./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:35:45,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:35:45,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:35:45,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:35:45,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:35:45,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:35:45,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:35:45,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:35:45,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:35:45,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:35:45,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:35:45,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:35:45,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:35:45,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:35:45,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:35:45,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:35:45,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:35:45,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:35:45,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:35:45,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:35:45,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:35:45,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:35:45,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:35:45,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:35:45,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:35:45,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:35:45,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:35:45,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:35:45,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:35:45,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:35:45,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:35:45,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:35:45,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:35:45,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:35:45,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:35:45,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:35:45,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:35:45,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:35:45,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:35:45,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:35:45,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:35:45,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:35:45,660 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:35:45,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:35:45,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:35:45,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:35:45,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:35:45,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:35:45,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:35:45,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:35:45,664 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:35:45,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:35:45,664 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:35:45,665 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:35:45,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:35:45,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:35:45,666 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:35:45,666 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:35:45,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:35:45,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:35:45,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:35:45,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:35:45,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:35:45,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:35:45,668 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:35:45,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:35:45,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:35:45,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:35:45,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:35:45,911 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:35:45,911 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:35:45,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-29 21:35:46,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:35:47,036 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:35:47,037 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-29 21:35:47,045 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/477cc6ba0/9621c0af4fc742a5a83324aab830a84f/FLAG27803f2c6 [2023-08-29 21:35:47,052 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/477cc6ba0/9621c0af4fc742a5a83324aab830a84f [2023-08-29 21:35:47,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:35:47,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:35:47,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:35:47,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:35:47,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:35:47,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa5a4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47, skipping insertion in model container [2023-08-29 21:35:47,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:35:47,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:35:47,200 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-29 21:35:47,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:35:47,327 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:35:47,336 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-08-29 21:35:47,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:35:47,397 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:35:47,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47 WrapperNode [2023-08-29 21:35:47,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:35:47,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:35:47,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:35:47,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:35:47,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,424 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-08-29 21:35:47,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:35:47,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:35:47,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:35:47,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:35:47,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,450 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:35:47,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:35:47,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:35:47,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:35:47,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (1/1) ... [2023-08-29 21:35:47,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:35:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:35:47,493 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) [2023-08-29 21:35:47,512 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 [2023-08-29 21:35:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:35:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-29 21:35:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-29 21:35:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:35:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:35:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:35:47,524 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:35:47,643 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:35:47,645 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:35:47,842 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:35:47,847 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:35:47,856 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 21:35:47,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:47 BoogieIcfgContainer [2023-08-29 21:35:47,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:35:47,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:35:47,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:35:47,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:35:47,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:35:47" (1/3) ... [2023-08-29 21:35:47,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7377db7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:35:47, skipping insertion in model container [2023-08-29 21:35:47,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:47" (2/3) ... [2023-08-29 21:35:47,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7377db7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:35:47, skipping insertion in model container [2023-08-29 21:35:47,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:47" (3/3) ... [2023-08-29 21:35:47,866 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-29 21:35:47,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:35:47,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-08-29 21:35:47,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:35:47,936 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:35:47,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 154 transitions, 313 flow [2023-08-29 21:35:48,002 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2023-08-29 21:35:48,003 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 153 events. 10/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 353 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-29 21:35:48,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 154 transitions, 313 flow [2023-08-29 21:35:48,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 153 transitions, 309 flow [2023-08-29 21:35:48,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:35:48,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 153 transitions, 309 flow [2023-08-29 21:35:48,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 153 transitions, 309 flow [2023-08-29 21:35:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 153 transitions, 309 flow [2023-08-29 21:35:48,071 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2023-08-29 21:35:48,071 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:48,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 153 events. 