./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.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/ldv-races/race-1_1-join.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 ab598119c4148bae0d8b880ae1fca3b30d4f7d9a1b46bb07e7f3565fa04f9e72 --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 03:20:55,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:20:55,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:20:55,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:20:55,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:20:55,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:20:55,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:20:55,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:20:55,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:20:55,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:20:55,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:20:55,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:20:55,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:20:55,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:20:55,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:20:55,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:20:55,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:20:55,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:20:55,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:20:55,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:20:55,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:20:55,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:20:55,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:20:55,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:20:55,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:20:55,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:20:55,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:20:55,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:20:55,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:20:55,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:20:55,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:20:55,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:20:55,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:20:55,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:20:55,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:20:55,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:20:55,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:20:55,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:20:55,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:20:55,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:20:55,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:20:55,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:20:55,588 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:20:55,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:20:55,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:20:55,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:20:55,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:20:55,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:20:55,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:20:55,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:20:55,591 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:20:55,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:20:55,592 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:20:55,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:20:55,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:20:55,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:20:55,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:20:55,593 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:20:55,594 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:20:55,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:20:55,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:20:55,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:20:55,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:20:55,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:20:55,595 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:20:55,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab598119c4148bae0d8b880ae1fca3b30d4f7d9a1b46bb07e7f3565fa04f9e72 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:20:55,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:20:55,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:20:55,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:20:55,880 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:20:55,881 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:20:55,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2023-08-30 03:20:56,822 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:20:57,118 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:20:57,119 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2023-08-30 03:20:57,135 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdae5db9e/3394583724a84465a7e3c752ffd25f2b/FLAGa1b282a53 [2023-08-30 03:20:57,153 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdae5db9e/3394583724a84465a7e3c752ffd25f2b [2023-08-30 03:20:57,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:20:57,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:20:57,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:20:57,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:20:57,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:20:57,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f34c954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57, skipping insertion in model container [2023-08-30 03:20:57,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:20:57,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:20:57,653 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2023-08-30 03:20:57,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:20:57,684 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:20:57,728 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2023-08-30 03:20:57,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:20:57,834 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:20:57,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57 WrapperNode [2023-08-30 03:20:57,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:20:57,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:20:57,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:20:57,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:20:57,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,887 INFO L138 Inliner]: procedures = 480, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 92 [2023-08-30 03:20:57,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:20:57,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:20:57,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:20:57,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:20:57,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:20:57,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:20:57,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:20:57,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:20:57,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (1/1) ... [2023-08-30 03:20:57,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:20:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:20:57,965 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 03:20:57,983 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 03:20:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:20:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:20:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:20:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 03:20:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 03:20:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:20:57,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:20:57,993 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 03:20:58,247 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:20:58,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:20:58,394 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:20:58,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:20:58,399 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:20:58,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:58 BoogieIcfgContainer [2023-08-30 03:20:58,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:20:58,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:20:58,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:20:58,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:20:58,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:20:57" (1/3) ... [2023-08-30 03:20:58,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ced277d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:58, skipping insertion in model container [2023-08-30 03:20:58,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:57" (2/3) ... [2023-08-30 03:20:58,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ced277d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:58, skipping insertion in model container [2023-08-30 03:20:58,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:58" (3/3) ... [2023-08-30 03:20:58,406 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2023-08-30 03:20:58,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:20:58,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-30 03:20:58,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:20:58,463 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 03:20:58,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 110 transitions, 228 flow [2023-08-30 03:20:58,542 INFO L130 PetriNetUnfolder]: 5/126 cut-off events. [2023-08-30 03:20:58,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:20:58,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 126 events. 