./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --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 01:16:16,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 01:16:16,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 01:16:16,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 01:16:16,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 01:16:16,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 01:16:16,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 01:16:16,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 01:16:16,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 01:16:16,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 01:16:16,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 01:16:16,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 01:16:16,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 01:16:16,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 01:16:16,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 01:16:16,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 01:16:16,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 01:16:16,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 01:16:16,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 01:16:16,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 01:16:16,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 01:16:16,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 01:16:16,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 01:16:16,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 01:16:16,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 01:16:16,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 01:16:16,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 01:16:16,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 01:16:16,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 01:16:16,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 01:16:16,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 01:16:16,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 01:16:16,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 01:16:16,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 01:16:16,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 01:16:16,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 01:16:16,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 01:16:16,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 01:16:16,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 01:16:16,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 01:16:16,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 01:16:16,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 01:16:16,653 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 01:16:16,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 01:16:16,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 01:16:16,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 01:16:16,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 01:16:16,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 01:16:16,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 01:16:16,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 01:16:16,656 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 01:16:16,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 01:16:16,657 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 01:16:16,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 01:16:16,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 01:16:16,658 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 01:16:16,659 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 01:16:16,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 01:16:16,659 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 01:16:16,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 01:16:16,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 01:16:16,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 01:16:16,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 01:16:16,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 01:16:16,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 01:16:16,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 01:16:16,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 01:16:16,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 01:16:16,662 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 01:16:16,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 01:16:16,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 01:16:16,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 01:16:16,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 01:16:16,981 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 01:16:16,981 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 01:16:16,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-29 01:16:18,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 01:16:18,514 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 01:16:18,515 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2023-08-29 01:16:18,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891798e28/1cf7dbe29af94ebbad4728fa9e8f9a90/FLAG026a84f5a [2023-08-29 01:16:18,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/891798e28/1cf7dbe29af94ebbad4728fa9e8f9a90 [2023-08-29 01:16:18,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 01:16:18,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 01:16:18,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 01:16:18,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 01:16:18,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 01:16:18,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:16:18" (1/1) ... [2023-08-29 01:16:18,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dda331c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:18, skipping insertion in model container [2023-08-29 01:16:18,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:16:18" (1/1) ... [2023-08-29 01:16:18,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 01:16:18,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 01:16:19,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i[78860,78873] [2023-08-29 01:16:19,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 01:16:19,147 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 01:16:19,261 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i[78860,78873] [2023-08-29 01:16:19,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 01:16:19,398 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 01:16:19,398 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 01:16:19,404 INFO L208 MainTranslator]: Completed translation [2023-08-29 01:16:19,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19 WrapperNode [2023-08-29 01:16:19,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 01:16:19,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 01:16:19,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 01:16:19,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 01:16:19,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,516 INFO L138 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 471 [2023-08-29 01:16:19,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 01:16:19,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 01:16:19,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 01:16:19,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 01:16:19,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 01:16:19,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 01:16:19,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 01:16:19,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 01:16:19,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (1/1) ... [2023-08-29 01:16:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 01:16:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:16:19,633 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 01:16:19,653 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 01:16:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 01:16:19,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 01:16:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 01:16:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 01:16:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 01:16:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-08-29 01:16:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-08-29 01:16:19,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 01:16:19,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 01:16:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 01:16:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 01:16:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 01:16:19,680 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 01:16:19,974 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 01:16:19,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 01:16:20,562 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 01:16:20,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 01:16:20,821 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-29 01:16:20,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:16:20 BoogieIcfgContainer [2023-08-29 01:16:20,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 01:16:20,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 01:16:20,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 01:16:20,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 01:16:20,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:16:18" (1/3) ... [2023-08-29 01:16:20,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481a531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:16:20, skipping insertion in model container [2023-08-29 01:16:20,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:19" (2/3) ... [2023-08-29 01:16:20,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481a531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:16:20, skipping insertion in model container [2023-08-29 01:16:20,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:16:20" (3/3) ... [2023-08-29 01:16:20,835 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2023-08-29 01:16:20,843 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 01:16:20,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 01:16:20,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-29 01:16:20,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 01:16:20,987 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 01:16:21,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,171 INFO L130 PetriNetUnfolder]: 19/336 cut-off events. [2023-08-29 01:16:21,171 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 01:16:21,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 336 events. 19/336 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 656 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 246. Up to 4 conditions per place. [2023-08-29 01:16:21,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 01:16:21,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 316 transitions, 640 flow [2023-08-29 01:16:21,293 INFO L130 PetriNetUnfolder]: 19/336 cut-off events. [2023-08-29 01:16:21,294 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 01:16:21,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 336 events. 19/336 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 656 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 246. Up to 4 conditions per place. [2023-08-29 01:16:21,302 INFO L119 LiptonReduction]: Number of co-enabled transitions 11492 [2023-08-29 01:17:07,617 INFO L134 LiptonReduction]: Checked pairs total: 34007 [2023-08-29 01:17:07,617 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-29 01:17:07,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 01:17:07,635 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5cc74401, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 01:17:07,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-29 01:17:07,636 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 01:17:07,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:17:07,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:07,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 01:17:07,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:07,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1708, now seen corresponding path program 1 times [2023-08-29 01:17:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714466138] [2023-08-29 01:17:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:07,850 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 01:17:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714466138] [2023-08-29 01:17:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714466138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 01:17:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123036877] [2023-08-29 01:17:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:07,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 01:17:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 01:17:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 01:17:07,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 617 [2023-08-29 01:17:07,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 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 01:17:07,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:07,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 617 [2023-08-29 01:17:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:08,102 INFO L130 PetriNetUnfolder]: 148/492 cut-off events. [2023-08-29 01:17:08,103 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2023-08-29 01:17:08,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 492 events. 