10/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 353 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-29 21:35:48,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 5984 [2023-08-29 21:35:52,438 INFO L134 LiptonReduction]: Checked pairs total: 11484 [2023-08-29 21:35:52,438 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-29 21:35:52,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:35:52,451 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;@4c1a5b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:35:52,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-29 21:35:52,453 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:35:52,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:52,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:52,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:35:52,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:52,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash 626, now seen corresponding path program 1 times [2023-08-29 21:35:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202199143] [2023-08-29 21:35:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:52,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202199143] [2023-08-29 21:35:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202199143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:52,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:52,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:35:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148824317] [2023-08-29 21:35:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:35:52,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:35:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:35:52,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 324 [2023-08-29 21:35:52,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 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) [2023-08-29 21:35:52,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:52,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 324 [2023-08-29 21:35:52,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:52,641 INFO L130 PetriNetUnfolder]: 190/387 cut-off events. [2023-08-29 21:35:52,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:52,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 387 events. 190/387 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1802 event pairs, 129 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 727. Up to 345 conditions per place. [2023-08-29 21:35:52,644 INFO L137 encePairwiseOnDemand]: 310/324 looper letters, 29 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-08-29 21:35:52,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 133 flow [2023-08-29 21:35:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:35:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:35:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 333 transitions. [2023-08-29 21:35:52,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-08-29 21:35:52,653 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 333 transitions. [2023-08-29 21:35:52,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 333 transitions. [2023-08-29 21:35:52,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:52,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 333 transitions. [2023-08-29 21:35:52,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.5) internal successors, (333), 2 states have internal predecessors, (333), 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) [2023-08-29 21:35:52,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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) [2023-08-29 21:35:52,662 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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) [2023-08-29 21:35:52,663 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 103 flow. Second operand 2 states and 333 transitions. [2023-08-29 21:35:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 133 flow [2023-08-29 21:35:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:52,666 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 74 flow [2023-08-29 21:35:52,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-08-29 21:35:52,669 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2023-08-29 21:35:52,669 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 74 flow [2023-08-29 21:35:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 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) [2023-08-29 21:35:52,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:52,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:35:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:35:52,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:52,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 18984256, now seen corresponding path program 1 times [2023-08-29 21:35:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030806957] [2023-08-29 21:35:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030806957] [2023-08-29 21:35:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030806957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:52,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346419571] [2023-08-29 21:35:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:52,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 324 [2023-08-29 21:35:52,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-29 21:35:52,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:52,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 324 [2023-08-29 21:35:52,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:52,994 INFO L130 PetriNetUnfolder]: 174/345 cut-off events. [2023-08-29 21:35:52,995 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:52,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 345 events. 174/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1566 event pairs, 90 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 661. Up to 254 conditions per place. [2023-08-29 21:35:53,001 INFO L137 encePairwiseOnDemand]: 320/324 looper letters, 40 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-29 21:35:53,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 188 flow [2023-08-29 21:35:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-29 21:35:53,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897119341563786 [2023-08-29 21:35:53,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-29 21:35:53,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-29 21:35:53,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:53,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-29 21:35:53,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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) [2023-08-29 21:35:53,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,012 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 74 flow. Second operand 3 states and 476 transitions. [2023-08-29 21:35:53,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 188 flow [2023-08-29 21:35:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:35:53,013 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 78 flow [2023-08-29 21:35:53,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-08-29 21:35:53,014 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -12 predicate places. [2023-08-29 21:35:53,014 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 78 flow [2023-08-29 21:35:53,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-29 21:35:53,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:53,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:35:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:35:53,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:53,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 18984255, now seen corresponding path program 1 times [2023-08-29 21:35:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:53,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451581236] [2023-08-29 21:35:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:53,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451581236] [2023-08-29 21:35:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451581236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:53,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126515526] [2023-08-29 21:35:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:53,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 324 [2023-08-29 21:35:53,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-29 21:35:53,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:53,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 324 [2023-08-29 21:35:53,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:53,259 INFO L130 PetriNetUnfolder]: 158/319 cut-off events. [2023-08-29 21:35:53,259 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-29 21:35:53,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 319 events. 