5/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 249 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-08-30 03:20:58,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 110 transitions, 228 flow [2023-08-30 03:20:58,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 109 transitions, 224 flow [2023-08-30 03:20:58,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:20:58,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 109 transitions, 224 flow [2023-08-30 03:20:58,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 109 transitions, 224 flow [2023-08-30 03:20:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 224 flow [2023-08-30 03:20:58,604 INFO L130 PetriNetUnfolder]: 5/126 cut-off events. [2023-08-30 03:20:58,604 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:20:58,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 126 events. 5/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 249 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-08-30 03:20:58,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 600 [2023-08-30 03:21:02,962 INFO L134 LiptonReduction]: Checked pairs total: 564 [2023-08-30 03:21:02,963 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 03:21:02,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:21:02,975 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;@2486fcd7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:21:02,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 03:21:02,976 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:21:02,976 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:02,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:02,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:21:02,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:02,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 438, now seen corresponding path program 1 times [2023-08-30 03:21:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899361451] [2023-08-30 03:21:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,168 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 03:21:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899361451] [2023-08-30 03:21:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899361451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:21:03,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415532199] [2023-08-30 03:21:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:21:03,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:21:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:21:03,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 252 [2023-08-30 03:21:03,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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 03:21:03,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:03,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 252 [2023-08-30 03:21:03,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:03,233 INFO L130 PetriNetUnfolder]: 7/34 cut-off events. [2023-08-30 03:21:03,233 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 03:21:03,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 34 events. 7/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 6 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 40. Up to 30 conditions per place. [2023-08-30 03:21:03,235 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 11 selfloop transitions, 0 changer transitions 1/15 dead transitions. [2023-08-30 03:21:03,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 60 flow [2023-08-30 03:21:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:21:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:21:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 218 transitions. [2023-08-30 03:21:03,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2023-08-30 03:21:03,247 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 218 transitions. [2023-08-30 03:21:03,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 218 transitions. [2023-08-30 03:21:03,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:03,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 218 transitions. [2023-08-30 03:21:03,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 03:21:03,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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 03:21:03,258 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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 03:21:03,259 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 48 flow. Second operand 2 states and 218 transitions. [2023-08-30 03:21:03,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 60 flow [2023-08-30 03:21:03,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:21:03,262 INFO L231 Difference]: Finished difference. Result has 16 places, 14 transitions, 30 flow [2023-08-30 03:21:03,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=16, PETRI_TRANSITIONS=14} [2023-08-30 03:21:03,266 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -7 predicate places. [2023-08-30 03:21:03,266 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 14 transitions, 30 flow [2023-08-30 03:21:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 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 03:21:03,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:03,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:21:03,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:21:03,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:03,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 14093, now seen corresponding path program 1 times [2023-08-30 03:21:03,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85368847] [2023-08-30 03:21:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,380 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 03:21:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85368847] [2023-08-30 03:21:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85368847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:21:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622238170] [2023-08-30 03:21:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:03,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 252 [2023-08-30 03:21:03,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 03:21:03,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:03,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 252 [2023-08-30 03:21:03,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:03,425 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-08-30 03:21:03,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 27 events. 