./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 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-memsafety/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-?-574ddb4 [2023-02-18 22:30:52,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:30:52,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:30:52,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:30:52,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:30:52,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:30:52,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:30:52,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:30:52,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:30:52,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:30:52,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:30:52,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:30:52,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:30:52,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:30:52,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:30:52,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:30:52,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:30:52,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:30:52,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:30:52,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:30:52,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:30:52,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:30:52,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:30:52,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:30:52,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:30:52,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:30:52,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:30:52,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:30:52,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:30:52,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:30:52,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:30:52,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:30:52,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:30:52,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:30:52,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:30:52,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:30:52,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:30:52,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:30:52,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:30:52,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:30:52,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:30:52,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 22:30:52,364 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:30:52,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:30:52,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:30:52,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:30:52,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:30:52,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:30:52,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:30:52,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:30:52,368 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:30:52,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:30:52,368 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:30:52,369 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:30:52,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:52,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:30:52,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 22:30:52,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 22:30:52,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:30:52,371 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:30:52,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:30:52,371 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:30:52,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-18 22:30:52,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:30:52,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:30:52,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:30:52,577 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:30:52,577 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:30:52,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-18 22:30:53,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:30:53,805 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:30:53,806 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-18 22:30:53,818 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f186737/fa799334651146daada956d7d037fddf/FLAG046cb99fd [2023-02-18 22:30:54,146 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f186737/fa799334651146daada956d7d037fddf [2023-02-18 22:30:54,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:30:54,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:30:54,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:54,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:30:54,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:30:54,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:54" (1/1) ... [2023-02-18 22:30:54,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128b677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:54, skipping insertion in model container [2023-02-18 22:30:54,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:54" (1/1) ... [2023-02-18 22:30:54,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:30:54,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:54,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:54,468 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-18 22:30:54,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47472c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:54, skipping insertion in model container [2023-02-18 22:30:54,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:54,470 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 22:30:54,471 INFO L158 Benchmark]: Toolchain (without parser) took 321.64ms. Allocated memory is still 167.8MB. Free memory was 129.2MB in the beginning and 115.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 22:30:54,472 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 121.6MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 22:30:54,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.09ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 115.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 22:30:54,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 121.6MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.09ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 115.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. 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-?-574ddb4 [2023-02-18 22:30:55,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:30:55,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:30:56,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:30:56,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:30:56,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:30:56,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:30:56,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:30:56,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:30:56,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:30:56,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:30:56,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:30:56,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:30:56,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:30:56,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:30:56,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:30:56,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:30:56,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:30:56,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:30:56,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:30:56,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:30:56,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:30:56,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:30:56,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:30:56,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:30:56,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:30:56,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:30:56,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:30:56,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:30:56,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:30:56,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:30:56,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:30:56,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:30:56,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:30:56,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:30:56,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:30:56,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:30:56,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:30:56,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:30:56,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:30:56,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:30:56,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 22:30:56,100 