148/492 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2019 event pairs, 110 based on Foata normal form. 12/411 useless extension candidates. Maximal degree in co-relation 758. Up to 294 conditions per place. [2023-08-29 01:17:08,109 INFO L137 encePairwiseOnDemand]: 588/617 looper letters, 39 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-08-29 01:17:08,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 240 flow [2023-08-29 01:17:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 01:17:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 01:17:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 604 transitions. [2023-08-29 01:17:08,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48946515397082657 [2023-08-29 01:17:08,141 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 604 transitions. [2023-08-29 01:17:08,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 604 transitions. [2023-08-29 01:17:08,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:08,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 604 transitions. [2023-08-29 01:17:08,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 302.0) internal successors, (604), 2 states have internal predecessors, (604), 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 01:17:08,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 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 01:17:08,158 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 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 01:17:08,160 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 222 flow. Second operand 2 states and 604 transitions. [2023-08-29 01:17:08,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 240 flow [2023-08-29 01:17:08,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:17:08,164 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 162 flow [2023-08-29 01:17:08,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-29 01:17:08,169 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-08-29 01:17:08,169 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 162 flow [2023-08-29 01:17:08,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 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 01:17:08,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:08,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 01:17:08,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:08,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash -252145545, now seen corresponding path program 1 times [2023-08-29 01:17:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463701338] [2023-08-29 01:17:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:08,390 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 01:17:08,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463701338] [2023-08-29 01:17:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463701338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:08,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:17:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803652341] [2023-08-29 01:17:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:17:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:17:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:17:08,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 617 [2023-08-29 01:17:08,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 01:17:08,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:08,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 617 [2023-08-29 01:17:08,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:08,778 INFO L130 PetriNetUnfolder]: 119/387 cut-off events. [2023-08-29 01:17:08,780 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 01:17:08,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 387 events. 119/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1544 event pairs, 44 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 654. Up to 134 conditions per place. [2023-08-29 01:17:08,783 INFO L137 encePairwiseOnDemand]: 612/617 looper letters, 64 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2023-08-29 01:17:08,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 107 transitions, 360 flow [2023-08-29 01:17:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:17:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:17:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-29 01:17:08,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597514856834144 [2023-08-29 01:17:08,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-29 01:17:08,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-29 01:17:08,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:08,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-29 01:17:08,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 01:17:08,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:08,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:08,810 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 162 flow. Second operand 3 states and 851 transitions. [2023-08-29 01:17:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 107 transitions, 360 flow [2023-08-29 01:17:08,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:17:08,814 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 168 flow [2023-08-29 01:17:08,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2023-08-29 01:17:08,815 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -23 predicate places. [2023-08-29 01:17:08,815 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 168 flow [2023-08-29 01:17:08,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 01:17:08,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:08,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:08,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 01:17:08,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:08,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1967971050, now seen corresponding path program 1 times [2023-08-29 01:17:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079660547] [2023-08-29 01:17:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:17:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079660547] [2023-08-29 01:17:08,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079660547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:17:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063960705] [2023-08-29 01:17:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:08,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:17:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:17:08,989 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 01:17:08,992 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 01:17:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:09,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 01:17:09,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:17:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:17:09,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 01:17:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063960705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:09,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 01:17:09,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-29 01:17:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653791507] [2023-08-29 01:17:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:09,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:17:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:17:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 01:17:09,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 617 [2023-08-29 01:17:09,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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 01:17:09,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:09,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 617 [2023-08-29 01:17:09,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:09,567 INFO L130 PetriNetUnfolder]: 119/427 cut-off events. [2023-08-29 01:17:09,568 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-29 01:17:09,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 427 events. 119/427 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1710 event pairs, 88 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 720. Up to 241 conditions per place. [2023-08-29 01:17:09,570 INFO L137 encePairwiseOnDemand]: 614/617 looper letters, 37 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-29 01:17:09,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 248 flow [2023-08-29 01:17:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:17:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:17:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-29 01:17:09,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44786601836844947 [2023-08-29 01:17:09,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-29 01:17:09,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-29 01:17:09,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:09,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-29 01:17:09,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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 01:17:09,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:09,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:09,580 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 168 flow. Second operand 3 states and 829 transitions. [2023-08-29 01:17:09,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 248 flow [2023-08-29 01:17:09,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 01:17:09,582 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 176 flow [2023-08-29 01:17:09,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-29 01:17:09,583 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -22 predicate places. [2023-08-29 01:17:09,584 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 176 flow [2023-08-29 01:17:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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 01:17:09,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:09,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:09,593 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 01:17:09,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:17:09,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:09,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:09,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1851737603, now seen corresponding path program 1 times [2023-08-29 01:17:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:09,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418005623] [2023-08-29 01:17:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:17:09,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:09,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418005623] [2023-08-29 01:17:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418005623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:17:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736553953] [2023-08-29 01:17:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:17:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:17:09,928 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 01:17:09,931 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 01:17:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:10,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 01:17:10,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:17:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:17:10,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 01:17:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:17:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736553953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 01:17:10,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 01:17:10,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-29 01:17:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158524918] [2023-08-29 01:17:10,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 01:17:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 01:17:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 01:17:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 01:17:10,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 617 [2023-08-29 01:17:10,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 255.25) internal successors, (2042), 8 states have internal predecessors, (2042), 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 01:17:10,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:10,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 617 [2023-08-29 01:17:10,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:10,587 INFO L130 PetriNetUnfolder]: 63/191 cut-off events. [2023-08-29 01:17:10,588 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:17:10,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 191 events. 63/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 486 event pairs, 0 based on Foata normal form. 24/190 useless extension candidates. Maximal degree in co-relation 382. Up to 102 conditions per place. [2023-08-29 01:17:10,589 INFO L137 encePairwiseOnDemand]: 612/617 looper letters, 58 selfloop transitions, 5 changer transitions 2/97 dead transitions. [2023-08-29 01:17:10,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 343 flow [2023-08-29 01:17:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:17:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:17:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1585 transitions. [2023-08-29 01:17:10,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281469475958941 [2023-08-29 01:17:10,594 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1585 transitions. [2023-08-29 01:17:10,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1585 transitions. [2023-08-29 01:17:10,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:10,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1585 transitions. [2023-08-29 01:17:10,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.1666666666667) internal successors, (1585), 6 states have internal predecessors, (1585), 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 01:17:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:10,606 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:10,606 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 176 flow. Second operand 6 states and 1585 transitions. [2023-08-29 01:17:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 343 flow [2023-08-29 01:17:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 337 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 01:17:10,610 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 161 flow [2023-08-29 01:17:10,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-08-29 01:17:10,610 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2023-08-29 01:17:10,611 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 161 flow [2023-08-29 01:17:10,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 255.25) internal successors, (2042), 8 states have internal predecessors, (2042), 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 01:17:10,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:10,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:10,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 01:17:10,818 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,SelfDestructingSolverStorable3 [2023-08-29 01:17:10,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:10,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2139521887, now seen corresponding path program 1 times [2023-08-29 01:17:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:10,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052623685] [2023-08-29 01:17:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:17:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052623685] [2023-08-29 01:17:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052623685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:11,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:17:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52602583] [2023-08-29 01:17:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:17:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:17:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:17:11,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 617 [2023-08-29 01:17:11,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 242.33333333333334) internal successors, (1454), 6 states have internal predecessors, (1454), 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 01:17:11,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:11,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 617 [2023-08-29 01:17:11,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:11,934 INFO L130 PetriNetUnfolder]: 106/298 cut-off events. [2023-08-29 01:17:11,934 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-29 01:17:11,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 298 events. 