6/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 60 event pairs, 5 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 50. Up to 22 conditions per place. [2023-08-30 03:21:03,426 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 10 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-08-30 03:21:03,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 15 transitions, 56 flow [2023-08-30 03:21:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-30 03:21:03,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-08-30 03:21:03,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-30 03:21:03,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-30 03:21:03,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:03,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-30 03:21:03,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 03:21:03,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,435 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 30 flow. Second operand 3 states and 300 transitions. [2023-08-30 03:21:03,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 15 transitions, 56 flow [2023-08-30 03:21:03,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:21:03,436 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 46 flow [2023-08-30 03:21:03,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-08-30 03:21:03,437 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2023-08-30 03:21:03,438 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 46 flow [2023-08-30 03:21:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 03:21:03,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:03,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:21:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:21:03,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:03,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 436085, now seen corresponding path program 1 times [2023-08-30 03:21:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:03,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058176289] [2023-08-30 03:21:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,490 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 03:21:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058176289] [2023-08-30 03:21:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058176289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:21:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447294376] [2023-08-30 03:21:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:03,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:03,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 252 [2023-08-30 03:21:03,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:21:03,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:03,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 252 [2023-08-30 03:21:03,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:03,534 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-30 03:21:03,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:03,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 25 events. 5/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 45 event pairs, 2 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 60. Up to 13 conditions per place. [2023-08-30 03:21:03,536 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 7 selfloop transitions, 4 changer transitions 3/16 dead transitions. [2023-08-30 03:21:03,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 76 flow [2023-08-30 03:21:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:03,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-30 03:21:03,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2023-08-30 03:21:03,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-30 03:21:03,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-30 03:21:03,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:03,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-30 03:21:03,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 03:21:03,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,541 INFO L175 Difference]: Start difference. First operand has 18 places, 15 transitions, 46 flow. Second operand 3 states and 296 transitions. [2023-08-30 03:21:03,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 76 flow [2023-08-30 03:21:03,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:21:03,541 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 46 flow [2023-08-30 03:21:03,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-30 03:21:03,543 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-30 03:21:03,543 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 46 flow [2023-08-30 03:21:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:21:03,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:03,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:21:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:21:03,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:03,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 13229517, now seen corresponding path program 1 times [2023-08-30 03:21:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664037774] [2023-08-30 03:21:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,734 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 03:21:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664037774] [2023-08-30 03:21:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664037774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:21:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91425999] [2023-08-30 03:21:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:03,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-30 03:21:03,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 03:21:03,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:03,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-30 03:21:03,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:03,774 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-08-30 03:21:03,774 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 03:21:03,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 17 events. 3/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 3 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 46. Up to 14 conditions per place. [2023-08-30 03:21:03,774 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 7 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-30 03:21:03,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 55 flow [2023-08-30 03:21:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-08-30 03:21:03,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2023-08-30 03:21:03,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-08-30 03:21:03,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-08-30 03:21:03,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:03,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-08-30 03:21:03,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 03:21:03,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,780 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 46 flow. Second operand 3 states and 303 transitions. [2023-08-30 03:21:03,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 55 flow [2023-08-30 03:21:03,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 40 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 03:21:03,781 INFO L231 Difference]: Finished difference. Result has 16 places, 11 transitions, 26 flow [2023-08-30 03:21:03,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=11} [2023-08-30 03:21:03,782 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -7 predicate places. [2023-08-30 03:21:03,782 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 11 transitions, 26 flow [2023-08-30 03:21:03,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 03:21:03,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:03,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:21:03,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:21:03,782 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:03,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 13229518, now seen corresponding path program 1 times [2023-08-30 03:21:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790611363] [2023-08-30 03:21:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,875 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 03:21:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790611363] [2023-08-30 03:21:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790611363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:21:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270533854] [2023-08-30 03:21:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:03,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 252 [2023-08-30 03:21:03,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 11 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 03:21:03,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:03,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 252 [2023-08-30 03:21:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:03,917 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-30 03:21:03,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:03,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 14 events. 