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:30:56,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:30:56,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:30:56,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:30:56,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:30:56,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:30:56,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:30:56,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:30:56,104 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:30:56,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:30:56,104 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:30:56,105 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:30:56,106 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:30:56,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:30:56,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:30:56,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:30:56,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:56,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:30:56,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:30:56,108 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 22:30:56,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 22:30:56,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:30:56,108 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:30:56,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:30:56,109 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 22:30:56,109 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:30:56,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-02-18 22:30:56,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:30:56,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:30:56,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:30:56,352 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:30:56,353 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:30:56,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-18 22:30:57,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:30:57,567 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:30:57,570 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-02-18 22:30:57,588 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab23e1329/9f9d8a096ef34777bd408bf3f3f67c14/FLAG27eb429b8 [2023-02-18 22:30:57,599 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab23e1329/9f9d8a096ef34777bd408bf3f3f67c14 [2023-02-18 22:30:57,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:30:57,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:30:57,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:57,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:30:57,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:30:57,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:57" (1/1) ... [2023-02-18 22:30:57,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f7e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:57, skipping insertion in model container [2023-02-18 22:30:57,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:30:57" (1/1) ... [2023-02-18 22:30:57,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:30:57,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:57,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:57,967 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 22:30:57,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:30:58,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:58,013 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 22:30:58,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:30:58,108 INFO L208 MainTranslator]: Completed translation [2023-02-18 22:30:58,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58 WrapperNode [2023-02-18 22:30:58,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:30:58,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 22:30:58,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 22:30:58,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 22:30:58,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,158 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-18 22:30:58,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 22:30:58,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 22:30:58,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 22:30:58,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 22:30:58,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 22:30:58,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 22:30:58,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 22:30:58,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 22:30:58,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (1/1) ... [2023-02-18 22:30:58,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:30:58,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:30:58,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 22:30:58,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 22:30:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-02-18 22:30:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-02-18 22:30:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-02-18 22:30:58,271 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-02-18 22:30:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 22:30:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 22:30:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 22:30:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 22:30:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 22:30:58,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 22:30:58,273 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-18 22:30:58,378 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 22:30:58,379 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 22:30:58,556 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 22:30:58,561 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 22:30:58,561 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 22:30:58,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:30:58 BoogieIcfgContainer [2023-02-18 22:30:58,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 22:30:58,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 22:30:58,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 22:30:58,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 22:30:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:30:57" (1/3) ... [2023-02-18 22:30:58,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaeab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:30:58, skipping insertion in model container [2023-02-18 22:30:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:30:58" (2/3) ... [2023-02-18 22:30:58,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaeab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:30:58, skipping insertion in model container [2023-02-18 22:30:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:30:58" (3/3) ... [2023-02-18 22:30:58,568 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray.i [2023-02-18 22:30:58,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 22:30:58,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-02-18 22:30:58,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-18 22:30:58,652 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-02-18 22:30:58,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2023-02-18 22:30:58,740 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-18 22:30:58,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:30:58,752 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. [2023-02-18 22:30:58,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 90 transitions, 190 flow [2023-02-18 22:30:58,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 88 transitions, 182 flow [2023-02-18 22:30:58,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-18 22:30:58,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-18 22:30:58,784 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 88 transitions, 182 flow [2023-02-18 22:30:58,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 88 transitions, 182 flow [2023-02-18 22:30:58,800 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-02-18 22:30:58,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:30:58,801 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. [2023-02-18 22:30:58,802 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-02-18 22:30:58,946 INFO L134 LiptonReduction]: Checked pairs total: 4000 [2023-02-18 22:30:58,947 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-02-18 22:30:58,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 22:30:58,969 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;@45b39c52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 22:30:58,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-02-18 22:30:58,972 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-02-18 22:30:58,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:30:58,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:30:58,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-18 22:30:58,973 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)] === [2023-02-18 22:30:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:30:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2023-02-18 