106/298 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 732 event pairs, 42 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 594. Up to 136 conditions per place. [2023-08-29 01:17:11,936 INFO L137 encePairwiseOnDemand]: 596/617 looper letters, 47 selfloop transitions, 18 changer transitions 0/79 dead transitions. [2023-08-29 01:17:11,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 323 flow [2023-08-29 01:17:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:17:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:17:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1506 transitions. [2023-08-29 01:17:11,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406807131280389 [2023-08-29 01:17:11,940 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1506 transitions. [2023-08-29 01:17:11,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1506 transitions. [2023-08-29 01:17:11,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:11,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1506 transitions. [2023-08-29 01:17:11,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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 01:17:11,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:11,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:11,951 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 161 flow. Second operand 6 states and 1506 transitions. [2023-08-29 01:17:11,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 323 flow [2023-08-29 01:17:11,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 311 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 01:17:11,953 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 204 flow [2023-08-29 01:17:11,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2023-08-29 01:17:11,954 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2023-08-29 01:17:11,955 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 204 flow [2023-08-29 01:17:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.33333333333334) internal successors, (1454), 6 states have internal predecessors, (1454), 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 01:17:11,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:11,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:11,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 01:17:11,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr14ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:11,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash -880309565, now seen corresponding path program 1 times [2023-08-29 01:17:11,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662229019] [2023-08-29 01:17:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:17:12,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662229019] [2023-08-29 01:17:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662229019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:17:12,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688307493] [2023-08-29 01:17:12,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:17:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:17:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:17:12,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 617 [2023-08-29 01:17:12,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 01:17:12,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:12,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 617 [2023-08-29 01:17:12,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:12,428 INFO L130 PetriNetUnfolder]: 98/338 cut-off events. [2023-08-29 01:17:12,429 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 01:17:12,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 338 events. 98/338 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 902 event pairs, 46 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 714. Up to 140 conditions per place. [2023-08-29 01:17:12,431 INFO L137 encePairwiseOnDemand]: 613/617 looper letters, 49 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-29 01:17:12,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 345 flow [2023-08-29 01:17:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:17:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:17:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2023-08-29 01:17:12,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543490005402485 [2023-08-29 01:17:12,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2023-08-29 01:17:12,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2023-08-29 01:17:12,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:12,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2023-08-29 01:17:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 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 01:17:12,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:12,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 01:17:12,439 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 204 flow. Second operand 3 states and 841 transitions. [2023-08-29 01:17:12,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 345 flow [2023-08-29 01:17:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 314 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-29 01:17:12,442 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 197 flow [2023-08-29 01:17:12,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-29 01:17:12,443 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -27 predicate places. [2023-08-29 01:17:12,443 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 197 flow [2023-08-29 01:17:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 01:17:12,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:12,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 01:17:12,444 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr14ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:12,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1162117943, now seen corresponding path program 1 times [2023-08-29 01:17:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:12,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788181236] [2023-08-29 01:17:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:12,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:17:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788181236] [2023-08-29 01:17:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788181236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:13,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:13,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:17:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733659519] [2023-08-29 01:17:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:17:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:17:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:17:13,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 617 [2023-08-29 01:17:13,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 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 01:17:13,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:13,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 617 [2023-08-29 01:17:13,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:13,806 INFO L130 PetriNetUnfolder]: 170/407 cut-off events. [2023-08-29 01:17:13,806 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 01:17:13,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 407 events. 170/407 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 957 event pairs, 132 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 957. Up to 367 conditions per place. [2023-08-29 01:17:13,808 INFO L137 encePairwiseOnDemand]: 611/617 looper letters, 67 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2023-08-29 01:17:13,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 359 flow [2023-08-29 01:17:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:17:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:17:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2023-08-29 01:17:13,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39384116693679094 [2023-08-29 01:17:13,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2023-08-29 01:17:13,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2023-08-29 01:17:13,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:13,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2023-08-29 01:17:13,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 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 01:17:13,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:13,824 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:13,824 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 197 flow. Second operand 6 states and 1458 transitions. [2023-08-29 01:17:13,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 359 flow [2023-08-29 01:17:13,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 01:17:13,829 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 199 flow [2023-08-29 01:17:13,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-29 01:17:13,833 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -25 predicate places. [2023-08-29 01:17:13,834 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 199 flow [2023-08-29 01:17:13,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 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 01:17:13,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:13,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:13,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 01:17:13,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr15ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:13,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 467372133, now seen corresponding path program 1 times [2023-08-29 01:17:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:13,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542693535] [2023-08-29 01:17:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:17:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542693535] [2023-08-29 01:17:14,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542693535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:14,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:14,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:17:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451181589] [2023-08-29 01:17:14,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:14,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:17:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:17:14,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:17:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 617 [2023-08-29 01:17:15,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 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 01:17:15,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:15,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 617 [2023-08-29 01:17:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:15,670 INFO L130 PetriNetUnfolder]: 114/348 cut-off events. [2023-08-29 01:17:15,670 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 01:17:15,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 348 events. 114/348 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 885 event pairs, 68 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 736. Up to 207 conditions per place. [2023-08-29 01:17:15,672 INFO L137 encePairwiseOnDemand]: 611/617 looper letters, 52 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2023-08-29 01:17:15,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 333 flow [2023-08-29 01:17:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:17:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:17:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1576 transitions. [2023-08-29 01:17:15,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42571582928146945 [2023-08-29 01:17:15,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1576 transitions. [2023-08-29 01:17:15,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1576 transitions. [2023-08-29 01:17:15,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:15,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1576 transitions. [2023-08-29 01:17:15,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 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 01:17:15,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:15,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:15,689 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 199 flow. Second operand 6 states and 1576 transitions. [2023-08-29 01:17:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 333 flow [2023-08-29 01:17:15,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 323 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 01:17:15,691 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 197 flow [2023-08-29 01:17:15,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-29 01:17:15,692 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2023-08-29 01:17:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 197 flow [2023-08-29 01:17:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 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 01:17:15,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:17:15,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:15,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 01:17:15,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr17ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr1ASSERT_VIOLATIONDATA_RACE (and 55 more)] === [2023-08-29 01:17:15,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:17:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1909794118, now seen corresponding path program 1 times [2023-08-29 01:17:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:17:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507214830] [2023-08-29 01:17:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:17:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:17:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:17:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:17:16,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:17:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507214830] [2023-08-29 01:17:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507214830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:17:16,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:17:16,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:17:16,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392198985] [2023-08-29 01:17:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:17:16,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:17:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:17:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:17:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:17:16,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 617 [2023-08-29 01:17:16,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 260.1666666666667) internal successors, (1561), 6 states have internal predecessors, (1561), 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 01:17:16,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:17:16,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 617 [2023-08-29 01:17:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:17:17,119 INFO L130 PetriNetUnfolder]: 120/348 cut-off events. [2023-08-29 01:17:17,119 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 01:17:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 348 events. 