./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 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/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:34:37,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:34:37,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:34:37,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:34:37,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:34:37,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:34:37,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:34:37,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:34:37,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:34:37,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:34:37,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:34:37,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:34:37,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:34:37,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:34:37,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:34:37,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:34:37,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:34:37,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:34:37,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:34:37,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:34:37,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:34:37,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:34:37,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:34:37,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:34:37,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:34:37,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:34:37,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:34:37,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:34:37,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:34:37,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:34:37,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:34:37,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:34:37,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:34:37,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:34:37,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:34:37,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:34:37,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:34:37,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:34:37,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:34:37,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:34:37,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:34:37,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:34:37,376 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:34:37,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:34:37,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:34:37,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:34:37,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:34:37,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:34:37,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:34:37,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:34:37,378 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:34:37,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:34:37,379 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:34:37,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:34:37,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:34:37,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:34:37,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:34:37,382 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:34:37,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:34:37,382 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:34:37,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-15 22:34:37,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:34:37,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:34:37,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:34:37,539 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:34:37,539 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:34:37,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 22:34:38,651 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:34:38,865 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:34:38,866 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 22:34:38,877 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032063617/b1cd8ccf6c8c498f9ede98d0cc5cc7cd/FLAGeb7708a30 [2023-02-15 22:34:38,890 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032063617/b1cd8ccf6c8c498f9ede98d0cc5cc7cd [2023-02-15 22:34:38,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:34:38,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:34:38,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:34:38,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:34:38,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:34:38,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:34:38" (1/1) ... [2023-02-15 22:34:38,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad0a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:38, skipping insertion in model container [2023-02-15 22:34:38,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:34:38" (1/1) ... [2023-02-15 22:34:38,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:34:38,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:34:39,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:34:39,212 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) [2023-02-15 22:34:39,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cceb97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:39, skipping insertion in model container [2023-02-15 22:34:39,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:34:39,214 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 22:34:39,215 INFO L158 Benchmark]: Toolchain (without parser) took 321.61ms. Allocated memory is still 157.3MB. Free memory was 109.4MB in the beginning and 95.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-15 22:34:39,216 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:34:39,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.96ms. Allocated memory is still 157.3MB. Free memory was 109.1MB in the beginning and 95.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-15 22:34:39,218 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 113.2MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.96ms. Allocated memory is still 157.3MB. Free memory was 109.1MB in the beginning and 95.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:34:41,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:34:41,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:34:41,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:34:41,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:34:41,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:34:41,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:34:41,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:34:41,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:34:41,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:34:41,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:34:41,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:34:41,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:34:41,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:34:41,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:34:41,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:34:41,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:34:41,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:34:41,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:34:41,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:34:41,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:34:41,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:34:41,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:34:41,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:34:41,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:34:41,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:34:41,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:34:41,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:34:41,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:34:41,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:34:41,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:34:41,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:34:41,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:34:41,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:34:41,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:34:41,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:34:41,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:34:41,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:34:41,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:34:41,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:34:41,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:34:41,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 22:34:41,131 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:34:41,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:34:41,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:34:41,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:34:41,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:34:41,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:34:41,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:34:41,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:34:41,134 