22:30:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:30:58,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254209688] [2023-02-18 22:30:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:30:58,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:30:58,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:30:58,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:30:58,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 22:30:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:30:59,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 22:30:59,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:30:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:30:59,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:30:59,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:30:59,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254209688] [2023-02-18 22:30:59,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254209688] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:30:59,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:30:59,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-18 22:30:59,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820965974] [2023-02-18 22:30:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:30:59,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 22:30:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:30:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 22:30:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 22:30:59,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 173 [2023-02-18 22:30:59,150 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) [2023-02-18 22:30:59,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:30:59,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 173 [2023-02-18 22:30:59,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:30:59,291 INFO L130 PetriNetUnfolder]: 277/505 cut-off events. [2023-02-18 22:30:59,291 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-02-18 22:30:59,294 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. [2023-02-18 22:30:59,298 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 22 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-02-18 22:30:59,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 112 flow [2023-02-18 22:30:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 22:30:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-18 22:30:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-02-18 22:30:59,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664739884393064 [2023-02-18 22:30:59,310 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-02-18 22:30:59,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-02-18 22:30:59,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:30:59,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-02-18 22:30:59,314 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) [2023-02-18 22:30:59,319 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) [2023-02-18 22:30:59,320 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) [2023-02-18 22:30:59,321 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 72 flow. Second operand 2 states and 196 transitions. [2023-02-18 22:30:59,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 112 flow [2023-02-18 22:30:59,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:30:59,325 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 66 flow [2023-02-18 22:30:59,326 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} [2023-02-18 22:30:59,331 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-18 22:30:59,331 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 66 flow [2023-02-18 22:30:59,331 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) [2023-02-18 22:30:59,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:30:59,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-02-18 22:30:59,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 22:30:59,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:30:59,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:30:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:30:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 10697, now seen corresponding path program 1 times [2023-02-18 22:30:59,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:30:59,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62221458] [2023-02-18 22:30:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:30:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:30:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:30:59,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:30:59,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 22:30:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:30:59,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:30:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:30:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:30:59,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:30:59,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:30:59,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62221458] [2023-02-18 22:30:59,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62221458] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:30:59,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:30:59,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:30:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989408464] [2023-02-18 22:30:59,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:30:59,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:30:59,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:30:59,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:30:59,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:30:59,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 173 [2023-02-18 22:30:59,658 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) [2023-02-18 22:30:59,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:30:59,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 173 [2023-02-18 22:30:59,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:30:59,800 INFO L130 PetriNetUnfolder]: 312/539 cut-off events. [2023-02-18 22:30:59,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:30:59,804 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. [2023-02-18 22:30:59,807 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 29 selfloop transitions, 1 changer transitions 2/40 dead transitions. [2023-02-18 22:30:59,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 148 flow [2023-02-18 22:30:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:30:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:30:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-02-18 22:30:59,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028901734104047 [2023-02-18 22:30:59,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-02-18 22:30:59,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-02-18 22:30:59,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:30:59,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-02-18 22:30:59,815 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) [2023-02-18 22:30:59,817 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) [2023-02-18 22:30:59,817 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) [2023-02-18 22:30:59,818 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 66 flow. Second operand 3 states and 261 transitions. [2023-02-18 22:30:59,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 148 flow [2023-02-18 22:30:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-18 22:30:59,819 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 69 flow [2023-02-18 22:30:59,819 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} [2023-02-18 22:30:59,820 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-02-18 22:30:59,820 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 69 flow [2023-02-18 22:30:59,820 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) [2023-02-18 22:30:59,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:30:59,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 22:30:59,829 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 [2023-02-18 22:31:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,028 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)] === [2023-02-18 22:31:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 334998, now seen corresponding path program 1 times [2023-02-18 22:31:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:00,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777897209] [2023-02-18 22:31:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:00,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:00,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:00,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-18 22:31:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 22:31:00,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:00,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:00,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 60 [2023-02-18 22:31:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:00,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:00,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:00,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777897209] [2023-02-18 