120/348 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 865 event pairs, 72 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 754. Up to 217 conditions per place. [2023-08-29 01:17:17,120 INFO L137 encePairwiseOnDemand]: 611/617 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-08-29 01:17:17,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 325 flow [2023-08-29 01:17:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:17:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:17:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1579 transitions. [2023-08-29 01:17:17,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42652620205294434 [2023-08-29 01:17:17,125 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1579 transitions. [2023-08-29 01:17:17,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1579 transitions. [2023-08-29 01:17:17,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:17:17,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1579 transitions. [2023-08-29 01:17:17,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 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 01:17:17,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:17,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 617.0) internal successors, (4319), 7 states have internal predecessors, (4319), 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 01:17:17,144 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 197 flow. Second operand 6 states and 1579 transitions. [2023-08-29 01:17:17,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 325 flow [2023-08-29 01:17:17,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 01:17:17,146 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-08-29 01:17:17,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2023-08-29 01:17:17,147 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2023-08-29 01:17:17,147 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-08-29 01:17:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.1666666666667) internal successors, (1561), 6 states have internal predecessors, (1561), 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 01:17:17,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr6ASSERT_VIOLATIONDATA_RACE (58 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr21ASSERT_VIOLATIONDATA_RACE (57 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr21ASSERT_VIOLATIONDATA_RACE (56 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr1ASSERT_VIOLATIONDATA_RACE (55 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr22ASSERT_VIOLATIONDATA_RACE (54 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr24ASSERT_VIOLATIONDATA_RACE (53 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr10ASSERT_VIOLATIONDATA_RACE (52 of 59 remaining) [2023-08-29 01:17:17,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr26ASSERT_VIOLATIONDATA_RACE (51 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (50 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr16ASSERT_VIOLATIONDATA_RACE (49 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr25ASSERT_VIOLATIONDATA_RACE (48 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr4ASSERT_VIOLATIONDATA_RACE (47 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr5ASSERT_VIOLATIONDATA_RACE (46 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr18ASSERT_VIOLATIONDATA_RACE (45 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr11ASSERT_VIOLATIONDATA_RACE (44 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr16ASSERT_VIOLATIONDATA_RACE (43 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr6ASSERT_VIOLATIONDATA_RACE (42 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr2ASSERT_VIOLATIONDATA_RACE (41 of 59 remaining) [2023-08-29 01:17:17,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr7ASSERT_VIOLATIONDATA_RACE (40 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr8ASSERT_VIOLATIONDATA_RACE (39 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr20ASSERT_VIOLATIONDATA_RACE (38 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr22ASSERT_VIOLATIONDATA_RACE (37 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr8ASSERT_VIOLATIONDATA_RACE (36 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 59 remaining) [2023-08-29 01:17:17,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr15ASSERT_VIOLATIONDATA_RACE (34 of 59 remaining) [2023-08-29 01:17:17,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr4ASSERT_VIOLATIONDATA_RACE (33 of 59 remaining) [2023-08-29 01:17:17,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (32 of 59 remaining) [2023-08-29 01:17:17,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr7ASSERT_VIOLATIONDATA_RACE (31 of 59 remaining) [2023-08-29 01:17:17,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr20ASSERT_VIOLATIONDATA_RACE (30 of 59 remaining) [2023-08-29 01:17:17,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr10ASSERT_VIOLATIONDATA_RACE (29 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr15ASSERT_VIOLATIONDATA_RACE (28 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr17ASSERT_VIOLATIONDATA_RACE (27 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr24ASSERT_VIOLATIONDATA_RACE (26 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr19ASSERT_VIOLATIONDATA_RACE (25 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr14ASSERT_VIOLATIONDATA_RACE (24 of 59 remaining) [2023-08-29 01:17:17,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr17ASSERT_VIOLATIONDATA_RACE (23 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr23ASSERT_VIOLATIONDATA_RACE (22 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr3ASSERT_VIOLATIONDATA_RACE (20 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr11ASSERT_VIOLATIONDATA_RACE (19 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr23ASSERT_VIOLATIONDATA_RACE (18 of 59 remaining) [2023-08-29 01:17:17,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr26ASSERT_VIOLATIONDATA_RACE (17 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr13ASSERT_VIOLATIONDATA_RACE (16 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr9ASSERT_VIOLATIONDATA_RACE (15 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr12ASSERT_VIOLATIONDATA_RACE (14 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr14ASSERT_VIOLATIONDATA_RACE (12 of 59 remaining) [2023-08-29 01:17:17,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr9ASSERT_VIOLATIONDATA_RACE (11 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr3ASSERT_VIOLATIONDATA_RACE (10 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr12ASSERT_VIOLATIONDATA_RACE (9 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (8 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (7 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr19ASSERT_VIOLATIONDATA_RACE (6 of 59 remaining) [2023-08-29 01:17:17,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr2ASSERT_VIOLATIONDATA_RACE (5 of 59 remaining) [2023-08-29 01:17:17,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr5ASSERT_VIOLATIONDATA_RACE (4 of 59 remaining) [2023-08-29 01:17:17,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr25ASSERT_VIOLATIONDATA_RACE (3 of 59 remaining) [2023-08-29 01:17:17,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr13ASSERT_VIOLATIONDATA_RACE (2 of 59 remaining) [2023-08-29 01:17:17,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr18ASSERT_VIOLATIONDATA_RACE (1 of 59 remaining) [2023-08-29 01:17:17,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr1ASSERT_VIOLATIONDATA_RACE (0 of 59 remaining) [2023-08-29 01:17:17,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 01:17:17,160 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:17:17,162 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 01:17:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 316 transitions, 640 flow [2023-08-29 01:17:17,207 INFO L130 PetriNetUnfolder]: 19/336 cut-off events. [2023-08-29 01:17:17,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 01:17:17,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 336 events. 19/336 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 656 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 246. Up to 4 conditions per place. [2023-08-29 01:17:17,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 316 transitions, 640 flow [2023-08-29 01:17:17,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 307 transitions, 619 flow [2023-08-29 01:17:17,211 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 01:17:17,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 307 transitions, 619 flow [2023-08-29 01:17:17,212 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 307 transitions, 619 flow [2023-08-29 01:17:17,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 307 transitions, 619 flow [2023-08-29 01:17:17,248 INFO L130 PetriNetUnfolder]: 18/327 cut-off events. [2023-08-29 01:17:17,248 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:17:17,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 327 events. 18/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 604 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 246. Up to 4 conditions per place. [2023-08-29 01:17:17,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 11492 [2023-08-29 01:18:04,297 INFO L134 LiptonReduction]: Checked pairs total: 29864 [2023-08-29 01:18:04,298 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-29 01:18:04,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 01:18:04,300 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5cc74401, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 01:18:04,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 01:18:04,303 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-08-29 01:18:04,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:18:04,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:18:04,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 01:18:04,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 01:18:04,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:18:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1069847594, now seen corresponding path program 1 times [2023-08-29 01:18:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:18:04,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069338882] [2023-08-29 01:18:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:18:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:18:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:18:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 01:18:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:18:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069338882] [2023-08-29 01:18:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069338882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:18:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:18:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 01:18:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958397060] [2023-08-29 01:18:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:18:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:18:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:18:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:18:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:18:04,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 606 [2023-08-29 01:18:04,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 100 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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 01:18:04,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:18:04,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 606 [2023-08-29 01:18:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:18:04,612 INFO L130 PetriNetUnfolder]: 91/325 cut-off events. [2023-08-29 01:18:04,612 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:18:04,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 325 events. 91/325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1087 event pairs, 66 based on Foata normal form. 8/278 useless extension candidates. Maximal degree in co-relation 492. Up to 188 conditions per place. [2023-08-29 01:18:04,614 INFO L137 encePairwiseOnDemand]: 577/606 looper letters, 33 selfloop transitions, 2 changer transitions 7/74 dead transitions. [2023-08-29 01:18:04,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 225 flow [2023-08-29 01:18:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:18:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:18:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 852 transitions. [2023-08-29 01:18:04,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46864686468646866 [2023-08-29 01:18:04,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 852 transitions. [2023-08-29 01:18:04,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 852 transitions. [2023-08-29 01:18:04,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:18:04,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 852 transitions. [2023-08-29 01:18:04,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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 01:18:04,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 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 01:18:04,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 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 01:18:04,623 INFO L175 Difference]: Start difference. First operand has 92 places, 100 transitions, 205 flow. Second operand 3 states and 852 transitions. [2023-08-29 01:18:04,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 225 flow [2023-08-29 01:18:04,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:18:04,625 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 149 flow [2023-08-29 01:18:04,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-29 01:18:04,626 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -20 predicate places. [2023-08-29 01:18:04,626 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 149 flow [2023-08-29 01:18:04,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 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 01:18:04,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:18:04,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 01:18:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 01:18:04,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 01:18:04,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:18:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1221991268, now seen corresponding path program 1 times [2023-08-29 01:18:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:18:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426256209] [2023-08-29 