./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_05-lockfuns.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/04-mutex_05-lockfuns.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 26a76453a0148a9083e5ca91fffcb3e5777f05c6718e7fe778e8f06905a5ca02 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:41:29,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:41:29,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:41:29,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:41:29,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:41:29,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:41:29,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:41:29,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:41:29,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:41:29,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:41:29,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:41:29,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:41:29,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:41:29,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:41:29,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:41:29,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:41:29,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:41:29,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:41:29,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:41:29,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:41:29,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:41:29,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:41:29,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:41:29,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:41:29,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:41:29,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:41:29,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:41:29,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:41:29,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:41:29,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:41:29,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:41:29,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:41:29,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:41:29,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:41:29,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:41:29,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:41:29,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:41:29,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:41:29,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:41:29,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:41:29,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:41:29,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:41:29,940 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:41:29,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:41:29,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:41:29,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:41:29,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:41:29,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:41:29,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:41:29,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:41:29,943 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:41:29,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:41:29,944 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:41:29,945 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:41:29,946 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:41:29,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:41:29,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:41:29,946 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:41:29,946 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:41:29,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:41:29,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:41:29,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:41:29,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:41:29,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:41:29,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:41:29,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:41:29,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:41:29,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:41:29,948 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:41:29,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:41:29,949 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:41:29,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a76453a0148a9083e5ca91fffcb3e5777f05c6718e7fe778e8f06905a5ca02 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:41:30,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:41:30,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:41:30,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:41:30,293 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:41:30,293 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:41:30,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_05-lockfuns.i [2023-08-30 03:41:31,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:41:31,694 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:41:31,695 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_05-lockfuns.i [2023-08-30 03:41:31,708 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c8c0231/176b891238e7495498a2bc48fd9b0c1e/FLAG96ff6309a [2023-08-30 03:41:31,722 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90c8c0231/176b891238e7495498a2bc48fd9b0c1e [2023-08-30 03:41:31,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:41:31,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:41:31,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:41:31,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:41:31,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:41:31,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:31" (1/1) ... [2023-08-30 03:41:31,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b34da65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:31, skipping insertion in model container [2023-08-30 03:41:31,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:31" (1/1) ... [2023-08-30 03:41:31,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:41:31,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:41:32,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:41:32,266 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:41:32,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:41:32,379 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:41:32,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32 WrapperNode [2023-08-30 03:41:32,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:41:32,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:41:32,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:41:32,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:41:32,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,444 INFO L138 Inliner]: procedures = 264, calls = 19, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 48 [2023-08-30 03:41:32,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:41:32,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:41:32,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:41:32,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:41:32,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:41:32,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:41:32,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:41:32,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:41:32,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (1/1) ... [2023-08-30 03:41:32,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:41:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:41:32,526 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) [2023-08-30 03:41:32,551 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 [2023-08-30 03:41:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:41:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:41:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:41:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:41:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:41:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:41:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 03:41:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 03:41:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:41:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:41:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:41:32,574 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:41:32,748 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:41:32,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:41:32,949 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:41:32,954 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:41:32,956 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:41:32,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:32 BoogieIcfgContainer [2023-08-30 03:41:32,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:41:32,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:41:32,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:41:32,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:41:32,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:41:31" (1/3) ... [2023-08-30 03:41:32,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a9b3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:32, skipping insertion in model container [2023-08-30 03:41:32,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:32" (2/3) ... [2023-08-30 03:41:32,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a9b3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:32, skipping insertion in model container [2023-08-30 03:41:32,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:32" (3/3) ... [2023-08-30 03:41:32,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_05-lockfuns.i [2023-08-30 03:41:32,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:41:32,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-30 03:41:32,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:41:33,046 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 03:41:33,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 118 flow [2023-08-30 03:41:33,110 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2023-08-30 03:41:33,111 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:41:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 03:41:33,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 55 transitions, 118 flow [2023-08-30 03:41:33,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 106 flow [2023-08-30 03:41:33,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:41:33,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 106 flow [2023-08-30 03:41:33,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 106 flow [2023-08-30 03:41:33,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 106 flow [2023-08-30 03:41:33,157 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2023-08-30 03:41:33,157 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:41:33,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 50 events. 