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:34:41,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:34:41,135 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:34:41,136 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:34:41,137 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:34:41,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:34:41,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:34:41,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:34:41,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:34:41,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:34:41,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:34:41,139 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 22:34:41,140 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:34:41,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-15 22:34:41,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:34:41,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:34:41,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:34:41,412 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:34:41,412 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:34:41,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 22:34:42,435 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:34:42,718 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:34:42,719 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-15 22:34:42,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cff3961a/331fd217c4254756a6b7ba01ce1363af/FLAG6bbc99086 [2023-02-15 22:34:43,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cff3961a/331fd217c4254756a6b7ba01ce1363af [2023-02-15 22:34:43,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:34:43,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:34:43,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:34:43,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:34:43,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:34:43,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0f8080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43, skipping insertion in model container [2023-02-15 22:34:43,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:34:43,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:34:43,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:34:43,381 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 22:34:43,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:34:43,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:34:43,437 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:34:43,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:34:43,519 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:34:43,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43 WrapperNode [2023-02-15 22:34:43,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:34:43,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:34:43,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:34:43,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:34:43,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,569 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-15 22:34:43,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:34:43,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:34:43,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:34:43,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:34:43,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:34:43,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:34:43,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:34:43,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:34:43,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (1/1) ... [2023-02-15 22:34:43,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:34:43,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:34:43,642 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) [2023-02-15 22:34:43,668 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 [2023-02-15 22:34:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-02-15 22:34:43,683 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-02-15 22:34:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-02-15 22:34:43,683 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-02-15 22:34:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 22:34:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 22:34:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 22:34:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:34:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:34:43,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:34:43,685 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-15 22:34:43,776 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:34:43,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:34:44,050 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:34:44,054 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:34:44,066 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 22:34:44,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:34:44 BoogieIcfgContainer [2023-02-15 22:34:44,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:34:44,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:34:44,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:34:44,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:34:44,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:34:43" (1/3) ... [2023-02-15 22:34:44,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4595a4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:34:44, skipping insertion in model container [2023-02-15 22:34:44,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:34:43" (2/3) ... [2023-02-15 22:34:44,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4595a4f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:34:44, skipping insertion in model container [2023-02-15 22:34:44,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:34:44" (3/3) ... [2023-02-15 22:34:44,074 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray.i [2023-02-15 22:34:44,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:34:44,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-15 22:34:44,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-15 22:34:44,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-02-15 22:34:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2023-02-15 22:34:44,268 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-15 22:34:44,268 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:44,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-02-15 22:34:44,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 90 transitions, 190 flow [2023-02-15 22:34:44,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 88 transitions, 182 flow [2023-02-15 22:34:44,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-15 22:34:44,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-15 22:34:44,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-15 22:34:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 88 transitions, 182 flow [2023-02-15 22:34:44,317 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-15 22:34:44,317 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:44,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-02-15 22:34:44,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-02-15 22:34:49,515 INFO L134 LiptonReduction]: Checked pairs total: 4000 [2023-02-15 22:34:49,516 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-02-15 22:34:49,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:34:49,539 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;@27920496, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:34:49,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-02-15 22:34:49,543 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-02-15 22:34:49,544 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:49,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:49,545 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-15 22:34:49,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2023-02-15 22:34:49,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:49,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095296033] [2023-02-15 22:34:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:49,559 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 [2023-02-15 22:34:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:49,562 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) [2023-02-15 22:34:49,637 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 [2023-02-15 22:34:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:49,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 22:34:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:49,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:49,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095296033] [2023-02-15 22:34:49,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095296033] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:49,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:49,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-15 22:34:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154120425] [2023-02-15 22:34:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:49,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 22:34:49,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 22:34:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 22:34:49,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 173 [2023-02-15 22:34:49,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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) [2023-02-15 22:34:49,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:49,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 173 [2023-02-15 22:34:49,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:49,868 INFO L130 PetriNetUnfolder]: 277/505 cut-off events. [2023-02-15 22:34:49,869 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-02-15 22:34:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 505 events. 