2/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 27. Up to 10 conditions per place. [2023-08-30 03:21:03,918 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 5 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-08-30 03:21:03,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 38 flow [2023-08-30 03:21:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-30 03:21:03,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2023-08-30 03:21:03,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-30 03:21:03,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-30 03:21:03,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:03,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-30 03:21:03,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:21:03,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:03,921 INFO L175 Difference]: Start difference. First operand has 16 places, 11 transitions, 26 flow. Second operand 3 states and 290 transitions. [2023-08-30 03:21:03,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 38 flow [2023-08-30 03:21:03,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 37 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:21:03,922 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 27 flow [2023-08-30 03:21:03,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-08-30 03:21:03,923 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -7 predicate places. [2023-08-30 03:21:03,923 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 27 flow [2023-08-30 03:21:03,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 03:21:03,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:03,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:21:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:21:03,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:03,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash -990771432, now seen corresponding path program 1 times [2023-08-30 03:21:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602458739] [2023-08-30 03:21:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:03,976 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 03:21:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:03,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602458739] [2023-08-30 03:21:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602458739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:21:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991389664] [2023-08-30 03:21:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:03,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:04,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 252 [2023-08-30 03:21:04,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 03:21:04,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:04,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 252 [2023-08-30 03:21:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:04,019 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 03:21:04,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:04,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 2/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 1 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 28. Up to 8 conditions per place. [2023-08-30 03:21:04,020 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 6 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-08-30 03:21:04,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 43 flow [2023-08-30 03:21:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-30 03:21:04,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2023-08-30 03:21:04,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-30 03:21:04,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-30 03:21:04,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:04,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-30 03:21:04,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 03:21:04,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:04,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:04,028 INFO L175 Difference]: Start difference. First operand has 16 places, 10 transitions, 27 flow. Second operand 3 states and 291 transitions. [2023-08-30 03:21:04,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 43 flow [2023-08-30 03:21:04,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 39 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:21:04,029 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 25 flow [2023-08-30 03:21:04,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-08-30 03:21:04,031 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -8 predicate places. [2023-08-30 03:21:04,031 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 25 flow [2023-08-30 03:21:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 03:21:04,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:04,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:21:04,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:21:04,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:04,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:04,034 INFO L85 PathProgramCache]: Analyzing trace with hash -990771431, now seen corresponding path program 1 times [2023-08-30 03:21:04,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:04,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381020124] [2023-08-30 03:21:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:04,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:04,132 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 03:21:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381020124] [2023-08-30 03:21:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381020124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:21:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90220637] [2023-08-30 03:21:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:21:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:21:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:21:04,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 252 [2023-08-30 03:21:04,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 03:21:04,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:04,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 252 [2023-08-30 03:21:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:04,166 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-30 03:21:04,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:04,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 1 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 28. Up to 8 conditions per place. [2023-08-30 03:21:04,167 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 6 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2023-08-30 03:21:04,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 41 flow [2023-08-30 03:21:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:21:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:21:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 03:21:04,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-30 03:21:04,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 03:21:04,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 03:21:04,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:04,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 03:21:04,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 03:21:04,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:04,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 03:21:04,171 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 25 flow. Second operand 3 states and 297 transitions. [2023-08-30 03:21:04,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 41 flow [2023-08-30 03:21:04,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 9 transitions, 37 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:21:04,172 INFO L231 Difference]: Finished difference. Result has 14 places, 8 transitions, 23 flow [2023-08-30 03:21:04,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=23, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2023-08-30 03:21:04,172 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -9 predicate places. [2023-08-30 03:21:04,172 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 8 transitions, 23 flow [2023-08-30 03:21:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 03:21:04,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:21:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:21:04,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:21:04,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-08-30 03:21:04,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:21:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash -649138538, now seen corresponding path program 1 times [2023-08-30 03:21:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:21:04,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062739025] [2023-08-30 03:21:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:21:04,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:21:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:21:04,267 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 03:21:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:21:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062739025] [2023-08-30 03:21:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062739025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:21:04,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:21:04,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:21:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537705542] [2023-08-30 