158/319 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1361 event pairs, 103 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 634. Up to 284 conditions per place. [2023-08-29 21:35:53,261 INFO L137 encePairwiseOnDemand]: 322/324 looper letters, 26 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-29 21:35:53,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 130 flow [2023-08-29 21:35:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-29 21:35:53,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2023-08-29 21:35:53,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-29 21:35:53,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-29 21:35:53,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:53,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-29 21:35:53,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-29 21:35:53,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,266 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 78 flow. Second operand 3 states and 460 transitions. [2023-08-29 21:35:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 130 flow [2023-08-29 21:35:53,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:53,268 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 72 flow [2023-08-29 21:35:53,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-29 21:35:53,268 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2023-08-29 21:35:53,268 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 72 flow [2023-08-29 21:35:53,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-29 21:35:53,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:53,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:35:53,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:35:53,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:53,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash 18984230, now seen corresponding path program 1 times [2023-08-29 21:35:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682694313] [2023-08-29 21:35:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:53,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:53,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682694313] [2023-08-29 21:35:53,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682694313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:53,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:53,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136982376] [2023-08-29 21:35:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:53,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:53,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 324 [2023-08-29 21:35:53,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-29 21:35:53,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:53,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 324 [2023-08-29 21:35:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:53,414 INFO L130 PetriNetUnfolder]: 142/281 cut-off events. [2023-08-29 21:35:53,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:53,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 281 events. 142/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1186 event pairs, 77 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 538. Up to 224 conditions per place. [2023-08-29 21:35:53,416 INFO L137 encePairwiseOnDemand]: 321/324 looper letters, 39 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-29 21:35:53,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 182 flow [2023-08-29 21:35:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-29 21:35:53,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2023-08-29 21:35:53,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-29 21:35:53,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-29 21:35:53,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:53,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-29 21:35:53,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2023-08-29 21:35:53,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:53,423 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 72 flow. Second operand 3 states and 465 transitions. [2023-08-29 21:35:53,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 182 flow [2023-08-29 21:35:53,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:53,425 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 73 flow [2023-08-29 21:35:53,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-29 21:35:53,426 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2023-08-29 21:35:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 73 flow [2023-08-29 21:35:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-29 21:35:53,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:53,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:35:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:35:53,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:53,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 588375069, now seen corresponding path program 1 times [2023-08-29 21:35:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127747636] [2023-08-29 21:35:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:53,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:53,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127747636] [2023-08-29 21:35:53,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127747636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:53,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:35:53,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978504685] [2023-08-29 21:35:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:53,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:53,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:53,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:53,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 324 [2023-08-29 21:35:53,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2023-08-29 21:35:53,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:53,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 324 [2023-08-29 21:35:53,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:53,655 INFO L130 PetriNetUnfolder]: 127/259 cut-off events. [2023-08-29 21:35:53,656 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 21:35:53,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 259 events. 127/259 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1059 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 516. Up to 186 conditions per place. [2023-08-29 21:35:53,657 INFO L137 encePairwiseOnDemand]: 305/324 looper letters, 51 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2023-08-29 21:35:53,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 69 transitions, 279 flow [2023-08-29 21:35:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:35:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:35:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-08-29 21:35:53,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44938271604938274 [2023-08-29 21:35:53,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-08-29 21:35:53,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-08-29 21:35:53,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:53,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-08-29 21:35:53,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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) [2023-08-29 21:35:53,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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) [2023-08-29 21:35:53,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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) [2023-08-29 21:35:53,663 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 73 flow. Second operand 5 states and 728 transitions. [2023-08-29 21:35:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 69 transitions, 279 flow [2023-08-29 21:35:53,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:53,664 INFO L231 Difference]: Finished difference. Result has 41 places, 46 transitions, 203 flow [2023-08-29 21:35:53,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=41, PETRI_TRANSITIONS=46} [2023-08-29 21:35:53,665 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-08-29 21:35:53,665 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 203 flow [2023-08-29 21:35:53,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2023-08-29 21:35:53,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:53,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:35:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:35:53,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:53,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 588375070, now seen corresponding path program 1 times [2023-08-29 21:35:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644443410] [2023-08-29 21:35:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644443410] [2023-08-29 21:35:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644443410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:35:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21942322] [2023-08-29 21:35:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:53,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:53,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 324 [2023-08-29 21:35:53,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2023-08-29 21:35:53,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:53,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 324 [2023-08-29 21:35:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:53,905 INFO L130 PetriNetUnfolder]: 127/242 cut-off events. [2023-08-29 21:35:53,905 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-29 21:35:53,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 242 events. 127/242 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 889 event pairs, 1 based on Foata normal form. 18/211 useless extension candidates. Maximal degree in co-relation 654. Up to 226 conditions per place. [2023-08-29 21:35:53,907 INFO L137 encePairwiseOnDemand]: 320/324 looper letters, 45 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-29 21:35:53,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 317 flow [2023-08-29 21:35:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 582 transitions. [2023-08-29 21:35:53,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2023-08-29 21:35:53,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 582 transitions. [2023-08-29 21:35:53,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 582 transitions. [2023-08-29 21:35:53,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:53,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 582 transitions. [2023-08-29 21:35:53,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 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) [2023-08-29 21:35:53,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:53,914 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:53,914 INFO L175 Difference]: Start difference. First operand has 41 places, 46 transitions, 203 flow. Second operand 4 states and 582 transitions. [2023-08-29 21:35:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 317 flow [2023-08-29 21:35:53,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 317 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:35:53,918 