277/505 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2634 event pairs, 241 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 956. Up to 453 conditions per place. [2023-02-15 22:34:49,874 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 22 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-02-15 22:34:49,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 112 flow [2023-02-15 22:34:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 22:34:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-15 22:34:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-02-15 22:34:49,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664739884393064 [2023-02-15 22:34:49,891 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-02-15 22:34:49,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-02-15 22:34:49,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:49,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-02-15 22:34:49,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2023-02-15 22:34:49,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2023-02-15 22:34:49,905 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2023-02-15 22:34:49,906 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 72 flow. Second operand 2 states and 196 transitions. [2023-02-15 22:34:49,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 112 flow [2023-02-15 22:34:49,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 22:34:49,910 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 66 flow [2023-02-15 22:34:49,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-02-15 22:34:49,914 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 22:34:49,914 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 66 flow [2023-02-15 22:34:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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) [2023-02-15 22:34:49,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:49,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-02-15 22:34:49,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 22:34:50,123 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 [2023-02-15 22:34:50,124 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)] === [2023-02-15 22:34:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash 10697, now seen corresponding path program 1 times [2023-02-15 22:34:50,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:50,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968651313] [2023-02-15 22:34:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:50,132 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 [2023-02-15 22:34:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:50,138 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) [2023-02-15 22:34:50,142 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 [2023-02-15 22:34:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:50,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 22:34:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:50,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:50,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:50,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968651313] [2023-02-15 22:34:50,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968651313] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:50,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:50,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857818481] [2023-02-15 22:34:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:50,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 173 [2023-02-15 22:34:50,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2023-02-15 22:34:50,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:50,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 173 [2023-02-15 22:34:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:50,398 INFO L130 PetriNetUnfolder]: 312/539 cut-off events. [2023-02-15 22:34:50,398 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 539 events. 312/539 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2681 event pairs, 241 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1056. Up to 451 conditions per place. [2023-02-15 22:34:50,403 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 29 selfloop transitions, 1 changer transitions 2/40 dead transitions. [2023-02-15 22:34:50,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 148 flow [2023-02-15 22:34:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-02-15 22:34:50,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028901734104047 [2023-02-15 22:34:50,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-02-15 22:34:50,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-02-15 22:34:50,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:50,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-02-15 22:34:50,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2023-02-15 22:34:50,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:50,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:50,417 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 66 flow. Second operand 3 states and 261 transitions. [2023-02-15 22:34:50,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 148 flow [2023-02-15 22:34:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-15 22:34:50,419 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 69 flow [2023-02-15 22:34:50,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-02-15 22:34:50,419 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-02-15 22:34:50,420 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 69 flow [2023-02-15 22:34:50,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2023-02-15 22:34:50,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:50,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-15 22:34:50,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:50,627 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 [2023-02-15 22:34:50,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash 334998, now seen corresponding path program 1 times [2023-02-15 22:34:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:50,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40993886] [2023-02-15 22:34:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:50,628 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 [2023-02-15 22:34:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:50,630 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) [2023-02-15 22:34:50,633 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 [2023-02-15 22:34:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:50,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:34:50,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:50,756 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-15 22:34:50,757 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 27 [2023-02-15 22:34:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:50,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:50,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:50,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40993886] [2023-02-15 22:34:50,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40993886] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:50,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:50,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18945519] [2023-02-15 22:34:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:50,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:50,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 173 [2023-02-15 22:34:50,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2023-02-15 22:34:50,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:50,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 173 [2023-02-15 22:34:50,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:50,905 INFO L130 PetriNetUnfolder]: 273/490 cut-off events. [2023-02-15 22:34:50,905 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-02-15 22:34:50,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 490 events. 