01:18:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:18:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:18:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:18:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 01:18:04,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:18:04,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426256209] [2023-08-29 01:18:04,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426256209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:18:04,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182881375] [2023-08-29 01:18:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:18:04,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:18:04,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:18:04,717 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 01:18:04,750 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 01:18:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:18:04,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 01:18:04,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:18:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 01:18:04,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 01:18:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 01:18:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182881375] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 01:18:04,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 01:18:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-29 01:18:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537692198] [2023-08-29 01:18:04,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 01:18:04,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 01:18:04,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:18:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 01:18:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-08-29 01:18:04,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 606 [2023-08-29 01:18:04,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 262.5) internal successors, (2100), 8 states have internal predecessors, (2100), 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 01:18:04,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:18:04,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 606 [2023-08-29 01:18:04,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:18:05,394 INFO L130 PetriNetUnfolder]: 63/231 cut-off events. [2023-08-29 01:18:05,395 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:18:05,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 231 events. 63/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 608 event pairs, 44 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 370. Up to 136 conditions per place. [2023-08-29 01:18:05,396 INFO L137 encePairwiseOnDemand]: 603/606 looper letters, 33 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-29 01:18:05,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 225 flow [2023-08-29 01:18:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 01:18:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 01:18:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1081 transitions. [2023-08-29 01:18:05,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445957095709571 [2023-08-29 01:18:05,399 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1081 transitions. [2023-08-29 01:18:05,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1081 transitions. [2023-08-29 01:18:05,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:18:05,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1081 transitions. [2023-08-29 01:18:05,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 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 01:18:05,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 606.0) internal successors, (3030), 5 states have internal predecessors, (3030), 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 01:18:05,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 606.0) internal successors, (3030), 5 states have internal predecessors, (3030), 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 01:18:05,405 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 149 flow. Second operand 4 states and 1081 transitions. [2023-08-29 01:18:05,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 225 flow [2023-08-29 01:18:05,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 221 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 01:18:05,407 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 161 flow [2023-08-29 01:18:05,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=606, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-29 01:18:05,408 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -24 predicate places. [2023-08-29 01:18:05,408 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 161 flow [2023-08-29 01:18:05,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 262.5) internal successors, (2100), 8 states have internal predecessors, (2100), 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 01:18:05,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:18:05,408 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-29 01:18:05,425 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 01:18:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:18:05,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 01:18:05,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:18:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -745448042, now seen corresponding path program 2 times [2023-08-29 01:18:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:18:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643454470] [2023-08-29 01:18:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:18:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:18:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 01:18:05,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 01:18:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 01:18:05,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 01:18:05,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 01:18:05,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 01:18:05,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 01:18:05,700 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-08-29 01:18:05,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 01:18:05,701 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 01:18:05,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 01:18:05,800 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 01:18:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:05,928 INFO L130 PetriNetUnfolder]: 36/607 cut-off events. [2023-08-29 01:18:05,929 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 01:18:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 607 events. 36/607 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2208 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 486. Up to 8 conditions per place. [2023-08-29 01:18:05,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:05,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:05,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 01:18:05,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:05,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:05,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 539 transitions, 1096 flow [2023-08-29 01:18:06,044 INFO L130 PetriNetUnfolder]: 36/607 cut-off events. [2023-08-29 01:18:06,044 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 01:18:06,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 607 events. 36/607 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2208 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 486. Up to 8 conditions per place. [2023-08-29 01:18:06,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 125528 [2023-08-29 01:19:39,701 INFO L134 LiptonReduction]: Checked pairs total: 362491 [2023-08-29 01:19:39,701 INFO L136 LiptonReduction]: Total number of compositions: 474 [2023-08-29 01:19:39,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 01:19:39,703 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5cc74401, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 01:19:39,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-08-29 01:19:39,704 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 01:19:39,704 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:19:39,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:39,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 01:19:39,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:39,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 3233, now seen corresponding path program 1 times [2023-08-29 01:19:39,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:39,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084258106] [2023-08-29 01:19:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:39,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:39,717 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 01:19:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084258106] [2023-08-29 01:19:39,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084258106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:19:39,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:19:39,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 01:19:39,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710972933] [2023-08-29 01:19:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:19:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 01:19:39,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:19:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 01:19:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 01:19:39,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1013 [2023-08-29 01:19:39,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 206 transitions, 430 flow. Second operand has 2 states, 2 states have (on average 454.5) internal successors, (909), 2 states have internal predecessors, (909), 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 01:19:39,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:19:39,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1013 [2023-08-29 01:19:39,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:19:42,809 INFO L130 PetriNetUnfolder]: 11755/23201 cut-off events. [2023-08-29 01:19:42,810 INFO L131 PetriNetUnfolder]: For 306/356 co-relation queries the response was YES. [2023-08-29 01:19:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40676 conditions, 23201 events. 11755/23201 cut-off events. For 306/356 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 193935 event pairs, 9532 based on Foata normal form. 546/19210 useless extension candidates. Maximal degree in co-relation 33909. Up to 17309 conditions per place. [2023-08-29 01:19:42,931 INFO L137 encePairwiseOnDemand]: 960/1013 looper letters, 82 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2023-08-29 01:19:42,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 153 transitions, 488 flow [2023-08-29 01:19:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 01:19:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 01:19:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1043 transitions. [2023-08-29 01:19:42,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148075024679171 [2023-08-29 01:19:42,935 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1043 transitions. [2023-08-29 01:19:42,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1043 transitions. [2023-08-29 01:19:42,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:19:42,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1043 transitions. [2023-08-29 01:19:42,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 521.5) internal successors, (1043), 2 states have internal predecessors, (1043), 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 01:19:42,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1013.0) internal successors, (3039), 3 states have internal predecessors, (3039), 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 01:19:42,941 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1013.0) internal successors, (3039), 3 states have internal predecessors, (3039), 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 01:19:42,941 INFO L175 Difference]: Start difference. First operand has 189 places, 206 transitions, 430 flow. Second operand 2 states and 1043 transitions. [2023-08-29 01:19:42,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 153 transitions, 488 flow [2023-08-29 01:19:42,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 153 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:19:42,944 INFO L231 Difference]: Finished difference. Result has 144 places, 153 transitions, 324 flow [2023-08-29 01:19:42,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=324, PETRI_PLACES=144, PETRI_TRANSITIONS=153} [2023-08-29 01:19:42,946 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -45 predicate places. [2023-08-29 01:19:42,946 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 153 transitions, 324 flow [2023-08-29 01:19:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 454.5) internal successors, (909), 2 states have internal predecessors, (909), 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 01:19:42,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:42,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:19:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 01:19:42,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:42,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash -676900785, now seen corresponding path program 1 times [2023-08-29 01:19:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:42,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817939502] [2023-08-29 01:19:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:43,008 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 01:19:43,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:43,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817939502] [2023-08-29 01:19:43,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817939502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:19:43,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:19:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 01:19:43,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292023096] [2023-08-29 01:19:43,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:19:43,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:19:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:19:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:19:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:19:43,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 449 out of 1013 [2023-08-29 01:19:43,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 153 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 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 01:19:43,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:19:43,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 449 of 1013 [2023-08-29 01:19:43,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:19:45,334 INFO L130 PetriNetUnfolder]: 11755/23202 cut-off events. [2023-08-29 01:19:45,334 INFO L131 PetriNetUnfolder]: For 306/356 co-relation queries the response was YES. [2023-08-29 01:19:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40679 conditions, 23202 events. 