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 216 flow [2023-08-29 21:35:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-08-29 21:35:53,920 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-29 21:35:53,920 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 216 flow [2023-08-29 21:35:53,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2023-08-29 21:35:53,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:53,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:35:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:35:53,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:53,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1059761070, now seen corresponding path program 1 times [2023-08-29 21:35:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18831022] [2023-08-29 21:35:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18831022] [2023-08-29 21:35:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18831022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109799486] [2023-08-29 21:35:54,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:54,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:54,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:54,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 324 [2023-08-29 21:35:54,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-29 21:35:54,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:54,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 324 [2023-08-29 21:35:54,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:54,275 INFO L130 PetriNetUnfolder]: 137/265 cut-off events. [2023-08-29 21:35:54,276 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-08-29 21:35:54,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 265 events. 137/265 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 913 event pairs, 46 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 763. Up to 213 conditions per place. [2023-08-29 21:35:54,277 INFO L137 encePairwiseOnDemand]: 319/324 looper letters, 55 selfloop transitions, 5 changer transitions 2/67 dead transitions. [2023-08-29 21:35:54,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 422 flow [2023-08-29 21:35:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-08-29 21:35:54,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498456790123457 [2023-08-29 21:35:54,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-08-29 21:35:54,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-08-29 21:35:54,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:54,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-08-29 21:35:54,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 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) [2023-08-29 21:35:54,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:54,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:54,282 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 216 flow. Second operand 4 states and 583 transitions. [2023-08-29 21:35:54,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 422 flow [2023-08-29 21:35:54,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 415 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:54,285 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 262 flow [2023-08-29 21:35:54,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-08-29 21:35:54,285 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-29 21:35:54,285 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 262 flow [2023-08-29 21:35:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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) [2023-08-29 21:35:54,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:54,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:54,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:35:54,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:54,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1509281069, now seen corresponding path program 1 times [2023-08-29 21:35:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598045669] [2023-08-29 21:35:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:54,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:54,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:54,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598045669] [2023-08-29 21:35:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598045669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39750393] [2023-08-29 21:35:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:54,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 324 [2023-08-29 21:35:54,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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) [2023-08-29 21:35:54,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:54,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 324 [2023-08-29 21:35:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:54,564 INFO L130 PetriNetUnfolder]: 137/257 cut-off events. [2023-08-29 21:35:54,564 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2023-08-29 21:35:54,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 257 events. 137/257 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 824 event pairs, 12 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 783. Up to 238 conditions per place. [2023-08-29 21:35:54,565 INFO L137 encePairwiseOnDemand]: 316/324 looper letters, 45 selfloop transitions, 4 changer transitions 1/51 dead transitions. [2023-08-29 21:35:54,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 344 flow [2023-08-29 21:35:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-29 21:35:54,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2023-08-29 21:35:54,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-29 21:35:54,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-29 21:35:54,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:54,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-29 21:35:54,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-08-29 21:35:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:54,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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) [2023-08-29 21:35:54,570 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 262 flow. Second operand 4 states and 564 transitions. [2023-08-29 21:35:54,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 344 flow [2023-08-29 21:35:54,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:54,572 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 220 flow [2023-08-29 21:35:54,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-29 21:35:54,572 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-29 21:35:54,572 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 220 flow [2023-08-29 21:35:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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) [2023-08-29 21:35:54,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:54,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:35:54,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:54,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1420343386, now seen corresponding path program 1 times [2023-08-29 21:35:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91013365] [2023-08-29 21:35:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91013365] [2023-08-29 21:35:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91013365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77477523] [2023-08-29 21:35:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:54,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 324 [2023-08-29 21:35:54,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:54,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:54,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 324 [2023-08-29 21:35:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:54,789 INFO L130 PetriNetUnfolder]: 198/373 cut-off events. [2023-08-29 21:35:54,790 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-08-29 21:35:54,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 373 events. 198/373 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1253 event pairs, 36 based on Foata normal form. 14/334 useless extension candidates. Maximal degree in co-relation 1024. Up to 240 conditions per place. [2023-08-29 21:35:54,791 INFO L137 encePairwiseOnDemand]: 318/324 looper letters, 54 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-29 21:35:54,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 400 flow [2023-08-29 21:35:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-29 21:35:54,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670781893004115 [2023-08-29 21:35:54,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-29 21:35:54,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-29 21:35:54,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:54,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-29 21:35:54,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2023-08-29 21:35:54,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:54,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:54,796 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 220 flow. Second operand 3 states and 454 transitions. [2023-08-29 21:35:54,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 400 flow [2023-08-29 21:35:54,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:54,798 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 252 flow [2023-08-29 21:35:54,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2023-08-29 21:35:54,800 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-08-29 21:35:54,800 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 252 flow [2023-08-29 21:35:54,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:54,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:54,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 21:35:54,801 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:54,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1447421928, now seen corresponding path program 2 times [2023-08-29 21:35:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495166543] [2023-08-29 21:35:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:54,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495166543] [2023-08-29 21:35:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495166543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688636116] [2023-08-29 21:35:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:55,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 324 [2023-08-29 21:35:55,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:55,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:55,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 324 [2023-08-29 21:35:55,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:55,056 INFO L130 PetriNetUnfolder]: 30/92 cut-off events. [2023-08-29 21:35:55,056 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-29 21:35:55,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 92 events. 