273/490 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2479 event pairs, 176 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 983. Up to 333 conditions per place. [2023-02-15 22:34:50,908 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-02-15 22:34:50,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 139 flow [2023-02-15 22:34:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-02-15 22:34:50,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5240847784200385 [2023-02-15 22:34:50,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-02-15 22:34:50,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-02-15 22:34:50,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:50,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-02-15 22:34:50,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-02-15 22:34:50,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:50,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:50,913 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 69 flow. Second operand 3 states and 272 transitions. [2023-02-15 22:34:50,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 139 flow [2023-02-15 22:34:50,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 135 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-02-15 22:34:50,915 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 67 flow [2023-02-15 22:34:50,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-02-15 22:34:50,916 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-02-15 22:34:50,916 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 67 flow [2023-02-15 22:34:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2023-02-15 22:34:50,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:50,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-15 22:34:50,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:51,125 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 [2023-02-15 22:34:51,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:51,127 INFO L85 PathProgramCache]: Analyzing trace with hash 334999, now seen corresponding path program 1 times [2023-02-15 22:34:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:51,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060954125] [2023-02-15 22:34:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:51,128 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 [2023-02-15 22:34:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:51,129 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) [2023-02-15 22:34:51,131 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 [2023-02-15 22:34:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:51,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:34:51,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:51,204 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-02-15 22:34:51,204 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 33 [2023-02-15 22:34:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:51,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:51,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:51,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060954125] [2023-02-15 22:34:51,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060954125] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:51,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:51,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:51,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047237898] [2023-02-15 22:34:51,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:51,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:51,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 173 [2023-02-15 22:34:51,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-02-15 22:34:51,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:51,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 173 [2023-02-15 22:34:51,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:51,344 INFO L130 PetriNetUnfolder]: 269/478 cut-off events. [2023-02-15 22:34:51,344 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:51,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 478 events. 269/478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2345 event pairs, 135 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 965. Up to 221 conditions per place. [2023-02-15 22:34:51,347 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 25 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-02-15 22:34:51,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 135 flow [2023-02-15 22:34:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-02-15 22:34:51,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5048169556840078 [2023-02-15 22:34:51,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-02-15 22:34:51,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-02-15 22:34:51,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:51,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-02-15 22:34:51,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-02-15 22:34:51,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:51,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:51,351 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 67 flow. Second operand 3 states and 262 transitions. [2023-02-15 22:34:51,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 135 flow [2023-02-15 22:34:51,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 22:34:51,352 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 65 flow [2023-02-15 22:34:51,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-02-15 22:34:51,353 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-02-15 22:34:51,353 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 65 flow [2023-02-15 22:34:51,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-02-15 22:34:51,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:51,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 22:34:51,361 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 [2023-02-15 22:34:51,560 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 [2023-02-15 22:34:51,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash 321942368, now seen corresponding path program 1 times [2023-02-15 22:34:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:51,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266375905] [2023-02-15 22:34:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:51,562 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 [2023-02-15 22:34:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:51,570 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) [2023-02-15 22:34:51,572 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 [2023-02-15 22:34:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:51,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 22:34:51,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:51,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:51,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:51,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266375905] [2023-02-15 22:34:51,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266375905] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:51,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:51,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:51,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158934088] [2023-02-15 22:34:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:51,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:51,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-15 22:34:51,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 22:34:51,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:51,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-15 22:34:51,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:51,770 INFO L130 PetriNetUnfolder]: 234/423 cut-off events. [2023-02-15 22:34:51,770 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-02-15 22:34:51,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 423 events. 234/423 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2049 event pairs, 204 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 855. Up to 381 conditions per place. [2023-02-15 22:34:51,772 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-02-15 22:34:51,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 99 flow [2023-02-15 22:34:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-15 22:34:51,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-15 22:34:51,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-15 22:34:51,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-15 22:34:51,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:51,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-15 22:34:51,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-02-15 22:34:51,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:51,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:51,776 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 65 flow. Second operand 3 states and 265 transitions. [2023-02-15 22:34:51,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 99 flow [2023-02-15 22:34:51,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 22:34:51,777 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 61 flow [2023-02-15 22:34:51,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-02-15 22:34:51,778 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 22:34:51,778 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 61 flow [2023-02-15 22:34:51,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 22:34:51,779 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:51,779 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 22:34:51,803 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 [2023-02-15 22:34:51,986 