22:31:00,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777897209] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:00,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:00,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:00,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841572187] [2023-02-18 22:31:00,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:00,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:00,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:00,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 173 [2023-02-18 22:31:00,230 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) [2023-02-18 22:31:00,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:00,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 173 [2023-02-18 22:31:00,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:00,315 INFO L130 PetriNetUnfolder]: 273/490 cut-off events. [2023-02-18 22:31:00,316 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-02-18 22:31:00,317 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. [2023-02-18 22:31:00,318 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 26 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-02-18 22:31:00,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 139 flow [2023-02-18 22:31:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-02-18 22:31:00,321 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5240847784200385 [2023-02-18 22:31:00,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-02-18 22:31:00,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-02-18 22:31:00,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:00,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-02-18 22:31:00,322 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) [2023-02-18 22:31:00,323 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) [2023-02-18 22:31:00,323 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) [2023-02-18 22:31:00,323 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 69 flow. Second operand 3 states and 272 transitions. [2023-02-18 22:31:00,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 139 flow [2023-02-18 22:31:00,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 135 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:00,325 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 67 flow [2023-02-18 22:31:00,326 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} [2023-02-18 22:31:00,326 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-02-18 22:31:00,326 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 67 flow [2023-02-18 22:31:00,327 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) [2023-02-18 22:31:00,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:00,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-18 22:31:00,336 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 [2023-02-18 22:31:00,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,530 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)] === [2023-02-18 22:31:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash 334999, now seen corresponding path program 1 times [2023-02-18 22:31:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:00,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175471438] [2023-02-18 22:31:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:00,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:00,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:00,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-18 22:31:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:00,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 22:31:00,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:00,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:00,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 60 [2023-02-18 22:31:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:00,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:00,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:00,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175471438] [2023-02-18 22:31:00,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175471438] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:00,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:00,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791762845] [2023-02-18 22:31:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:00,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:00,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 173 [2023-02-18 22:31:00,640 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) [2023-02-18 22:31:00,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:00,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 173 [2023-02-18 22:31:00,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:00,706 INFO L130 PetriNetUnfolder]: 269/478 cut-off events. [2023-02-18 22:31:00,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:00,707 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. [2023-02-18 22:31:00,709 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 25 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-02-18 22:31:00,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 135 flow [2023-02-18 22:31:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-02-18 22:31:00,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5048169556840078 [2023-02-18 22:31:00,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-02-18 22:31:00,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-02-18 22:31:00,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:00,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-02-18 22:31:00,711 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) [2023-02-18 22:31:00,712 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) [2023-02-18 22:31:00,713 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) [2023-02-18 22:31:00,713 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 67 flow. Second operand 3 states and 262 transitions. [2023-02-18 22:31:00,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 135 flow [2023-02-18 22:31:00,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:00,714 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 65 flow [2023-02-18 22:31:00,714 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} [2023-02-18 22:31:00,714 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-02-18 22:31:00,714 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 65 flow [2023-02-18 22:31:00,715 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) [2023-02-18 22:31:00,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:00,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:00,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,925 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)] === [2023-02-18 22:31:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 321942368, now seen corresponding path program 1 times [2023-02-18 22:31:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:00,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576144201] [2023-02-18 22:31:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:00,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:00,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:00,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-18 22:31:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:00,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:31:00,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:00,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:00,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:00,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576144201] [2023-02-18 22:31:00,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576144201] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:00,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:00,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862934446] [2023-02-18 22:31:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:01,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-18 22:31:01,012 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) [2023-02-18 22:31:01,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:01,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-18 22:31:01,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:01,062 INFO L130 PetriNetUnfolder]: 234/423 cut-off events. [2023-02-18 22:31:01,062 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-02-18 22:31:01,063 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. [2023-02-18 22:31:01,064 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-02-18 22:31:01,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 99 flow [2023-02-18 22:31:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-18 22:31:01,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-18 22:31:01,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-18 22:31:01,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-18 22:31:01,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:01,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-18 22:31:01,067 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) [2023-02-18 22:31:01,067 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) [2023-02-18 