03:21:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:21:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:21:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:21:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:21:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:21:04,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 252 [2023-08-30 03:21:04,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 8 transitions, 23 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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 03:21:04,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:21:04,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 252 [2023-08-30 03:21:04,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:21:04,321 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 03:21:04,321 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:21:04,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 1 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 27. Up to 7 conditions per place. [2023-08-30 03:21:04,322 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-30 03:21:04,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 8 transitions, 39 flow [2023-08-30 03:21:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:21:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:21:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-08-30 03:21:04,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3740079365079365 [2023-08-30 03:21:04,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-08-30 03:21:04,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-08-30 03:21:04,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:21:04,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-08-30 03:21:04,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 03:21:04,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 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 03:21:04,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 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 03:21:04,326 INFO L175 Difference]: Start difference. First operand has 14 places, 8 transitions, 23 flow. Second operand 4 states and 377 transitions. [2023-08-30 03:21:04,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 8 transitions, 39 flow [2023-08-30 03:21:04,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:21:04,327 INFO L231 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2023-08-30 03:21:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2023-08-30 03:21:04,328 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -9 predicate places. [2023-08-30 03:21:04,328 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2023-08-30 03:21:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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 03:21:04,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-08-30 03:21:04,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-08-30 03:21:04,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-08-30 03:21:04,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-08-30 03:21:04,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (8 of 13 remaining) [2023-08-30 03:21:04,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (7 of 13 remaining) [2023-08-30 03:21:04,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-08-30 03:21:04,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-08-30 03:21:04,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-08-30 03:21:04,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-08-30 03:21:04,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (2 of 13 remaining) [2023-08-30 03:21:04,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-08-30 03:21:04,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-08-30 03:21:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:21:04,340 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:21:04,346 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:21:04,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:21:04,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:21:04 BasicIcfg [2023-08-30 03:21:04,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:21:04,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:21:04,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:21:04,350 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:21:04,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:58" (3/4) ... [2023-08-30 03:21:04,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 03:21:04,356 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 03:21:04,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 03:21:04,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 03:21:04,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 03:21:04,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 03:21:04,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 03:21:04,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:21:04,388 INFO L158 Benchmark]: Toolchain (without parser) took 7229.54ms. Allocated memory was 79.7MB in the beginning and 144.7MB in the end (delta: 65.0MB). Free memory was 54.5MB in the beginning and 51.9MB in the end (delta: 2.7MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,388 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:21:04,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.67ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 43.8MB in the end (delta: 10.5MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.37ms. Allocated memory is still 79.7MB. Free memory was 43.4MB in the beginning and 40.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,388 INFO L158 Benchmark]: Boogie Preprocessor took 40.65ms. Allocated memory is still 79.7MB. Free memory was 40.5MB in the beginning and 38.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,389 INFO L158 Benchmark]: RCFGBuilder took 471.27ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 41.0MB in the end (delta: -3.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,389 INFO L158 Benchmark]: TraceAbstraction took 5948.15ms. Allocated memory was 79.7MB in the beginning and 144.7MB in the end (delta: 65.0MB). Free memory was 40.3MB in the beginning and 55.0MB in the end (delta: -14.8MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,389 INFO L158 Benchmark]: Witness Printer took 37.12ms. Allocated memory is still 144.7MB. Free memory was 55.0MB in the beginning and 51.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:21:04,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.67ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 43.8MB in the end (delta: 10.5MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.37ms. Allocated memory is still 79.7MB. Free memory was 43.4MB in the beginning and 40.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.65ms. Allocated memory is still 79.7MB. Free memory was 40.5MB in the beginning and 38.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.27ms. Allocated memory is still 79.7MB. Free memory was 38.0MB in the beginning and 41.0MB in the end (delta: -3.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5948.15ms. Allocated memory was 79.7MB in the beginning and 144.7MB in the end (delta: 65.0MB). Free memory was 40.3MB in the beginning and 55.0MB in the end (delta: -14.8MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Witness Printer took 37.12ms. Allocated memory is still 144.7MB. Free memory was 55.0MB in the beginning and 51.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 107 PlacesBefore, 23 PlacesAfterwards, 109 TransitionsBefore, 21 TransitionsAfterwards, 600 CoEnabledTransitionPairs, 8 FixpointIterations, 93 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 142 TotalNumberOfCompositions, 564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 564, independent: 564, independent conditional: 0, independent unconditional: 564, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 337, independent: 337, independent conditional: 0, independent unconditional: 337, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 564, independent: 227, independent conditional: 0, independent unconditional: 227, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 337, unknown conditional: 0, unknown unconditional: 337] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1724]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: 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, 121 locations, 13 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: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 108 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 343 IncrementalHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 2 mSDtfsCounter, 343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 03:21:04,414 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