30/92 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 229 event pairs, 0 based on Foata normal form. 12/94 useless extension candidates. Maximal degree in co-relation 322. Up to 59 conditions per place. [2023-08-29 21:35:55,057 INFO L137 encePairwiseOnDemand]: 320/324 looper letters, 34 selfloop transitions, 6 changer transitions 2/43 dead transitions. [2023-08-29 21:35:55,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 320 flow [2023-08-29 21:35:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-29 21:35:55,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2023-08-29 21:35:55,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-29 21:35:55,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-29 21:35:55,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:55,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-29 21:35:55,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-29 21:35:55,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:55,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:55,061 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 252 flow. Second operand 3 states and 438 transitions. [2023-08-29 21:35:55,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 320 flow [2023-08-29 21:35:55,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:55,063 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 224 flow [2023-08-29 21:35:55,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-29 21:35:55,064 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-08-29 21:35:55,064 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 224 flow [2023-08-29 21:35:55,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:55,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:55,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:55,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 21:35:55,065 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:55,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash 303291462, now seen corresponding path program 1 times [2023-08-29 21:35:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:55,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571640816] [2023-08-29 21:35:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:55,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:55,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571640816] [2023-08-29 21:35:55,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571640816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:55,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:55,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 21:35:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206947218] [2023-08-29 21:35:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 21:35:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 21:35:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 21:35:55,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 324 [2023-08-29 21:35:55,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 224 flow. Second operand has 9 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 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) [2023-08-29 21:35:55,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:55,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 324 [2023-08-29 21:35:55,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:55,971 INFO L130 PetriNetUnfolder]: 50/162 cut-off events. [2023-08-29 21:35:55,971 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-29 21:35:55,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 162 events. 50/162 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 594 event pairs, 1 based on Foata normal form. 13/152 useless extension candidates. Maximal degree in co-relation 559. Up to 75 conditions per place. [2023-08-29 21:35:55,972 INFO L137 encePairwiseOnDemand]: 312/324 looper letters, 76 selfloop transitions, 18 changer transitions 1/96 dead transitions. [2023-08-29 21:35:55,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 703 flow [2023-08-29 21:35:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 21:35:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 21:35:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1229 transitions. [2023-08-29 21:35:55,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42146776406035663 [2023-08-29 21:35:55,976 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1229 transitions. [2023-08-29 21:35:55,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1229 transitions. [2023-08-29 21:35:55,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:55,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1229 transitions. [2023-08-29 21:35:55,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.55555555555554) internal successors, (1229), 9 states have internal predecessors, (1229), 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) [2023-08-29 21:35:55,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 324.0) internal successors, (3240), 10 states have internal predecessors, (3240), 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) [2023-08-29 21:35:55,981 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 324.0) internal successors, (3240), 10 states have internal predecessors, (3240), 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) [2023-08-29 21:35:55,981 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 224 flow. Second operand 9 states and 1229 transitions. [2023-08-29 21:35:55,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 703 flow [2023-08-29 21:35:55,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 659 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-29 21:35:55,983 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 398 flow [2023-08-29 21:35:55,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=398, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2023-08-29 21:35:55,984 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2023-08-29 21:35:55,984 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 398 flow [2023-08-29 21:35:55,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 130.33333333333334) internal successors, (1173), 9 states have internal predecessors, (1173), 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) [2023-08-29 21:35:55,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:55,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 21:35:55,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:55,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2087993547, now seen corresponding path program 1 times [2023-08-29 21:35:55,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:55,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275093458] [2023-08-29 21:35:55,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:55,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275093458] [2023-08-29 21:35:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275093458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 21:35:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134468067] [2023-08-29 21:35:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:56,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 21:35:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 21:35:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-29 21:35:56,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 324 [2023-08-29 21:35:56,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 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) [2023-08-29 21:35:56,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:56,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 324 [2023-08-29 21:35:56,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:56,572 INFO L130 PetriNetUnfolder]: 30/103 cut-off events. [2023-08-29 21:35:56,572 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2023-08-29 21:35:56,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 103 events. 