22:31:01,068 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) [2023-02-18 22:31:01,068 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 65 flow. Second operand 3 states and 265 transitions. [2023-02-18 22:31:01,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 99 flow [2023-02-18 22:31:01,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 27 transitions, 95 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:01,069 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 61 flow [2023-02-18 22:31:01,069 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} [2023-02-18 22:31:01,069 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-18 22:31:01,069 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 61 flow [2023-02-18 22:31:01,070 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) [2023-02-18 22:31:01,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:01,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:01,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:01,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:01,279 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)] === [2023-02-18 22:31:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash 321942341, now seen corresponding path program 1 times [2023-02-18 22:31:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:01,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019843343] [2023-02-18 22:31:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:01,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:01,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:01,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-18 22:31:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:01,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 22:31:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:01,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:01,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:01,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019843343] [2023-02-18 22:31:01,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019843343] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:01,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:01,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:01,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888263389] [2023-02-18 22:31:01,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:01,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:01,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 173 [2023-02-18 22:31:01,346 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) [2023-02-18 22:31:01,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:01,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 173 [2023-02-18 22:31:01,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:01,395 INFO L130 PetriNetUnfolder]: 199/368 cut-off events. [2023-02-18 22:31:01,396 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:01,396 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. [2023-02-18 22:31:01,398 INFO L137 encePairwiseOnDemand]: 171/173 looper letters, 16 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-02-18 22:31:01,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 93 flow [2023-02-18 22:31:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-02-18 22:31:01,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5086705202312138 [2023-02-18 22:31:01,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-02-18 22:31:01,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-02-18 22:31:01,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:01,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-02-18 22:31:01,401 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) [2023-02-18 22:31:01,402 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) [2023-02-18 22:31:01,402 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) [2023-02-18 22:31:01,402 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 61 flow. Second operand 3 states and 264 transitions. [2023-02-18 22:31:01,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 93 flow [2023-02-18 22:31:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 22:31:01,403 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 60 flow [2023-02-18 22:31:01,403 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} [2023-02-18 22:31:01,404 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-18 22:31:01,404 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 60 flow [2023-02-18 22:31:01,404 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) [2023-02-18 22:31:01,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:01,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 22:31:01,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-18 22:31:01,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:01,611 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)] === [2023-02-18 22:31:01,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 321942369, now seen corresponding path program 1 times [2023-02-18 22:31:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:01,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676734200] [2023-02-18 22:31:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:01,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:01,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:01,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:01,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-18 22:31:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:01,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 22:31:01,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:01,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:01,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 67 [2023-02-18 22:31:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:01,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:01,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676734200] [2023-02-18 22:31:01,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676734200] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:01,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:01,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 22:31:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566096684] [2023-02-18 22:31:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:01,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:31:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:31:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:31:01,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 173 [2023-02-18 22:31:01,927 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) [2023-02-18 22:31:01,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:01,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 173 [2023-02-18 22:31:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:02,017 INFO L130 PetriNetUnfolder]: 164/313 cut-off events. [2023-02-18 22:31:02,017 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-18 22:31:02,017 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. [2023-02-18 22:31:02,018 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-02-18 22:31:02,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 122 flow [2023-02-18 22:31:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:31:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-18 22:31:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-02-18 22:31:02,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5105973025048169 [2023-02-18 22:31:02,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-02-18 22:31:02,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-02-18 22:31:02,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:02,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-02-18 22:31:02,021 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) [2023-02-18 22:31:02,022 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) [2023-02-18 22:31:02,023 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) [2023-02-18 22:31:02,023 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 60 flow. Second operand 3 states and 265 transitions. [2023-02-18 22:31:02,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 122 flow [2023-02-18 22:31:02,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-18 22:31:02,023 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 61 flow [2023-02-18 22:31:02,024 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} [2023-02-18 22:31:02,024 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-02-18 22:31:02,024 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 61 flow [2023-02-18 22:31:02,024 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) [2023-02-18 22:31:02,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:02,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:02,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:02,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash 123146058, now seen corresponding path program 1 times [2023-02-18 22:31:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:02,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754804834] [2023-02-18 22:31:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:02,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:02,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:02,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:02,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-18 