0/50 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-30 03:41:33,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 260 [2023-08-30 03:41:34,795 INFO L134 LiptonReduction]: Checked pairs total: 753 [2023-08-30 03:41:34,796 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-08-30 03:41:34,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:41:34,814 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;@264f2ad9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:41:34,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 03:41:34,816 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:41:34,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:41:34,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:41:34,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:41:34,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 03:41:34,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:41:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 196, now seen corresponding path program 1 times [2023-08-30 03:41:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:41:34,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104219641] [2023-08-30 03:41:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:41:34,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:41:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:41:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:41:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:41:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104219641] [2023-08-30 03:41:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104219641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:41:34,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:41:34,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:41:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617849945] [2023-08-30 03:41:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:41:34,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:41:34,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:41:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:41:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:41:34,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 95 [2023-08-30 03:41:34,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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) [2023-08-30 03:41:34,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:41:34,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 95 [2023-08-30 03:41:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:41:35,033 INFO L130 PetriNetUnfolder]: 24/62 cut-off events. [2023-08-30 03:41:35,034 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:41:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 62 events. 24/62 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 152 event pairs, 24 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 116. Up to 63 conditions per place. [2023-08-30 03:41:35,038 INFO L137 encePairwiseOnDemand]: 93/95 looper letters, 14 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-30 03:41:35,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 62 flow [2023-08-30 03:41:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:41:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:41:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2023-08-30 03:41:35,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2023-08-30 03:41:35,051 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 122 transitions. [2023-08-30 03:41:35,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 122 transitions. [2023-08-30 03:41:35,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:41:35,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 122 transitions. [2023-08-30 03:41:35,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 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) [2023-08-30 03:41:35,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:41:35,065 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:41:35,066 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 38 flow. Second operand 2 states and 122 transitions. [2023-08-30 03:41:35,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 62 flow [2023-08-30 03:41:35,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:41:35,071 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 30 flow [2023-08-30 03:41:35,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-08-30 03:41:35,076 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-30 03:41:35,076 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 30 flow [2023-08-30 03:41:35,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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) [2023-08-30 03:41:35,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:41:35,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:41:35,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:41:35,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 03:41:35,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:41:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1407828944, now seen corresponding path program 1 times [2023-08-30 03:41:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:41:35,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115913074] [2023-08-30 03:41:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:41:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:41:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:41:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:41:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:41:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115913074] [2023-08-30 03:41:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115913074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:41:35,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:41:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:41:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536324759] [2023-08-30 03:41:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:41:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:41:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:41:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:41:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:41:35,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2023-08-30 03:41:35,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-08-30 03:41:35,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:41:35,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2023-08-30 03:41:35,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:41:35,404 INFO L130 PetriNetUnfolder]: 20/53 cut-off events. [2023-08-30 03:41:35,405 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:41:35,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 53 events. 20/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 20 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 107. Up to 52 conditions per place. [2023-08-30 03:41:35,406 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 11 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-08-30 03:41:35,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 54 flow [2023-08-30 03:41:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:41:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:41:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2023-08-30 03:41:35,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543859649122806 [2023-08-30 03:41:35,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:41:35,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-08-30 03:41:35,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,418 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 30 flow. Second operand 3 states and 158 transitions. [2023-08-30 03:41:35,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 54 flow [2023-08-30 03:41:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:41:35,419 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-08-30 03:41:35,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-30 03:41:35,421 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-08-30 03:41:35,421 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-08-30 03:41:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-08-30 03:41:35,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:41:35,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 03:41:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:41:35,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 03:41:35,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:41:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1407828943, now seen corresponding path program 1 times [2023-08-30 03:41:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:41:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118568639] [2023-08-30 03:41:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:41:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:41:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:41:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:41:35,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:41:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118568639] [2023-08-30 03:41:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118568639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:41:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:41:35,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:41:35,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401781969] [2023-08-30 03:41:35,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:41:35,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:41:35,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:41:35,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:41:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:41:35,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 95 [2023-08-30 03:41:35,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-08-30 03:41:35,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:41:35,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 95 [2023-08-30 03:41:35,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:41:35,605 INFO L130 PetriNetUnfolder]: 16/44 cut-off events. [2023-08-30 03:41:35,606 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:41:35,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 44 events. 16/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 16 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 91. Up to 43 conditions per place. [2023-08-30 03:41:35,608 INFO L137 encePairwiseOnDemand]: 92/95 looper letters, 10 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2023-08-30 03:41:35,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 54 flow [2023-08-30 03:41:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:41:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:41:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-08-30 03:41:35,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2023-08-30 03:41:35,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-08-30 03:41:35,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-08-30 03:41:35,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:41:35,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-08-30 03:41:35,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-08-30 03:41:35,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,617 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 148 transitions. [2023-08-30 03:41:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 54 flow [2023-08-30 03:41:35,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:41:35,618 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-08-30 03:41:35,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-30 03:41:35,620 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-30 03:41:35,623 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-08-30 03:41:35,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-08-30 03:41:35,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:41:35,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:41:35,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:41:35,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 03:41:35,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:41:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 382865133, now seen corresponding path program 1 times [2023-08-30 03:41:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:41:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005417866] [2023-08-30 03:41:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:41:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:41:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:41:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:41:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:41:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005417866] [2023-08-30 03:41:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005417866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:41:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:41:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:41:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337994312] [2023-08-30 03:41:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:41:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:41:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:41:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:41:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:41:35,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2023-08-30 03:41:35,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:41:35,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:41:35,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2023-08-30 03:41:35,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:41:35,794 INFO L130 PetriNetUnfolder]: 1/20 cut-off events. [2023-08-30 03:41:35,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:41:35,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 20 events. 