30/103 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 295 event pairs, 1 based on Foata normal form. 10/110 useless extension candidates. Maximal degree in co-relation 413. Up to 72 conditions per place. [2023-08-29 21:35:56,573 INFO L137 encePairwiseOnDemand]: 313/324 looper letters, 51 selfloop transitions, 10 changer transitions 1/63 dead transitions. [2023-08-29 21:35:56,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 527 flow [2023-08-29 21:35:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 21:35:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 21:35:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1111 transitions. [2023-08-29 21:35:56,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42862654320987653 [2023-08-29 21:35:56,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1111 transitions. [2023-08-29 21:35:56,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1111 transitions. [2023-08-29 21:35:56,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:56,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1111 transitions. [2023-08-29 21:35:56,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.875) internal successors, (1111), 8 states have internal predecessors, (1111), 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) [2023-08-29 21:35:56,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 324.0) internal successors, (2916), 9 states have internal predecessors, (2916), 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) [2023-08-29 21:35:56,581 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 324.0) internal successors, (2916), 9 states have internal predecessors, (2916), 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) [2023-08-29 21:35:56,581 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 398 flow. Second operand 8 states and 1111 transitions. [2023-08-29 21:35:56,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 527 flow [2023-08-29 21:35:56,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 501 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-29 21:35:56,583 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 325 flow [2023-08-29 21:35:56,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-08-29 21:35:56,584 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2023-08-29 21:35:56,584 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 325 flow [2023-08-29 21:35:56,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 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) [2023-08-29 21:35:56,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:56,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:56,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 21:35:56,585 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:56,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash -342033520, now seen corresponding path program 1 times [2023-08-29 21:35:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347798813] [2023-08-29 21:35:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:56,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-29 21:35:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347798813] [2023-08-29 21:35:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347798813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:56,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:56,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:35:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93683165] [2023-08-29 21:35:56,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:56,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:56,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 324 [2023-08-29 21:35:56,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-29 21:35:56,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:56,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 324 [2023-08-29 21:35:56,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:56,709 INFO L130 PetriNetUnfolder]: 32/109 cut-off events. [2023-08-29 21:35:56,709 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-29 21:35:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 109 events. 32/109 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 303 event pairs, 2 based on Foata normal form. 3/109 useless extension candidates. Maximal degree in co-relation 416. Up to 61 conditions per place. [2023-08-29 21:35:56,710 INFO L137 encePairwiseOnDemand]: 318/324 looper letters, 43 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-08-29 21:35:56,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 468 flow [2023-08-29 21:35:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-29 21:35:56,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619341563786008 [2023-08-29 21:35:56,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-29 21:35:56,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-29 21:35:56,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:56,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-29 21:35:56,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2023-08-29 21:35:56,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:56,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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) [2023-08-29 21:35:56,714 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 325 flow. Second operand 3 states and 449 transitions. [2023-08-29 21:35:56,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 468 flow [2023-08-29 21:35:56,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 448 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-29 21:35:56,716 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 352 flow [2023-08-29 21:35:56,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-29 21:35:56,716 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2023-08-29 21:35:56,717 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 352 flow [2023-08-29 21:35:56,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-29 21:35:56,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:56,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 21:35:56,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:35:56,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -342110364, now seen corresponding path program 2 times [2023-08-29 21:35:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:56,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941733067] [2023-08-29 21:35:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941733067] [2023-08-29 21:35:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941733067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:35:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591696288] [2023-08-29 21:35:57,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:35:57,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:35:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:35:57,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:35:57,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 21:35:57,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 21:35:57,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:35:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-29 21:35:57,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:35:57,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-29 21:35:57,369 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:35:57,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-29 21:35:57,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-08-29 21:35:57,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2023-08-29 21:35:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:57,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:35:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:58,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591696288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:35:58,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:35:58,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 32 [2023-08-29 21:35:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978080080] [2023-08-29 21:35:58,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:35:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-29 21:35:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-29 21:35:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2023-08-29 21:36:01,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 324 [2023-08-29 21:36:01,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 352 flow. Second operand has 33 states, 33 states have (on average 116.54545454545455) internal successors, (3846), 33 states have internal predecessors, (3846), 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) [2023-08-29 21:36:01,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:36:01,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 324 [2023-08-29 21:36:01,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:36:02,590 INFO L130 PetriNetUnfolder]: 40/138 cut-off events. [2023-08-29 21:36:02,590 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2023-08-29 21:36:02,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 138 events. 40/138 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 379 event pairs, 1 based on Foata normal form. 5/143 useless extension candidates. Maximal degree in co-relation 551. Up to 56 conditions per place. [2023-08-29 21:36:02,591 INFO L137 encePairwiseOnDemand]: 313/324 looper letters, 63 selfloop transitions, 30 changer transitions 1/95 dead transitions. [2023-08-29 21:36:02,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 806 flow [2023-08-29 21:36:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 21:36:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 21:36:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1910 transitions. [2023-08-29 21:36:02,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36844135802469136 [2023-08-29 21:36:02,595 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1910 transitions. [2023-08-29 21:36:02,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1910 transitions. [2023-08-29 21:36:02,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:36:02,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1910 transitions. [2023-08-29 21:36:02,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.375) internal successors, (1910), 16 states have internal predecessors, (1910), 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) [2023-08-29 21:36:02,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 324.0) internal successors, (5508), 17 states have internal predecessors, (5508), 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) [2023-08-29 21:36:02,605 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 324.0) internal successors, (5508), 17 states have internal predecessors, (5508), 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) [2023-08-29 21:36:02,605 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 352 flow. Second operand 16 states and 1910 transitions. [2023-08-29 21:36:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 806 flow [2023-08-29 21:36:02,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 782 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 21:36:02,608 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 543 flow [2023-08-29 21:36:02,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=543, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2023-08-29 21:36:02,609 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2023-08-29 21:36:02,609 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 543 flow [2023-08-29 