11755/23202 cut-off events. For 306/356 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 194029 event pairs, 9532 based on Foata normal form. 0/18665 useless extension candidates. Maximal degree in co-relation 40674. Up to 17309 conditions per place. [2023-08-29 01:19:45,430 INFO L137 encePairwiseOnDemand]: 1010/1013 looper letters, 81 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-29 01:19:45,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 154 transitions, 492 flow [2023-08-29 01:19:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:19:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:19:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1431 transitions. [2023-08-29 01:19:45,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47087857847976305 [2023-08-29 01:19:45,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1431 transitions. [2023-08-29 01:19:45,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1431 transitions. [2023-08-29 01:19:45,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:19:45,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1431 transitions. [2023-08-29 01:19:45,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 477.0) internal successors, (1431), 3 states have internal predecessors, (1431), 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 01:19:45,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:19:45,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:19:45,442 INFO L175 Difference]: Start difference. First operand has 144 places, 153 transitions, 324 flow. Second operand 3 states and 1431 transitions. [2023-08-29 01:19:45,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 154 transitions, 492 flow [2023-08-29 01:19:45,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 154 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:19:45,445 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 336 flow [2023-08-29 01:19:45,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2023-08-29 01:19:45,445 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -42 predicate places. [2023-08-29 01:19:45,445 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 336 flow [2023-08-29 01:19:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.3333333333333) internal successors, (1351), 3 states have internal predecessors, (1351), 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 01:19:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:45,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:19:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 01:19:45,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:45,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash 831804164, now seen corresponding path program 1 times [2023-08-29 01:19:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188470754] [2023-08-29 01:19:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:19:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188470754] [2023-08-29 01:19:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188470754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:19:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:19:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:19:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495955332] [2023-08-29 01:19:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:19:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:19:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:19:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:19:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:19:45,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 446 out of 1013 [2023-08-29 01:19:45,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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 01:19:45,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:19:45,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 446 of 1013 [2023-08-29 01:19:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:19:47,940 INFO L130 PetriNetUnfolder]: 9760/20908 cut-off events. [2023-08-29 01:19:47,940 INFO L131 PetriNetUnfolder]: For 268/268 co-relation queries the response was YES. [2023-08-29 01:19:47,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35595 conditions, 20908 events. 9760/20908 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 186321 event pairs, 4869 based on Foata normal form. 0/17316 useless extension candidates. Maximal degree in co-relation 35588. Up to 8399 conditions per place. [2023-08-29 01:19:48,033 INFO L137 encePairwiseOnDemand]: 1008/1013 looper letters, 154 selfloop transitions, 4 changer transitions 0/229 dead transitions. [2023-08-29 01:19:48,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 229 transitions, 808 flow [2023-08-29 01:19:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:19:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:19:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1497 transitions. [2023-08-29 01:19:48,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49259624876604147 [2023-08-29 01:19:48,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1497 transitions. [2023-08-29 01:19:48,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1497 transitions. [2023-08-29 01:19:48,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:19:48,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1497 transitions. [2023-08-29 01:19:48,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 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 01:19:48,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:19:48,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:19:48,045 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 336 flow. Second operand 3 states and 1497 transitions. [2023-08-29 01:19:48,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 229 transitions, 808 flow [2023-08-29 01:19:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 229 transitions, 804 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 01:19:48,049 INFO L231 Difference]: Finished difference. Result has 149 places, 156 transitions, 354 flow [2023-08-29 01:19:48,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=149, PETRI_TRANSITIONS=156} [2023-08-29 01:19:48,050 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -40 predicate places. [2023-08-29 01:19:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 156 transitions, 354 flow [2023-08-29 01:19:48,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 447.6666666666667) internal successors, (1343), 3 states have internal predecessors, (1343), 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 01:19:48,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:48,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:19:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 01:19:48,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:48,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash -431975855, now seen corresponding path program 1 times [2023-08-29 01:19:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:48,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37697360] [2023-08-29 01:19:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:48,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:19:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37697360] [2023-08-29 01:19:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37697360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:19:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:19:48,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:19:48,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30351189] [2023-08-29 01:19:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:19:48,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:19:48,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:19:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:19:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:19:48,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1013 [2023-08-29 01:19:48,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 156 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 424.3333333333333) internal successors, (2546), 6 states have internal predecessors, (2546), 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 01:19:48,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:19:48,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1013 [2023-08-29 01:19:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:19:54,402 INFO L130 PetriNetUnfolder]: 23142/41328 cut-off events. [2023-08-29 01:19:54,402 INFO L131 PetriNetUnfolder]: For 9475/9526 co-relation queries the response was YES. [2023-08-29 01:19:54,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80984 conditions, 41328 events. 23142/41328 cut-off events. For 9475/9526 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 333904 event pairs, 11174 based on Foata normal form. 1/36696 useless extension candidates. Maximal degree in co-relation 80976. Up to 25705 conditions per place. [2023-08-29 01:19:54,618 INFO L137 encePairwiseOnDemand]: 975/1013 looper letters, 236 selfloop transitions, 77 changer transitions 0/363 dead transitions. [2023-08-29 01:19:54,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 363 transitions, 1478 flow [2023-08-29 01:19:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:19:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:19:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2841 transitions. [2023-08-29 01:19:54,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674234945705824 [2023-08-29 01:19:54,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2841 transitions. [2023-08-29 01:19:54,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2841 transitions. [2023-08-29 01:19:54,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:19:54,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2841 transitions. [2023-08-29 01:19:54,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 473.5) internal successors, (2841), 6 states have internal predecessors, (2841), 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 01:19:54,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:19:54,639 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:19:54,639 INFO L175 Difference]: Start difference. First operand has 149 places, 156 transitions, 354 flow. Second operand 6 states and 2841 transitions. [2023-08-29 01:19:54,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 363 transitions, 1478 flow [2023-08-29 01:19:54,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 363 transitions, 1462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 01:19:54,653 INFO L231 Difference]: Finished difference. Result has 158 places, 230 transitions, 876 flow [2023-08-29 01:19:54,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=876, PETRI_PLACES=158, PETRI_TRANSITIONS=230} [2023-08-29 01:19:54,655 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -31 predicate places. [2023-08-29 01:19:54,655 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 230 transitions, 876 flow [2023-08-29 01:19:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 424.3333333333333) internal successors, (2546), 6 states have internal predecessors, (2546), 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 01:19:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:54,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:19:54,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 01:19:54,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:54,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:54,657 INFO L85 PathProgramCache]: Analyzing trace with hash 933510769, now seen corresponding path program 1 times [2023-08-29 01:19:54,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:54,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303035810] [2023-08-29 01:19:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:19:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303035810] [2023-08-29 01:19:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303035810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:19:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367569450] [2023-08-29 01:19:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:54,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:19:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:19:54,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 01:19:54,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 01:19:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:54,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 01:19:54,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:19:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:19:54,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 01:19:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:19:54,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367569450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 01:19:54,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 01:19:54,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-29 01:19:54,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205258344] [2023-08-29 01:19:54,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 01:19:54,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 01:19:54,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:19:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 01:19:54,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 01:19:55,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 1013 [2023-08-29 01:19:55,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 230 transitions, 876 flow. Second operand has 8 states, 8 states have (on average 441.25) internal successors, (3530), 8 states have internal predecessors, (3530), 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 01:19:55,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:19:55,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 1013 [2023-08-29 01:19:55,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:19:59,437 INFO L130 PetriNetUnfolder]: 16113/32762 cut-off events. [2023-08-29 01:19:59,437 INFO L131 PetriNetUnfolder]: For 11055/11727 co-relation queries the response was YES. [2023-08-29 01:19:59,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74384 conditions, 32762 events. 