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 [2023-02-15 22:34:51,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 321942341, now seen corresponding path program 1 times [2023-02-15 22:34:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:51,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565292196] [2023-02-15 22:34:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:51,987 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 [2023-02-15 22:34:51,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:51,988 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) [2023-02-15 22:34:51,989 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 [2023-02-15 22:34:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:52,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 22:34:52,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:52,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:52,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565292196] [2023-02-15 22:34:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565292196] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:52,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:52,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:52,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388206321] [2023-02-15 22:34:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:52,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:52,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-15 22:34:52,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 22:34:52,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:52,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-15 22:34:52,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:52,116 INFO L130 PetriNetUnfolder]: 199/368 cut-off events. [2023-02-15 22:34:52,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:52,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 368 events. 199/368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1755 event pairs, 173 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 725. Up to 326 conditions per place. [2023-02-15 22:34:52,118 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-02-15 22:34:52,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 93 flow [2023-02-15 22:34:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:52,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-02-15 22:34:52,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5086705202312138 [2023-02-15 22:34:52,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-02-15 22:34:52,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-02-15 22:34:52,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:52,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-02-15 22:34:52,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-02-15 22:34:52,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:52,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:52,123 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 61 flow. Second operand 3 states and 264 transitions. [2023-02-15 22:34:52,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 93 flow [2023-02-15 22:34:52,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-15 22:34:52,124 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 60 flow [2023-02-15 22:34:52,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-02-15 22:34:52,124 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 22:34:52,124 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 60 flow [2023-02-15 22:34:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-02-15 22:34:52,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:52,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 22:34:52,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:52,331 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 [2023-02-15 22:34:52,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:52,332 INFO L85 PathProgramCache]: Analyzing trace with hash 321942369, now seen corresponding path program 1 times [2023-02-15 22:34:52,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:52,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812148888] [2023-02-15 22:34:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:52,333 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 [2023-02-15 22:34:52,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:52,349 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) [2023-02-15 22:34:52,351 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 [2023-02-15 22:34:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:52,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:34:52,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:52,447 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2023-02-15 22:34:52,448 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 33 [2023-02-15 22:34:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:52,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:52,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:52,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812148888] [2023-02-15 22:34:52,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812148888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:52,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:52,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-15 22:34:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14139946] [2023-02-15 22:34:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:52,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:34:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:34:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:34:52,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 173 [2023-02-15 22:34:52,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-02-15 22:34:52,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:52,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 173 [2023-02-15 22:34:52,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:52,611 INFO L130 PetriNetUnfolder]: 164/313 cut-off events. [2023-02-15 22:34:52,611 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-15 22:34:52,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 313 events. 164/313 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1470 event pairs, 18 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 616. Up to 221 conditions per place. [2023-02-15 22:34:52,613 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-02-15 22:34:52,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 122 flow [2023-02-15 22:34:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-15 22:34:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-15 22:34:52,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-15 22:34:52,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-15 22:34:52,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-15 22:34:52,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:52,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-15 22:34:52,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-02-15 22:34:52,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:52,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-02-15 22:34:52,621 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 60 flow. Second operand 3 states and 265 transitions. [2023-02-15 22:34:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 122 flow [2023-02-15 22:34:52,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-15 22:34:52,622 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 61 flow [2023-02-15 22:34:52,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-02-15 22:34:52,623 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-15 22:34:52,623 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 61 flow [2023-02-15 22:34:52,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-02-15 22:34:52,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:52,624 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:52,649 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 [2023-02-15 22:34:52,831 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 [2023-02-15 22:34:52,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 123146058, now seen corresponding path program 1 times [2023-02-15 22:34:52,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:52,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792181745] [2023-02-15 22:34:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:52,835 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 [2023-02-15 22:34:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:52,836 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) [2023-02-15 22:34:52,838 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 [2023-02-15 22:34:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 22:34:52,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:52,917 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-02-15 22:34:52,917 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 29 [2023-02-15 22:34:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:53,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:53,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:53,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792181745] [2023-02-15 22:34:53,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792181745] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:53,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:53,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:34:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471239501] [2023-02-15 22:34:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:34:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:34:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:34:53,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-02-15 22:34:53,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-02-15 22:34:53,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-15 22:34:53,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-02-15 22:34:53,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-15 22:34:53,517 INFO L130 PetriNetUnfolder]: 224/391 cut-off events. [2023-02-15 22:34:53,517 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-02-15 22:34:53,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 391 events. 