21:36:02,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 116.54545454545455) internal successors, (3846), 33 states have internal predecessors, (3846), 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) [2023-08-29 21:36:02,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:36:02,619 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:36:02,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:36:02,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-29 21:36:02,829 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:36:02,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:36:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1927089900, now seen corresponding path program 1 times [2023-08-29 21:36:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:36:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927738682] [2023-08-29 21:36:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:36:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:36:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:36:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:36:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:36:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927738682] [2023-08-29 21:36:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927738682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:36:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027540811] [2023-08-29 21:36:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:36:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:36:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:36:03,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:36:03,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 21:36:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:36:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-29 21:36:03,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:36:03,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-29 21:36:03,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:36:03,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 21:36:03,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-29 21:36:03,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-29 21:36:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:36:03,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:36:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:36:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027540811] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:36:03,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:36:03,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 10] total 25 [2023-08-29 21:36:03,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616298740] [2023-08-29 21:36:03,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:36:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-29 21:36:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:36:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-29 21:36:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-08-29 21:36:05,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 324 [2023-08-29 21:36:05,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 543 flow. Second operand has 27 states, 27 states have (on average 128.11111111111111) internal successors, (3459), 27 states have internal predecessors, (3459), 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) [2023-08-29 21:36:05,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:36:05,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 324 [2023-08-29 21:36:05,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:36:05,921 INFO L130 PetriNetUnfolder]: 62/220 cut-off events. [2023-08-29 21:36:05,921 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-08-29 21:36:05,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 220 events. 62/220 cut-off events. For 770/770 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 710 event pairs, 4 based on Foata normal form. 32/252 useless extension candidates. Maximal degree in co-relation 992. Up to 101 conditions per place. [2023-08-29 21:36:05,924 INFO L137 encePairwiseOnDemand]: 309/324 looper letters, 47 selfloop transitions, 33 changer transitions 59/140 dead transitions. [2023-08-29 21:36:05,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 140 transitions, 1353 flow [2023-08-29 21:36:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-29 21:36:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-29 21:36:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3388 transitions. [2023-08-29 21:36:05,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021842355175689 [2023-08-29 21:36:05,934 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3388 transitions. [2023-08-29 21:36:05,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3388 transitions. [2023-08-29 21:36:05,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:36:05,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3388 transitions. [2023-08-29 21:36:05,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 130.30769230769232) internal successors, (3388), 26 states have internal predecessors, (3388), 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) [2023-08-29 21:36:05,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 324.0) internal successors, (8748), 27 states have internal predecessors, (8748), 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) [2023-08-29 21:36:05,953 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 324.0) internal successors, (8748), 27 states have internal predecessors, (8748), 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) [2023-08-29 21:36:05,953 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 543 flow. Second operand 26 states and 3388 transitions. [2023-08-29 21:36:05,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 140 transitions, 1353 flow [2023-08-29 21:36:05,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 1221 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-08-29 21:36:05,959 INFO L231 Difference]: Finished difference. Result has 95 places, 56 transitions, 523 flow [2023-08-29 21:36:05,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=523, PETRI_PLACES=95, PETRI_TRANSITIONS=56} [2023-08-29 21:36:05,959 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 47 predicate places. [2023-08-29 21:36:05,959 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 56 transitions, 523 flow [2023-08-29 21:36:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 128.11111111111111) internal successors, (3459), 27 states have internal predecessors, (3459), 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) [2023-08-29 21:36:05,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:36:05,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:36:05,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:36:06,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 21:36:06,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-08-29 21:36:06,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:36:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1926005051, now seen corresponding path program 1 times [2023-08-29 21:36:06,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:36:06,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889440153] [2023-08-29 21:36:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:36:06,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:36:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:36:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 21:36:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:36:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889440153] [2023-08-29 21:36:06,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889440153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 21:36:06,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278028831] [2023-08-29 21:36:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:36:06,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:36:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:36:06,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 21:36:06,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 21:36:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:36:06,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-29 21:36:06,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:36:06,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-29 21:36:06,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-29 21:36:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-29 21:36:06,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:36:07,149 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-29 21:36:07,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-08-29 21:36:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-29 21:36:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278028831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:36:07,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 21:36:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2023-08-29 21:36:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667883369] [2023-08-29 21:36:07,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 21:36:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 21:36:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:36:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 21:36:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2023-08-29 21:36:09,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 324 [2023-08-29 21:36:09,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 56 transitions, 523 flow. Second operand has 31 states, 31 states have (on average 128.32258064516128) internal successors, (3978), 31 states have internal predecessors, (3978), 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) [2023-08-29 21:36:09,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:36:09,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 324 [2023-08-29 21:36:09,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:36:10,047 INFO L130 PetriNetUnfolder]: 23/139 cut-off events. [2023-08-29 21:36:10,047 INFO L131 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2023-08-29 21:36:10,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 139 events. 