1/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 1 based on Foata normal form. 6/26 useless extension candidates. Maximal degree in co-relation 43. Up to 12 conditions per place. [2023-08-30 03:41:35,795 INFO L137 encePairwiseOnDemand]: 91/95 looper letters, 8 selfloop transitions, 4 changer transitions 0/12 dead transitions. [2023-08-30 03:41:35,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 54 flow [2023-08-30 03:41:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:41:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:41:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2023-08-30 03:41:35,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543859649122806 [2023-08-30 03:41:35,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:41:35,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 158 transitions. [2023-08-30 03:41:35,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-08-30 03:41:35,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:35,804 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 3 states and 158 transitions. [2023-08-30 03:41:35,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 54 flow [2023-08-30 03:41:35,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:41:35,811 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 34 flow [2023-08-30 03:41:35,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-30 03:41:35,813 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-30 03:41:35,813 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 34 flow [2023-08-30 03:41:35,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:41:35,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:41:35,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:41:35,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:41:35,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 03:41:35,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:41:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1020820035, now seen corresponding path program 2 times [2023-08-30 03:41:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:41:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152166477] [2023-08-30 03:41:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:41:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:41:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:41:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:41:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:41:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152166477] [2023-08-30 03:41:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152166477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:41:35,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:41:35,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:41:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057639498] [2023-08-30 03:41:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:41:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:41:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:41:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:41:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:41:36,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 95 [2023-08-30 03:41:36,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-08-30 03:41:36,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:41:36,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 95 [2023-08-30 03:41:36,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:41:36,030 INFO L130 PetriNetUnfolder]: 1/19 cut-off events. [2023-08-30 03:41:36,030 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:41:36,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 19 events. 1/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 47. Up to 19 conditions per place. [2023-08-30 03:41:36,031 INFO L137 encePairwiseOnDemand]: 93/95 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-30 03:41:36,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 54 flow [2023-08-30 03:41:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:41:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:41:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2023-08-30 03:41:36,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2023-08-30 03:41:36,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 159 transitions. [2023-08-30 03:41:36,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 159 transitions. [2023-08-30 03:41:36,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:41:36,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 159 transitions. [2023-08-30 03:41:36,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-08-30 03:41:36,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:36,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-08-30 03:41:36,036 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 34 flow. Second operand 3 states and 159 transitions. [2023-08-30 03:41:36,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 54 flow [2023-08-30 03:41:36,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:41:36,037 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-30 03:41:36,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-30 03:41:36,040 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-08-30 03:41:36,040 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-30 03:41:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-08-30 03:41:36,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-08-30 03:41:36,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-08-30 03:41:36,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 03:41:36,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-30 03:41:36,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-30 03:41:36,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-30 03:41:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:41:36,048 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-30 03:41:36,053 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:41:36,053 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:41:36,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:41:36 BasicIcfg [2023-08-30 03:41:36,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:41:36,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:41:36,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:41:36,063 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:41:36,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:32" (3/4) ... [2023-08-30 03:41:36,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:41:36,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 03:41:36,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-08-30 03:41:36,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:41:36,077 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:41:36,109 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:41:36,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:41:36,110 INFO L158 Benchmark]: Toolchain (without parser) took 4383.60ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 40.4MB in the beginning and 41.3MB in the end (delta: -834.3kB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,110 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:41:36,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 653.84ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.3MB in the beginning and 47.0MB in the end (delta: -6.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.87ms. Allocated memory is still 81.8MB. Free memory was 47.0MB in the beginning and 44.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,111 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 81.8MB. Free memory was 44.8MB in the beginning and 43.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:41:36,111 INFO L158 Benchmark]: RCFGBuilder took 468.97ms. Allocated memory is still 81.8MB. Free memory was 43.5MB in the beginning and 57.5MB in the end (delta: -14.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,112 INFO L158 Benchmark]: TraceAbstraction took 3101.50ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 57.0MB in the beginning and 44.1MB in the end (delta: 12.9MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,112 INFO L158 Benchmark]: Witness Printer took 46.11ms. Allocated memory is still 98.6MB. Free memory was 44.1MB in the beginning and 41.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 03:41:36,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 653.84ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.3MB in the beginning and 47.0MB in the end (delta: -6.8MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.87ms. Allocated memory is still 81.8MB. Free memory was 47.0MB in the beginning and 44.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 81.8MB. Free memory was 44.8MB in the beginning and 43.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 468.97ms. Allocated memory is still 81.8MB. Free memory was 43.5MB in the beginning and 57.5MB in the end (delta: -14.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3101.50ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 57.0MB in the beginning and 44.1MB in the end (delta: 12.9MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 46.11ms. Allocated memory is still 98.6MB. Free memory was 44.1MB in the beginning and 41.3MB in the end (delta: 2.9MB). 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: 1.7s, 54 PlacesBefore, 20 PlacesAfterwards, 50 TransitionsBefore, 16 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 753 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 472, independent: 364, independent conditional: 0, independent unconditional: 364, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 148, independent: 134, independent conditional: 0, independent unconditional: 134, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 472, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 148, unknown conditional: 0, unknown unconditional: 148] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 931]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 68 locations, 6 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: 3.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 32 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 14, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 03:41:36,133 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 Result: TRUE