224/391 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1742 event pairs, 19 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 802. Up to 296 conditions per place. [2023-02-15 22:34:53,519 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 30 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-02-15 22:34:53,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 169 flow [2023-02-15 22:34:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:34:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-02-15 22:34:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-02-15 22:34:53,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867052023121387 [2023-02-15 22:34:53,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-02-15 22:34:53,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-02-15 22:34:53,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 22:34:53,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-02-15 22:34:53,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2023-02-15 22:34:53,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-02-15 22:34:53,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 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) [2023-02-15 22:34:53,523 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 61 flow. Second operand 5 states and 421 transitions. [2023-02-15 22:34:53,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 169 flow [2023-02-15 22:34:53,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-15 22:34:53,524 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 80 flow [2023-02-15 22:34:53,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-02-15 22:34:53,524 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-02-15 22:34:53,524 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 80 flow [2023-02-15 22:34:53,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-02-15 22:34:53,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-15 22:34:53,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:53,543 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 (9)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:53,731 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 [2023-02-15 22:34:53,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-15 22:34:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 123146059, now seen corresponding path program 1 times [2023-02-15 22:34:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:53,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75101320] [2023-02-15 22:34:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:53,732 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 [2023-02-15 22:34:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:53,733 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) [2023-02-15 22:34:53,736 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 [2023-02-15 22:34:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:34:53,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 22:34:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 22:34:53,820 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-15 22:34:53,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-15 22:34:53,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-02-15 22:34:53,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-02-15 22:34:53,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-02-15 22:34:53,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-02-15 22:34:53,836 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 [2023-02-15 22:34:54,024 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 [2023-02-15 22:34:54,024 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:54,028 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-02-15 22:34:54,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 22:34:54,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 10:34:54 BasicIcfg [2023-02-15 22:34:54,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 22:34:54,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 22:34:54,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 22:34:54,049 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 22:34:54,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:34:44" (3/4) ... [2023-02-15 22:34:54,050 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-15 22:34:54,086 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 22:34:54,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 22:34:54,086 INFO L158 Benchmark]: Toolchain (without parser) took 11069.58ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 46.8MB in the beginning and 36.2MB in the end (delta: 10.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.87ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 32.7MB in the end (delta: 13.9MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.73ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 30.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: Boogie Preprocessor took 34.37ms. Allocated memory is still 71.3MB. Free memory was 30.3MB in the beginning and 50.6MB in the end (delta: -20.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: RCFGBuilder took 461.83ms. Allocated memory is still 71.3MB. Free memory was 50.6MB in the beginning and 33.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,087 INFO L158 Benchmark]: TraceAbstraction took 9978.87ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.1MB in the beginning and 39.3MB in the end (delta: -6.2MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,088 INFO L158 Benchmark]: Witness Printer took 37.30ms. Allocated memory is still 104.9MB. Free memory was 39.3MB in the beginning and 36.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 22:34:54,089 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.87ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 32.7MB in the end (delta: 13.9MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.73ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 30.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.37ms. Allocated memory is still 71.3MB. Free memory was 30.3MB in the beginning and 50.6MB in the end (delta: -20.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 461.83ms. Allocated memory is still 71.3MB. Free memory was 50.6MB in the beginning and 33.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9978.87ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 33.1MB in the beginning and 39.3MB in the end (delta: -6.2MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Witness Printer took 37.30ms. Allocated memory is still 104.9MB. Free memory was 39.3MB in the beginning and 36.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 90 PlacesBefore, 37 PlacesAfterwards, 88 TransitionsBefore, 33 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 4000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2040, independent: 1886, independent conditional: 0, independent unconditional: 1886, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 780, independent: 752, independent conditional: 0, independent unconditional: 752, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2040, independent: 1134, independent conditional: 0, independent unconditional: 1134, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 780, unknown conditional: 0, unknown unconditional: 780] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] 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={15:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=1, j=2, size=2] [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: 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: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: 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: 1064]: 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, 112 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: 9.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 232 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 555 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 45 mSDtfsCounter, 555 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=8, InterpolantAutomatonStates: 25, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 23 ConstructedInterpolants, 6 QuantifiedInterpolants, 213 SizeOfPredicates, 11 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 33 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! [2023-02-15 22:34:54,115 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)