23/139 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 398 event pairs, 4 based on Foata normal form. 2/141 useless extension candidates. Maximal degree in co-relation 656. Up to 68 conditions per place. [2023-08-29 21:36:10,048 INFO L137 encePairwiseOnDemand]: 312/324 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-08-29 21:36:10,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 68 transitions, 740 flow [2023-08-29 21:36:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 21:36:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 21:36:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1931 transitions. [2023-08-29 21:36:10,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973251028806584 [2023-08-29 21:36:10,053 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1931 transitions. [2023-08-29 21:36:10,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1931 transitions. [2023-08-29 21:36:10,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:36:10,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1931 transitions. [2023-08-29 21:36:10,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 128.73333333333332) internal successors, (1931), 15 states have internal predecessors, (1931), 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) [2023-08-29 21:36:10,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 324.0) internal successors, (5184), 16 states have internal predecessors, (5184), 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) [2023-08-29 21:36:10,062 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 324.0) internal successors, (5184), 16 states have internal predecessors, (5184), 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) [2023-08-29 21:36:10,062 INFO L175 Difference]: Start difference. First operand has 95 places, 56 transitions, 523 flow. Second operand 15 states and 1931 transitions. [2023-08-29 21:36:10,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 68 transitions, 740 flow [2023-08-29 21:36:10,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 68 transitions, 624 flow, removed 32 selfloop flow, removed 18 redundant places. [2023-08-29 21:36:10,066 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2023-08-29 21:36:10,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2023-08-29 21:36:10,067 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2023-08-29 21:36:10,067 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2023-08-29 21:36:10,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 128.32258064516128) internal successors, (3978), 31 states have internal predecessors, (3978), 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) [2023-08-29 21:36:10,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 40 remaining) [2023-08-29 21:36:10,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (35 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 40 remaining) [2023-08-29 21:36:10,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 40 remaining) [2023-08-29 21:36:10,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONMEMORY_LEAK (21 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONMEMORY_LEAK (18 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 40 remaining) [2023-08-29 21:36:10,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 40 remaining) [2023-08-29 21:36:10,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 40 remaining) [2023-08-29 21:36:10,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 40 remaining) [2023-08-29 21:36:10,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 40 remaining) [2023-08-29 21:36:10,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 40 remaining) [2023-08-29 21:36:10,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 40 remaining) [2023-08-29 21:36:10,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 40 remaining) [2023-08-29 21:36:10,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 40 remaining) [2023-08-29 21:36:10,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 40 remaining) [2023-08-29 21:36:10,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 40 remaining) [2023-08-29 21:36:10,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 40 remaining) [2023-08-29 21:36:10,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 40 remaining) [2023-08-29 21:36:10,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 21:36:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 21:36:10,281 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:36:10,284 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:36:10,284 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:36:10,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:36:10 BasicIcfg [2023-08-29 21:36:10,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:36:10,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:36:10,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:36:10,287 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:36:10,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:47" (3/4) ... [2023-08-29 21:36:10,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:36:10,292 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-08-29 21:36:10,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-29 21:36:10,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 21:36:10,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:36:10,298 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-29 21:36:10,324 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:36:10,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:36:10,325 INFO L158 Benchmark]: Toolchain (without parser) took 23269.91ms. Allocated memory was 60.8MB in the beginning and 230.7MB in the end (delta: 169.9MB). Free memory was 29.4MB in the beginning and 118.3MB in the end (delta: -88.9MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,325 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:36:10,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.80ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 35.7MB in the end (delta: -6.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.55ms. Allocated memory is still 60.8MB. Free memory was 35.5MB in the beginning and 33.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,326 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 60.8MB. Free memory was 33.3MB in the beginning and 31.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,326 INFO L158 Benchmark]: RCFGBuilder took 399.05ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 40.1MB in the end (delta: -8.5MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,326 INFO L158 Benchmark]: TraceAbstraction took 22425.72ms. Allocated memory was 73.4MB in the beginning and 230.7MB in the end (delta: 157.3MB). Free memory was 39.2MB in the beginning and 120.4MB in the end (delta: -81.1MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,327 INFO L158 Benchmark]: Witness Printer took 37.98ms. Allocated memory is still 230.7MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:36:10,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.80ms. Allocated memory is still 60.8MB. Free memory was 29.3MB in the beginning and 35.7MB in the end (delta: -6.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.55ms. Allocated memory is still 60.8MB. Free memory was 35.5MB in the beginning and 33.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 60.8MB. Free memory was 33.3MB in the beginning and 31.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 399.05ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 40.1MB in the end (delta: -8.5MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22425.72ms. Allocated memory was 73.4MB in the beginning and 230.7MB in the end (delta: 157.3MB). Free memory was 39.2MB in the beginning and 120.4MB in the end (delta: -81.1MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. * Witness Printer took 37.98ms. Allocated memory is still 230.7MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). 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, 147 PlacesBefore, 48 PlacesAfterwards, 153 TransitionsBefore, 50 TransitionsAfterwards, 5984 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 4 ChoiceCompositions, 170 TotalNumberOfCompositions, 11484 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7009, independent: 6751, independent conditional: 0, independent unconditional: 6751, dependent: 258, dependent conditional: 0, dependent unconditional: 258, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3699, independent: 3615, independent conditional: 0, independent unconditional: 3615, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7009, independent: 3136, independent conditional: 0, independent unconditional: 3136, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 3699, unknown conditional: 0, unknown unconditional: 3699] , Statistics on independence cache: Total cache size (in pairs): 179, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 743]: 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: -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: -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: 19]: 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: 19]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 208 locations, 40 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: 22.3s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6507 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5324 mSDsluCounter, 6937 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6848 mSDsCounter, 194 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22685 IncrementalHoareTripleChecker+Invalid, 22879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 194 mSolverCounterUnsat, 89 mSDtfsCounter, 22685 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=14, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 280 ConstructedInterpolants, 28 QuantifiedInterpolants, 3797 SizeOfPredicates, 67 NumberOfNonLiveVariables, 866 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 61/89 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:36:10,355 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