program 1 times [2023-02-18 22:31:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:39,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647799919] [2023-02-18 22:31:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:39,277 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 [2023-02-18 22:31:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:39,278 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) [2023-02-18 22:31:39,280 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 [2023-02-18 22:31:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 22:31:39,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 22:31:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 22:31:39,379 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-18 22:31:39,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 22:31:39,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-02-18 22:31:39,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-02-18 22:31:39,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-02-18 22:31:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-02-18 22:31:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-02-18 22:31:39,403 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 (10)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-02-18 22:31:39,584 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:39,589 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-02-18 22:31:39,589 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 22:31:39,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 10:31:39 BasicIcfg [2023-02-18 22:31:39,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 22:31:39,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 22:31:39,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 22:31:39,620 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 22:31:39,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:31:00" (3/4) ... [2023-02-18 22:31:39,622 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 22:31:39,661 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 22:31:39,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 22:31:39,662 INFO L158 Benchmark]: Toolchain (without parser) took 40363.81ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 44.3MB in the beginning and 86.0MB in the end (delta: -41.7MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,662 INFO L158 Benchmark]: CDTParser took 0.80ms. Allocated memory is still 56.6MB. Free memory is still 32.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 22:31:39,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.64ms. Allocated memory is still 69.2MB. Free memory was 43.9MB in the beginning and 41.6MB in the end (delta: 2.3MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,663 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.60ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 39.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,663 INFO L158 Benchmark]: Boogie Preprocessor took 45.30ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 37.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,663 INFO L158 Benchmark]: RCFGBuilder took 419.92ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 37.5MB in the beginning and 55.1MB in the end (delta: -17.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,664 INFO L158 Benchmark]: TraceAbstraction took 39261.35ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 54.6MB in the beginning and 90.2MB in the end (delta: -35.6MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,664 INFO L158 Benchmark]: Witness Printer took 41.74ms. Allocated memory is still 146.8MB. Free memory was 90.2MB in the beginning and 86.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 22:31:39,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80ms. Allocated memory is still 56.6MB. Free memory is still 32.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.64ms. Allocated memory is still 69.2MB. Free memory was 43.9MB in the beginning and 41.6MB in the end (delta: 2.3MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.60ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 39.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.30ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 37.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 419.92ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 37.5MB in the beginning and 55.1MB in the end (delta: -17.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 39261.35ms. Allocated memory was 83.9MB in the beginning and 146.8MB in the end (delta: 62.9MB). Free memory was 54.6MB in the beginning and 90.2MB in the end (delta: -35.6MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * Witness Printer took 41.74ms. Allocated memory is still 146.8MB. Free memory was 90.2MB in the beginning and 86.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 101 PlacesBefore, 43 PlacesAfterwards, 103 TransitionsBefore, 43 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 7730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2462, independent: 2218, independent conditional: 0, independent unconditional: 2218, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1057, independent: 1021, independent conditional: 0, independent unconditional: 1021, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2462, independent: 1197, independent conditional: 0, independent unconditional: 1197, dependent: 208, dependent conditional: 0, dependent unconditional: 208, unknown: 1057, unknown conditional: 0, unknown unconditional: 1057] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 113, Positive conditional cache size: 0, Positive unconditional cache size: 113, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={3:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=1, j=2, size=2, x=1, y=1, z=0] [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 435 SdHoareTripleChecker+Valid, 33.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 33.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 750 IncrementalHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 41 mSDtfsCounter, 750 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 24 ConstructedInterpolants, 11 QuantifiedInterpolants, 1376 SizeOfPredicates, 8 NumberOfNonLiveVariables, 529 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-18 22:31:39,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)