22:31:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:31:02,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 22:31:02,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:31:02,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 22:31:02,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 22:31:02,333 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 1 case distinctions, treesize of input 12 treesize of output 41 [2023-02-18 22:31:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:31:02,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:31:02,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 22:31:02,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754804834] [2023-02-18 22:31:02,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754804834] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:31:02,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:31:02,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 22:31:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326561270] [2023-02-18 22:31:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:31:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 22:31:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 22:31:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 22:31:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:31:02,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-02-18 22:31:02,613 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) [2023-02-18 22:31:02,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-18 22:31:02,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-02-18 22:31:02,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-18 22:31:02,819 INFO L130 PetriNetUnfolder]: 329/616 cut-off events. [2023-02-18 22:31:02,819 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-02-18 22:31:02,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 616 events. 329/616 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3104 event pairs, 19 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 1207. Up to 306 conditions per place. [2023-02-18 22:31:02,822 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2023-02-18 22:31:02,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 214 flow [2023-02-18 22:31:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 22:31:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-02-18 22:31:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2023-02-18 22:31:02,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4913294797687861 [2023-02-18 22:31:02,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 510 transitions. [2023-02-18 22:31:02,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 510 transitions. [2023-02-18 22:31:02,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 22:31:02,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 510 transitions. [2023-02-18 22:31:02,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:31:02,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:31:02,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:31:02,828 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 61 flow. Second operand 6 states and 510 transitions. [2023-02-18 22:31:02,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 214 flow [2023-02-18 22:31:02,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-18 22:31:02,830 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 109 flow [2023-02-18 22:31:02,830 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-02-18 22:31:02,832 INFO L288 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-02-18 22:31:02,832 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 109 flow [2023-02-18 22:31:02,832 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) [2023-02-18 22:31:02,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-18 22:31:02,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:02,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-18 22:31:03,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:03,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-02-18 22:31:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:31:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash 123146059, now seen corresponding path program 1 times [2023-02-18 22:31:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 22:31:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704940668] [2023-02-18 22:31:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:31:03,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:03,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 22:31:03,045 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 22:31:03,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-18 22:31:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 22:31:03,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 22:31:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 22:31:03,155 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-02-18 22:31:03,156 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 22:31:03,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-02-18 22:31:03,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-02-18 22:31:03,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-02-18 22:31:03,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-02-18 22:31:03,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-02-18 22:31:03,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-02-18 22:31:03,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-18 22:31:03,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 22:31:03,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:31:03,365 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-02-18 22:31:03,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 22:31:03,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 10:31:03 BasicIcfg [2023-02-18 22:31:03,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 22:31:03,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 22:31:03,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 22:31:03,380 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 22:31:03,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:30:58" (3/4) ... [2023-02-18 22:31:03,381 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-18 22:31:03,413 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 22:31:03,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 22:31:03,413 INFO L158 Benchmark]: Toolchain (without parser) took 5811.32ms. Allocated memory was 67.1MB in the beginning and 130.0MB in the end (delta: 62.9MB). Free memory was 31.6MB in the beginning and 71.4MB in the end (delta: -39.7MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,414 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 22:31:03,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.22ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 31.5MB in the beginning and 81.4MB in the end (delta: -50.0MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,414 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.88ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,414 INFO L158 Benchmark]: Boogie Preprocessor took 35.04ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,415 INFO L158 Benchmark]: RCFGBuilder took 367.24ms. Allocated memory is still 107.0MB. Free memory was 77.2MB in the beginning and 62.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,415 INFO L158 Benchmark]: TraceAbstraction took 4815.60ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 61.5MB in the beginning and 74.5MB in the end (delta: -13.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,415 INFO L158 Benchmark]: Witness Printer took 33.19ms. Allocated memory is still 130.0MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 22:31:03,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.22ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 31.5MB in the beginning and 81.4MB in the end (delta: -50.0MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.88ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.04ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 367.24ms. Allocated memory is still 107.0MB. Free memory was 77.2MB in the beginning and 62.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4815.60ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 61.5MB in the beginning and 74.5MB in the end (delta: -13.0MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 33.19ms. Allocated memory is still 130.0MB. Free memory was 74.5MB in the beginning and 71.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 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={7:0}, id2={15:0}, 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: 4.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 239 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 581 IncrementalHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 45 mSDtfsCounter, 581 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 23 ConstructedInterpolants, 10 QuantifiedInterpolants, 2111 SizeOfPredicates, 11 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-18 22:31:03,431 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)