16113/32762 cut-off events. For 11055/11727 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 300943 event pairs, 2441 based on Foata normal form. 251/28655 useless extension candidates. Maximal degree in co-relation 74372. Up to 9886 conditions per place. [2023-08-29 01:19:59,605 INFO L137 encePairwiseOnDemand]: 1006/1013 looper letters, 379 selfloop transitions, 9 changer transitions 1/481 dead transitions. [2023-08-29 01:19:59,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 481 transitions, 2668 flow [2023-08-29 01:19:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:19:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:19:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2867 transitions. [2023-08-29 01:19:59,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717012175057585 [2023-08-29 01:19:59,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2867 transitions. [2023-08-29 01:19:59,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2867 transitions. [2023-08-29 01:19:59,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:19:59,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2867 transitions. [2023-08-29 01:19:59,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 477.8333333333333) internal successors, (2867), 6 states have internal predecessors, (2867), 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 01:19:59,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:19:59,624 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:19:59,624 INFO L175 Difference]: Start difference. First operand has 158 places, 230 transitions, 876 flow. Second operand 6 states and 2867 transitions. [2023-08-29 01:19:59,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 481 transitions, 2668 flow [2023-08-29 01:19:59,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 481 transitions, 2668 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:19:59,662 INFO L231 Difference]: Finished difference. Result has 164 places, 230 transitions, 898 flow [2023-08-29 01:19:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=898, PETRI_PLACES=164, PETRI_TRANSITIONS=230} [2023-08-29 01:19:59,663 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -25 predicate places. [2023-08-29 01:19:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 230 transitions, 898 flow [2023-08-29 01:19:59,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 441.25) internal successors, (3530), 8 states have internal predecessors, (3530), 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 01:19:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:19:59,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:19:59,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 01:19:59,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-29 01:19:59,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:19:59,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:19:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1402099048, now seen corresponding path program 1 times [2023-08-29 01:19:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:19:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039080556] [2023-08-29 01:19:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:19:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:19:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:19:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:19:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039080556] [2023-08-29 01:19:59,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039080556] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:19:59,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935923982] [2023-08-29 01:19:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:19:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:19:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:19:59,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 01:19:59,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 01:20:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 01:20:00,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:20:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:20:00,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 01:20:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:20:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935923982] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 01:20:00,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 01:20:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-08-29 01:20:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985591981] [2023-08-29 01:20:00,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 01:20:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:20:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:20:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:20:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:20:00,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 1013 [2023-08-29 01:20:00,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 230 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 446.5) internal successors, (2679), 6 states have internal predecessors, (2679), 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 01:20:00,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:20:00,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 1013 [2023-08-29 01:20:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:20:02,467 INFO L130 PetriNetUnfolder]: 8885/16999 cut-off events. [2023-08-29 01:20:02,468 INFO L131 PetriNetUnfolder]: For 10964/11497 co-relation queries the response was YES. [2023-08-29 01:20:02,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42498 conditions, 16999 events. 8885/16999 cut-off events. For 10964/11497 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 135065 event pairs, 200 based on Foata normal form. 1698/16469 useless extension candidates. Maximal degree in co-relation 42484. Up to 9698 conditions per place. [2023-08-29 01:20:02,535 INFO L137 encePairwiseOnDemand]: 1010/1013 looper letters, 291 selfloop transitions, 3 changer transitions 0/379 dead transitions. [2023-08-29 01:20:02,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 379 transitions, 2054 flow [2023-08-29 01:20:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 01:20:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 01:20:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2404 transitions. [2023-08-29 01:20:02,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462981243830205 [2023-08-29 01:20:02,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2404 transitions. [2023-08-29 01:20:02,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2404 transitions. [2023-08-29 01:20:02,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:20:02,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2404 transitions. [2023-08-29 01:20:02,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 480.8) internal successors, (2404), 5 states have internal predecessors, (2404), 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 01:20:02,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1013.0) internal successors, (6078), 6 states have internal predecessors, (6078), 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 01:20:02,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1013.0) internal successors, (6078), 6 states have internal predecessors, (6078), 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 01:20:02,550 INFO L175 Difference]: Start difference. First operand has 164 places, 230 transitions, 898 flow. Second operand 5 states and 2404 transitions. [2023-08-29 01:20:02,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 379 transitions, 2054 flow [2023-08-29 01:20:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 379 transitions, 2040 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-29 01:20:02,565 INFO L231 Difference]: Finished difference. Result has 154 places, 217 transitions, 846 flow [2023-08-29 01:20:02,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=154, PETRI_TRANSITIONS=217} [2023-08-29 01:20:02,565 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -35 predicate places. [2023-08-29 01:20:02,566 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 217 transitions, 846 flow [2023-08-29 01:20:02,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 446.5) internal successors, (2679), 6 states have internal predecessors, (2679), 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 01:20:02,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:20:02,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:20:02,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 01:20:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 01:20:02,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:20:02,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:20:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1815414557, now seen corresponding path program 1 times [2023-08-29 01:20:02,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:20:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101993011] [2023-08-29 01:20:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:20:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-29 01:20:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:20:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101993011] [2023-08-29 01:20:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101993011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:20:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:20:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:20:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162009390] [2023-08-29 01:20:03,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:20:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:20:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:20:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:20:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:20:03,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1013 [2023-08-29 01:20:03,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 217 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 424.6666666666667) internal successors, (2548), 6 states have internal predecessors, (2548), 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 01:20:03,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:20:03,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1013 [2023-08-29 01:20:03,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:20:08,248 INFO L130 PetriNetUnfolder]: 18845/34131 cut-off events. [2023-08-29 01:20:08,248 INFO L131 PetriNetUnfolder]: For 16310/16982 co-relation queries the response was YES. [2023-08-29 01:20:08,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81450 conditions, 34131 events. 18845/34131 cut-off events. For 16310/16982 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 275876 event pairs, 7378 based on Foata normal form. 258/30629 useless extension candidates. Maximal degree in co-relation 81436. Up to 20441 conditions per place. [2023-08-29 01:20:08,439 INFO L137 encePairwiseOnDemand]: 974/1013 looper letters, 291 selfloop transitions, 110 changer transitions 0/453 dead transitions. [2023-08-29 01:20:08,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 453 transitions, 2424 flow [2023-08-29 01:20:08,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:20:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:20:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2816 transitions. [2023-08-29 01:20:08,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633102994406055 [2023-08-29 01:20:08,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2816 transitions. [2023-08-29 01:20:08,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2816 transitions. [2023-08-29 01:20:08,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:20:08,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2816 transitions. [2023-08-29 01:20:08,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 469.3333333333333) internal successors, (2816), 6 states have internal predecessors, (2816), 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 01:20:08,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:20:08,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:20:08,457 INFO L175 Difference]: Start difference. First operand has 154 places, 217 transitions, 846 flow. Second operand 6 states and 2816 transitions. [2023-08-29 01:20:08,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 453 transitions, 2424 flow [2023-08-29 01:20:08,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 453 transitions, 2415 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 01:20:08,481 INFO L231 Difference]: Finished difference. Result has 161 places, 324 transitions, 1775 flow [2023-08-29 01:20:08,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1775, PETRI_PLACES=161, PETRI_TRANSITIONS=324} [2023-08-29 01:20:08,482 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -28 predicate places. [2023-08-29 01:20:08,482 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 324 transitions, 1775 flow [2023-08-29 01:20:08,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 424.6666666666667) internal successors, (2548), 6 states have internal predecessors, (2548), 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 01:20:08,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:20:08,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:20:08,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 01:20:08,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr14ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:20:08,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:20:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash -198143460, now seen corresponding path program 1 times [2023-08-29 01:20:08,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:20:08,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422102409] [2023-08-29 01:20:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:20:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:20:08,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:20:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422102409] [2023-08-29 01:20:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422102409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:20:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:20:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:20:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353811158] [2023-08-29 01:20:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:20:08,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:20:08,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:20:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:20:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:20:08,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1013 [2023-08-29 01:20:08,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 324 transitions, 1775 flow. Second operand has 3 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 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 01:20:08,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:20:08,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1013 [2023-08-29 01:20:08,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:20:13,122 INFO L130 PetriNetUnfolder]: 19867/40223 cut-off events. [2023-08-29 01:20:13,122 INFO L131 PetriNetUnfolder]: For 21823/22936 co-relation queries the response was YES. [2023-08-29 01:20:13,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110292 conditions, 40223 events. 19867/40223 cut-off events. For 21823/22936 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 361700 event pairs, 7092 based on Foata normal form. 237/36253 useless extension candidates. Maximal degree in co-relation 110274. Up to 17575 conditions per place. [2023-08-29 01:20:13,379 INFO L137 encePairwiseOnDemand]: 1009/1013 looper letters, 371 selfloop transitions, 4 changer transitions 0/481 dead transitions. [2023-08-29 01:20:13,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 481 transitions, 3461 flow [2023-08-29 01:20:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:20:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:20:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1481 transitions. [2023-08-29 01:20:13,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48733135899967095 [2023-08-29 01:20:13,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1481 transitions. [2023-08-29 01:20:13,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1481 transitions. [2023-08-29 01:20:13,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:20:13,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1481 transitions. [2023-08-29 01:20:13,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 493.6666666666667) internal successors, (1481), 3 states have internal predecessors, (1481), 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 01:20:13,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:20:13,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:20:13,389 INFO L175 Difference]: Start difference. First operand has 161 places, 324 transitions, 1775 flow. Second operand 3 states and 1481 transitions. [2023-08-29 01:20:13,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 481 transitions, 3461 flow [2023-08-29 01:20:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 481 transitions, 3451 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-29 01:20:13,451 INFO L231 Difference]: Finished difference. Result has 165 places, 323 transitions, 1757 flow [2023-08-29 01:20:13,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1757, PETRI_PLACES=165, PETRI_TRANSITIONS=323} [2023-08-29 01:20:13,452 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -24 predicate places. [2023-08-29 01:20:13,452 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 323 transitions, 1757 flow [2023-08-29 01:20:13,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 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 01:20:13,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:20:13,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:20:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 01:20:13,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr14ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:20:13,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:20:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1838886105, now seen corresponding path program 1 times [2023-08-29 01:20:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:20:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874801486] [2023-08-29 01:20:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:20:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-29 01:20:13,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:20:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874801486] [2023-08-29 01:20:13,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874801486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:20:13,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:20:13,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:20:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924500131] [2023-08-29 01:20:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:20:13,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:20:13,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:20:13,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:20:13,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:20:13,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 450 out of 1013 [2023-08-29 01:20:13,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 323 transitions, 1757 flow. Second operand has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 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 01:20:13,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:20:13,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 450 of 1013 [2023-08-29 01:20:13,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:20:20,462 INFO L130 PetriNetUnfolder]: 28229/56658 cut-off events. [2023-08-29 01:20:20,462 INFO L131 PetriNetUnfolder]: For 32088/33672 co-relation queries the response was YES. [2023-08-29 01:20:20,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160364 conditions, 56658 events. 28229/56658 cut-off events. For 32088/33672 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 527354 event pairs, 9626 based on Foata normal form. 369/51179 useless extension candidates. Maximal degree in co-relation 160344. Up to 24895 conditions per place. [2023-08-29 01:20:20,811 INFO L137 encePairwiseOnDemand]: 1009/1013 looper letters, 368 selfloop transitions, 4 changer transitions 0/478 dead transitions. [2023-08-29 01:20:20,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 478 transitions, 3410 flow [2023-08-29 01:20:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:20:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:20:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1481 transitions. [2023-08-29 01:20:20,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48733135899967095 [2023-08-29 01:20:20,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1481 transitions. [2023-08-29 01:20:20,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1481 transitions. [2023-08-29 01:20:20,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:20:20,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1481 transitions. [2023-08-29 01:20:20,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 493.6666666666667) internal successors, (1481), 3 states have internal predecessors, (1481), 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 01:20:20,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:20:20,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1013.0) internal successors, (4052), 4 states have internal predecessors, (4052), 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 01:20:20,819 INFO L175 Difference]: Start difference. First operand has 165 places, 323 transitions, 1757 flow. Second operand 3 states and 1481 transitions. [2023-08-29 01:20:20,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 478 transitions, 3410 flow [2023-08-29 01:20:20,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 478 transitions, 3384 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 01:20:20,946 INFO L231 Difference]: Finished difference. Result has 167 places, 322 transitions, 1731 flow [2023-08-29 01:20:20,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1731, PETRI_PLACES=167, PETRI_TRANSITIONS=322} [2023-08-29 01:20:20,947 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -22 predicate places. [2023-08-29 01:20:20,947 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 322 transitions, 1731 flow [2023-08-29 01:20:20,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 454.6666666666667) internal successors, (1364), 3 states have internal predecessors, (1364), 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 01:20:20,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:20:20,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:20:20,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 01:20:20,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr14ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:20:20,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:20:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash -256574749, now seen corresponding path program 1 times [2023-08-29 01:20:20,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:20:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054273308] [2023-08-29 01:20:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:20:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 01:20:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:20:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054273308] [2023-08-29 01:20:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054273308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:20:21,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:20:21,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:20:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390265907] [2023-08-29 01:20:21,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:20:21,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:20:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:20:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:20:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:20:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 1013 [2023-08-29 01:20:21,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 322 transitions, 1731 flow. Second operand has 6 states, 6 states have (on average 399.3333333333333) internal successors, (2396), 6 states have internal predecessors, (2396), 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 01:20:21,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:20:21,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 1013 [2023-08-29 01:20:21,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:20:35,728 INFO L130 PetriNetUnfolder]: 65660/104889 cut-off events. [2023-08-29 01:20:35,728 INFO L131 PetriNetUnfolder]: For 72081/74301 co-relation queries the response was YES. [2023-08-29 01:20:36,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319452 conditions, 104889 events. 65660/104889 cut-off events. For 72081/74301 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 796857 event pairs, 38679 based on Foata normal form. 0/98783 useless extension candidates. Maximal degree in co-relation 319431. Up to 96677 conditions per place. [2023-08-29 01:20:36,534 INFO L137 encePairwiseOnDemand]: 975/1013 looper letters, 472 selfloop transitions, 141 changer transitions 0/629 dead transitions. [2023-08-29 01:20:36,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 629 transitions, 4205 flow [2023-08-29 01:20:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:20:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:20:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2746 transitions. [2023-08-29 01:20:36,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45179335307666996 [2023-08-29 01:20:36,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2746 transitions. [2023-08-29 01:20:36,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2746 transitions. [2023-08-29 01:20:36,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:20:36,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2746 transitions. [2023-08-29 01:20:36,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 457.6666666666667) internal successors, (2746), 6 states have internal predecessors, (2746), 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 01:20:36,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:20:36,547 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1013.0) internal successors, (7091), 7 states have internal predecessors, (7091), 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 01:20:36,547 INFO L175 Difference]: Start difference. First operand has 167 places, 322 transitions, 1731 flow. Second operand 6 states and 2746 transitions. [2023-08-29 01:20:36,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 629 transitions, 4205 flow [2023-08-29 01:20:36,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 629 transitions, 4171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 01:20:36,770 INFO L231 Difference]: Finished difference. Result has 174 places, 460 transitions, 2817 flow [2023-08-29 01:20:36,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1013, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2817, PETRI_PLACES=174, PETRI_TRANSITIONS=460} [2023-08-29 01:20:36,771 INFO L281 CegarLoopForPetriNet]: 189 programPoint places, -15 predicate places. [2023-08-29 01:20:36,771 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 460 transitions, 2817 flow [2023-08-29 01:20:36,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 399.3333333333333) internal successors, (2396), 6 states have internal predecessors, (2396), 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 01:20:36,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:20:36,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:20:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 01:20:36,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [threadErr6ASSERT_VIOLATIONDATA_RACE, threadErr21ASSERT_VIOLATIONDATA_RACE, threadErr8ASSERT_VIOLATIONDATA_RACE, threadErr26ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-08-29 01:20:36,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:20:36,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2084364850, now seen corresponding path program 1 times [2023-08-29 01:20:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:20:36,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480228945] [2023-08-29 01:20:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:20:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:20:39,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:20:39,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480228945] [2023-08-29 01:20:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480228945] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 01:20:39,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220627766] [2023-08-29 01:20:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:20:39,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 01:20:39,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:20:39,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 01:20:39,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 01:20:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:20:39,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 117 conjunts are in the unsatisfiable core [2023-08-29 01:20:39,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 01:20:39,974 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2023-08-29 01:20:39,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-29 01:20:40,024 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 19 treesize of output 18 [2023-08-29 01:20:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 01:20:40,080 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 19 treesize of output 18 [2023-08-29 01:20:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 01:20:40,132 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 19 treesize of output 18 [2023-08-29 01:20:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 01:20:40,173 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 01:20:40,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 01:20:40,207 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 01:20:40,336 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 01:20:40,436 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 19 treesize of output 18 [2023-08-29 01:20:40,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 01:20:40,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 01:20:40,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 01:20:40,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 01:20:40,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 01:20:40,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 01:20:40,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 01:20:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 01:20:40,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15